Automatic brake adjusting mechanism

Details Automatic brake adjusting mechanism Automatic brake adjusting mechanism

F - Mech Eng,Light,Heat,Weapons

16

D

188/192

F16D 51/00 (2006.01) F16D 65/56 (2006.01)

Patent

CA 1232552

ABSTRACT OF THE DISCLOSURE An internal shoe drum brake has a pair of hydrau- lically actuated brake shoes and an automatic brake adjusting mechanism. The brake adjusting mechanism includes a variable length strut disposed between the two brake shoes and actuated to increase in length by means of a notched wheel which is rotated through engagement with a lever pivotally connected to one of the brake shoes and biased to rotate the wheel by means of a compression spring. The action of the first lever is controlled by a second lever also pivotally connected to the brake shoe and engageable by the strut and the first lever so that pivotal movement of the second lever permits a pivotal movement of the first lever of approximately three times as great as the movement of the second lever away from the strut.

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