Brakes – Position adjusters – Slack
Patent
1975-04-07
1976-04-13
Reger, Duane A.
Brakes
Position adjusters
Slack
188 718, F16D 6554
Patent
active
039498433
ABSTRACT:
An automatically operative brake adjuster includes a cup-shaped member attached to a brake carrier member, with this member cooperating with a stepped bore in the carrier member to form an annular chamber having spaced opposed end surfaces. An annular follower member, slidably received and spring-biased within the annular chamber, has flange portions on opposite ends, with these flange portions cooperating with the opposed end surfaces to limit the movement of the follower member in both the brake-release and the brake-application directions. A piston, extending freely through the annular chamber, includes a tapered portion that carries a deformable hollow member in the annular chamber and is interference-fitted therewith. The hollow member, which preferably takes the shape of a circular or elliptical cylinder, is in abutment with one of the flange portions and, in response to pressurized fluid, the piston moves together with the hollow member and follower in the brake-application direction until the other flange portion engages one of the opposed end surfaces whereupon the piston is forceably urged through at least an axial portion of the hollow member and causes deformation thereof and axially repositions the piston to take up the undesired brake clearance. Brake release, in response to depressurization of the piston and the urging of the spring on the follower member, moves the piston together with the hollow and follower members until the latter engages one of the opposed end surfaces and thereby establishes a constant brake running clearance.
REFERENCES:
patent: 3542165 (1970-11-01), Lucien
patent: 3729072 (1973-04-01), Borkowski
patent: 3844388 (1974-10-01), Ditlinger et al.
Clark Equipment Company
Reger Duane A.
Ruf Ernst H.
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