Power control devices for hydrostatic pumps

Details Power control devices for hydrostatic pumps Power control devices for hydrostatic pumps

1984-12-28

1987-01-27

Casaregola, Louis J.

Pumps

Condition responsive control of drive transmission or pump...

Plural pumps with individual or relative control

417218, 417222, F04B 126

Patent

active

046391959

ABSTRACT:
A power control device for an adjustable hydrostatic pump with a lever controlling a control valve piston and a pressure measuring piston loaded with feed pressure acting on said lever to control the pressure feed to a servo piston is provided wherein the pressure measuring piston loaded with feed pressure is mounted in a structural member slidable with the servo piston and slides lengthwise of the lever and the control valve piston is biased by resilient member toward the pressure measuring piston.

REFERENCES:
patent: 3407738 (1968-10-01), Bosch
patent: 3554671 (1971-01-01), Schlinke
patent: 3669570 (1972-06-01), Himmler
patent: 3694108 (1972-09-01), Pensa
patent: 3958496 (1976-05-01), Wallin
patent: 4077744 (1978-03-01), Persa
patent: 4273517 (1981-06-01), Heyl
patent: 4544330 (1985-10-01), Schniederjan

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