Gear pump or motor with radial balancing

Details Gear pump or motor with radial balancing Gear pump or motor with radial balancing

1974-10-15

1976-06-08

Vrablik, John J.

Rotary expansible chamber devices

Pressure fluid radially balances working or rotating...

Counterbalancing fluid directed to rotating member shaft...

418131, F01C 2102, F03C 300, F01C 1908, F04C 1500

Patent

active

039618706

ABSTRACT:
A gear type hydraulic pump or motor wherein the stubs of the gears are surrounded by annular bearing members which are non-rotatably mounted in the housing. The forces which the stubs tend to transmit to the respective bearing members are counteracted by hydrostatic pressure fields produced by pressurized fluid which is entrapped in plenum chambers defined and completely surrounded by rectangular frame-like gaskets which are recessed into the surfaces surrounding the bores of the bearing members and are spaced apart from the nearest end faces of the respective gears. The gaskets may bear directly against the peripheral surfaces of the stubs or against the peripheral surfaces of cylindrical sleeves which are received in the bores of the bearing members and only the outer end portions of which are a tight fit in the respective bearing members.

REFERENCES:
patent: 2870719 (1959-01-01), Murray et al.
patent: 3034446 (1962-05-01), Brundage
patent: 3539282 (1970-11-01), Forschner

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