Gear pump or motor with bypass throttle passage to prevent cavit

Details Gear pump or motor with bypass throttle passage to prevent cavit Gear pump or motor with bypass throttle passage to prevent cavit

1976-11-18

1978-06-27

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Working fluid portion fills intertooth spaces or spaces...

418131, 418180, 418189, 418206, F01C 1908, F01C 2100, F03C 300, F01C 116

Patent

active

040972062

ABSTRACT:
A gear pump or motor in which a pair of meshing gears are rotatably mounted in a housing and in which a throttle passage provides communication between a region of the housing in which, during rotation of the gears, high pressure is maintained and the region of the interstices between engaging teeth of the gears at which these interstices increase during such rotation, to prevent cavitation and to essentially reduce noise during operation.

REFERENCES:
patent: 2981200 (1961-04-01), Stephens
patent: 3113524 (1963-12-01), Fulton
patent: 3137238 (1964-06-01), Gordon
patent: 3474736 (1969-10-01), Lauck

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