EP0178573A2 - A pressure fluid dispenser and method of making the same - Google Patents
A pressure fluid dispenser and method of making the same Download PDFInfo
- Publication number
- EP0178573A2 EP0178573A2 EP85112729A EP85112729A EP0178573A2 EP 0178573 A2 EP0178573 A2 EP 0178573A2 EP 85112729 A EP85112729 A EP 85112729A EP 85112729 A EP85112729 A EP 85112729A EP 0178573 A2 EP0178573 A2 EP 0178573A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- coating
- pleats
- fluid
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
- B65D83/0061—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by the contracting forces inherent in the bag or a sleeve fitting snugly around the bag
Definitions
- This invention relates to a fluid dispenser of the kind which has an outside casing, an inner flexible fluid container and means for applying pressure on the fluid w container to expel the fluid through a valve mechanism.
- the flexible container is disposed within a rigid casing.
- Means are provided within the casing to apply continuous pressure on the container walls and the fluid therein.
- a valve is provided on the mouth of the container which is activated whenever a fluid is to be dispensed.
- the expelling force is provided by an elastomeric sleeve which surrounds the fluid container.
- the container In order to insure that substantially all the contents of a container are removable, the container must have a shape which makes it possible to collapse the container completely, i.e. with substantially no internal space left.
- bags were provided which were radially foldable so that in their collapsed state they formed a disc. However the disc still had a relatively large diameter and inherently some residue always remained inside it.
- An alternate method consisted of using an elongated bag with an open end attached to a dispensing valve, a closed end, and a cylindrical wall therebetween in which pleats are provided so as to divide the walls into sections which can fold in on each other two-by-two.
- An objective of the present invention is to provide a dispenser with means for collapsing the flexible bag contained therein in a controlled manner until substantially all the fluid disposed within the bag has been expelled.
- Another objective is to provide a dispenser which is relatively inexpensive.
- a further objective is to provide a method of making said dispenser.
- a fluid dispenser comprises a tubular bag made of a flexible, substantially inexpandable material for containing the fluid to be dispensed, said bag having a mouth adapted to be secured to a valve mechanism, and having a plurality of axial, longitudinal pleats; and a resilient tubular member substantially surrounding said bag and capable of being expanded radially outward as said bag is filled with a pressurized fluid so as to provide sufficient external pressure on said bag to eject said pressurized fluid when said valve mechanism is selectively actuated.
- the pleated bag is provided with a coating by suitable means such as by dipping into a suitable latex so that a thin, even coating is formed thereon except for the pleat valleys where adjacent walls are bridged by a bead.
- a dispenser with a pressurized or barrier bag comprises a bag assembly 10 (see Figure 1) which is typically inserted in an enclosure 11.
- the assembly ccmprises a tubular bag 12 with a closed bottom end 14 and a mouth 16.
- a metal cap 18 is fitted over the mouth 16.
- the cap has a central orifice 20 communicating with the interior of the cap.
- a valve assembly 22 adapted to release pressurized fluid contained within the bag when activated through orifice 20.
- Such a valve is described in the above-mentioned patent No. 4,387,833.
- the bag is surrounded by a relatively thin and resilient coating,24 which conforms to the shape of the bag.
- the coating is described more fully below.
- the coated bag is disposed within an elastomeric member 26 which is commonly described as an energy tube.
- the member 26 is essentially coextensive with bag 12.
- the bag is first formed into the shape of a bottle as shown in Figure 2.
- the bag is made of a flexible but substantially nonresilient material which is relatively inert so that it will not impart any taste or smell to its contents.
- the bag may be made out of a plastic material such as nylon, polypropylene, polyester or SARANEX. The material may be formed into the shape shown in Figure 2 by blow molding or similar well-known methods in the art.
- the bottle shaped bag is pleated into the shape shown in Figures 4 and 5.
- the bag has a plurality of longitudinal or axial pleats defined by crests 28 separated by troughs or valleys 30. Since the bag is flexible it may be compressed radially until the inner walls 32 of each pleat 28 essentially contact or fold over each other. When the bag is compressed or folded in this manner the onlv empty space left in the bag is a relatively narrow tube 34 defined by troughs 30.
