Apparatus for noise suppression in a gear pump

Details Apparatus for noise suppression in a gear pump Apparatus for noise suppression in a gear pump

1977-06-23

1978-12-19

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Working fluid portion fills intertooth spaces or spaces...

418131, 418189, F01C 1908, F01C 2100, F01C 118, F04C 104

Patent

active

041303830

ABSTRACT:
A pressure plate provides a trapped pressure relief groove oriented along the line of action of mating gears in a gear pump. The groove communicates the fluid trapped between the gear teeth with both the inlet and outlet, thereby reducing high squeezed pressures and lowering hydraulic noise levels. Noise suppression is apparent at all speeds, and is particularly apparent at high pump operating speeds.

REFERENCES:
patent: 2424751 (1947-07-01), Heckert
patent: 2915976 (1959-12-01), Demtchenko
patent: 3303792 (1967-02-01), Littlewood

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