Electromagnetic brake with rotational structure for wear adjustm

Details Electromagnetic brake with rotational structure for wear adjustm Electromagnetic brake with rotational structure for wear adjustm

1992-11-13

1994-11-29

Oberleitner, Robert J.

Brakes

Wheel

Axially movable brake element or housing therefor

188171, 192111A, F16D 5902

Patent

active

053681380

ABSTRACT:
An electromagnetic brake is disclosed comprising a brake wheel, at least one friction surface attached to a respective friction plate and urged into frictional engagement with the brake wheel during braking. An electromagnet and an anchor serve to disengage the friction surface from the brake wheel when a current is supplied to the electromagnet. To compensate for the wear of the friction surface, the anchor is adapted to rotate in adjustment threads and thereby advance towards the magnet. Rotation of the anchor is caused by a coil spring. To maintain an essentially constant clearance between the electromagnet and the anchor when the brake is in the close state, the brake is provided with spring-loaded lugs mounted on a face of the anchor and protruding to predetermined distance towards the electromagnet. The spring-loaded lugs are adapted to limit the movement of the anchor towards the electromagnet when the brake is closed, and are compressed to allow the brake to be disengaged when power is supplied to the electromagnet.

REFERENCES:
patent: 2970681 (1961-02-01), Timmcke
patent: 3575268 (1971-04-01), Kimata
patent: 4175650 (1979-11-01), Miller
patent: 4582187 (1986-04-01), Sekella
patent: 4966255 (1990-10-01), Fossum
patent: 4993532 (1991-02-01), Weiss et al.

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