Pressure regulating device for a pressurized dispensing vessel
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A62C-013/62
A62C-013/00
A62C-013/66
A62C-035/58
출원번호
US-0451084
(2003-01-30)
우선권정보
AU-PS0237(2002-01-31)
국제출원번호
PCT/AU03/000092
(2003-01-30)
§371/§102 date
20030619
(20030619)
국제공개번호
WO03/064286
(2003-08-07)
발명자
/ 주소
Fraser Easton,Gilbert
출원인 / 주소
Primepak PTY LTD
대리인 / 주소
Stites &
인용정보
피인용 횟수 :
4인용 특허 :
4
초록▼
A pressure regulating device for regulating pressure in a pressurized dispensing vessel, the device comprising a cartridge for storing pressurized fluid; the cartridge being sealed by a cap assembly having an expandable chamber and a flow passage for communicating fluid from the cartridge to the int
A pressure regulating device for regulating pressure in a pressurized dispensing vessel, the device comprising a cartridge for storing pressurized fluid; the cartridge being sealed by a cap assembly having an expandable chamber and a flow passage for communicating fluid from the cartridge to the interior of the dispensing vessel; a closure member in the cap assembly to open and close the flow passage and an actuation means in the cap assembly to actuate the closure member, wherein the actuation means operates in response to expansion of the expandable chamber; and a one-way valve communicating the expandable chamber with the interior of the dispensing vessel via an aperture in the cap assembly, the valve having a resilient chamber seal in the expandable chamber extending across the aperture and restrained by chamber wall so to allow fluid to enter through the aperture and past the seal to charge the chamber to a predetermined pressure difference below the pressure in the dispensing vessel, and wherein expansion of the chamber occurs when the pressure in the dispensing vessel is lower than the pressure in the chamber.
대표청구항▼
The invention claimed is: 1. A pressure regulating device for regulating pressure in a pressurized dispensing vessel, the device comprising: a cartridge for storing pressurized fluid; the cartridge being sealed by a cap assembly having an expandable chamber and a flow passage for communicating flui
The invention claimed is: 1. A pressure regulating device for regulating pressure in a pressurized dispensing vessel, the device comprising: a cartridge for storing pressurized fluid; the cartridge being sealed by a cap assembly having an expandable chamber and a flow passage for communicating fluid from the cartridge to the interior of the dispensing vessel; a closure member in the cap assembly to open and close the flow passage and an actuation means in the cap assembly to actuate the closure member, wherein the actuation means operates in response to expansion of the expandable chamber; and a one-way valve communicating the expandable chamber with the interior of the dispensing vessel via an aperture in the cap assembly, the valve having a resilient chamber seal in the expandable chamber extending across the aperture, the chamber seal being of annular shape with a peripheral lip supported by an annular rib giving the seal a cup like form, wherein the peripheral lip and annular rib bear against a wall of the chamber so that the seal is restrained by a chamber wall so to allow fluid to enter through the aperture and past the seal to charge the chamber to a predetermined pressure difference below the pressure in the dispensing vessel, and wherein expansion of the chamber occurs when the pressure in the dispensing vessel is lower than the pressure in the chamber. 2. The pressure regulating device according to claim 1, wherein the seal extends across the expandable chamber. 3. The pressure regulating device according to claim 1, wherein the predetermined pressure difference is dependent on the resilient chamber seal which is made to resist a pressure of approximately 1 to 10 psi and typically 2 to 5 psi, such that the seal will deform and allow fluid to enter through the aperture and into the chamber when the pressure in the dispensing vessel is greater than the chamber pressure by an amount equal to or greater than the pressure resistance for the chamber seal. 4. The pressure regulating device according to claim 1, wherein the pressurized fluid stored in the cartridge is gas. 5. The pressure regulating device according to claim 4, wherein the gas is nitrogen or carbon dioxide. 6. The pressure regulating device according to claim 1, wherein the cap assembly includes a cap cover having the aperture and supporting the chamber seal. 7. The pressure regulating device according to claim 6, wherein the cap cover is attached to a neck plug to which the cartridge is crimped. 8. The pressure regulating device according to claim 7, wherein the neck plug includes a neck passage to allow pressurized fluid in the cartridge to flow into the cap cover and out the interior of the vessel. 9. The pressure regulating device according to claim 8, wherein the closure member is a valve which is biased to seat against the neck passage and is moveable therein to open and close the passage. 