US20080216806A1

US20080216806A1 - Blowgun

Info

Publication number: US20080216806A1
Application number: US11/684,399
Authority: US
Inventors: Shu-Mei Tseng
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-09
Filing date: 2007-03-09
Publication date: 2008-09-11

Abstract

A blowgun, which is used for firing bullets, comprising: a grip which is comprised a loading gate, a lead pipe, and a guiding flange; a trigger which is installed slidably at the grip, and a interference bar is installed at a part of the trigger, which is formed in the inner of the grip; a mouthpiece which is comprised a tubular part at one end thereof and a conical part at another end thereof; a barrel; a pushing bar which is installed slidably in the lead pipe and can be slid between the mouthpiece and the barrel; and a first recoil spring which is installed in the lead pipe; wherein the lead pipe is formed at the rear of the barrel and through inner of the grip; the loading gate is connected to the lead pipe; the guiding flange is installed in the grip; the tubular part is coupled together with the lead pipe; and during an interval the trigger being compressed, the interference bar of the trigger brings the pushing bar to approach the mouthpiece and to compress the first recoil spring until a chamber which is connected to the loading gate between the pushing bar and the barrel is enough for containing the bullet, and then the first recoil spring returns and brings the pushing bar to approach the barrel and to push the bullet into the barrel while the interference bar contacts with the guiding flange and releases the pushing bar.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a blowgun and particularly to a blowgun that has a mouthpiece and a mechanism for firing bullets.
2. Description of the Prior Art
Conventional paintball guns are usually used in the war game which uses paintballs to act for real bullets and plays like a real war. In some situations, a more safe game is desirous especially for children. However, most paintball guns used in the war game are not satisfied the aforesaid conditions and need inextricable protection to get in return safe of player or to prevent accident.
Thus the present invention is aimed to provide a blowgun that overcomes the drawbacks of the paintball guns of the prior art, and the blowgun according to the present invention is beneficial to firing bullets.

SUMMARY OF THE INVENTION

In view of the aforesaid problems occurred to the conventional paintball guns, the present invention aims to provide a blowgun for war game, children or otherwise.
Another object of the invention is to provide a blowgun that has a mouthpiece to provide high pressure and a mechanism to load bullets for firing bullets by blowing.
Yet another object of the invention is to provide a blowgun that has at least one magazine for containing bullets and a bracket for anchoring the magazine.
To achieve the foregoing objects, the blowgun according to the invention comprising: a grip which is comprised a loading gate, a lead pipe, and a guiding flange; a trigger which is installed slidably at the grip, and a interference bar is installed at a part of the trigger, which is formed in the inner of the grip; a mouthpiece which is comprised a tubular part at one end thereof and a conical part at another end thereof; a barrel; a pushing bar which is installed slidably in the lead pipe and can be slid between the mouthpiece and the barrel; and a first recoil spring which is installed in the lead pipe; wherein the lead pipe is formed at the rear of the barrel and through inner of the grip; the loading gate is connected to the lead pipe; the guiding flange is installed in the grip; the tubular part is coupled together with the lead pipe; and during an interval the trigger being compressed, the interference bar of the trigger brings the pushing bar to approach the mouthpiece and to compress the first recoil spring until a chamber which is connected to the loading gate between the pushing bar and the barrel is enough for containing the bullet, and then the first recoil spring returns and brings the pushing bar to approach the barrel and to push the bullet into the barrel while the interference bar contacts with the guiding flange and releases the pushing bar.
The pushing bar comprises a second contact part by which the pushing bar contacts with the interference bar.
The interference bar comprises a first contact part that an upper part thereof can be contacted with the second contact part and a lower part thereof can't be contacted with the interference bar; and during the interval the trigger being compressed and when the chamber is enough for containing the bullet, the lower part of the interference bar contacts with the guiding flange.
The blowgun further comprises a second recoil spring which is installed in the grip for opposing being compressed of the trigger.
The blowgun further comprises a first holding part which is installed in the barrel for blocking the bullet at the rear of the first holding part in the barrel.
The blowgun further comprises a second holding part which is installed at the rear of the first holding part in the barrel for restricting the bullet in the barrel between the first holding part and the second holding part.
The front end and the rear end of the bullet in the barrel respectively are contacted with the first holding part and the second holding part tightly.
The first holding part and the second holding part both are O-rings.
The blowgun further comprises a sleeve which is installed at a front part of the mouthpiece and made of aluminum.
The blowgun further comprises a bracket, which is installed on the barrel, and at least a magazine, which is installed on the bracket and contains a plurality of bullets.
The blowgun further comprises a receiver which is installed on the loading gate and connected with the loading gate for holding the magazine.
In conclusion, the blowgun of the present invention can be operated to fire bullets by blowing and is safer than paintball guns of prior arts so that the blowgun of the present invention is more adaptable to children. Besides, the trigger can bring the pushing bar to a position until a bullet is allowed to be loaded in the chamber, and the pushing bar can automatically push the bullet into the barrel by the first recoil spring. Therefore, the bullet is ready to fire as the trigger reaches the position where the bullet is loaded in the chamber so that the responding time is short and is helpful to the user.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an embodiment of the blowgun of the invention;

