Double diaphragm pump

Details Double diaphragm pump Double diaphragm pump

1991-09-30

1993-06-29

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

91275, 251 65, 13762565, F04B 4306

Patent

active

052228762

ABSTRACT:
A double diaphragm pump having diaphragms connected by a coupling rod and separating two diaphragm chambers, a control spool displaceable in dependence on the position of the diaphragms, with closure means for alternate freeing and closing control passages arranged in a control spool housing for alternate pressurizing and relieving of a driving medium chamber with driving medium, and an actuating member coupled with the diaphragm movement and magnetically with the control spool.

REFERENCES:
patent: 2811979 (1957-11-01), Presnell
patent: 3001360 (1961-09-01), Budzich
patent: 3192865 (1965-07-01), Klempay
patent: 3203439 (1965-08-01), Beckett
patent: 3304126 (1967-02-01), Rupp
patent: 4406596 (1983-09-01), Budde
patent: 4509402 (1985-04-01), Salmonson
patent: 4889035 (1989-12-01), Goodnow
WO-A-8 910 485 2 Nov. 1989 Gyllinder.

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