10. The pressure regulating device according to claim 9, wherein the actuation means is attached to the valve and comprises a resilient diaphragm extending across and in sealed contact with the interior of the cap cover. 11. The pressure regulating device according to claim 10, wherein the diaphragm forms an expandable wall of the expandable chamber and moves the valve into an open position in response to an expansion of the expandable chamber. 12. The pressure regulating device according to claim 11, wherein the valve has a stem that engages the diaphragm at one end with a head at the other that engages a seat defined by the neck passage, and biasing means urging the head to seat against the neck passage. 13. The pressure regulating device according to claim 12, wherein the biasing means is a return spring. 14. A method of assembling a pressure regulating device for insertion into a dispensing vessel for regulating pressure in the dispensing vessel when pressurized, the method including the steps of: assembling a cartridge with a sealing means to seal the cartridge interior, wherein the sealing means contains a closure member; with the closure member in an open position, pressurizing the cartridge with a fluid and closing the closure member to seal the cartridge interior when pressurized; locating a resilient chamber seal inside a cap; assembling an actuation means between the cap and the sealed cartridge, the actuation means actuating the closure member, and attaching the cap to the sealed cartridge wherein an expandable chamber is formed between the chamber seal and the actuation means, wherein the chamber seal is restrained by chamber walls and extends across an aperture in the cap to form a one-way valve into the expandable chamber, the actuation means being actuated by expansion of the expandable chamber; and while assembling the cap and actuation means, bleeding fluid from the expandable chamber to atmosphere. 15. The method according to claim 14, wherein the fluid in the expandable chamber is bled to atmospheric pressure by inserting a tube in the cap aperture down past the seal to access the expandable chamber whilst the actuation means compresses the chamber during assembly. 16. A method of installing the pressure regulating device in accordance with claim 1 into a vessel to be pressurized whereby: the device is inserted into an un-pressurized vessel containing product to be dispensed; sealing the vessel by fitting an outlet valve on the vessel; pressurizing the vessel with a gas thereby simultaneously pressurizing the expandable chamber to a predetermined pressure below the vessel pressure, the pressure difference being dependent on the pressure resistance of the resilient seal. 17. The pressure regulating device according to claim 1 wherein the expandable chamber has a neck of round cross section and the seal extends across the neck. 18. A pressure regulating device for regulating pressure in a pressurized dispensing vessel, the device comprising: a cartridge for storing pressurized fluid; the cartridge being sealed by a cap assembly having an expandable chamber and a flow passage for communicating fluid from the cartridge to the interior of the dispensing vessel; a closure member in the cap assembly to open and close the flow passage and an actuation means in the cap assembly to actuate the closure member, wherein the actuation means operates in response to expansion of the expandable chamber; and a one-way valve communicating the expandable chamber with the interior of the dispensing vessel via an aperture in the cap assembly, the valve having a resilient chamber seal in the expandable chamber to seal the aperture from the chamber, the chamber seal being of annular shape with a peripheral lip giving the seal a cup like form, whereby the peripheral lip bears against a wall of the chamber, the seal being restrained by the chamber wall to allow fluid to enter through the aperture and past the seal to charge the chamber to a predetermined pressure difference below the pressure in the dispensing vessel, the resilient chamber seal being made to resist a pressure of approximately 1 to 10 psi and typically 2 to 5 psi, such that the seal will deform and allow fluid to enter through the aperture and into the chamber when the pressure in the dispensing vessel is greater than the chamber pressure by an amount equal to or greater than the pressure resistance for the chamber seal and wherein expansion of the chamber occurs when the pressure in the dispensing vessel is lower than the pressure in the chamber.
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이 특허에 인용된 특허 (4)
Scholle William R. (Corona Del Mar CA) Lloyd-Davies William T. (Irvine CA) Savage Chester (Irvine CA), Beverage container with regulated pressure.
Grollier Jean-Francois (Paris FRX) Bauer Daniel (le Raincy FRX), Method for forming an extemporaneous mixture of at least two liquid or pasty components, and pressurized can for impleme.
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