FIG. 2 is an exploded view of an embodiment of the blowgun of the invention;

FIG. 3 is a sectional view of the partial blowgun of the invention;

FIG. 4A to FIG. 4E are other sectional views of the partial blowgun of the invention; and

FIG. 5 is another sectional view of the partial blowgun of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

While the present invention is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described a presently preferred embodiment with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiment illustrated.
Referring to FIGS. 1, 2 and 3 which respectively are a perspective view, an exploded view, and a sectional view of an embodiment of the blowgun of the invention, the blowgun 100 comprises a grip 110, a first recoil spring 117, a trigger 120, a mouthpiece 130, a barrel 140, and a pushing bar 150. The grip 110 has a loading gate 112 and a lead pipe 114, the lead pipe 114 is through inner of the grip 110, and the loading gate 112 is connected to the lead pipe 114. The inner of the grip 110 has a guiding flange 116. The trigger 120 is installed slidably at the grip 110, and a interference bar 122 is installed at a part of the trigger 120, which is formed in the inner of the grip 110. The front of the mouthpiece 130 is a tubular part 132 and the rear of the mouthpiece 130 is a conical part 134. The tubular part 132 is coupled together with a lead pipe 114 while the tubular part 132 can be overlapped with the lead pipe 114, and the conical part 134 is formed as a hopper for blowing. The lead pipe 114 is formed at the rear of the barrel 140, and the pushing bar 150 is installed slidably in the lead pipe 114 and can be slid between the mouthpiece 130 and the barrel 140. Besides, a bracket 170 is installed on the barrel 140, and the bracket 170 holds a plurality of magazines 180. Each of the magazine 180 is constructed of a loading tube 182 and cap 184 and contains a plurality of bullets 70 which are inserted a rubber bag individually to form a paint ball. The inner of the lead pipe 114 is installed a first recoil spring 117, the first recoil spring 117 can be a spiral spring in the embodiment as the figures showed.
Because the mouthpiece 130 is made of a soft material such as plastic or rubber, a sleeve 160 is inserted in the inner surface of the tubular part 132 of the mouthpiece 130 for assembling the tubular part 132 of the mouthpiece 130 with the grip 110 while the sleeve 160 is made of a hard material such as aluminum or aluminum alloy. The pushing bar 150 has a retainer flange 154 and a second contact part 152, and one end of the said first recoil spring 117 is contacted with the retainer flange 154 and another end of the said first recoil spring 117 is contacted with the sleeve 160. Moreover, the second contact part 152 is installed at a lower part of the pushing bar 150, and the pushing bar 150 contacts the interference bar 122 by the second contact part 152. The interference bar 122 has a first contact part 122 a that the upper part thereof can be contacted with the second contact part 152 and the lower part thereof can't be contacted with the interference bar 122.
The said blowgun 100 further has a second recoil spring 118. One end of the second recoil spring 118 is connected to the extended bar 124 of the trigger 120, another end of the second recoil spring 118 is connected to the grip 110. The blowgun 100 further has a first holding part 142 and a second holding part 144. Each of the first holding part 142 and the second holding part 144 can be an O-ring, and the first holding part 142 and the second holding part 144 are respectively installed at a groove 141 and a groove 141′ of the barrel 140. Each of the groove 141 and the groove 141′ respectively has a plurality of openings 141 a and a plurality of openings 141 a′ (referring to FIG. 3 which omits the first holding part 142 and the second holding part 144 to accentuate the opening 141 a and the opening 141 a′), and inner parts of the first holding part 142 and the second holding part 144 are respectively through out the opening 141 a and the opening 141 a′ to embed at the barrel 140 and to form bosses at the inner surface of the barrel 140 (referring to FIG. 5). The blowgun 100 further has a sight 146, and the sight 146 is installed at the top surface of the rear part of the barrel 140 for sighting.
