Bidirectional clearance sensing brake adjuster

Details Bidirectional clearance sensing brake adjuster Bidirectional clearance sensing brake adjuster

1977-03-31

1978-06-13

Reger, Duane A.

Brakes

Position adjusters

Slack

188 795K, F16D 6556

Patent

active

040943909

ABSTRACT:
An automatic clearance adjuster for a cam actuated vehicle brake. The adjuster is disposed in a pivotal lever and includes a worm and worm gear, an adjusting mechanism for effecting a clearance decreasing rotation of the worm during the brake apply stroke and a clearance increasing rotation of the worm during the brake relesase stroke, a two-way torque limiting ratchet clutch which slips to prevent rotation of the worm by the adjusting mechanism when the shoes are in contact with the drum, and a roller clutch which allows a predetermined amount of clearance increasing rotation of the worm by the adjusting mechanism and then locks up and causes slippage of the torque limiting clutch to prevent further clearance increasing rotation of the worm.

REFERENCES:
patent: 3507369 (1970-04-01), Oliver
patent: 3949840 (1976-04-01), Cumming et al.
patent: 3997036 (1976-12-01), Zeidler

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