Spring-applied, air-released, slack-adjusting parking brake

Details Spring-applied, air-released, slack-adjusting parking brake Spring-applied, air-released, slack-adjusting parking brake

B - Operations, Transporting

61

H

188/66

B61H 15/00 (2006.01) B60T 17/08 (2006.01)

Patent

CA 1166171

(Case No. 7079) ABSTRACT OF THE DISCLOSURE A parking brake, primarily for use with railway vehicles, including a friction clutch associated with a fast-travel nut which is locked by the clutch against rotation on a threaded spindle connected to a brake head, under a force exerted by a plurality of stacked Belleville-type disc springs. The spring load may be overcome by air pressure acting on respective faces of a plurality of serially connected pistons, which, in effect releases the fast-travel nut for free spinning to there- by accommodate axial displacement of the spindle during normal service application and release of the brakes.

378936

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