Whisper quiet electromagnetic fluid pump

Details Whisper quiet electromagnetic fluid pump Whisper quiet electromagnetic fluid pump

1990-04-10

1991-12-17

Michalsky, Gerald A.

Pumps

Motor driven

Electric or magnetic motor

335257, F04B 1704

Patent

active

050730959

ABSTRACT:
An electromagnetic reciprocating piston fluid pump having a housing defining a piston guide, an inlet port, and an outlet port, and a piston disposed in the piston guide. A blocking oscillator periodically energizes a solenoid coil to reciprocate the piston in the piston guide and valves provide for unidirectional fluid flow through the pump. A soft rubber bumper and a semi-rigid plastic washer are disposed at the output end of the piston guide to noiselessly terminate the displacement of the piston at the end of its pumping stroke.

REFERENCES:
patent: 3381616 (1968-05-01), Wertheimer et al.
patent: 3556684 (1971-01-01), Rouquette
patent: 4079436 (1978-03-01), Brown
patent: 4306843 (1981-12-01), Arai
patent: 4725208 (1988-02-01), Brown
patent: 4832583 (1989-05-01), Brown

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