Vacuum actuated pressurized fluid dispenser

Details Vacuum actuated pressurized fluid dispenser Vacuum actuated pressurized fluid dispenser

1977-06-06

1979-04-03

Spar, Robert J.

Dispensing

With discharge assistant

Container with follower

222389, 239322, B67D 554

Patent

active

041472829

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.

REFERENCES:
patent: 580052 (1897-04-01), Lindemeyer
patent: 1854458 (1932-04-01), Quincy et al.
patent: 2098408 (1937-11-01), Watson
patent: 3327906 (1967-06-01), Gomann
patent: 3407974 (1968-10-01), Chmielowiec
patent: 3468308 (1969-09-01), Bierman
patent: 3561644 (1971-02-01), Works
patent: 3604417 (1971-09-01), Stolzenberg
patent: 3976223 (1976-08-01), Jass et al.

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