The following will describe an operation of the blowgun 100 of the present invention. Referring to FIG. 1 and FIG. 4A, after one of the magazines 180 is taken form the bracket 170 and the cap 184 of the loading tube 182 is taken off, the loading tube 182 which is taken can insert into a receiver 190 and the blowgun 100 is ready for fire.
Then, referring to FIG. 4B, after the trigger 120 is pressed, the interference bar 122 pushes the second contact part 152 to move. The second contact part 152 brings the pushing bar 150 to approach the mouthpiece 130 because the second contact part 152 is firmed at the pushing bar 150. At the same time, the pushing bar 150 compresses the first recoil spring 117, and a space is formed between the pushing bar 150 and barrel 140 and defines the chamber 119. Moreover, referring to FIG. 4C, the lowest bullet 70 in the loading gate 112 falls into the chamber 119 when the space of the chamber 119 becomes almost equal to the bullet 70.
Referring to FIG. 4D and FIG. 4E, after the bullet 70 falls into the chamber 119, the lower of the first contact part 122 a of the interference bar 122 contacts the guiding flange 116, and the first contact part 122 a of the interference bar 122 releases the pushing bar 150 and moves along the surface of the guiding flange 116. Then, the first recoil spring 117 which is compressed releases elastic potential to bring the pushing bar 150 to approach the barrel 140, and the bullet 70 is pushed into the barrel 140 by the pushing bar 150 (showed as FIG. 4E).
Besides, if release the trigger 120 in a state as FIG. 4D shows, the second recoil spring 118 which is compressed returns the trigger 120 to a initial state as FIG. 4A shows.
Referring to FIG. 4E and FIG. 5 which shows a schematic view of the inner of the barrel 140 which has a bullet 70 inside, after the bullet 70 is pushed into the barrel 140 by the pushing bar 150, the bullet 70 is positioned between the first holding part 142 and the second holding part 144. The more particular embodiment is that the bullet 70 is griped by the first holding part 142 and the second holding part 144. After the bullet 70 is positioned in the barrel 140, blowing the mouthpiece 130 can accrue a higher pressure to make the bullet 70 pass the first holding part 142 and loose off from the barrel 140.
Although the pushing bar 150 pushes the interference bar 122 by the second contact part 152 in the above embodiment, the second contact part 152 can easily be replaced with the mechanism topology. For an example, the pushing bar 150 has a recess (not showed in the figures) which replaces the second contact part 152, and the interference bar 122 can contact to the recess. Besides, the installation of the bracket 170, the magazine 180, and the receiver 190 makes convenient for supplying the bullets 70, but these structures are optional and depend on demand in use or any other substitute which can replaced them with the mechanism topology.
In conclusion, the blowgun 100 of the present invention can be operated to fire bullets 70 by blowing and is safer than paintball guns of prior arts so that the blowgun 100 of the present invention is more adaptable to children. Besides, the trigger 120 can bring the pushing bar 150 to a position until a bullet 70 is allowed to be loaded in the chamber 119, and the pushing bar 150 can automatically push the bullet 70 into the barrel 140 by the first recoil spring 117. Therefore, the bullet 70 is ready to fire as the trigger 120 reaches the position where the bullet 70 is loaded in the chamber 119 so that the responding time is short and is helpful to the user.
Moreover, because of the resistance caused from the first holding part 142, the bullet 70 is held between the first holding part 142 and the second holding part 144 until the pressure due to blowing of the mouthpiece 130 is higher enough. Therefore, the blowing pressure which can fire the bullet 70 must be over a minimum value so that the bullet 70 shot from the barrel 140 has high speed and the amusement of the war game is kept. Besides, the first holding part 142 and the second holding part 144 can keep the bullet 70 at the barrel 140 firmly, and the first holding part 142 and the second holding part 144 also increase air seal of the interface between the barrel 140 and the bullet 70.
While the preferred embodiment of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.

