Pump

Details Pump Pump

1974-09-16

1976-02-24

Hoffman, Drayton E.

Dispensing

With discharge assistant

With movable nozzle interconnected therewith

G01F 1102

Patent

active

039400280

ABSTRACT:
A pump for dispensing small metered quantities of a liquid from a container such as a jar or can, the pump including a housing and a plunger, in combination with a valve comprising an annular washer having a rectangular cross-section, assembled between the pump housing and the plunger to provide tight seals throughout a plurality of annular surfaces, in order to prevent leakage in the closed position, and to tilt axially on the pumping stroke to permit escape of the liquid being pumped. Automatically opening container venting means is also provided.

REFERENCES:
patent: 3187960 (1965-06-01), Gorman
patent: 3211346 (1965-10-01), Meshberg
patent: 3228570 (1966-01-01), Steiman
patent: 3257961 (1966-06-01), Schlenker
patent: 3282472 (1966-11-01), Roder
patent: 3463093 (1969-08-01), Pfeiffer et al.
patent: 3531224 (1970-09-01), Clevenger
patent: 3669316 (1972-06-01), Corsette
patent: 3669321 (1972-06-01), Susuki et al.

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