EP0639149B1 - Abgabevorrichtung mit einem druckerzeuger - Google Patents

Abgabevorrichtung mit einem druckerzeuger Download PDF

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Publication number
EP0639149B1
EP0639149B1 EP92911353A EP92911353A EP0639149B1 EP 0639149 B1 EP0639149 B1 EP 0639149B1 EP 92911353 A EP92911353 A EP 92911353A EP 92911353 A EP92911353 A EP 92911353A EP 0639149 B1 EP0639149 B1 EP 0639149B1
Authority
EP
European Patent Office
Prior art keywords
chamber
container
pressure
vessel
piston
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.)
Expired - Lifetime
Application number
EP92911353A
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English (en)
French (fr)
Other versions
EP0639149A1 (de
EP0639149A4 (de
Inventor
Rudiger Josef Charles Cruysberghs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iprs Usa
Original Assignee
Iprs Usa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to MX9302394A priority Critical patent/MX9302394A/es
Priority to PCT/US1992/003583 priority patent/WO1993022222A1/en
Application filed by Iprs Usa filed Critical Iprs Usa
Priority to DE1992630866 priority patent/DE69230866T2/de
Priority to AT92911353T priority patent/ATE191201T1/de
Priority to AU19277/92A priority patent/AU1927792A/en
Priority to BR9207124A priority patent/BR9207124A/pt
Priority claimed from BR9207124A external-priority patent/BR9207124A/pt
Priority to JP4511470A priority patent/JPH07508954A/ja
Priority to US07/876,661 priority patent/US5368207A/en
Priority to CA 2134663 priority patent/CA2134663C/en
Priority to EP19990105909 priority patent/EP0945369A1/de
Priority to EP92911353A priority patent/EP0639149B1/de
Priority to ZA937962A priority patent/ZA937962B/xx
Priority to FI945064A priority patent/FI945064A/fi
Priority to OA60576A priority patent/OA09996A/en
Priority to NO944115A priority patent/NO944115L/no
Priority to US08/344,137 priority patent/US5562235A/en
Publication of EP0639149A1 publication Critical patent/EP0639149A1/de
Publication of EP0639149A4 publication Critical patent/EP0639149A4/de
Priority to AU41014/97A priority patent/AU4101497A/en
Publication of EP0639149B1 publication Critical patent/EP0639149B1/de
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • the present invention relates to a pressure generator and, more particularly to a dispensing apparatus utilizing such a pressure generator for dispensing product from sealed containers.
  • Aerosol pressurized dispensers have become familiar, if not essential, products in both consumer and industrial use due to the efficient way in which they discharge a myriad of products.
  • a common example is the hair spray dispenser in which, inside the dispenser, the product spray is dispersed in and surrounded by a liquefied propellant gas under pressure forming a uniform, single phase measure of the product spray and the liquefied propellant. As the product release valve is pressed, the liquefied propellant immediately vaporizes forcing the product spray out of the dispenser in the form of a fine mist.
  • a second type of aerosol dispenser discharges the product, not as a fine mist, but as a solid.
  • the propellant exists within the dispenser as a gas and does not mix with the product. Rather, it forms a separate layer over the product to be discharged. As the product release valve is pressed, the propellant, being under pressure, pushes the product out of the dispenser.
  • CFC's chlorinated fluorohydrocarbons
  • Freon chlorinated fluorohydrocarbons
  • CFC's add to the destruction of the earth's protective ozone layer which has lead the world community to seek a complete ban of CFC usage.
  • Many countries have already banned its use or have implemented programs and schedules designed to eliminate CFC usage in the near future.
  • Butane on the other hand, is extremely flammable, making storage, handling and use of butane charged containers very hazardous. In addition, butane contaminates the flavor and smell of the dispensed product, thereby further restricting its use.
  • nitrogen is available as a substitute propellant, its vapor pressure is such that as product is dispensed, the propellant pressure decreases. Therefore, the product cannot be dispensed at a constant pressure through the life of the product, and at some point, the propellant pressure will fall below that needed to propel any product from the dispenser. To enable all of the product to be dispensable, the nitrogen must be pressurized to dangerously high levels increasing the risk of rupture or requiring more costly dispenser construction.
  • Canadian Patent Application CA-A-2013636 discloses an apparatus according to the pre-characterising part of claim 1. However, in such apparatus the piston member is not physically retained axially in the cylinder member.
  • the reference numeral 10 refers in general to a container, or can, containing a product 12 and a pressurized headspace 14.
  • the container 10 is formed by a cylindrical wall closed at its lower end by a bottom plate 18 and at its upper end by a cap 20. It is understood that the container 10 can be an aerosol can, a vat, a beer or beverage keg, a storage vessel, a bottle or any other type of container used for the storage and dispersement of a product and can have any desired shape or configuration.
  • the cap 20 has a raised central portion 20a which receives a valve 22.
  • a hollow actuating stem 24 extends from the valve 22 and through an opening formed through the raised cap portion 20a and receives a hollow push button 26.
  • a tube 28 is disposed in the container 10 in a coaxial relationship therewith. The lower end of the tube 28 is slightly spaced from the bottom plate 18 and the upper end extends into the valve 22.
  • the valve 22 is normally closed but when the push button 26 is manually pushed downwardly, the valve opens to connect the tube 28 with the stem 24. This permits the product 12 in the container 10 to flow through the tube 28, the valve 22, the stem 24 and to the push button 26 from which it discharges outwardly through discharge openings in the push/button, as will be explained. Since these components are conventional they will not be described in any further detail.
  • a pressure generator for pressurizing the headspace 14 is disposed in the container 10, and is referred to in general by the reference numeral 30.
  • the pressure generator 30 is formed by a vessel 32 having a closed lower end portion and an upper end which narrows to form a shoulder 32a and a neck 32b which defines an opening 32c.
