Fluid dispenser

Details Fluid dispenser Fluid dispenser

1987-08-07

1990-07-31

Huppert, Michael S.

Dispensing

With discharge assistant

Plural

222285, 222321, B65D 8300

Patent

active

049444301

ABSTRACT:
A vacuum-tight and pressure-tight closed storage space in a container is constructionally combined with a thrust piston pump projecting thereinto and a drag piston slidably guided therein and in the initial position of the thrust piston pump is hermetically sealed by an exhaust valve mechanically closed in forcibly controlled manner. The drag piston is adapted to the thrust piston pump in such a way that the storage space can be emptied substantially free with the thrust piston pump.

REFERENCES:
patent: 1628624 (1927-05-01), Liverance, Jr.
patent: 2299450 (1942-10-01), Anderson
patent: 2556180 (1951-06-01), Hamilton et al.
patent: 3240430 (1966-03-01), Diamond
patent: 4485943 (1984-12-01), Czech

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