US20100031943A1

US20100031943A1 - Coupler Assembly for Dispensing Fluid from a Compressed Fluid Source

Info

Publication number: US20100031943A1
Application number: US12/188,807
Authority: US
Inventors: Fernand Armand Kirouac; Claude Longpre
Original assignee: K&L Air Products Inc
Current assignee: K&L Air Products Inc
Priority date: 2008-08-08
Filing date: 2008-08-08
Publication date: 2010-02-11
Also published as: WO2010015077A1

Abstract

There is provided a coupler assembly for dispensing fluid from a compressed fluid source, the coupler assembly comprising a chamber, an inlet port, the inlet port comprising a releasable member to be connected to a hose originating from a compressed fluid source, the releasable member comprising a valve, the inlet port further comprising a receiving member for receiving the releasable member, the receiving member being in fluid communication with the chamber, an outlet port in fluid communication with the chamber and a fluid control mechanism operatively coupled to the chamber for controlling an amount of fluid dispensed from the inlet port to the outlet port.

Description

FIELD OF THE INVENTION

The present invention relates to a coupler assembly. More specifically, the present invention pertains to a coupler assembly for providing fluid from a compressed fluid source.

BACKGROUND OF THE INVENTION

Paintball has been popular for over two decades. Teams of opposing players shoot paint-filled, gelatin paintballs at each other using a gas-powered paintball marker, or paintball gun, which is trigger-activated.
Paintball markers are typically powered using compressed gas bottles, typically containing CO₂or air, wherein the pressure ranges from 1800 psi to 4500 psi. Those gas bottles are sometimes placed in a backpack worn by the player and connected to the paintball marker using a remote gas line.
During play, a player may want to switch his gas bottle for a gas bottle containing a different gas or the same gas stored at a different pressure. This allows the player to give different effects and trajectories to paintballs fired from his paintball marker. As the gas bottle has a limited capacity, the player may also want to refill his gas bottle to raise the pressure provided to the marker. The player may further want to perform maintenance operations on his paintball marker, such as cleaning paintball debris out of the barrel of the paintball marker.
All of the operations previously mentioned involve the disconnection of the gas bottle from the paintball marker. This operation can be hazardous and must be conducted with extreme care. Due to the high pressure present in the gas bottle, a gas bottle disconnected quickly from a paintball marker may be propelled through the air in a missile-like fashion by the pressure from the compressed fluid flowing freely from the gas bottle, potentially damaging structures and causing bodily harm to players or bystanders.
It will also be appreciated that when a paintball marker is connected to gas bottle, the compressed fluid flowing into the paintball marker will cause a build-up of pressure inside the paintball marker. A paintball may thus still be accidentally fired from the paintball marker even after the gas bottle has been disconnected.
Therefore, prior to the disconnection, the pressure of compressed gas built up inside the paintball marker must be relieved. Currently, paintball players are first closing the compressed gas input from the gas bottle, and then activating the trigger of the paintball marker without any paintball loaded. Each trigger activation lets out a small amount of pressure, until the pressure inside the paintball marker is equal to atmospheric pressure.
The player can then safely unhook the gas bottle from the paintball marker. It will be appreciated that this task is cumbersome and time consuming, and may not be undertaken during paintball games where the play time is limited or key.
During this whole process, the player is also prevented from using his paintball marker, which renders that situation highly undesirable during play.
Previous attempts have been made at solving this problem, namely the inclusion of a coupler between the paintball marker and gas bottle. Examples of such couplers can be found in U.S. Pat. No. 6,260,821, U.S. Pat. No. 6,722,391, U.S. Pat. No. 6,941,938 and US Patent Publication 2006/0032647. These references do not address all of the above-identified problems, either because they do not allow the player to relieve pressure from the paintball marker at all or because they do not allow quick relief of pressure from the paintball marker.
There is therefore a need for a device that will overcome at least one of the above identified drawbacks.
Features of the invention will be apparent from review of the disclosure, drawings and description of the invention below.

BRIEF SUMMARY OF THE INVENTION

BRIEF DESCRIPTION OF THE DRAWINGS

In order that the invention may be readily understood, embodiments of the invention are illustrated by way of example in the accompanying drawings.

FIG. 1 is a drawing which shows a perspective view of a coupler assembly for dispensing fluid from a compressed fluid source in accordance with a preferred embodiment of the present invention, with a fluid-powered device and a compressed fluid source connected thereto;

FIG. 2A is a drawing which shows a perspective view of the coupler assembly shown in FIG. 1;

FIG. 2B is a drawing which shows a top elevation view of the coupler assembly shown in FIG. 1;

FIG. 2C is a drawing which shows a left side elevation view of the coupler assembly shown in FIG. 1;

FIG. 2D is a drawing which shows a back elevation view of the coupler assembly shown in FIG. 1;

FIG. 3A is a drawing which shows a perspective view of the coupler assembly shown in FIG. 1, wherein the fluid control mechanism, the pressure relief mechanism, the receiving member and the releasable member have been removed;

FIG. 3B is a drawing which a cross-section view of the coupler assembly shown in FIG. 3A, taken along line 3B-3B of FIG. 3A;

FIG. 4A is a drawing which shows a front exploded view of the coupler assembly shown in FIG. 1;

FIG. 4B is a drawing which shows a back exploded view of the coupler assembly shown in FIG. 1;

FIG. 5 is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C;

FIG. 6A is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C, with the fluid control mechanism in a closed position;

FIG. 6B is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C, with the fluid control mechanism in an open position;

FIG. 7A is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C, with the pressure relief mechanism in a closed position;

FIG. 7B is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C, with the pressure relief mechanism in an open position;

FIG. 7C is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 7C-7C of FIG. 2D, with the pressure relief mechanism in an open position;

FIG. 8A is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C, with a compressed fluid providing hose connected thereto;

FIG. 8B is a drawing which shows an cross-section view of the coupler assembly shown in FIG. 1, taken along line 5-5 of FIG. 2C, with a compressed fluid providing hose disconnected therefrom;

FIG. 9A is a drawing which shows an cross-section view of the coupler assembly in accordance with an alternative embodiment of the present invention, taken along line 5-5 of FIG. 2C, with the pressure limiting mechanism in an initial position;

FIG. 9B is a drawing which shows an cross-section view of the coupler assembly in accordance with an alternative embodiment of the present invention, taken along line 5-5 of FIG. 2C, with the pressure limiting mechanism in an activated position.

Further details of the invention and its advantages will be apparent from the detailed description included below.

