Electromagnetic pumps

Details Electromagnetic pumps Electromagnetic pumps

1979-06-08

1981-11-10

Freeh, William L.

Pumps

Motor driven

Electric or magnetic motor

F04B 1704

Patent

active

042995442

ABSTRACT:
In an electromagnetic pump wherein a plunger is reciprocated in a cylinder by an exciting coil energized by interrupted current from an oscillator, an insulating layer is coated on the outer surface of the coil and a space between the coil and a cover is filled with polyurethane foam.

REFERENCES:
patent: 3113523 (1963-12-01), Woodward
patent: 3400663 (1968-09-01), Wertheimer
patent: 3492619 (1970-01-01), Hager
patent: 3979659 (1976-09-01), Lynch
patent: 4042955 (1977-08-01), Imai
patent: 4047852 (1977-09-01), O'Connor
patent: 4080552 (1978-03-01), Brown
patent: 4101950 (1978-07-01), Hager
patent: 4169696 (1979-10-01), Brown

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