- the pleated bag can be programmed or constrained to re-fold in a very precise and controlled manner after being filled with a product by enveloping it with a coating applied over the pleats.
- a rubber latex coating is applied to the exterior surface of the bag.
- the latex is chosen so that when it is applied to the bag, it forms a smooth, even, elastic coating on the bag with a bead or rib being generated to fill the bottom of the pleat valleys 30, as shown at 36 on Figure 6.
- the size of the bead depends on the density and viscosity of the latex.
- Latex formulations similar to those used for making different rubber products, such as balloons, surgical gloves, etc. are suitable. Some change in solids content and/or viscosity may be required but these techniques are well known to those in this industry.
- the latex is a water based emulsion containing the rubber, filler etc. at room temperature.
- the bag shaped as shown in Figure 4 is dipped into the bath and removed. After the excess latex drains off, the coated bags are dipped into a coagulant, drained, then dipped into water for rinsing and then are heated in an oven, at the maximum temperature which will not affect the container, to drive off the water and to form a solid continuous elastic surface coating on the bag.
- the coating so formed has sufficient adhesion to the bag to withstand further handling.
- the bag is now ready for the final assembly.
- the valve assembly 22 and cap 20 are fitted over mouth 16 of the bag.
- the elastomeric member 26 is then expanded and pulled over the bag into the position shown in Figure 1.
- the inner diameter of member 26 is smaller than the outer diameter of the coated bag shown in Figure 4 so that the pleats of the bag are forced close together. During this later operation a vacuum may be applied to the bottle to draw in the pleats thereby making the assembly easier.
- a fluid is fed under pressure into the bag forcing it to expand substantially into the shape of Figure 2.
- Member 26 also expands.
- the elastomeric member 26 applies sufficient force in the bag to keep it pressurized after it (the bag) has been disconnected from the pressurized fluid source.
- the fluid may be dispensed by activating the valve assembly 22.
- the ribs or beads of the coating disposed in the pleat valleys force the bag to regain its pleated shape in a smooth, orderly fashion so that extraneous creases are not formed, until the bag is reduced to its minimum or collapsed stage at which point essentially all the fluid contained therein has been removed.
- Figure 8 shows a cross-sectional view of a bag with a 1.9gm nominal dry weight latex coating taken along lines 8-8 of Figure 7.
- Figures 9 and 10 show the same view of a bag with a 5gm nominal dry weight latex coating and no coating respectively. These nominal weights refer to the dry weight of the latex for a nominal 7 fl. oz. container. Smaller and larger containers would have corresponding different weights.
- FIG. 8 A comparison of Figures 8 and 10 shows that the bag without a coating was refolded in a haphazard manner so that in its final stage it still contains many voids and the pleats are not discernible.
- the bag assembly of Figure 8 has been deformed into an ellipse but there are less voids than in Figure 10 and the pleats are readily identifiable.
- Figure 9 shows that the bag having a 5g latex reforms into a configuration with the least number of voids and its pleats are folded evenly.
- figures 8-10 show the effectiveness of the invention to control the refolding of the bag.
- the coating has a relatively non-slip surface so that when the coated bag is disposed within the energy tube sufficient frictional forces develop between the bag and the tube to prevent the tube from slipping axially during its expansion and contraction.
- slipping was found to be undesirable because if the tube slips axially some portions of it become more expanded than other portions and therefore during contractions the bags were subjected to uneven pressure.
- slippage could also be prevented by roughing the outer surface of the bag, it has been found that such an operation also introduces undue stress in the structure of the bag thereby weakening it.
Abstract
Description
- This invention relates to a fluid dispenser of the kind which has an outside casing, an inner flexible fluid container and means for applying pressure on the fluid w container to expel the fluid through a valve mechanism.
- Flexible fluid dispensers which are caused to collapse when the fluid is to be expelled have various uses. Recently interest in these types of dispensers has increased because they provide a relatively inexpensive alternative to the aerosol dispensers which make use of a pressurized fluorocarbon gas as a propellant and which have become environmentally unacceptable.
- In the most common of prior art containers the walls of the dispenser are manually squeezed to dispense their contents.
