Pressure regulating device for a pressurized dispensing vessel

Details Pressure regulating device for a pressurized dispensing vessel Pressure regulating device for a pressurized dispensing vessel

2006-04-04

2006-04-04

Scherbel, David A. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

C222S396000, C222S129100, C222S135000, C222S399000, C239S031000, C239S320000, C137S509000

Reexamination Certificate

active

07021559

ABSTRACT:
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.

REFERENCES:
patent: 5110012 (1992-05-01), Scholle et al.
patent: 5285931 (1994-02-01), Alfons
patent: 5439137 (1995-08-01), Grollier et al.
patent: 6412688 (2002-07-01), Tucker et al.
patent: 0 133 770 (1985-03-01), None
patent: 0 222 319 (1987-05-01), None
patent: WO 90/04129 (1990-04-01), None
patent: WO 99/44890 (1999-09-01), None
International Patent Application No. WO 99/44890, Didenkowski, Pressure Regualating Device for Pressurized Can, Sep. 10, 1999, all.

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