Brakes – Position adjusters – Slack
Patent
1979-05-29
1981-02-10
Butler, Douglas C.
Brakes
Position adjusters
Slack
188 795K, 192111A, F16D 6556
Patent
active
042496446
ABSTRACT:
An improved slack adjuster (10) of the clearance sensing type for brakes of the type having a running clearance adjustable by controlled rotation of a shaft (52) such as cam (14) actuated brakes. The slack adjuster includes a one-way drive mechanism including a spring clutch (86) wrapped around the ends of a driving shaft (62) and a driven shaft (52) which is adapted to slip when the torque necessary to rotate the driven shaft exceeds a predetermined limit. The surface (138) of the driven shaft under the spring clutch is provided with a deposit (142) of material different from the remainder of the shaft which will improve the wear and/or frictional characteristics of the surface. The improvement comprises providing a shoulder (148) at the end (146) of the surface of the driven shaft closest the driving shaft which has been found to improve the resistance of the deposit to chip and/or separate from the shaft during assembly and/or use.
REFERENCES:
patent: Re26965 (1970-10-01), Sander et al.
patent: 3507369 (1970-04-01), Oliver
patent: 3901357 (1975-08-01), Reitz et al.
patent: 4071120 (1978-01-01), Hagin
Butler Douglas C.
Eaton Corporation
Gordon H. D.
McCloskey R. J.
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