Manual container mounted pump

Details Manual container mounted pump Manual container mounted pump

1976-08-31

1977-09-06

Reeves, Robert B.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

239333, 239350, B05B 1100

Patent

active

040462927

ABSTRACT:
A dispensing pump of the type in which the outlet valve will open and will remain open only when the pumping pressure is maintained above a predetermined minimum. The pump cylinder in which the pump piston reciprocates, constitutes a unitary part of the outlet valve and also communicates freely with expansible, contractable pressure accumulation chamber, defined in part by the outlet valve and in part by the stationary pump housing. The pump piston and the outlet valve of the unit are movable independently of each other, while the stationary outlet or discharge passage for the pump is placed in communication with the pressure accumulation chamber only when the pressure within that chamber is at or above the predetermined minimum above referred to.

REFERENCES:
patent: 3257961 (1966-06-01), Schlenker
patent: 3379381 (1968-04-01), Decaux
patent: 3387789 (1968-06-01), Fedit et al.
patent: 3406909 (1968-10-01), Pfeiffer
patent: 3908870 (1975-09-01), Nozawa et al.

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