F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
188/193
F16D 51/52 (2006.01) F16D 51/20 (2006.01) F16D 65/22 (2006.01) F16D 65/56 (2006.01)
Patent
CA 1111359
DRUM BRAKE HAVING PAWL AND LEVER ABSTRACT OF THE DISCLOSURE A drum brake includes a backing plate with an anchor for pivotally engaging one end of a pair of brake shoes. A hydraulic actuator is engageable with the other end of the pair of brake shoes and is operable to move the pair of brake shoes from a rest position to a braking position. An extendible strut extends between the pair of brake shoes to limit the retraction of the pair of brake shoes upon termination of a braking application. A lever is pivotally coupled to one of the brake shoes and a pawl is pivotally coupled to the other brake shoe. The pawl and lever are releasably interlocked with their respective brake shoes via hooks which are received in slanted slots or openings. A resilient member cooperates with the pawl to retain the latter in engagement with the extendible member and also cooperates with the pair of brake shoes to urge the same into engagement with the hydraulic actuator. The extendible member engages the pair of brake shoes at an intermediate portion and the pivotal coupling between the lever and one brake shoe and the pawl and other brake shoe is disposed at a location between the intermediate portion and the other end of each brake shoe.
333823
Bendix Corporation (the)
Macrae & Co.
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