Positive-displacement hydraulic motor

Details Positive-displacement hydraulic motor Positive-displacement hydraulic motor

1974-11-19

1976-06-08

Freeh, William L.

Motors: expansible chamber type

Independently operated timer, delay, pattern or cyclic control

91491, F01B 1306, F15B 2102

Patent

active

039615588

ABSTRACT:
In a positive-displacement hydraulic motor a valve is mounted so as to be moved positively, individually and continuously during the operation of the hydraulic motor. Spacings between adjacent pairs of valve ports, variable volume chambers and cam portions of the guide element are selected from a predetermined relationships. Such an arrangement makes it possible to predetermine the mode of operation for the hydraulic motor by selecting previously the speed of the movement of the valve.

REFERENCES:
patent: 3068695 (1962-12-01), Cohn et al.
patent: 3084513 (1963-04-01), Casassa et al.
patent: 3564976 (1971-02-01), Allen
patent: 3583283 (1971-06-01), Cunningham
patent: 3603211 (1971-09-01), Firth
patent: 3661057 (1972-05-01), Rogov

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