Liquid dispensing pump

Details Liquid dispensing pump Liquid dispensing pump

1983-02-23

1985-01-29

Marmor, Charles A.

Dispensing

With lock or fastening seal

Plural

222321, 222384, B67D 532

Patent

active

044960824

ABSTRACT:
A liquid dispensing pump is capable of being locked in one embodiment in a fully raised position of the plunger, in another embodiment in a fully depressed position of the plunger and in a further embodiment in a fully raised and/or fully depressed position of the plunger relative to the pump body. Each pump has a vent chamber which is closed in the locked position to avoid leakage of product from the container, and which is opened by a depending skirt on the plunger as it moves into juxtaposition to an enlarged diameter section in the vent chamber.

REFERENCES:
patent: 3333549 (1967-08-01), Cooprider
patent: 3827605 (1974-08-01), Knickerbocker
patent: 3827606 (1974-08-01), Knickerbocker
patent: 3908870 (1975-09-01), Nozawa et al.
patent: 4343417 (1982-08-01), Corsette

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