Pump assembly with integral electronically commutated drive syst

Details Pump assembly with integral electronically commutated drive syst Pump assembly with integral electronically commutated drive syst

1990-10-16

1992-03-17

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

4174237, 310104, F04B 1700

Patent

active

050963902

ABSTRACT:
A pump assembly includes a pump head that is coupled to a permanent magnet rotor. The rotor is enclosed in a cavity defined by a fluid-tight cup that has an open first end and a closed second end. This cavity is in fluid connection with the pump head through its open first end. Outside the cup enclosure are disposed a plurality of electrical stator windings. A housing encloses all of the foregoing elements, and may also enclose a circuit board that includes circuitry for driving the stator windings. The pump assembly thereby provided is compact, efficient, and reliable.

REFERENCES:
patent: 1983262 (1934-12-01), Zorzi
patent: 2246777 (1941-06-01), Bordeaux et al.
patent: 2709965 (1955-06-01), Litzenberg
patent: 2752857 (1956-07-01), White
patent: 3572982 (1971-03-01), Kozdon
patent: 4822256 (1989-04-01), Laing
patent: 4891537 (1990-01-01), Shiraki et al.
patent: 4998032 (1991-03-01), Burgbacher

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