Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1979-06-28
1981-03-17
Reger, Duane A.
Brakes
Wheel
Axially movable brake element or housing therefor
188196D, F16D 6556
Patent
active
042562066
ABSTRACT:
A disc brake is provided with a fluid pressure operating mechanism for a service brake and concurrently with a mechanical operating mechanism for a parking brake. A parking lever of the parking brake is connected to an adjusting bolt through a spindle and a connecting link and further connected to a piston slidable in a cylinder through a sleeve nut. The adjusting bolt is prevented from rotation by a stopper plate fixed to the cylinder. The adjusting bolt and the sleeve nut are connected by thread and provided therebetween with a stopping means of rotation which allows a forward rotation of the sleeve nut toward a disc but limits a retracting rotation of the sleeve nut from the disc. The stopping means of rotation is provided with a locking means which effectively prevents a retraction of the sleeve nut. A clearance between friction pads and the disc is automatically adjusted by the fluid pressure operating mechanism when linings of the friction pads are worn more than a predetermined amount. Thus, the parking brake is ensured of a predetermined lever stroke at all times.
REFERENCES:
patent: 3550732 (1970-12-01), Beller
Akebono Brake Industry Company, Ltd
Reger Duane A.
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