DETAILED DESCRIPTION

In the following description of the embodiments, references to the accompanying drawings are by way of illustration of an example by which the invention may be practiced. It will be understood that other embodiments may be made without departing from the scope of the invention disclosed.
A coupler assembly 100 will now be described according to one embodiment of the present invention, with references to FIG. 1.
The coupler assembly 100 operatively couples a fluid-powered device 102 to a compressed fluid source 104 wherefrom a compressed fluid is provided.
In the embodiment illustrated in FIG. 1, the compressed fluid source 104 comprises a bottle containing compressed CO₂gas. Alternatively, the compressed fluid source 104 may comprise a bottle containing compressed air or any other fluid that may comply with the specifications of the fluid-powered device 102 operatively connected to the coupler assembly 100.
In yet another embodiment, the compressed fluid source 104 may be a direct fluid line conveying compressed fluid from an industrial compressor. This embodiment would allow compressed fluid with constant pressure to be delivered to the coupler assembly 100 for an unlimited amount of time.
Still in the embodiment illustrated in FIG. 1, the fluid-powered device 102 comprises a paintball marker. In another embodiment, the fluid-powered device 102 may be a pneumatic tool, a hydraulic tool or the like.
Still referring to FIG. 1, the coupler assembly 100 comprises an inlet port 108 to be connected to a hose, also referred to hereinafter as a compressed fluid providing hose 106, originating from the compressed fluid source 104. The compressed fluid providing hose 106 is used to convey a compressed fluid from the compressed fluid source 104 to the coupler assembly 100 and comprises an externally threaded inlet port engaging end 170 for securely engaging the inlet port 108, as it will become apparent below.
The compressed fluid providing hose 106 further comprises a second, opposite compressed fluid source engaging end 172 adapted to be sealingly connected to the compressed fluid source 104.
Still referring to FIG. 1, the inlet port 108 comprises a releasable member 150 whereto the compressed fluid providing hose 106 is securely connected.
Still referring to FIG. 1, the coupler assembly 100 further comprises an outlet port 114 for delivering compressed fluid to the fluid-powered device 102. The outlet port 114 is adapted for engaging a fluid-powered device entry port 160 provided with the fluid-powered device 102.
In an alternative embodiment, the outlet port 114 is adapted for engaging a conveying hose conveying compressed fluid from the outlet port 114 to the fluid-powered device 102. It will be appreciated by the skilled addressee that this embodiment would enable a user to utilize the features of the coupler assembly 100 while being at a distance from the fluid-powered device.
In an embodiment wherein the fluid-powered device 102 is a paintball marker, the use of a conveying hose conveying compressed fluid from the outlet port 114 to the paintball marker coupled with the use of a remote trigger to activate the shooting of paintballs from the paintball marker would enable a player to mount the paintball marker at a location and to control it from another remote location.
Still referring to FIG. 1, the coupler assembly 100 further comprises a fluid control mechanism 120 for controlling an amount of fluid dispensed from the inlet port 108 to the outlet port 1 14.
In a preferred embodiment shown in FIG. 1, the fluid control mechanism 120 is operated manually using a fluid control knob 122 having a knurled outer surface to provide an improved grip to a hand of a user operating the fluid control mechanism 120. In an alternative embodiment, the fluid control knob 122 does not comprise a knurled outer surface.
In yet another embodiment, the fluid control mechanism 120 does not comprise a fluid control knob 122. The fluid control mechanism 120 may be operatively connected to automated actuation means known to the skilled addressee such as an electric actuator, a pneumatic actuator, a hydraulic actuator or the like.
Still referring to FIG. 1, the coupler assembly 100 further comprises a pressure relief mechanism 124 to selectively evacuate, from said coupler assembly 100, an amount of pressure created by an amount of compressed fluid therein.
In a preferred embodiment shown in FIG. 1, the pressure relief mechanism 124 is operated manually using a pressure relief knob 126 having a knurled outer surface to provide an improved grip to a hand of a user operating the pressure relief mechanism 124. In an alternative embodiment, the pressure relief knob 126 does not comprise a knurled outer surface.
In yet another embodiment, the pressure relief mechanism 124 does not comprise a pressure relief knob 126. The pressure relief mechanism 124 may be operatively connected to automated actuation means known to the skilled addressee such as an electric actuator, a pneumatic actuator, a hydraulic actuator or the like.
Still referring to FIG. 1, the coupler assembly 100 further comprises a pressure gauge port 128 to receive a pressure gauge 130 therein. The pressure gauge 128 enables a visual reading of a measurement of an amount of pressure inside the coupler assembly 100. In an alternative embodiment, the coupler assembly 100 does not comprise a pressure gauge port 128 or a pressure gauge 130.
The features of the coupler assembly 100 will now be detailed in accordance with one embodiment of the present invention, with references to FIGS. 2A, 2B, 2C and 2D, 3A and 3B.
Now referring to FIG. 2A, the coupler assembly 100 comprises a hollow coupling body 200 having a planar front face 202, a planar back face 204 parallel to the planar front face 202 and a pair of spaced-apart, outwardly curved left and right faces 206 and 208 extending between the planar front face 202 and the planar back face 204.
In the embodiment shown in FIG. 2A, the pressure relief mechanism 124 is located on the outwardly curved left face 206 of the hollow coupling body 200 and is horizontally centered thereon.
Still in the embodiment shown in FIG. 2A, the fluid control mechanism 120 is located on the outwardly curved right face 208 of the hollow coupling body 200 and is horizontally centered thereon.
Now referring to FIG. 2D, the hollow coupling body 200 has a planar bottom face 210, a top circular face 212 parallel to the planar bottom face 210 and a top curved face 214 extending from the top circular face 212 to the planar front face 202, the planar back face 204, the outwardly curved left face 206 and the outwardly curved right face 208.
In the embodiment shown in FIG. 2B, the inlet port 108 is located on the top curved face 214 between the top circular face 212 and the outwardly curved right face 208. Still in the embodiment shown in FIG. 2, the pressure gauge port 128 is located on the top curved surface 214 between the top circular face 212 and the outwardly curved left face 206.
Now referring to FIG. 2D, the inlet port 108 comprises a receiving member for receiving the releasable member 150. In this embodiment, the receiving member comprises an inlet connecting duct 230 sealingly attached to the hollow coupling body 200. The receiving member further comprises an inlet port swivel nut 232 concentrically and slidably mounted on the inlet connecting duct 230 such that the removal of the inlet port swivel nut 232 off of the inlet connecting duct 230 is prevented, as it will become apparent below.
It will be appreciated that the inlet connecting duct 230 is provided as a distinct, detachable part of the coupler assembly 100 to facilitate the manufacturing of the coupler assembly 100. In another embodiment, the inlet connecting duct 230 may form a single part with the coupler assembly 100.
It will further be appreciated that the inlet connecting duct 230 is also provided to enable better access to the inlet port 108 to a hand of a user selectively engaging and disengaging of the compressed fluid providing hose 106. In yet another embodiment, the inlet port 108 may be provided without an inlet connecting duct 230 and the compressed fluid providing hose 106 may directly engage the coupler assembly 100.
Still referring to FIG. 2D, the outlet port 114 comprises a generally cylindrical protrusion extending outwardly and normally to the center of the planar bottom face 210. The outlet port 114 further comprises an outlet port bottom rim 216 parallel to the planar bottom face 210 of the hollow coupling body 200.
The outlet port 114 is further provided with an outlet port externally threaded portion 240 located on the outer surface of this generally cylindrical protrusion for sealingly engaging the fluid-powered device entry port 160 provided with the fluid-powered device 102.
The outlet port 114 is further provided with an outlet port circumferential groove 242 located below the outlet port externally threaded portion 240 for receiving an O-ring seal (not shown) therein. The O-ring seal is provided to prevent compressed fluid from leaking along the outlet port externally threaded portion 240 during the delivery of compressed fluid from the outlet port 114 to the fluid-powered device 102. In an alternative embodiment, the outlet port 114 may not comprise an outlet port circumferential groove 242 or an O-ring seal.
In an alternative embodiment, a second circumferential groove is located above the outlet port externally threaded portion 240 to receive a second O-ring seal therein, thus providing an improved prevention against leaks of compressed fluid along the outlet port externally threaded portion 240 during the delivery of compressed fluid from the outlet port 114 to the fluid-powered device 102.
In a preferred embodiment, the hollow coupling body 200 and the outlet port 114 define an integral structure. It will be appreciated that this configuration minimizes the probability of leakage of compressed fluid from the hollow coupling body 200 and the outlet port 114 during the lifetime of the coupler assembly 100. In an alternative embodiment, the outlet port 114 may be manufactured as a separate member provided with a threaded portion for engaging the hollow coupling body 200 provided with a corresponding internally threaded portion.
The hollow coupling body 200 may be manufactured from a single block of rigid material selected from a group comprising aluminum, stainless steel, titanium, magnesium, brass, cast iron, PVC, ABS or any other material the skilled addressee may see appropriate for the present use of the invention.
