Title: Vacuum actuated pressurized fluid dispenser

Abstract: A dispenser device which has the contents under pressure so that they can be dispensed by actuating a valve similar to an aerosol unit. The contents are maintained under pressure by using a movable piston element driven by external air pressure against the contents which are contained in an enclosure within an evacuated vessel. The dispenser can be filled and sealed at atmospheric pressure and normal temperature and activated by evacuating the unit.

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Inventors: Levy, Sidney (Oaklyn, NJ, US)

Application Number: 803478
Filing Date: 1977-06-06
Publication_date: 1979-04-03
Assignee:
Primary Class(es): 222/387 222/389, 239/322
Other Classes:
US Patent Ref:

580052	Apr, 1897	Lindemeyer	222/95.
1854458	Apr, 1932	Quincy et al.	222/386.
2098408	Nov, 1937	Watson	222/386.
3327906	Jun, 1967	Gomann	222/389.
3407974	Oct, 1968	Chmielowiec	222/389.
3468308	Sep, 1969	Bierman	222/212.
3561644	Feb, 1971	Works	222/95.
3604417	Sep, 1971	Stolzenberg	222/389.
3976223	Aug, 1976	Jass et al.	222/95.

Other Refs: 2356478

May, 1974	DE

Primary Examiner: Spar, Robert J.
Assistant Examiner: Silverberg, Fred A.
Attorney: Finnegan, Henderson, Farabow & Garrett