- In a more complex prior art dispenser, the flexible container is disposed within a rigid casing. Means are provided within the casing to apply continuous pressure on the container walls and the fluid therein. A valve is provided on the mouth of the container which is activated whenever a fluid is to be dispensed. The expelling force is provided by an elastomeric sleeve which surrounds the fluid container.
- In order to insure that substantially all the contents of a container are removable, the container must have a shape which makes it possible to collapse the container completely, i.e. with substantially no internal space left. Initially bags were provided which were radially foldable so that in their collapsed state they formed a disc. However the disc still had a relatively large diameter and inherently some residue always remained inside it. An alternate method consisted of using an elongated bag with an open end attached to a dispensing valve, a closed end, and a cylindrical wall therebetween in which pleats are provided so as to divide the walls into sections which can fold in on each other two-by-two. While this arrangement was successful it still shared a basic problem common with all flexible containers, namely that the manner in which the bag folded or collapsed could not be precisely controlled so that often extraneous creases developed which did not permit all the contents of the bag to be dispensed.
- In the United States Patent No. 4,387,833 issued June 14, 1983, and incorporated herein by reference I disclosed a dispenser in which an extra sleeve is provided to keep the energy sleeve from slipping in the axial direction. The sleeve is made of a woven material in such a manner that it can expand and qontract radially but not axially. However the sleeve did not control in the manner in which the container folded.
- An objective of the present invention is to provide a dispenser with means for collapsing the flexible bag contained therein in a controlled manner until substantially all the fluid disposed within the bag has been expelled.
- Another objective is to provide a dispenser which is relatively inexpensive.
- A further objective is to provide a method of making said dispenser.
- Other objectives and advantages'of the invention shall become apparent in the following description of the invention. According to this invention, a fluid dispenser comprises a tubular bag made of a flexible, substantially inexpandable material for containing the fluid to be dispensed, said bag having a mouth adapted to be secured to a valve mechanism, and having a plurality of axial, longitudinal pleats; and a resilient tubular member substantially surrounding said bag and capable of being expanded radially outward as said bag is filled with a pressurized fluid so as to provide sufficient external pressure on said bag to eject said pressurized fluid when said valve mechanism is selectively actuated. The pleated bag is provided with a coating by suitable means such as by dipping into a suitable latex so that a thin, even coating is formed thereon except for the pleat valleys where adjacent walls are bridged by a bead.
-
-
Fiqure 1 shows a bag assembly inserted in an enclosure; - Figure 2 shows the flexible bag produced by molding;
- Figure 3 shows a bottom view of the bag after molding;
- Figure 4 shows the bag of Figure 3 after it has been pleated;
- Figure 5 shows a bottom view of Figure 4;
- Figure 6 shows a partial sectional view of the bag with the coating provided on the bag;
- Figure 7 shows the bag assembly according to this invention;
- Figure 8 shows a sectional view taken along line 8-8 of Figure 7 of a bag assembly with a 1.9 gm coating after the bag has been refolded;
- Figure 9 shows a sectional view taken along line 8-8 of Figure 7 of a bag assembly with a 5gm coating; and
- Figure 10 shows a sectional view taken along line 8-8 of Figure 7 of a bag assembly without a coating.
- In the following description any reference to either orientation or direction is intended for the purpose of illustration and is not to be interpreted as a limitation of the invention.
- A dispenser with a pressurized or barrier bag comprises a bag assembly 10 (see Figure 1) which is typically inserted in an
enclosure 11. The assembly ccmprises atubular bag 12 with a closed bottom end 14 and amouth 16. Ametal cap 18 is fitted over themouth 16. The cap has acentral orifice 20 communicating with the interior of the cap. Inside the mouth and concentric therewith is avalve assembly 22 adapted to release pressurized fluid contained within the bag when activated throughorifice 20. Such a valve is described in the above-mentioned patent No. 4,387,833. After the bag assembly is inserted in theenclosure 11 anactuator 23 is mounted on top. The actuator has ahollow stem 25 which extends through 20 and releases the fluid when the activator is pressed downward. - The bag is surrounded by a relatively thin and resilient coating,24 which conforms to the shape of the bag. The coating is described more fully below. The coated bag is disposed within an
elastomeric member 26 which is commonly described as an energy tube. Themember 26 is essentially coextensive withbag 12. - In order to obtain the necessary shape the bag is first formed into the shape of a bottle as shown in Figure 2. Preferably the bag is made of a flexible but substantially nonresilient material which is relatively inert so that it will not impart any taste or smell to its contents. For example the bag may be made out of a plastic material such as nylon, polypropylene, polyester or SARANEX. The material may be formed into the shape shown in Figure 2 by blow molding or similar well-known methods in the art.