Still in a preferred embodiment, the hollow coupling body 200 and the outlet port 114 may be manufactured using machining operations known to the skilled addressee such as milling, turning and tapping. In an alternative embodiment, the hollow coupling body 200 may be manufactured from two symmetrical, corresponding halves welded together using welding techniques known to the addressee such as tungsten inert gas welding, metal inert gas welding, plasma arc welding or the like.
In yet another embodiment, the hollow coupling body 200 is manufactured using casting techniques known to the skilled addressee such as sand casting, die casting, investment casting or the like.
The skilled addressee will appreciate that the location of the inlet port 108, the outlet port 114, the fluid control mechanism 120, the pressure relief mechanism 124 and the pressure gauge port 128 on the hollow coupling body 200 may be changed according to aesthetic considerations. The inlet port 108, the outlet port 114, the fluid control mechanism 120, the pressure relief mechanism 124, and the pressure gauge port 128 are distributed along the top curved face 214, the planar bottom face 210, the outwardly curved left face 206 and the outwardly curved right face 208 to provide enough clearance to a hand of a user to operate as well as to facilitate manufacturing using machining operations known to the skilled addressee such as milling, turning and tapping.
In an alternative embodiment, the inlet port 108, the outlet port 114, the fluid control mechanism 120, the pressure relief mechanism 124 and the pressure gauge port 128 may be positioned at another location on the hollow coupling body 200, as long as the ports are interconnected by a chamber having the features described below.
Now referring to FIG. 3B, the hollow coupling body 200 further comprises a chamber 302. The chamber 302 comprises a gauge port communicating channel 304 extending inwardly from the pressure gauge port 128 located on the top curved face 214 of the hollow coupling body 200. The gauge port communicating channel 304 is connected by a chamber connecting elbow 342 to an outlet port communicating channel 360 extending normally and inwardly from the outlet port bottom rim 216 of the outlet port 114 located on the planar bottom face 210 of the hollow coupling body 200 such that the gauge port communicating channel 304, the chamber connecting elbow 342 and the outlet port communicating channel 360 are in fluid communication.
Still referring to FIG. 3B, the gauge port communicating channel 304 further comprises a gauge port internally threaded portion 306 for receiving the threaded portion of a pressure gauge 130. This allows for the removal of the pressure gauge 130 from the pressure gauge port 128 for recalibration purposes or to replace the pressure gauge 130 with one of superior precision.
In an alternative embodiment, the gauge port communicating channel 304 may not comprise a gauge port internally threaded portion 306, the pressure gauge 130 being instead sealingly glued to the pressure gauge port 128 using epoxy glue, acrylic glue or any other sealing compound that can provide sealing of the gauge port 128.
In yet another embodiment, the pressure gauge 130 may be welded to the gauge port 128 using welding techniques known to the skilled addressee such as tungsten inert gas welding, metal inert gas welding, plasma arc welding or the like.
Still referring to FIG. 3B, the chamber 302 further comprises a fluid control channel 312 for housing the fluid control mechanism 120. The fluid control channel 312 extends inwardly and horizontally between the outwardly curved right face 208 and the gauge port communicating channel 304.
The fluid control channel 312 comprises a fluid control mechanism receiving bore 314 and a fluid control conical end cavity 318 provided as an extension of the fluid control mechanism receiving bore 314, the fluid control conical end cavity 318 and the fluid control mechanism receiving bore 314 being in fluid communication with one another.
More specifically, the fluid control conical end cavity 318 comprises a fluid control conical end cavity inner lateral surface 319 tapering inwardly from the inner end 321 of the fluid control mechanism receiving bore 314 to a fluid control conical end cavity communication hole 320 extending from the conical control end cavity 318 to the gauge port communicating channel 304, the gauge port communicating channel 304 and the fluid control channel 312 thus being in fluid communication with one another.
The fluid control mechanism receiving bore 314 is provided with a fluid control mechanism receiving bore internally threaded portion 316 for securing the fluid control mechanism 120 to the hollow coupling body 200, as it will become apparent below.
Still referring to FIG. 3B, the chamber 302 further comprises an inlet channel 322 extending downwardly and inwardly between the inlet port 108 located on the top curved face 214 and the fluid control channel 312 such that the inlet channel 322 and the fluid control channel 312 are in fluid communication.
The inlet channel 322 comprises an inlet connecting duct receiving bore 324 and an inlet inner conduit 328 provided as an extension of the inlet connecting duct receiving bore 324, the inlet inner conduit 328 and the inlet connecting duct receiving bore 324 being in fluid communication with one another.
The inlet connecting duct receiving bore 324 is provided with an inlet connecting duct receiving bore internally threaded portion 326 for securing the inlet connecting duct 230 to the hollow coupling body 200, as it will become apparent below.
Still referring to FIG. 3B, the chamber 302 further comprises a pressure relief channel 330 extending inwardly and between the outwardly curved left face 206 and the chamber connecting elbow 342.
The pressure relief channel 324 comprises a pressure relief mechanism receiving bore 326 and a pressure relief conical end cavity 328 provided as an extension on the pressure relief mechanism receiving bore 326, the pressure relief conical end cavity 318 and the pressure relief mechanism receiving bore 314 being in fluid communication with one another.
More specifically, the pressure relief conical end cavity 336 comprises a pressure relief conical end cavity inner lateral surface 337 tapering inwardly from the inner end 339 of the fluid control mechanism receiving bore 314 to a fluid control conical end cavity communication hole 320 extending from the conical control end cavity 318 to the gauge port communicating channel 304, the gauge port communicating channel 304 and the fluid control channel 312 thus being in fluid communication with one another.
Still referring to FIG. 3B, the chamber 302 further comprises a pressure relief discharge duct 340 extending inwardly and normally from the planar back face 204 to the pressure relief mechanism receiving bore 332, the pressure relief discharge duct 340 being in fluid communication with the pressure relief channel 330.
Additional features of the coupler assembly 100 will now be described in accordance with one embodiment of the present invention, with references to FIGS. 4A and 4B.
Now referring to FIG. 4A, the inlet port swivel nut 232 comprises an internally threaded, open-ended hollow shell 480 closed at its lower end by an inlet port swivel nut narrow portion 482 provided with an inlet port swivel nut central hole 484 for concentrically receiving the inlet connecting duct 230 therein. The inlet port swivel nut 232 is further provided for releasably engaging the releasable member 150, as it will become apparent below.
In a preferred embodiment illustrated in FIG. 4A, the inlet port swivel nut 232 is provided with a knurled outer surface to provide an improved grip to a hand of a user selectively and releasably engaging and disengaging the releasable member 150. In an alternative embodiment, the inlet port swivel nut 232 is not provided with a knurled outer surface.
Still referring to FIG. 4A, the inlet connecting duct 230 comprises a generally cylindrical body provided, at a first end, with an inlet connecting duct threaded portion 400 for engaging the inlet connecting duct receiving bore internally threaded portion 326, not shown in FIG. 4A.
The inlet connecting duct 230 is further provided, at a second, opposite end, with an inlet connecting duct bulging portion 408 having a larger diameter than the inlet port swivel nut narrow portion 482 such that the inlet connecting duct bulging portion 408 may abut the inlet port swivel nut narrow portion 482 when the inlet connecting duct 230 is concentrically and slidably mounted into the internally threaded swivel end nut 112, preventing further upward movement of the internally threaded swivel end nut 112 with reference to the inlet connecting duct 230.
As best shown in FIG. 4B, the inlet connecting duct 230 further comprises an inlet connecting duct end nipple 404 extending upwardly and axially from the center of the inlet connecting duct bulging portion 408 and is provided for engaging the releasable member 150, as it will become apparent below.
Turning back to FIG. 4A, the inlet connecting duct 230 is further provided with an inlet connecting duct internal conduit 402 providing fluid communication between the releasable member 150 and the chamber 302, not shown in FIG. 4A.
Still referring to FIG. 4B the inlet connecting duct end nipple 404 is provided with an inlet connecting duct end nipple slot 406 extending perpendicularly on top of the inlet connecting duct end nipple 404. The inlet connecting duct end nipple slot 406 is in fluid communication with the inlet connecting duct internal conduit 402.
Now referring to FIG. 5, the releasable member 150 comprises a generally cylindrical releasable member hollow shell 500 provided, at a first end, with a releasable member externally threaded portion 464 for releasably engaging the inlet connecting duct 230, as it will become apparent below.
In the embodiment illustrated in FIG. 5, the releasable member 150 further comprises a releasable member internally threaded portion 502 for securely engaging a port adaptor 504. In this embodiment, the releasable member internally threaded portion 502 is adapted for receiving an NPT ¼″ threaded member therein.
Still in the embodiment shown in FIG. 5, the port adaptor 504 is used to engage the NPT ¼″ adapted releasable member internally threaded portion 502 and receive an NPT ⅛″ threaded portion of the compressed fluid providing hose 106, not shown in FIG. 5, therein.
In an alternative embodiment, the releasable member 150 does not comprise a port adaptor 504, the releasable member internally threaded portion 502 being adapted to receive an NPT ⅛″ threaded portion of the compressed fluid providing hose 106, not shown in FIG. 5, therein.
In yet another embodiment, the releasable member 150 does not comprise a port adaptor 504, the releasable member internally threaded portion 502 being adapted to receive another type of threaded portion of the compressed fluid providing hose 106, not shown in FIG. 5, therein.
