Electro-shear brake

Details Electro-shear brake Electro-shear brake

1990-04-27

1993-02-16

Oberleitner, Robert J.

Brakes

Operators

Spring

188264E, 188 723, F16D 5526

Patent

active

051862883

ABSTRACT:
A motor brake unit comprising a housing member defining a fluid chamber disposed about the motor shaft of a motor, a shaft sleeve disposed within the fluid chamber nestingly engaging the motor shaft for rotation therewith, a first plurality of brake elements rotatable with the shaft sleeve, a brake collar secured to the housing member and disposed annularly about the shaft sleeve, a second plurality of brake elements non-rotatably supported by the brake collar, a pole piece for selectively engaging and disengaging the brake elements, a coil spring for normally biasing the pole piece to engage the brake elements, and a plurality of electromagnetic coils for selectively attracting the pole piece axially opposite the biasing force to disengage the brake elements.

REFERENCES:
patent: 2025098 (1935-12-01), Dudick
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patent: 3753182 (1973-08-01), Grove
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patent: 4415067 (1983-11-01), Cory
patent: 4483422 (1984-11-01), Cory
patent: 4606444 (1986-08-01), Sekella
patent: 4809824 (1989-03-01), Fargier et al.
patent: 4820946 (1989-04-01), Gutbrod
patent: 4821847 (1989-04-01), Langdon et al.
patent: 4938321 (1990-07-01), Kelley et al.

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