  • the neck 32b is adapted to receive a plug 34 having a continuous bore 34a extending therethrough.
  • the neck 32b is pliable and the diameter of the plug 34 slightly larger than the opening 32c, such that the plug 34 press fits into the bore 34a, slightly deforming the neck 32b.
  • a cylinder 36 is disposed in the vessel 32 and has a closed lower end and an open upper end. The upper end is integrally connected to the shoulder 32a of the vessel 32 by welding or the like. The diameter and the length of the cylinder 36 are less than the diameter and length, respectively, of the vessel 32 to define a high pressure chamber 38.
  • An opening 36a is provided through the wall of the cylinder 36 and a notch, or groove, 36b is formed in the inner surface of the cylinder 36 and extends above the opening 36a, for reasons to be described.
  • a piston 40 operates within the cylinder 36, the outer diameter of the piston 40 being slightly less than the inner diameter of the cylinder 36 to permit reciprocal movement of the piston 40 in the cylinder 36 and to define a flow passage therebetween.
  • Two axially spaced annular grooves are provided near the respective ends of the piston 40 and receive two sealing members, preferably in the form of O-rings, 42 and 44.
  • the cross-sectional area of the O-ring 42 is less than that of the corresponding cross-sectional area of the notch 36b, for reasons to be described.
  • a pre-pressure chamber 46 is defined between the respective lower ends of the piston 40 and the cylinder 36 which is pressurized to urge the piston 40 upwardly, as will be described.
  • a spring 48 extends in the chamber 46 which also urges the piston 40 upwardly. In the position shown in FIG. 2A, the piston 40 is in its upper position in which its upper end engages the plug 34, thereby preventing any further upward movement of the piston 40.
  • the chambers 38 and 46 of the vessel 32 are charged to respective predetermined pressures with a quantity of inert gas such as air, nitrogen, nitrous oxide, carbon dioxide or the like.
  • the chamber 46 is charged to a pressure that is approximately equal to the pressure found in the headspace 14 needed to propel the product 12 from the container 10.
  • the chamber 38 is pressurized to a greater pressure than the chamber 46 to recharge the headspace 14 as is described below.
  • the piston 40 is moved downwardly such that the upper O-ring 42 is below the opening 36a of the cylinder 36. Then, pressurized gas is introduced from the opening 32c of the vessel 32 through the bore 34a of the plug 34, which gas passes through the opening 36a of the cylinder 36 and into the chamber 38. Once the pressure in the chamber 38 reaches a predetermined level, the plug 34 is removed and the piston 40 is raised such that the lower O-ring 44 is above the opening 36a of the cylinder 36 to allow the gas to pass through the opening 36a and fill the chamber 46. The piston 40 is then lowered to the position shown in FIG. 2A such that the lower O-ring 44 is below the opening 36a to seal the gas in the chamber 46. The piston 40 is prevented from ejecting from the cylinder 36 by the reinsertion of the plug 34, or as shown in FIG. 2B by the neck 32b of the vessel 32 which is folded down to partially block the opening 32c.
  • the piston 40 is further lowered such that the upper O-ring 42 is below the opening 36a of the cylinder 36. Additional pressurized gas is then introduced from the opening 32c through the bore 34a, which additional gas passes through the opening 36a of the cylinder 36 and into the chamber 38.
  • the pressure generator 30 is placed in the container 10 which contains the product 12 to be dispensed, and the headspace 14 in the container 10 is charged to a predetermined pressure with a gas similar to the gas used to charge the chambers 38 and 46 of the vessel 32, which pressure is selected to be initially greater than the combined force exerted on the piston 40 by the gas and the spring 48 in the chamber 46.
  • the pressure in the container 10 acts through the opening 32c of the vessel 32 via the bore 34a of the plug 34 on the upper end of the piston 40 to force it downwardly to the operating position shown in FIG. 2B. In this operating position, both O-rings 42 and 44 engage the inner wall of the cylinder 36 to prevent any flow of the pressurized gas through the cylinder 36, and the upper O-ring 42 extends between the opening 36a and the notch 36b.
  • the piston 40 remains in the position shown in FIG. 2B until the container 10 is used by manually pressing the push button 26, in which case the pressure in the headspace 14 of the container 10 propels the product 12 through the tube 28, the valve 22, the stem 24 and outwardly through the openings in the push button 26.
  • This causes the pressure in the container 10 to decrease until the pressures exerted on the lower end of the piston 40 by the pressurized gas in the chamber 46 and the spring 48 (if present) are greater than the corresponding pressure acting on the upper end of the piston 40 by the pressurized product 12 in the container 10.
  • the piston 40 moves upwardly until the upper O-ring 42 extends in the notch 36b of the cylinder 36. This permits the high pressure gas in the chamber 38 to pass through the opening 36a, through the space between the outer surface of the piston 40 and the inner surface of the cylinder 36, through the notch 36b and outwardly through the upper opening 32c of the vessel 32.
  • the pressure in the container 10 is thus increased accordingly until the pressure exerted thereby on the upper end of the piston 40 is sufficient to overcome the pressure exerted on the lower end of the piston 40 by the spring 48 and the pressure in the chamber 46. At this point, the piston 40 will move back to the position shown in FIG. 2B thus blocking any further flow of high pressure gas from the chamber 38 into the container 10 as described above. Note however, that should the pressure in the container 10 quickly drop a significant amount, such as due to a leak, the pressure in the chamber 46 will force the piston 40 against the plug 34 (or the folded down neck 32c), thereby sealing the high pressure gas in the chamber 38 by the upper O-ring 42.
  • an alternative piston 40' may be disposed in the cylinder 36.
  • the piston 40' is shown in FIG. 3 and has two axially spaced annular grooves provided near its ends for receiving the O-rings 42 and 44.