Claims

1. A blowgun, which is used for firing bullets, comprising:

a grip which is comprised a loading gate, a lead pipe, and a guiding flange;

a trigger which is installed slidably at the grip, and a interference bar is installed at a part of the trigger, which is formed in the inner of the grip;

a mouthpiece which is comprised a tubular part at one end thereof and a conical part at another end thereof;

a barrel;

a pushing bar which is installed slidably in the lead pipe and can be slid between the mouthpiece and the barrel; and

a first recoil spring which is installed in the lead pipe;

wherein the lead pipe is formed at the rear of the barrel and through inner of the grip; the loading gate is connected to the lead pipe; the guiding flange is installed in the grip; the tubular part is coupled together with the lead pipe; and during an interval the trigger being compressed, the interference bar of the trigger brings the pushing bar to approach the mouthpiece and to compress the first recoil spring until a chamber which is connected to the loading gate between the pushing bar and the barrel is enough for containing the bullet, and then the first recoil spring returns and brings the pushing bar to approach the barrel and to push the bullet into the barrel while the interference bar contacts with the guiding flange and releases the pushing bar.

2. The blowgun recited in claim 1, wherein the pushing bar comprises a second contact part by which the pushing bar contacts with the interference bar.

3. The blowgun recited in claim 2, wherein the interference bar comprises a first contact part that an upper part thereof can be contacted with the second contact part and a lower part thereof can't be contacted with the interference bar; and during the interval the trigger being compressed and when the chamber is enough for containing the bullet, the lower part of the interference bar contacts with the guiding flange.

4. The blowgun recited in claim 1, wherein the blowgun further comprises a second recoil spring which is installed in the grip for opposing being compressed of the trigger.

5. The blowgun recited in claim 1, wherein the blowgun further comprises a first holding part which is installed in the barrel for blocking the bullet at the rear of the first holding part in the barrel.

6. The blowgun recited in claim 5, wherein the blowgun further comprises a second holding part which is installed at the rear of the first holding part in the barrel for restricting the bullet in the barrel between the first holding part and the second holding part.

7. The blowgun recited in claim 6, wherein the front end and the rear end of the bullet in the barrel respectively are contacted with the first holding part and the second holding part tightly.

8. The blowgun recited in claim 6, wherein the first holding part and the second holding part both are O-rings.

9. The blowgun recited in claim 5, wherein the first holding part is an O-ring.

10. The blowgun recited in claim 1, wherein the blowgun further comprises a sleeve which is installed at a front part of the mouthpiece and made of aluminum.

11. The blowgun recited in claim 1, wherein the blowgun further comprises a bracket, which is installed on the barrel, and at least a magazine, which is installed on the bracket and contains a plurality of bullets.

12. The blowgun recited in claim 11, wherein the blowgun further comprises a receiver which is installed on the loading gate and connected with the loading gate for holding the magazine.