- Next the bottle shaped bag is pleated into the shape shown in Figures 4 and 5. In this form the bag has a plurality of longitudinal or axial pleats defined by
crests 28 separated by troughs orvalleys 30. Since the bag is flexible it may be compressed radially until theinner walls 32 of each pleat 28 essentially contact or fold over each other. When the bag is compressed or folded in this manner the onlv empty space left in the bag is a relativelynarrow tube 34 defined bytroughs 30. - The present inventor has found that the pleated bag can be programmed or constrained to re-fold in a very precise and controlled manner after being filled with a product by enveloping it with a coating applied over the pleats. Preferably a rubber latex coating is applied to the exterior surface of the bag. The latex is chosen so that when it is applied to the bag, it forms a smooth, even, elastic coating on the bag with a bead or rib being generated to fill the bottom of the
pleat valleys 30, as shown at 36 on Figure 6. The size of the bead depends on the density and viscosity of the latex. - Several different rubber-like latex material have been tried and it has been found that pre-vulcanized rubber or a synthetic isoprene are most suitable for the coating.
- Latex formulations similar to those used for making different rubber products, such as balloons, surgical gloves, etc. are suitable. Some change in solids content and/or viscosity may be required but these techniques are well known to those in this industry.
- The latex is a water based emulsion containing the rubber, filler etc. at room temperature.The bag shaped as shown in Figure 4 is dipped into the bath and removed. After the excess latex drains off, the coated bags are dipped into a coagulant, drained, then dipped into water for rinsing and then are heated in an oven, at the maximum temperature which will not affect the container, to drive off the water and to form a solid continuous elastic surface coating on the bag. The coating so formed has sufficient adhesion to the bag to withstand further handling.
- The bag is now ready for the final assembly. The
valve assembly 22 andcap 20 are fitted overmouth 16 of the bag. Theelastomeric member 26 is then expanded and pulled over the bag into the position shown in Figure 1. Preferably the inner diameter ofmember 26 is smaller than the outer diameter of the coated bag shown in Figure 4 so that the pleats of the bag are forced close together. During this later operation a vacuum may be applied to the bottle to draw in the pleats thereby making the assembly easier. - As previously described, a fluid is fed under pressure into the bag forcing it to expand substantially into the shape of Figure 2.
Member 26 also expands. Theelastomeric member 26 applies sufficient force in the bag to keep it pressurized after it (the bag) has been disconnected from the pressurized fluid source. Thus the fluid may be dispensed by activating thevalve assembly 22. As more and more fluid is withdrawn or ejected from the bag, the ribs or beads of the coating disposed in the pleat valleys, force the bag to regain its pleated shape in a smooth, orderly fashion so that extraneous creases are not formed, until the bag is reduced to its minimum or collapsed stage at which point essentially all the fluid contained therein has been removed. - The effects of an expansion and contraction cycle are illustrated on three different bags. Figure 8 shows a cross-sectional view of a bag with a 1.9gm nominal dry weight latex coating taken along lines 8-8 of Figure 7. Figures 9 and 10 show the same view of a bag with a 5gm nominal dry weight latex coating and no coating respectively. These nominal weights refer to the dry weight of the latex for a nominal 7 fl. oz. container. Smaller and larger containers would have corresponding different weights.
- A comparison of Figures 8 and 10 shows that the bag without a coating was refolded in a haphazard manner so that in its final stage it still contains many voids and the pleats are not discernible. The bag assembly of Figure 8 has been deformed into an ellipse but there are less voids than in Figure 10 and the pleats are readily identifiable. Figure 9 shows that the bag having a 5g latex reforms into a configuration with the least number of voids and its pleats are folded evenly.
