Manual actuated dispensing pump

Details Manual actuated dispensing pump Manual actuated dispensing pump

1976-08-31

1977-09-27

Reeves, Robert B.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

222383, 239333, 239350, B05B 1100, B65D 4734

Patent

active

040506134

ABSTRACT:
A dispensing pump of the type in which the discharge valve will open and will remain open only for such time as the pumping pressure is maintained above a predetermined minimum. The pump includes a unitary plunger unit of annular configuration, the inner-periphery of which cooperates with the pump piston to provide the main pump chamber, while its outer periphery cooperates with a socketed plunger head in the manner of a piston, to provide therewith a variable volume pressure accumulation chamber and to function as a pressure actuated discharge valve and shipping seal as well as a vent seal.

REFERENCES:
patent: 3257961 (1966-06-01), Schlenker
patent: 3399836 (1968-09-01), Pechstein
patent: 3921861 (1975-11-01), Kondo
patent: 3949906 (1976-04-01), Pettersen et al.

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