Piston seal and return spring

Details Piston seal and return spring Piston seal and return spring

1976-09-07

1977-10-11

Reger, Duane A.

Brakes

Wheel

Axially movable brake element or housing therefor

188196P, 188216, 277171, F16D 6554

Patent

active

040530302

ABSTRACT:
A seal for use on a disc brake piston/caliper assembly which seals the piston and also functions as a piston-return spring. The seal has a seal-retaining portion, a sealing lip portion, and a radially extending flex portion therebetween for retracting the piston by an amount equal to the flex portion retraction, thus automatically adjusting the piston position to compensate for normal pad wear. The seal can also include a locking flange and a separate pressure sealing lip to allow the seal to function without the previously required separate lathe cut sealing ring.

REFERENCES:
patent: 2938609 (1960-05-01), Burnett
patent: 3155200 (1964-11-01), Halibrand
patent: 3377076 (1968-04-01), Burnett
patent: 3467226 (1969-09-01), Belart
patent: 3915461 (1975-10-01), Gautier

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