Brake actuator having collet style slack adjuster

Details Brake actuator having collet style slack adjuster Brake actuator having collet style slack adjuster

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 65/72 (2006.01) B61H 15/00 (2006.01) F16D 65/56 (2006.01)

Patent

CA 2123767

A brake actuator includes a tubular housing member, connected at a first end to a cylindrical housing with a member for admitting fluid, a piston with a sealing member mounted for reciprocal movement within such cylindrical housing, a tubular stem connected at one end to such piston, the tubular stem having a first conical surface at its other end, a piston return disposed intermediate such first piston and the tubular housing, a flange connected at one end to another end of the tubular housing, a pair of abutment surfaces carried by such flange and an externally threaded rod having a first portion extending inside the tubular housing and such tubular stem and a second portion extending outwardly from such tubular housing and through the flange, the improvement of a collet style slack adjuster to adjust for wear of braking elements. Such collet style slack adjuster including a power collet threadedly engaging such threaded rod and a first plurality of flexible fingers connected to such power collet and positioned around such threaded rod. A second conical surface carried by such power collet matingly engages the first tubular stem conical surface for providing a clutch surface. A slack adjuster collet threadedly engages such threaded rod intermediate the power collet and the second end of such threaded rod. A portion of the slack adjuster collet is disposed between the flange abutment surfaces and a second plurality of flexible fingers are connected to the slack adjuster collet and positioned around such threaded rod.

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