  • Upper and lower wells 50 and 52 having annular flanges 50a and 52a are provided in the upper and lower ends of the piston 40', respectively, for receiving a tool (not shown), such as a spheric pen, to axially position the piston 40' during charging of the chambers 38 and 46.
  • a tool not shown
  • the operation of the piston 40' is identical to that of FIGS. 2A and 2B.
  • the reference numeral 92 refers in general to a container for containing and dispensing a product.
  • the container 92 is formed by a cylindrical wall 94 closed at its lower end by a bottom plate 96 and at its upper end by a cap 98. It is understood that the container 92 can be an aerosol can, a vat, a beer or beverage keg, a storage vessel, a bottle or any other type of container used for the storage and dispersement of a product and can have any desired shape or configuration.
  • a pipe 100 registers with and extends from an opening 98a in the cap 98.
  • the pipe 100 branches into two branches 100a and 100b for passing product from the container 92 to two dispensing containers 102 and 104, respectively.
  • a pressure generator for pressurizing the container 92 is referred to in general by the reference numeral 106.
  • the pressure generator 106 is formed by a cylindrical vessel 108 having a closed upper end and a lower end having a neck 108a which defines an opening 108b.
  • the neck 108a is adapted to receive a cannulated plug (not shown) similar to the plug 34 previously described.
  • the neck 108a is pliable and can be folded down to partially block the opening 108b, as is shown in FIG. 4.
  • the outer diameter of the vessel 108 is slightly less than the inner diameter of the container 92 to permit reciprocal movement of the vessel 108 in the container 92.
  • Two axially spaced annular grooves are provided near the respective ends of the vessel 108 and receive two sealing members, preferably in the form of O-rings, 110 and 112.
  • a gas chamber 114 is defined between the lower end of the vessel 108 and the bottom plate 96 of the container 92 and a further chamber 113 for containing product is defined above the vessel 108.
  • the chamber 114 is pressurized through an opening 96a in the bottom plate 96 which is sealed with a rubber valve 116.
  • a cylinder 118 is disposed in the vessel 108 and has a closed upper end and an open lower end. The lower end is integrally connected to the lower end of the vessel 108 in alignment with the opening 108b by welding or the like. The diameter and the length of the cylinder 118 are less than the diameter and length, respectively, of the vessel 108 to define a high pressure chamber 120.
  • a piston 122 operates within the cylinder 118 and defines a pre-pressure chamber 124.
  • the cylinder 118 and the piston 122 are identical to the cylinder 36 and the piston 40 of FIGS. 2A and 2B, and thus will not be described in further detail.
  • the spring 48 has not been shown for the convenience of presentation.
  • the chambers 120 and 124 of the vessel 108 are charged to respective predetermined pressures with a quantity of inert gas such as air, nitrogen, nitrous oxide, carbon dioxide or the like.
  • the chamber 124 is charged to a pressure that is equal to the pressure needed in the containers 102 and 104 to propel product from the containers 102 and 104 at a predetermined flow rate.
  • the chamber 120 is pressurized to a greater pressure than the chamber 124 to recharge the pressure in the chamber 114 as will be described. Since the methods of charging the chambers 120 and 124 are identical to the methods of charging the chambers 38 and 46 of FIGS 2A and 2B, they will not be discussed here in detail.
  • the pressure generator 106 is placed in the container 92 in the orientation shown in FIG. 4.
  • the chamber 113 is then filled with product, and the chamber 114 charged via the valve 116 to a predetermined pressure with a gas similar to the gas used to charge the chambers 120 and 124.
  • the pressure in the chamber 114 is selected to be initially greater than force exerted on the piston 122 by the gas in the chamber 124 and any spring present therein.
  • the pressure in the chamber 114 thus acts through the opening 108b of the vessel 108 on the lower end of the piston 122 to force it upwardly to its operating position as previously described in connection with FIGS. 2A and 2B.
  • the pressure in the chamber 114 is thus increased, which accordingly urges the vessel 108 to rise further within the container 92 which accordingly increases the pressure in the containers 92, 102 and 104.
  • the release of the pressurized gas from the chamber 120 continues until the pressure in the containers 92, 102 and 104 and in the chamber 114 is equal to the pressure in the chamber 124. At this time, the piston 122 will move back to its blocking position.
  • the dispensing apparatus of the present invention provides several advantages, not the least significant of which is that it provides a dispenser capable of dispensing a product at a substantially constant pressure throughout the life of the product without having to use an environmentally hazardous propellant, the intended propellants being air, nitrogen, nitrous oxide, carbon dioxide and the like.
  • a dispensing apparatus is disclosed which does not discharge any propellant into the atmosphere.
  • the present invention also enables a precise, constant pressure to be simultaneously maintained in numerous discharge vessels by the utilization of a single pressure generator in a common storage container, as is described in connection with FIG. 4.
  • the pressure generator of the present embodiment is also easily assembled due to the few components required and the simplicity of those components. Further, the pressure generator requires no manual actuation before or during use.
  • the pressure in the pre-pressure chamber 124 can be provided by high pressure gas alone, by a spring 48 alone, or by the combination of both.
  • the components of the pressure generator of the present embodiment have been primarily described and shown in the drawings as being metal.
  • these components can be metal (preferably aluminium), plastic (preferably polyoxymethalene or polyethelene terephthalate), or any other like material.
  • the O-rings 42, 44, 110 and 112 can be replaced with other types of movable seals such as quadring, rings, scrapers and the like, which can either be separate from the other components or jointly molded thereon.
  • a piston formed of plastic may have annular ridges formed thereon to provide the needed sealing and reciprocal movement within the cylinder.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Claims (6)

