Leading/trailing drum brake having servo parking brake

Details Leading/trailing drum brake having servo parking brake Leading/trailing drum brake having servo parking brake

1989-09-18

1991-12-10

Oberleitner, Robert J.

Brakes

Wheel

Transversely movable

188106A, F16D 5106

Patent

active

050709682

ABSTRACT:
A drum brake assembly wherein the hydraulic service brake acts as a leading/trailing brake and the parking or emergency brake acts as a duo-servo brake. A lever member is pivotally mounted on one of a pair of brake shoes and operated by a brake actuating lever pivotally mounted on a composite link disposed adjacent a rotation-preventing stop and operatively connected to the other of the brake shoes. The lever member acts on another composite link disposed adjacent a hydraulic actuator of the service brake and operatively connected to the other of the brake shoes.

REFERENCES:
patent: 2219764 (1940-10-01), Chaminade
patent: 3292745 (1966-12-01), Dombeck
patent: 3709334 (1973-01-01), Kondo et al.
patent: 4595084 (1986-06-01), Le Deit
patent: 4678067 (1987-07-01), Thompson
patent: 4768631 (1988-09-01), Heibel

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