Hand pump for delivering thick or liquid substances contained in

Details Hand pump for delivering thick or liquid substances contained in Hand pump for delivering thick or liquid substances contained in

1988-08-05

1990-02-13

Huppert, Michael S.

Dispensing

With discharge assistant

With material supply container and discharge assistant with...

222340, 222321, B67D 540

Patent

active

048999130

ABSTRACT:
A hand pump for delivering a predetermined quantity of paste or liquid substances contained in a bottle comprises an overall tubular hollow main body for receiving the pump operating members, including the operating stem which projects from one of the two ends of the main body. For retaining the stem within the body, the pump comprises a retention element with a hole through which the stem passes. The retention element is provided with projections or recesses arranged to respectively snap-engage corresponding recesses or projections provided in or on the main body.

REFERENCES:
patent: 3937366 (1976-02-01), Steiman
patent: 4056216 (1977-11-01), Kotuby
patent: 4174055 (1979-11-01), Capra et al.
patent: 4485943 (1984-12-01), Czech
patent: 4522318 (1985-06-01), Del Bon
patent: 4526302 (1985-07-01), Brunet
patent: 4607765 (1986-08-01), Ruscitti

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