Liquid dispensing pump selectively sealable against leakage

Details Liquid dispensing pump selectively sealable against leakage Liquid dispensing pump selectively sealable against leakage

1975-03-19

1976-04-13

Reeves, Robert B.

Dispensing

With lock or fastening seal

Plural

222321, 222384, 239333, B67D 532

Patent

active

039499065

ABSTRACT:
The disclosed device is a finger operated plunger pump which is mountable in the mouth of a hand-held container for liquid products to provide an unpressurized dispenser package for consumer use. The pump includes the usual pump cylinder, plunger, discharge nozzle, check valves and cap for mounting the pump on the container, and is characterized by provision of a lockable seal for the discharge passage, the seal being selectively operable by the user to disable the pump and simultaneously seal it against leakage. The disablement of the pump is effected by limited rotation of one seal member relative to its complementary member to shift them between seated and unseated positions, such rotation being effected by turning the pump plunger relative to its cylinder through a connection including a telescoping stem which accommodates normal plunger reciprocation.

REFERENCES:
patent: 3239151 (1966-03-01), Jokelson
patent: 3362344 (1968-01-01), Duda
patent: 3531224 (1970-09-01), Clevenger et al.
patent: 3627206 (1971-12-01), Boris

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