  1. Gerät um einen wesentlich unveränderlichen voreingestellten Druck in einem Druckcontainer (92) einzuhalten, um Produkte, gelagert im Container am wesentlich unveränderlichen Druck zu verteilen, und wobei das Gerät zusammengesetzt ist aus :
    ein Container (92),
    ein Behälter (108) der Druckgas enthält und im Container (92) gestellt wurde, und
    Vorrichtung verantwortlich für eine Erniedrigung des Gasdrucks im Container (92) um den Fluß des Druckgases im Behälter (108) zu erlauben zwischen den Behälter zum Container um den wesentlich unveränderlichen Druck im Container zu behalten, und diese Vorrichtung umfaßt :
    ein Zylinder (118), abgestellt im Behälter (108) und der mit dem Behälter eine erste Kammer (120) für die Lagerung des Druckgases bestimmt,
    ein Kolbenglied (122), abgestellt im Zylinderglied (118) und der mit dem Zylinderglied eine zweite Kammer (124) bestimmt, wobei ein der Kolben- und Zylinderglieder am Druck im Container (92) ausgesetzt wird um zum ersten Stand bezüglich des andern Glieds zu bewegen, zum Stand in dem der Druck im Container dem voreingestellten Druck ähnlich ist.
    Vorrichtung (48), einschließlich eines Druckgases in der zweiten Kammer (124) um das eine Glied im Vergleich zum zweiten Glied zum zweiten Stand zu bringen, um den Druck im Container (92) unter dem voreingestellten Druck zu erniedrigen, und
    Verbindungsvorrichtungen (36a, 36b, 42) die reagerieren mit dem ersten Glied, das zum zweiten Stand bewegt um die erste Kammer (120) mit dem Container (92) zu verbinden, damit das Druckgas von der ersten Kammer (120) zum Container laufen könnte, und wobei die Verbindungsvorrichtungen reagieren auf das zum ersten Stand für die Abschließung der ersten Kammer (120) bewegende Glied, damit der Fluß des Druckgases vorgebeugt wird, und wobei im Container ein wesentlicher unveränderlicher voreingestellter Druck einbehalten wird.
    In diesem Container (92) wird Behälter (108) abgestellt, damit der Container in einer dritten Kammer (113) verteilt wird für die Lagerung des Produkts und in einer vierten Kammer (114) um Gas in einem voreingestellten Druck zu lageren, wobei der Behälter (108) im Container bewegt zufolge einer Erniedrigung des Drucks in der dritten Kammer (113) durch den Austrieb des Produkts, derweise, daß das Volumen der dritten Kammer abnimmt und das Volumen der vierten Kammer erhöht, wobei diese Bewegung den Druck des Gases in der vierten Kam mer (114) verringert, und
    wobei die Verbindungsvorrichtung (36a, 36b, 42) dem Druckgas im Behälter (108) erlaubt vom Behälter nur zur vierten Kammer (114) zu fließen um in der vierten Kammer den voreingestellten Druck zu behalten,
    gekennzeichnet durch :
    Halsvorrichtungen (108a) ragen von einem Endteil des Zylinderglieds (108) hinaus, wobei derartige Halsvorrichtung das Kolbenglied erlaubt beim Anfang aus dem Zylinderglied vorzuspringen damit die zweite Kammer (124) mit dem Druckgas geladen werden kann, und wobei die Halsvorrichtung (108a) abgeändert wird um nachher dieses Endteils des Zylinders (118) teilweise zu blockieren um die Kolbe (122) axial mit dem Zylinderglied zu halten.
  2. Das Gerät des 1. Antrags in dem das Zylinderglied (118) in Bezug auf dem Behälter (108) gesichert wurde und in dem das Kolbenglied (122) dem Druck im vierten Kammer (114) ausgestellt wird und bezüglich des Zylinderglieds zu den ersten und zweiten Ständen bewegt.
  3. Das Gerät in Antrag 2, in dem ein Schlußend des Kolbenglieds (122) dem Druck in der 4. Kammer (114) ausgesetzt wirdt, und in dem die zweite Kammer (124) festgelegt wird zwischen dem Kolbenglied (118) und dem andern Schlußend des Kolbenglieds.
  4. Das Gerät in Antrag 3, in dem der Antrieb eine Welle (48) umfaßt und/oder Druckgas in die zweiten Kammer (124) freigelassen wird und auf genanntes andern Schlußend des Kolbenglieds (122) wirkt.
  5. Das Gerät irgendwelches vorherigen Antrags, in dem der Außendurchmesser des Kolbenglieds etwas weniger ist als der Innendurchmesser des Zylinderglieds (118) um den Fluß des Druckgases zwischendurch zu ermöglichen, und in dem die Verbindung eine Öffnung (36a) in der Zylinderwand (118), eine Versiegelung (36a) zwischen der Außenseite des Kolbenglieds (122) und einer übereinkommenden Innenseite des Zylinderglieds (118) damit der Druckgasfluß verhindert wird wenn der Kolbenglied sich im ersten Stand befindet, und eine Rille (36b) in einer der Seiten zum Empfang der Versiegelung damit den Fluß des Druckgases ermöglicht wird wenn der Kolbenglied sich im zweiten Stand befindet, umfaßt.
  6. Das Gerät in Antrag 4, in dem die Versiegelung in einer Rille des Kolbenglieds (122) ausläuft und die Innenseite des Zylindergliedes (118) eingreift, und in dem die Rille (36b) in der Innenseite des Zylinderglieds gebildet wird
EP92911353A 1992-04-30 1992-04-30 Abgabevorrichtung mit einem druckerzeuger Expired - Lifetime EP0639149B1 (de)

