Dispensing pump

Details Dispensing pump Dispensing pump

B - Operations, Transporting

05

B

222/78

B05B 11/00 (2006.01) B65D 47/34 (2006.01)

Patent

CA 1053623

DISPENSING PUMP ABSTRACT OF THE DISCLOSURE 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.

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