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

1983-03-10

1985-10-01

Halvosa, George E. A.

Brakes

Operators

Spring

92 62, 92130A, 188196D, 188202, F16D 6524

Patent

active

045440476

ABSTRACT:
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 thereby accommodate axial displacement of the spindle during normal service application and release of the brakes.

REFERENCES:
patent: 3100032 (1963-08-01), Larsson
patent: 3101219 (1963-08-01), Herrera
patent: 3338356 (1967-08-01), Sobol et al.
patent: 3547233 (1970-12-01), Girvon
patent: 3599761 (1971-08-01), Schultz et al.
patent: 3633715 (1972-01-01), Burnett
patent: 3704653 (1972-12-01), Higgins
patent: 3777857 (1973-12-01), Hughes
patent: 4186649 (1980-02-01), Sundstrom

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