Brake for a hydraulic motor

Details Brake for a hydraulic motor Brake for a hydraulic motor

1983-07-22

1985-12-10

Look, Edward K.

Power plants

Pressure fluid source and motor

Having a mechanical clutch or brake device in the power train

91 45, F16D 3102

Patent

active

045571090

ABSTRACT:
A spring applied and hydraulically released motor shaft brake apparatus for a hydraulic motor which is compact in size. The brake apparatus includes a piston slidably mounted in a cylinder defining a brake chamber and a drain chamber. The piston is slidably and rotatably mounted on the motor shaft and a spring is disposed in the drain chamber for biasing the piston towards the brake chamber to thereby lock the motor shaft against rotation. The brake chamber is selectively connectible with a pressurized fluid source while the drain chamber is connected with a drain. The piston has formed therein a passage with a restrictor disposed therein for restricting flow of fluid in the passage.

REFERENCES:
patent: 2670828 (1954-03-01), McFarland
patent: 3118520 (1964-01-01), Tjernstrom
patent: 3536230 (1970-10-01), Williams
patent: 3831718 (1974-08-01), Muller et al.
patent: 3917248 (1975-11-01), Mayer
patent: 4479506 (1984-10-01), Goans

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