Still referring to FIG. 5, the releasable member 150 comprises, at a second, opposite end, a releasable member externally threaded portion 506 for releasably engaging the inlet connecting duct 230, as it will become apparent below.
The releasable member 150 further comprises a releasable member central conduit 508 provided with a releasable member valve 510 for selectively enabling or preventing fluid communication between the compressed fluid providing hose 106, not shown on FIG. 5, and the chamber 302.
In the embodiment shown in FIG. 5, the releasable member valve 510 comprises a spring-loaded check valve selectively activated by the inlet connecting duct end nipple 404.
In an alternative embodiment, the releasable member valve 510 may be any another valve that may be activated by the inlet connecting duct end nipple 404.
The skilled addressee will appreciate that the releasable member valve 510 enables the disconnection of the releasable member 150 sealingly attached to the compressed fluid providing hose 106, not shown in FIG. 5, without leakage of compressed fluid from the compressed fluid providing hose 106. Once the releasable member 150 is disengaged from the inlet connecting duct 230, the releasable member valve 510 is no longer activated by the inlet connecting duct end nipple 404, and therefore moves from an open position to a closed position, preventing leakage of compressed fluid from the compressed fluid providing hose 106 through the releasable member central conduit 508.
Referring back to FIG. 4A, the fluid control mechanism 120 comprises a fluid control mechanism fastening nut 412 for securing the fluid control mechanism 120 to the hollow coupling body 200, as it will become apparent below.
The fluid control mechanism fastening nut 412 comprises a fluid control mechanism fastening nut head 414 for sealingly fastening the fluid control mechanism fastening nut 412 to the fluid control mechanism receiving bore 314, not shown in FIG. 4A, as it will become apparent below.
In the embodiment shown in FIG. 4A, the fluid control mechanism fastening nut head 414 has a hexagonal shape to facilitate fastening using a tool known to the skilled addressee such as a torque wrench, a monkey wrench or the like.
In an alternative embodiment, the fluid control mechanism fastening nut head 414 may have a circular shape provided with a knurled outer surface to facilitate fastening using a hand of a user.
It will be appreciated that the fluid control mechanism fastening nut head 414 may have a triangular shape, a square shape, an octagonal shape or any other geometrical shape the skilled addressee may find appropriate for fastening.
The fluid control mechanism fastening nut 412 further comprises a fluid control mechanism fastening nut central bore 416 for concentrically mounting a fluid control piston 424 therein. More specifically, the fluid control mechanism fastening nut central bore 416 comprises a fluid control mechanism fastening nut internally threaded portion 418 for rotatively engaging the fluid control piston 424 therein and axially displacing the fluid control piston 424 with reference to the fluid control mechanism fastening nut 412, as it will become apparent below.
Still referring to FIG. 4, the fluid control piston 424 comprises a fluid control piston externally threaded body 428 for operatively engaging the fluid control mechanism fastening nut internally threaded portion 418.
The fluid control piston 424 further comprises a fluid control piston head 426 having a frusto-conical shape for selectively allowing or preventing passage of a compressed fluid from the fluid control channel 312, not shown in FIG. 4A, to the gauge port communicating channel 304, not shown in FIG. 4A, through the fluid control conical end cavity communicating hole 320, not shown in FIG. 4A, as it will become apparent below.
More specifically, the fluid control piston head 426 comprises a fluid control piston head external lateral surface 427 tapering from a fluid control piston inner peripheral groove 432 such that the fluid control piston head external lateral surface 427 may sealingly mate with the fluid control conical end cavity inner lateral surface 319, not shown in FIG. 4A.
Referring back to FIG. 3B, the skilled addressee will appreciate that the fluid control piston head 426, not shown in FIG. 3B, may be nested into the fluid control conical end cavity 318 and may act as a plug thereof. It will further be appreciated by the skilled addressee that such positioning of the fluid control piston head 426, not shown in FIG. 3B, in the fluid control conical end cavity 318 is intended to prevent leakage of compressed fluid from the fluid control channel 312 to the gauge port communicating channel 304 through the fluid control conical end cavity communicating hole 320.
Now turning back to FIG. 4A, the fluid control piston inner peripheral groove 432 is used for receiving an O-ring seal 490 therein. The O-ring seal 490 is provided to further prevent leakage of compressed fluid from the fluid control mechanism receiving bore 314, not shown in FIG. 4A, to the fluid control conical end cavity communicating hole 320, not shown in FIG. 4A, through the mating interface of fluid control piston head external lateral surface 427 and the fluid control conical end cavity internal lateral surface 319, not shown in FIG. 4A.
The fluid control piston 424 is further provided with a fluid control piston outer peripheral groove 430 located on the fluid control piston between the fluid control piston inner peripheral groove 432 and the fluid control piston externally threaded body 428 for receiving an O-ring seal 492 therein. The O-ring seal 492 is provided to further prevent leakage of compressed fluid from the fluid control channel 312, not shown in FIG. 4A.
The fluid control piston 424 is further provided with a fluid control piston external abutting rim 434 located between the fluid control piston outer peripheral groove 430 and the fluid control piston externally threaded body 428, the fluid control piston external abutting rim 434 facing towards the fluid control piston externally threaded body 428. The fluid control piston external abutting rim 434 is provided for abutting a fluid control mechanism fastening nut internal abutting rim 422 located on the interior surface of the fluid control mechanism fastening nut 412, as it will become apparent below.
The skilled addressee will appreciate that the fluid control piston external abutting rim 434 and the fluid control mechanism fastening nut internal abutting rim 422 are parallel to one another and perpendicular to the central axis of the fluid control piston 424.
The fluid control mechanism fastening nut 412 further comprises a fluid mechanism fastening nut externally threaded portion 420 for operatively engaging the fluid control mechanism receiving bore 314, not shown in FIG. 4A.
Still referring to FIG. 4A, the fluid control knob 122 comprises a fluid control knob internally threaded central bore 470 for engaging the fluid control piston externally threaded body 428.
Similarly to the fluid control mechanism 120, the pressure relief mechanism 124 comprises a pressure release mechanism fastening nut 436 for securing the pressure release mechanism 124 to the hollow coupling body 200, as it will become apparent below.
Still referring to FIG. 4A, the pressure relief mechanism fastening nut 436 comprises a pressure relief mechanism fastening nut central bore 440 for concentrically mounting a pressure relief piston 448 therein. More specifically, the pressure relief mechanism fastening nut central bore 440 comprises a pressure relief mechanism fastening nut internally threaded portion 442 for movably engaging the pressure relief piston 448 therein and axially displacing the pressure relief piston 448 with reference to the pressure relief mechanism fastening nut 436, as it will become apparent below.
Still referring to FIG. 4A, the pressure relief piston 448 comprises a pressure relief piston externally threaded body 452 for rotatively engaging the pressure relief mechanism fastening nut internally threaded portion 442.
The pressure relief piston 448 further comprises a pressure relief piston head 450 having a frusto-conical shape for selectively allowing or preventing passage of a compressed fluid from the chamber connecting elbow 342, not shown in FIG. 4A, to the pressure relief channel 330, not shown in FIG. 4A, through the pressure relief conical end cavity communicating hole 338, not shown in FIG. 4A, as it will become apparent below.
More specifically, the pressure relief piston head 450 comprises a pressure relief piston head external lateral surface 451 tapering from a pressure relief piston inner peripheral groove 456 such that the pressure relief piston head external lateral surface 451 may sealingly mate with the pressure relief conical end cavity inner lateral surface 337, not shown in FIG. 4A.
Referring back to FIG. 3B, the skilled addressee will appreciate that the pressure relief piston head 450, not shown in FIG. 3B, may be nested into the pressure relief conical end cavity 336 and may act as a plug thereof. It will further be appreciated by the skilled addressee that such positioning of the pressure relief piston head 450, not shown in FIG. 3B, in the pressure relief conical end cavity 336 is intended to prevent leakage of compressed fluid from the pressure relief channel 330 to the chamber connecting elbow 342 through the pressure relief conical end cavity communicating hole 338.
Now referring back to FIG. 4A, the pressure relief piston inner peripheral groove 456 is used for receiving an O-ring seal 494 therein. The O-ring seal 494 is provided to further prevent leakage of compressed fluid from the pressure relief mechanism receiving bore 332 to the pressure relief conical end cavity communicating hole 338, not shown in FIG. 4A, through the mating interface of the pressure relief piston head external lateral surface 451 and the pressure relief conical end cavity inner lateral surface 337, not shown in FIG. 4A.
The pressure relief piston 448 is further provided with a pressure relief piston outer peripheral groove 454 located on the pressure relief piston 448 between the pressure relief piston inner peripheral groove 456 and the pressure relief piston externally threaded body 452 for receiving an O-ring seal 496 therein. The O-ring seal 496 is provided to further prevent leakage of compressed fluid from the pressure relief channel 330, not shown in FIG. 4A.
