Fluid dispensing device

Details Fluid dispensing device Fluid dispensing device

1977-12-19

1980-09-30

Knowles, Allen N.

Dispensing

Resilient wall

Supply container delivering to receiving chamber

222214, 222383, 417479, 417472, B65D 3700

Patent

active

042250617

ABSTRACT:
A manually operated fluid dispensing device includes a first body component formed with a pump chamber and an upwardly opening cavity providing a valve housing that is closed by a second mating body component or cover having a projection that extends into the valve housing. A flat pliable valve element is clamped between said body components, said element being imperforate except for an opening through which said projection extends. A compressible bellows is associated with the pump chamber to form a variable volume pump chamber. The parts are all fabricated of thermoplastic materials and molding resins, the mating body components each being molded as a simple member of rigid plastic and including all passageways, grooves and ring seals required in the device.

REFERENCES:
patent: 3726442 (1973-04-01), Davidson
patent: 3986694 (1976-10-01), Grogan
patent: 3995774 (1976-12-01), Cooprider
patent: 4155487 (1979-05-01), Blake

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