Hydraulic pump output pressure compensation system

Details Hydraulic pump output pressure compensation system Hydraulic pump output pressure compensation system

1992-05-21

1994-05-24

Bertsch, Richard A.

Pumps

Expansible chamber type

Having pulsation dampening fluid receiving space

E04B 1100

Patent

active

053143159

ABSTRACT:
A high pressure hydraulic pump output compensator which utilizes a free-floating piston in a closed cylinder forming a lower and an upper chamber. One end of the cylinder is connected to the input of a hydraulic pump operating in excess of 1,000 psi. The lower chamber further includes a hydraulic input and an output port. Compressed air is provided to the free-floating piston at the opposite end of the chamber which exerts a force downwardly on the free-floating piston. The output pressure from the hydraulic pump compresses the air within the cylinder until such time as the compressed air and water pressure are equalized. As the output from the hydraulic pump drops during its working cylinder, the compressed air forces the piston downward to maintain the hydraulic output pressure.

REFERENCES:
patent: 1846483 (1932-02-01), Gilbert
patent: 2430723 (1947-11-01), Lupfer
patent: 4201734 (1980-05-01), Ohnishi
patent: 4646782 (1987-03-01), Ezekoye
patent: 5036879 (1991-08-01), Ponci

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