Still referring to FIG. 4A, the pressure relief piston 448 is further provided with a pressure relief piston external abutting rim 458 located between the pressure relief piston outer peripheral groove 454 and the pressure relief piston externally threaded body 452, the pressure relief piston external abutting rim 458 facing towards the pressure relief piston externally threaded body 452. The pressure relief piston external abutting rim 458 is provided for abutting a pressure relief mechanism fastening nut internal abutting rim, not shown, located on the interior surface of the pressure relief mechanism fastening nut 436, as it will become apparent below.
The skilled addressee will appreciate that the pressure relief piston external abutting rim 458 and the pressure relief mechanism fastening nut internal abutting rim, not shown, are parallel to one another and perpendicular to the central axis of the pressure relief piston 448.
The pressure relief mechanism fastening nut 436 further comprises a fluid mechanism fastening nut externally threaded portion 444 for operatively engaging the pressure relief mechanism receiving bore internally threaded portion 334, not shown in FIG. 4A.
Still referring to FIG. 4A, the pressure relief knob 126 comprises a pressure relief knob internally threaded central bore 472 for engaging the pressure relief mechanism externally threaded body 452.
Having described the features of the coupler assembly 100 according to one embodiment of the present invention, its assembly will now be described, with references to FIG. 5.
The fluid control mechanism fastening nut 412 is first axially positioned over the fluid control piston 424, the fluid control mechanism fastening nut head 414 facing away from the fluid control piston head 426.
The fluid control mechanism fastening nut 412 is then lowered onto the fluid control piston 424 and the fluid control piston 424 is concentrically inserted into the fluid control mechanism fastening nut central bore 416, the fluid control piston externally threaded body 428 operatively engaging the fluid control mechanism fastening nut internally threaded portion 418.
The fluid control knob 122 is axially positioned over the fluid control piston 424 and the fluid control knob internally threaded central bore 470 is permanently secured onto the fluid control piston externally threaded body 428.
The skilled addressee will appreciate that the fluid control knob 122 is prevented from further rotating about the fluid control piston 424 once it has been installed. In one embodiment, the fluid control knob internally threaded central bore 470 has a smaller diameter than the fluid control piston 424 and the fluid control knob 122 is secured over the fluid control piston 424 using a process of interference fitting known to the skilled addressee.
In an alternative embodiment, the fluid control knob 122 is secured over the fluid control piston 424 using an adhesive compound known to the skilled addressee such as epoxy-based adhesive or any other adhesive compound the skilled addressee may consider useful and appropriate.
The fluid control mechanism fastening nut 412 is then positioned over the fluid control mechanism receiving bore 314 and lowered onto the fluid control mechanism receiving bore 314, the fluid control mechanism fastening nut externally threaded portion 420 permanently and sealingly engaging the fluid control mechanism receiving bore internally threaded portion 316.
In a preferred embodiment, the fluid control mechanism fastening nut externally threaded portion 420 is further coated with a sealing compound known to the skilled addressee such as epoxy-based sealant or the like prior to engagement into the fluid control mechanism receiving bore internally threaded portion 316. The purpose of this coating is to further prevent leakage of compressed fluid from the fluid control mechanism receiving bore 314. In an alternative embodiment, the fluid control mechanism fastening nut externally threaded portion 420 is not coated with a sealing compound prior to engagement into the fluid control mechanism receiving bore internally threaded portion 316.
It will be appreciated that the fluid control piston 424 may now selectively be moved axially with reference to the fluid control channel 312 from a fully-closed position whereat the pressure relief piston head external lateral surface 427 mates with the fluid control conical end cavity inner lateral surface 319 to an open position whereat the pressure relief piston head external lateral surface 427 does not mate with the fluid control conical end cavity inner lateral surface 319. The fluid control piston 424 is moved axially by rotating the fluid control knob 122.
The fluid control piston 424 may be moved axially and outwardly until the fluid control piston external abutting rim 434 abuts the fluid control mechanism fastening nut internal abutting rim 422, thereby preventing the removal of the fluid control piston 424 from the fluid control mechanism fastening nut 412.
Still referring to FIG. 5, the pressure relief mechanism fastening nut 436 is then axially positioned over the pressure relief piston 448, the pressure relief mechanism fastening nut head 438 facing away from the pressure relief piston head 450.
The pressure relief mechanism fastening nut 436 is then lowered onto the pressure relief piston 448 and the pressure relief piston 448 is concentrically inserted into the pressure relief mechanism fastening nut central bore 440, the pressure relief piston externally threaded body 452 operatively engaging the pressure relief mechanism fastening nut internally threaded portion 442.
The pressure relief knob 126 is axially positioned over the pressure relief piston 448 and the pressure relief knob internally threaded central bore 472 is permanently secured onto the pressure relief piston externally threaded body 452.
The skilled addressee will appreciate that the pressure relief knob 126 is prevented from further rotating about the pressure relief piston 448 once it has been installed. In one embodiment, the pressure relief knob internally threaded central bore 472 has a smaller diameter than the pressure relief piston 448 and the pressure relief knob 126 is secured over the pressure relief piston 448 using a process of interference fitting known to the skilled addressee.
In an alternative embodiment, the pressure relief knob 126 is secured over the pressure relief piston 448 using an adhesive compound known to the skilled addressee such as epoxy-based adhesive or any other adhesive compound the skilled addressee may consider useful and appropriate.
The pressure relief mechanism fastening nut 436 is then positioned over the pressure relief mechanism receiving bore 332 and lowered onto the pressure relief mechanism receiving bore 332, the pressure relief mechanism fastening nut externally threaded portion 444 permanently and sealingly engaging the pressure relief mechanism receiving bore internally threaded portion 334.
In a preferred embodiment, the pressure relief mechanism fastening nut externally threaded portion 444 is further coated with a sealing compound known to the skilled addressee such as epoxy-based sealants or the like prior to engagement into the pressure relief mechanism receiving bore internally threaded portion 334. The purpose of this coating is to further prevent leakage of compressed fluid from the pressure relief mechanism receiving bore 332. In an alternative embodiment, the pressure relief mechanism fastening nut externally threaded portion 444 is not coated with a sealing compound prior to engagement into the pressure relief mechanism receiving bore internally threaded portion 334.
It will be appreciated that the pressure relief piston 448 may now selectively be moved axially with reference to the pressure relief channel 330 from a fully-closed position whereat the pressure relief piston head external lateral surface 451 mates with the pressure relief conical end cavity inner lateral surface 337 to an opened position whereat the pressure relief piston head external lateral surface 451 does not mate with the pressure relief conical end cavity inner lateral surface 337. The pressure relief piston 448 is moved axially by rotating the pressure relief knob 126.
The pressure relief piston 448 may be moved axially and outwardly until the pressure relief piston external abutting rim 458 abuts the pressure relief mechanism fastening nut internal abutting rim, not shown, thereby preventing the removal of the pressure relief piston 448 from the pressure relief mechanism fastening nut 436.
Still referring to FIG. 5, the inlet connecting duct 230 is inserted into the inlet port swivel nut central hole 484 until the inlet connecting duct bulging portion 408 abuts the internally threaded swivel nut narrow portion 482. The inlet connecting duct threaded portion 400 then is then sealingly and permanently engaged into the corresponding inlet connecting duct receiving bore internally threaded portion 326 and secured using a flat-bladed screwdriver engaging the inlet connecting duct end nipple slot 406. The flat-bladed screwdriver is used for providing an appropriate amount of torque to prevent leakage of compressed fluid from the inlet connecting duct receiving bore 324.
In a preferred embodiment, the inlet connecting duct threaded portion 400 is further coated with a sealing compound known to the skilled addressee such as epoxy-based sealants or the like prior to engagement into the inlet connecting duct receiving bore internally threaded portion 326. The purpose of this coating is to further prevent leakage of compressed fluid from the inlet connecting duct receiving bore 324. In an alternative embodiment, the inlet connecting duct threaded portion 400 is not coated with a sealing compound prior to engagement into the inlet connecting duct receiving bore internally threaded portion 326.
The skilled addressee will appreciate that the inlet port swivel nut 232 is now slidably mounted on the inlet connecting duct 230 and may be slid upwardly until the inlet port swivel nut narrow portion 482 abuts the inlet connecting duct bulging portion 408 and downwardly until the inlet port swivel nut narrow portion 482 abuts the hollow coupling body 200.
Still referring to FIG. 5, the compressed fluid providing hose 106, provided with an externally threaded portion, not shown, engages the releasable member 150. In the embodiment illustrated in FIG. 5, the compressed fluid providing hose 106 permanently and sealingly engages the port adaptor 504. In an alternative embodiment, the releasable member 150 does not comprise a port adaptor 504 and the compressed fluid providing hose 106 engages sealingly and permanently releasable member internally threaded portion 502.
