Automatic wear adjuster for drum brakes

Details Automatic wear adjuster for drum brakes Automatic wear adjuster for drum brakes

1980-08-28

1983-03-01

Butler, Douglas C.

Brakes

Wheel

Transversely movable

188328, 188196BA, F16D 6556

Patent

active

043752519

ABSTRACT:
An internal drum brake of the kind including a strut between a hand brake lever pivoted on one shoe and the other shoe, has a wear adjuster comprising a pair of screw-threaded members with a pawl and pawl wheel for relative rotation thereof on operation of the service brake system, the axis of the screw-threaded members intercepting the line of action between the shoe and an abutment which limits return movement of the shoe to a brake-released position, one of the members having a spacer between the shoe and the abutment, the spacing effect of the spacer being changed on relative rotation of the screw-threaded members.

REFERENCES:
patent: 3400787 (1968-09-01), Keller et al.
patent: 3706360 (1972-12-01), Nyunoya
patent: 3709334 (1973-01-01), Kondo et al.
patent: 4121701 (1978-10-01), Gestkoff
patent: 4174770 (1979-11-01), Courbot
patent: 4217973 (1980-08-01), Johns et al.
patent: 4232766 (1980-11-01), Rupprecht

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