Dispensing pump

Details Dispensing pump Dispensing pump

1974-08-12

1976-04-13

Reeves, Robert B.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

B67D 542

Patent

active

039499103

ABSTRACT:
An inexpensive, container mounted, plastic dispenser pump for dispensing a product from the container is leak-proof in its rest position since neither the outlet valve nor the atmospheric container vent open in response to container pressure or positional attitude of the dispenser. The outlet valve is positive in action since it is opened by relative movement of pump parts during actuation. The pump inlet valve is actuated by differential pressure. The atmospheric vent for the container is blocked by the position of pump parts when at rest.

REFERENCES:
patent: 3187960 (1965-06-01), Gorman
patent: 3463093 (1969-08-01), Pfeiffer et al.
patent: 3483888 (1969-12-01), Wurzel

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