- Thus figures 8-10 show the effectiveness of the invention to control the refolding of the bag. In addition the coating has a relatively non-slip surface so that when the coated bag is disposed within the energy tube sufficient frictional forces develop between the bag and the tube to prevent the tube from slipping axially during its expansion and contraction. In previous configurations such slipping was found to be undesirable because if the tube slips axially some portions of it become more expanded than other portions and therefore during contractions the bags were subjected to uneven pressure. Although slippage could also be prevented by roughing the outer surface of the bag, it has been found that such an operation also introduces undue stress in the structure of the bag thereby weakening it.
- Tests have shown that a dispenser built in accordance with this invention functioned properly after being stored on a shelf for a year with a pressurized fluid. Bags constructed in accordance with this invention also i functioned properly after being subjected to a temperature of 120°F for 90 days. These tests conform to the standards functioned properly after being subjected to a temperature of 120°F for 90 days. These tests conform to the standards accepted by the industry.
- It is clear that various modification could be performed on the invention without departing from its scope as defined in the appended claims.
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66158384A | 1984-10-17 | 1984-10-17 | |
US661583 | 1996-06-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0178573A2 true EP0178573A2 (en) | 1986-04-23 |
EP0178573A3 EP0178573A3 (en) | 1988-05-11 |
EP0178573B1 EP0178573B1 (en) | 1992-03-18 |
Family
ID=24654213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19850112729 Expired - Lifetime EP0178573B1 (en) | 1984-10-17 | 1985-10-08 | A pressure fluid dispenser and method of making the same |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0178573B1 (en) |
JP (1) | JPS61118163A (en) |
AU (1) | AU586646B2 (en) |
BR (1) | BR8505152A (en) |
CA (1) | CA1304726C (en) |
DE (1) | DE3585658D1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2203496A (en) * | 1987-02-25 | 1988-10-19 | Richard Friedrich | Filling a container |
US4949871A (en) * | 1989-02-09 | 1990-08-21 | Aerosol Systems, Inc. | Barrier pack product dispensing cans |
US5111971A (en) * | 1989-05-26 | 1992-05-12 | Robert Winer | Self-pressurized container having a convoluted liner and an elastomeric sleeve |
US5143260A (en) * | 1990-06-05 | 1992-09-01 | Nozone Dispenser Systems, Inc. | Aerosol adapter clamp and power system |
US5232126A (en) * | 1989-05-26 | 1993-08-03 | Robert Winer | Liner for dispensing container |
CN102196890A (en) * | 2008-10-23 | 2011-09-21 | 宝洁公司 | Material dispensing system and method for making same |
US9409698B2 (en) | 2011-03-02 | 2016-08-09 | Greenspense Ltd. | Propellant-free pressurized material dispenser |
US9758641B2 (en) | 2011-07-11 | 2017-09-12 | T.G.L. S.P. Industries Ltd. | Nanoclay hybrids and elastomeric composites containing same |
US10913836B2 (en) | 2013-01-16 | 2021-02-09 | Greenspense Ltd. | Elastomeric composites exhibiting high and long-lasting mechanical strength and elasticity and devices containing same |
US10934076B2 (en) | 2013-01-16 | 2021-03-02 | Greenspense Ltd. | Propellant-free pressurized material dispenser |
RU2761004C1 (en) * | 2018-08-29 | 2021-12-02 | Вэй-лунь ХУАН | Pumping device operating on the principle of creating a vacuum |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6450814A (en) * | 1987-08-19 | 1989-02-27 | Tadao Shiraishi | Spray-type bathing agent |
JPH05904A (en) * | 1990-11-28 | 1993-01-08 | Fumakilla Ltd | Foam-like herbicide formulation and method for applying the same preparation |
EP1984279B1 (en) * | 2006-02-14 | 2009-11-11 | Power Container Corp. | Fluid delivery device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767078A (en) * | 1970-11-03 | 1973-10-23 | N Gortz | Bladder type dispenser |
