Brakes – Position adjusters – Slack
Patent
1978-01-18
1979-07-17
Reger, Duane A.
Brakes
Position adjusters
Slack
188 795K, F16D 6554
Patent
active
041612400
ABSTRACT:
A ratchet action slack adjuster assembly for use with cam operated brakes. The assembly includes a rotatable actuating shaft for actuating a braking means and has a portion containing ratchet teeth. An actuator is mounted on the actuating shaft for providing input to the rotatable actuating shaft by arcuate movement. The actuator includes two identically stamped lever halves having dish-shaped base portions which define a cavity when the halves are fastened together. A plurality of pawl members engaging the ratchet teeth of the actuating shaft are disposed in the cavity and are pivotally supported by the lever. An annular adjustment member is axially spaced for mounting independently of the actuator on a support structure for lost rotary motion relative to the lever and the actuating shaft. The annular adjustment member has a ring portion with flanges which yieldably engage the ratchet teeth of the actuating shaft for preventing return rotation of the actuating shaft after it has rotated a predetermined amount defined by the ratchet teeth and has ratcheted to a new rest position. The annular adjustment member has a radially extending flange with holes for receiving bolts for mounting the adjustment member to a fixed support member. The holes are larger than the bolts to allow limited lost motion of the adjustment member relative to the support member.
REFERENCES:
patent: 1525568 (1925-02-01), Chapin
patent: 1860770 (1932-05-01), Bugatti
patent: 2296026 (1942-09-01), Freeman
patent: 2379796 (1945-07-01), Freeman et al.
Reger Duane A.
United States Steel Corporation
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