Reciprocating fluid pump having a hall switch

Details Reciprocating fluid pump having a hall switch Reciprocating fluid pump having a hall switch

1980-04-11

1982-08-10

Croyle, Carlton R.

Pumps

Motor driven

Electric or magnetic motor

318128, F04B 1704, H02K 3302

Patent

active

043435971

ABSTRACT:
An electromagnetic fluid pump having a magnetic circuit responsive to a predetermined position of a reciprocating magnetically permeable piston is disclosed. The reciprocating piston closes the magnetic circuit at the end of its pumping stroke increasing the value of the signal produced by a hall effect switch. The increased value of the generated signal energizes a solenoid coil returning the piston to a cocked position against the force of a resilient member which urges the piston forward on its pumping stroke.

REFERENCES:
patent: 3361069 (1968-01-01), Long
patent: 3364361 (1968-01-01), Burger
patent: 3381616 (1968-05-01), Wertheimer et al.
patent: 3515966 (1970-06-01), DeValroger et al.
patent: 3875920 (1975-04-01), Williams
patent: 4080552 (1978-03-01), Brown
patent: 4122378 (1978-10-01), Brown

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