Priority Applications (17)

Application Number Priority Date Filing Date Title
EP92911353A EP0639149B1 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem druckerzeuger
DE1992630866 DE69230866T2 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem druckerzeuger
AT92911353T ATE191201T1 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem druckerzeuger
AU19277/92A AU1927792A (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
BR9207124A BR9207124A (pt) 1992-04-30 1992-04-30 Gerador de pressão e aparelho de distribuição que utiliza o gerador
CA 2134663 CA2134663C (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
JP4511470A JPH07508954A (ja) 1992-04-30 1992-04-30 圧力発生器及び該圧力発生器を用いた分配装置
US07/876,661 US5368207A (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
PCT/US1992/003583 WO1993022222A1 (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
EP19990105909 EP0945369A1 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem Druckerzeuger
MX9302394A MX9302394A (es) 1992-04-30 1992-04-30 Generador de presion y aparato dispensador que utiliza el mismo.
ZA937962A ZA937962B (en) 1992-04-30 1993-10-26 Pressure generator and dispensing apparatus utilizing same
FI945064A FI945064A (fi) 1992-04-30 1994-10-27 Paineentuottaja sekä sellaista hyödyntävä jakelulaite
OA60576A OA09996A (en) 1992-04-30 1994-10-28 Pressure generator and dispensing apparatus utillizing same
NO944115A NO944115L (no) 1992-04-30 1994-10-28 Trykkgenerator og dispenseringsapparat for bruk av denne
US08/344,137 US5562235A (en) 1992-04-30 1994-11-23 Pressure generator and dispensing apparatus utilizing same
AU41014/97A AU4101497A (en) 1992-04-30 1997-10-15 Pressure generator and dispensing apparatus utilizing same

