Hydraulic rotation control circuit

Details Hydraulic rotation control circuit Hydraulic rotation control circuit

1980-06-12

1982-12-07

Cohen, Irwin C.

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60493, 91436, 91457, F15B 13042

Patent

active

043620183

ABSTRACT:
A hydraulic rotation control circuit for a rotational actuator such as a hydraulic motor for rotating a rotary frame of a hydraulic crane, the circuit employing a combination of a number of check and variable reducing valves in a manner which allows smooth and delicate control of the rotation of the actuator to provide an operation performance equivalent to that of mechanical drive, including coasting operation of the motor.

REFERENCES:
patent: 2569881 (1951-10-01), Davies
patent: 2583185 (1952-01-01), McLeod
patent: 3080887 (1963-03-01), Brandenberg
patent: 3654836 (1972-04-01), Schexnayder
patent: 3841345 (1974-10-01), Cryder
patent: 3954046 (1976-05-01), Stillhard
patent: 4231396 (1980-11-01), Budzich

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