Drum brake

Details Drum brake Drum brake

2007-02-20

2007-02-20

Schwartz, Christopher P. (Department: 3683)

Brakes

Wheel

Transversely movable

Reexamination Certificate

active

10905789

ABSTRACT:
An adjuster for a strut located between first and second friction members for a drum brake. The strut has a shaft that is free to rotate in a first end member and threaded into the second end member. A lever pivots during a brake application and engages a ratchet wheel on the shaft to rotates the shaft and expand the strut to maintain a minimum running clearance with respect to a rotatable member. A bi-metal coil strip that is fixed to the strut has a free end that is aligned with the lever arm. The strip responds to a predetermined temperature by moving the lever arm away from the ratchet wheel such movement of the lever does not rotate the ratchet wheel and expand the strut. Thus, on termination of a brake application a current running clearance is sustained without being affected by the predetermined temperature.

REFERENCES:
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patent: 6918468 (2005-07-01), Girini et al.
patent: 2003/0226729 (2003-12-01), Ohnishi et al.

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