Still referring to FIG. 5, the pressure gauge 130 is concentrically mounted in the pressure gauge port 128. In an embodiment wherein the pressure gauge 130 is provided with an externally threaded portion for engaging the gauge port internally threaded portion 306, the pressure gauge externally threaded portion may be further coated with a temporary sealing compound known to the skilled addressee such as tire sealants or the like prior to engagement into the gauge port internally threaded portion 306. The purpose of this coating is to further prevent leakage of compressed fluid from the gauge port communicating channel 304 while allowing selective removal and reinstallation if the pressure gauge 130 into the pressure gauge port 128.
In an alternative embodiment, the pressure gauge externally threaded portion may be further coated with a permanent sealing compound known to the skilled addressee such as epoxy-based sealants or the like prior to engagement into the gauge port internally threaded portion 306. The purpose of this coating is to further prevent leakage of compressed fluid the gauge port communicating channel 304 while preventing removal of the pressure gauge 130 from the pressure gauge port 128.
In yet another embodiment, the pressure gauge externally threaded portion is not coated with a sealing compound prior to engagement into the gauge port internally threaded portion 306.
Still referring to FIG. 5, the outlet port 114 is connected to the fluid-powered device entry port 160, the outlet port externally threaded portion 240 sealingly engaging an internally threaded portion provided with the fluid-powered device entry port 160.
In an alternative embodiment, the outlet port externally threaded portion 240 sealingly engages a conveying hose conveying compressed fluid from the outlet port 114 to the fluid-powered device 102, not shown in FIG. 5.
Having described the features and assembly of the coupler assembly 100 according to one embodiment of the present invention, its operation in various embodiments will now be described, with references to FIGS. 6 to 9.
The skilled addressee will appreciate that the compressed fluid source 104, compressed fluid providing hose 106, chamber 302 and fluid-powered device 102 are elements forming a fluid circuit when operatively connected together. The compressed fluid is conveyed from the compressed fluid source 104 to the inlet port 108 of the coupler assembly 100 through the providing hose 106, from the inlet port 108 to the outlet port 114 of the coupler assembly 100 through the chamber 302 and from the outlet port 114 to the fluid-powered device 102.
In an initial mode of operation shown in FIGS. 6A, 7A and 8A, the compressed fluid providing hose 106 is connected to the inlet port 108 of the coupler assembly 100. More specifically, the inlet connecting duct end nipple 404 concentrically engages the releasable member central conduit 508, keeping the releasable member valve 510 in an open position wherein the compressed fluid providing hose 106 and the chamber 302 are in fluid communication. Compressed fluid laterally enters the inlet connecting duct end nipple 404 from the releasable member 150 through the inlet connecting duct end nipple slot 406.
Still in an initial mode of operation shown in FIGS. 6A, 7A and 8A, the compressed fluid source 104, not shown in FIGS. 6A, 7A and 8A, is activated, providing compressed fluid throughout the previously described fluid circuit and urging the movement of the compressed fluid from the providing hose 106 to the fluid-powered device 102, not shown in FIGS. 6A, 7A and 8A, through the chamber 302 of the coupler assembly 100.
Still in an initial mode of operation, the fluid control mechanism 120 and pressure relief mechanism 124 are both in a closed position, the fluid control piston head external lateral surface 427 and the pressure relief piston head external surface 451 resting respectively on the fluid control channel conical end cavity inner lateral surface 319 and the pressure relief channel conical end cavity inner lateral surface 337.
Now referring to FIGS. 6A and 6B, the operation of the fluid control mechanism 120 will be detailed, in accordance with one embodiment of the present invention.
In a fully-closed position, the fluid control piston 424 acts as a plug to the fluid control conical end cavity communicating hole 320 and prevents movement of compressed fluid therethrough, as shown on FIG. 6A. Since the fluid control channel 312 and gauge port communicating channel 304 are no longer in fluid communication, the fluid circuit is divided into an upstream fluid circuit comprising the compressed fluid source 104, not shown in FIG. 6A, the compressed fluid providing hose 106, the inlet port 108, the inlet channel 322 and the fluid control channel 312 and a downstream fluid circuit comprising the gauge port communicating channel 304, the pressure relief channel 330, the outlet port communicating channel 360 and the fluid-powered device 102, not shown in FIG. 6A.
When the fluid control knob 122 is rotated counter-clockwise, the fluid control mechanism 120 is moved from a fully-closed position to a partially-opened position, as shown on FIG. 6B. An opening 600 is created around the fluid control piston head 426, providing fluid communication between the upstream and downstream fluid circuits. However, the flow of compressed fluid available through the downstream fluid circuit is restricted by the fluid control piston head 426 still partially plugging the fluid control conical end cavity communicating hole 320.
In an alternative embodiment, the movement of the fluid control mechanism 120 from a fully-closed position to a partially-opened position or fully-opened position is achieved by a clockwise rotation of the fluid control knob 122 and the movement of the fluid control mechanism 120 from a partially-opened position or a fully-opened position to a fully-closed position is achieved by a counter-clockwise rotation of the fluid control knob 122.
When the fluid control knob 122 is further rotated, the opening 600 is gradually enlarged as the fluid control piston head 426 is moved away from the fluid control conical end cavity communicating hole 320, enabling a higher flow of compressed fluid to be available through the downstream fluid circuit.
It will be appreciated by the skilled addressee that in an embodiment wherein the movement of the fluid control mechanism 120 from a fully-closed position to a partially-opened position is achieved by a clockwise rotation of the fluid control knob 122, the enlargement of the opening 600 is further achieved by a clockwise rotation of the fluid control knob 122.
Reciprocally, when the fluid control knob 122 is rotated in a second, opposite direction, the fluid control mechanism 120 is moved from a partially-opened or a fully-opened position towards a fully-closed position wherein fluid communication between the gauge port communicating channel 304 and the fluid control channel 312 is prevented.
In the embodiment shown in FIG. 1 wherein the fluid-powered device 102 is a paintball marker, a paintball player may want to adjust the flow of compressed fluid provided to his paintball marker from the compressed fluid source 104. A higher flow output of compressed fluid translates into a higher pressure output at the outlet port and will provide a longer trajectory to a paintball shot out of the paintball marker, enabling a player to hit targets at a much larger distance.
Inversely, a lower flow output of compressed fluid translates into a lower pressure output at the outlet port and will provide a shorter trajectory to a paintball shot out of the paintball marker, enabling a player to direct paintballs in a short arced trajectory to hit targets over obstacles.
Now referring to FIGS. 7A, 7B and 7C, the operation of the pressure relief mechanism 124 will be detailed, in accordance with one embodiment of the present invention.
In a fully-closed position, the pressure relief piston 448 acts as a plug to the pressure relief conical end cavity communicating hole 338 and prevents movement of compressed fluid therethrough, as shown on FIG. 7A.
When the pressure relief knob 126 is rotated in a first direction, the pressure relief mechanism 124 is moved from a fully-closed position to an opened position, as shown on FIG. 7B. An opening 700 is created around the pressure relief piston head 450, providing fluid communication between the chamber connecting elbow 342 and the pressure relief channel 330 through the pressure relief conical end cavity communicating hole 338.
In an alternative embodiment, the movement of the pressure relief mechanism 124 from a fully-closed position to an opened position is achieved by a clockwise rotation of the pressure relief knob 126 and the movement of the pressure relief mechanism 124 from an opened position to a fully-closed position is achieved by a counter-clockwise rotation of the pressure relief knob 126.
Now referring to FIG. 7C, an amount of compressed fluid then enters the pressure relief channel 330 from the chamber connecting elbow 342 through the pressure relief conical end cavity communicating hole 338 and travels out of the chamber 302 to an ambient environment wherein the coupler assembly 100 is located through the pressure relief discharge duct 340.
In an alternative embodiment, the amount of compressed fluid does not travel from the chamber 302 to an ambient environment wherein the coupler assembly 100 is located, but travels instead through the pressure relief discharge duct 340 into a compressed fluid recuperation container such that the compressed fluid be reused or disposed of, the compressed fluid recuperation container being in fluid communication with the pressure relief discharge duct 340.
Now referring back to FIG. 7B, as the pressure relief knob 126 is rotated in a second, opposite direction, the pressure relief mechanism 124 is moved from an opened position towards a fully-closed position wherein fluid communication between the chamber connecting elbow 342 and the pressure relief channel 330 is prevented.
It will be appreciated by the skilled addressee that the usefulness of the pressure relief mechanism 124 is fully exploited when the pressure relief mechanism 124 is activated while the fluid control mechanism 120 is in a fully-closed position and an amount of pressure, created by an amount of compressed fluid being present inside the chamber 302, is built-up inside the chamber 302.
A user first moves the fluid control mechanism 120 to a fully-closed position, trapping an amount of compressed fluid in the downstream fluid circuit comprising the gauge port communicating channel 304, the pressure relief channel 330, the outlet port communicating channel 360 and the fluid-powered device 102, not shown in FIG. 7B.
Now referring to FIG. 7C, the user then moves the pressure relief mechanism 124 to an opened position, releasing the trapped compressed fluid from the downstream fluid circuit through the pressure relief discharge duct 340.
