Rotary gear pump or motor for fluids

Details Rotary gear pump or motor for fluids Rotary gear pump or motor for fluids

1988-04-18

1989-05-16

Koczo, Michael

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

F04C 208, F04C 1500

Patent

active

048305928

ABSTRACT:
A gear pump or motor comprises a pair of rotary gears which are in external meshing engagement with each other. A thrust plate is pressed against the side faces of the gears by means of a plurality of pressure areas which are produced by means of a sealing and compensating unit. The unit is urged piston-like by virtue of fluid pressure chambers against the back of the thrust plate to engage it against the gears. Depending on the direction of rotation of the gears of the machine the pressure areas define the general configuration of a 3 or a .epsilon..

REFERENCES:
patent: 3371615 (1968-03-01), Pettyjohn et al.
patent: 4242066 (1980-12-01), Hodgson
patent: 4358260 (1982-11-01), Joyner
patent: 4465444 (1984-08-01), Dworak et al.
patent: 4527966 (1985-07-01), Laumont
patent: 4606713 (1986-08-01), Lipscombe

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