US4387833A (en) * | 1980-12-16 | 1983-06-14 | Container Industries, Inc. | Apparatus for containing and dispensing fluids under pressure and method of producing same |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4423829A (en) * | 1980-08-28 | 1984-01-03 | Container Industries Inc. | Apparatus for containing and dispensing fluids under pressure and method of manufacturing same |
-
1985
- 1985-06-25 CA CA000485163A patent/CA1304726C/en not_active Expired - Lifetime
- 1985-10-08 EP EP19850112729 patent/EP0178573B1/en not_active Expired - Lifetime
- 1985-10-08 DE DE8585112729T patent/DE3585658D1/en not_active Expired - Lifetime
- 1985-10-14 AU AU48742/85A patent/AU586646B2/en not_active Ceased
- 1985-10-16 BR BR8505152A patent/BR8505152A/en not_active IP Right Cessation
- 1985-10-17 JP JP23003385A patent/JPS61118163A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767078A (en) * | 1970-11-03 | 1973-10-23 | N Gortz | Bladder type dispenser |
US4387833A (en) * | 1980-12-16 | 1983-06-14 | Container Industries, Inc. | Apparatus for containing and dispensing fluids under pressure and method of producing same |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2203496A (en) * | 1987-02-25 | 1988-10-19 | Richard Friedrich | Filling a container |
US4913197A (en) * | 1987-02-25 | 1990-04-03 | Hafesto Ag | Device and process for preparing and dispensing spontaneously foaming materials for filling a container |
GB2203496B (en) * | 1987-02-25 | 1991-03-13 | Richard Friedrich | Process for filling a container, a device for this purpose and a method for its operation. |
US4949871A (en) * | 1989-02-09 | 1990-08-21 | Aerosol Systems, Inc. | Barrier pack product dispensing cans |
US5111971A (en) * | 1989-05-26 | 1992-05-12 | Robert Winer | Self-pressurized container having a convoluted liner and an elastomeric sleeve |
US5232126A (en) * | 1989-05-26 | 1993-08-03 | Robert Winer | Liner for dispensing container |
US5143260A (en) * | 1990-06-05 | 1992-09-01 | Nozone Dispenser Systems, Inc. | Aerosol adapter clamp and power system |
GB2278823A (en) * | 1992-02-03 | 1994-12-14 | Akron Polymer Container Corp | Liner for dispensing container |
WO1993014987A1 (en) * | 1992-02-03 | 1993-08-05 | Akron Polymer Container Corporation | Liner for dispensing container |
CN102196890A (en) * | 2008-10-23 | 2011-09-21 | 宝洁公司 | Material dispensing system and method for making same |
CN102196890B (en) * | 2008-10-23 | 2015-05-06 | 宝洁公司 | Method for making material dispensing system |
EP2361175B1 (en) * | 2008-10-23 | 2016-11-30 | The Procter & Gamble Company | Method of making a material dispensing system |
US9409698B2 (en) | 2011-03-02 | 2016-08-09 | Greenspense Ltd. | Propellant-free pressurized material dispenser |
US10683159B2 (en) | 2011-03-02 | 2020-06-16 | Greenspense Ltd. | Propellant-free pressurized material dispenser |
US9758641B2 (en) | 2011-07-11 | 2017-09-12 | T.G.L. S.P. Industries Ltd. | Nanoclay hybrids and elastomeric composites containing same |
US10519297B2 (en) | 2011-07-11 | 2019-12-31 | T.G.L. S.P. Industries Ltd. | Nanoclay hybrids and elastomeric composites containing same |
US10913836B2 (en) | 2013-01-16 | 2021-02-09 | Greenspense Ltd. | Elastomeric composites exhibiting high and long-lasting mechanical strength and elasticity and devices containing same |
US10934076B2 (en) | 2013-01-16 | 2021-03-02 | Greenspense Ltd. | Propellant-free pressurized material dispenser |
RU2761004C1 (en) * | 2018-08-29 | 2021-12-02 | Вэй-лунь ХУАН | Pumping device operating on the principle of creating a vacuum |
Also Published As
Publication number | Publication date |
---|---|
JPS61118163A (en) | 1986-06-05 |
BR8505152A (en) | 1986-09-09 |
EP0178573B1 (en) | 1992-03-18 |
AU586646B2 (en) | 1989-07-20 |
DE3585658D1 (en) | 1992-04-23 |
AU4874285A (en) | 1986-05-01 |
CA1304726C (en) | 1992-07-07 |
EP0178573A3 (en) | 1988-05-11 |
JPH047264B2 (en) | 1992-02-10 |
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