In the embodiment shown in FIG. 1 wherein the fluid-powered device 102 is a paintball marker, a paintball player may want to disconnect the paintball marker from the coupler assembly 100 after use, for storing or maintenance purposes. The paintball player first moves the fluid control mechanism 120 to a fully-closed position, and then moves the pressure relief mechanism 124 to an opened position, releasing thereby an amount of pressure built-up inside the paintball marker. The paintball player may now safely disconnect his paintball marker from the coupler assembly 100.
Now referring to FIGS. 8A and 8B, the selective connection and disconnection of the releasable member 150 from the coupler assembly 100 will be detailed, in accordance with one embodiment of the present invention.
As shown on FIG. 8A, when connected to the inlet connecting duct 230, the releasable member 150 provides fluid communication between the compressed fluid providing hose 106 and the inlet channel 322 of the chamber 302 through the releasable member central conduit 508. The inlet connecting duct end nipple 404 concentrically engages the releasable member central conduit 508, keeping the releasable member valve 510 in an open position. The inlet port swivel nut 232 securely engages the releasable member externally threaded portion 506 to prevent leakage of compressed fluid from the releasable member central conduit 508.
Now referring to FIG. 8B, a user first disengages the inlet port swivel nut 232 from the releasable member externally threaded portion 506. The user then disengages the inlet connecting duct end nipple 404 from the releasable member central conduit 508 by moving the releasable member 150 away from the inlet connecting duct 230.
As the inlet connecting duct end nipple 404 is disengaged from the releasable member central conduit 466, the releasable member valve 510 is no longer kept in an open position and moves to a closed position, preventing compressed fluid from traveling from the releasable member 150 through the releasable member central conduit 508. A closed fluid circuit comprising the compressed fluid source 104, not shown in FIG. 8B, the compressed fluid providing hose 106 and the releasable member 150 is now created.
It will be appreciated by the skilled addressee that the usefulness of the releasable member 150 is fully exploited when the releasable member 150 is disconnected from the inlet connecting duct 230 while the fluid control mechanism 120 is in a fully-closed position. In addition to the closed fluid circuit comprising the compressed fluid source 104, the compressed fluid providing hose 106 and the releasable member 150, a downstream fluid circuit comprising the gauge port communicating channel 304, the pressure relief channel 330, the outlet port communicating channel 360 and the fluid-powered device 102 is now created.
In the embodiment shown in FIG. 1 wherein the fluid-powered device 102 comprises a paintball marker and further wherein the compressed fluid source 104 comprises a compressed gas bottle, a paintball player may want to disconnect the compressed gas bottle from the coupler assembly 100 for maintenance or storage purposes or to refill the compressed gas bottle. The paintball player first moves the fluid control mechanism 120 to a fully-closed position, and then disconnects the releasable member 150 from the inlet connecting duct 230. The compressed gas bottle can now be stored away, maintained or refilled while an amount of compressed fluid remains trapped in the downstream fluid circuit comprising the gauge port communicating channel 304, the pressure relief channel 330, the outlet port communicating channel 360 and the fluid-powered device 102.
From this configuration, the paintball player may further want to store away the paintball marker. The paintball player moves the pressure relief mechanism 124 to an opened position, releasing an amount of compressed fluid trapped in the downstream fluid circuit. The paintball player may now safely disconnect the paintball marker from the coupler assembly 100 and store away the paintball marker, the compressed gas bottle and the coupler assembly 100.
In an alternative embodiment, with references to FIG. 1, the compressed fluid source engaging end 172 of the compressed fluid providing hose 106 is provided with a second check valve mechanism, not shown, sealingly mounted thereat. The second check valve mechanism, not shown, comprises an open position wherein the compressed fluid source 104 and the compressed fluid providing hose 106 are in fluid communication and a closed position wherein fluid communication between the compressed fluid source 104 and the compressed fluid providing hose 106 is prevented.
The second valve check mechanism, not shown, engages the compressed fluid source 104 such that the second check valve mechanism is in an open position when the compressed fluid providing hose 106 is connected to the compressed fluid source 104 and is in a closed position when the compressed fluid providing hose 106 is disconnected from the compressed fluid source 104.
The skilled addressee will appreciate that the second check valve mechanism, not shown, enables the disconnection of the compressed fluid providing hose 106 from the compressed fluid source 104 without leakage of compressed fluid from the compressed fluid source engaging end 172 of the compressed fluid providing hose 106.
This embodiment would allow a user to disconnect the compressed fluid providing hose 106 from the compressed fluid source 104 without leakage of compressed fluid from a fluid circuit comprising the compressed fluid providing hose 106, the coupler assembly 100 and the fluid-powered device 102.
In a preferred embodiment, the compressed fluid providing hose 106 comprises a compressed fluid source engaging releasable member, not shown, similar to the releasable member 150 of the coupler assembly 100, wherein the second check valve mechanism, not shown, is located. The compressed fluid source engaging releasable member, not shown, comprises a first, externally threaded portion adapted for sealingly and removably engaging the compressed fluid source 104 and a second, internally threaded portion adapted for sealingly engaging an externally threaded portion, not shown, provided with the compressed fluid source engaging end 172 of the compressed fluid providing hose 106.
It will be appreciated by the skilled addressee that in this embodiment, the compressed fluid providing hose 106 may be a hose known by the skilled addressee comprising two similar ends adapted for selectively engaging the releasable member 150 and the compressed fluid source engaging releasable member, not shown.
In an embodiment wherein the fluid-powered device 102 comprises a paintball marker and further wherein the compressed fluid source 104 comprises a compressed gas bottle, the paintball player may disconnect the compressed fluid providing hose 106 from the compressed gas bottle without leakage of compressed fluid from the compressed fluid source engaging end 172 while the fluid control mechanism 120 is in an open position.
The paintball player may further disconnect the releasable member 150 from the inlet connecting duct 230 without leakage of fluid from the releasable member central conduit 508 while the fluid control mechanism 120 is in a closed position, creating a closed fluid circuit comprising the compressed fluid providing hose 106.
This would enable the paintball player to disconnect the compressed gas bottle from the compressed fluid providing hose 106 for maintenance or storage purposes or to refill the compressed gas bottle without any loss of compressed fluid from the compressed fluid providing hose 106.
An alternative embodiment of the present invention will now be described, with references to FIG. 9A and 9B.
In an alternative embodiment shown in FIG. 9A, the outwardly curved left face 206 is further provided with a pressure limiting port 900 located above the pressure relief mechanism 124 and vertically aligned therewith. The pressure limiting port 900 is provided for sealingly receiving a pressure limiting mechanism 902 therein.
The purpose of the pressure limiting mechanism 902 is to prevent an amount of pressure, created by an amount of compressed fluid present in the chamber 302, from exceeding a predetermined amount of pressure. In its initial position, the pressure limiting mechanism 902 is designed to act as a plug of the pressure limiting port 900 when the amount of pressure inside the chamber 302 is below a predetermined amount of pressure.
As shown in FIG. 9B, the pressure limiting mechanism 902 is further designed to move to an activated position, allowing the compressed fluid to travel outwardly from the chamber 302 through the pressure limiting port 900 when the amount of pressure inside the chamber 302 is above a predetermined amount of pressure.
In the embodiment shown in FIGS. 9A and 9B, the pressure limiting mechanism 902 comprises a bursting disc set to rupture at an amount of pressure inside the chamber 302 equal to 1000 psi. The bursting disc is a non-reversible mechanism and must be replaced once it has been activated.
In an alternative embodiment, the pressure limiting mechanism 902 comprises a reversible pressure relief valve which may be reset to its initial position after activation.
It will be appreciated by the skilled addressee that the main benefit of the present invention is the combination of multiple features into one compact coupler assembly 100 and is especially useful when used as a coupling of a paintball marker and a compressed gas bottle. The coupler assembly 100 provides a paintball player with means to adjust the trajectory of a paintball fired from the paintball marker using the fluid control mechanism 120, means to safely disconnect the paintball marker from the coupler assembly 100 with a combined use of the fluid control mechanism 120 and the pressure relief mechanism 124 and means to safely disconnect the compressed gas bottle from the coupler assembly 100 with a combined use of the fluid control mechanism 120 and the releasable member 150.
Furthermore, it will be appreciated that the coupler assembly hereby described is simple enough to be easily manufactured using basic manufacturing techniques known to the addressee such as milling, turning, tapping, welding, gluing and the like. Additionally, as the fluid control mechanism 120, the pressure relief mechanism 124 and the releasable member 150 are provided as detachable parts from the hollow coupling body 200, they can easily replaced by similar parts in case of malfunction, damage or normal wear of the parts.
Although the above description relates to a specific preferred embodiment as presently contemplated by the inventor, it will be understood that the invention in its broad aspect includes mechanical and functional equivalents of the elements described herein.