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
BR9207124A BR9207124A (pt) 1992-04-30 1992-04-30 Gerador de pressão e aparelho de distribuição que utiliza o gerador
PCT/US1992/003583 WO1993022222A1 (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
EP92911353A EP0639149B1 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem druckerzeuger
US07/876,661 US5368207A (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
CA 2134663 CA2134663C (en) 1992-04-30 1992-04-30 Pressure generator and dispensing apparatus utilizing same
ZA937962A ZA937962B (en) 1992-04-30 1993-10-26 Pressure generator and dispensing apparatus utilizing same
OA60576A OA09996A (en) 1992-04-30 1994-10-28 Pressure generator and dispensing apparatus utillizing same
AU41014/97A AU4101497A (en) 1992-04-30 1997-10-15 Pressure generator and dispensing apparatus utilizing same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP19990105909 Division EP0945369A1 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem Druckerzeuger

Publications (3)

Publication Number Publication Date
EP0639149A1 EP0639149A1 (de) 1995-02-22
EP0639149A4 EP0639149A4 (de) 1995-04-12
EP0639149B1 true EP0639149B1 (de) 2000-03-29

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EP92911353A Expired - Lifetime EP0639149B1 (de) 1992-04-30 1992-04-30 Abgabevorrichtung mit einem druckerzeuger

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1009292C1 (nl) 1998-05-29 1999-11-30 Packaging Tech Holding Sa Drukcontrole-inrichting voor het behouden van een constante vooraf bepaalde druk in een container.
US9393336B2 (en) 2011-07-08 2016-07-19 S. C. Johnson & Son, Inc. Insert for dispensing a compressed gas product, system with such an insert, and method of dispensing a compressed gas product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2013636A1 (en) * 1989-04-06 1990-10-06 Sang I. Han Disposable pressure wound irrigation device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2013636A1 (en) * 1989-04-06 1990-10-06 Sang I. Han Disposable pressure wound irrigation device

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EP0639149A1 (de) 1995-02-22
EP0639149A4 (de) 1995-04-12

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