Pumps – Motor driven – Electric or magnetic motor
Patent
1995-02-27
1996-04-23
Bertsch, Richard A.
Pumps
Motor driven
Electric or magnetic motor
4175551, 417557, 417566, 92 85R, 92162P, F04B 1704
Patent
active
055097928
ABSTRACT:
A reciprocal type of pump structure wherein a piston has a linear function actuated by a pair of coils energized alternately and includes a plurality of tapered flutes. A check valve in an outlet of the structure which stretches to open said outlet under the impact of expelled fluids and of its own volition retracts to the closed position immediately upon the cessation of fluids being expelled.
REFERENCES:
patent: 2515110 (1950-07-01), Bornstein
patent: 3023708 (1962-03-01), Thiele
patent: 3554375 (1970-01-01), Willinger
patent: 3751188 (1973-08-01), Willinger et al.
patent: 4211150 (1980-07-01), Framberg
patent: 4775301 (1988-10-01), Cartwright et al.
patent: 5085563 (1992-02-01), Collins et al.
Scott Vernon R.
Smith Robert
Sullivan Paul J.
Bertsch Richard A.
Gregory Leo
McAndrews, Jr. Roland G.
Pumpworks, Inc.
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