Drag free sliding caliper disc brake bushing

Details Drag free sliding caliper disc brake bushing Drag free sliding caliper disc brake bushing

1978-07-25

1980-03-18

Kazenske, Edward R.

Brakes

Wheel

Axially movable brake element or housing therefor

188 733, 188196P, 277 11, 277 27, F16D 6554

Patent

active

041934814

ABSTRACT:
A caliper housing is slidably mounted on support pins with rubber-like bushings. Each bushing is compressed in a housing groove when the disc brake is actuated to move the housing in the brake apply direction. The bushing has a toroidal main body and a series of circumferentially spaced axially extending protrusions. The main body grips the cylindrical surface of a pin in slip-stick relation. Upon brake actuation the protrusions are compressed. Upon brake release they return to their original configuration, moving the housing on the pins in the release direction to provide zero brake drag of the brake shoes on the disc. The bushing main body slips relative to the pins only when sliding movement of the caliper housing during brake actuation is sufficient to require adjustment of the brake release position of the caliper housing relative to the support pins.

REFERENCES:
patent: 3202410 (1965-08-01), Schell
patent: 3628639 (1971-12-01), Daley
patent: 3738665 (1973-06-01), Bilco
patent: 3746348 (1973-07-01), Stone
patent: 4058084 (1977-11-01), Kawaguchi et al.

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