Claims

1. A coupler assembly for dispensing fluid from a compressed fluid source, the coupler assembly comprising:

a chamber;

an inlet port, said inlet port comprising a releasable member to be connected to a hose originating from a compressed fluid source, said releasable member comprising a valve, said inlet port further comprising a receiving member for receiving the releasable member, the receiving member being in fluid communication with the chamber;

an outlet port in fluid communication with the chamber; and

a fluid control mechanism operatively coupled to the chamber for controlling an amount of fluid dispensed from the inlet port to the outlet port.

2. The coupler assembly as claimed in claim 1, wherein said fluid control mechanism comprises a fluid control piston selectively moving between a closed position wherein dispensing of fluid from the inlet port to the outlet port is prevented and an open position wherein fluid is dispensed from the inlet port to the outlet port.

3. The coupler assembly as claimed in claim 1, wherein said fluid control mechanism is operated manually using a fluid control knob.

4. The coupler assembly as claimed in claim 1, wherein said fluid control mechanism is operated using actuation means operatively connected thereto, said automated actuation means being selected from a group consisting of an electric actuator, a pneumatic actuator and a hydraulic actuator.

5. The coupler assembly as claimed in claim 1 further comprising a pressure relief mechanism to selectively evacuate, from said chamber, an amount of pressure created by a an amount of compressed fluid therein, said pressure relief mechanism being operatively coupled to said chamber.

6. The coupler assembly as claimed in claim 5, wherein said pressure relief mechanism comprises a pressure relief piston selectively moving between a closed position wherein evacuation of an amount of pressure from said chamber is prevented and an open position wherein an amount of pressure is evacuated from said chamber.

7. The coupler assembly as claimed in claim 5, wherein said pressure relief mechanism is operated manually using a pressure relief knob.

8. The coupler assembly as claimed in claim 5, wherein said pressure relief mechanism is operatively connected to actuation means operatively connected thereto, said actuation means being selected from a group consisting of an electric actuator, a pneumatic actuator and a hydraulic actuator.

9. The coupler assembly as claimed in claim 1, wherein said valve comprises a spring-loaded check valve.

10. The coupler assembly as claimed in claim 9, wherein said receiving member comprises an inlet connecting duct provided with an inlet connecting duct end nipple concentrically and outwardly extending therefrom for activating said spring-loaded check valve.

11. The coupler assembly as claimed in claim 10, wherein said inlet connecting duct nipple is axially centered on said inlet connecting duct.

12. The coupler assembly as claimed in claim 10, wherein said receiving member comprises an inlet port swivel nut concentrically mounted on said inlet connecting duct.

13. The coupler assembly as claimed in claim 12, wherein said inlet port swivel nut has a knurled outer surface.

14. The coupler assembly as claimed in claim 1 further comprising a pressure gauge port for receiving a pressure gauge therein, said pressure gauge port being in fluid communication with said chamber.

15. The coupler assembly as claimed in claim 15 further comprising said pressure gauge mounted in said gauge port.

16. The coupler assembly as claimed in claim 1 further comprising a pressure limiting mechanism operatively coupled to said chamber for preventing an amount of pressure, created by an amount of compressed fluid inside said chamber, from exceeding a predetermined amount of pressure.

17. The coupler assembly as claimed in claim 16, wherein said pressure limiting mechanism comprises a bursting disc.

18. The coupler assembly as claimed in claim 1, wherein said outlet port delivers compressed fluid to a fluid-powered device.

19. The coupler assembly as claimed in claim 18, wherein said fluid-powered device comprises a paintball marker.

20. The coupler assembly as claimed in claim 1, wherein said hose further comprises a check valve mechanism located at a compressed fluid source engaging end thereof, said compressed fluid source engaging end sealingly and removably engaging said compressed fluid source, said check valve mechanism comprising an open position wherein said compressed fluid source and said hose are in fluid communication and a closed position wherein fluid communication between said compressed fluid source and said hose is prevented.

21. The coupler assembly as claimed in claim 1, wherein said coupler assembly is manufactured from a rigid material selected from a list comprising aluminum, stainless steel, titanium, magnesium, brass, cast iron, PVC and ABS.