Sealing device for an automobile disk brake

Details Sealing device for an automobile disk brake Sealing device for an automobile disk brake

1976-12-27

1979-05-29

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277170, 277212FB, 188 718, 251DIG1, 285DIG19, F16J 920

Patent

active

041565320

ABSTRACT:
A sealing device to be applied between a piston and a cylinder of a disk brake on an automobile. The sealing device comprises an annular seal groove provided in the inner surface of the cylinder and a seal ring inserted in the seal groove, the seal groove having a beveled wall between its front and bottom walls, the seal ring having a beveled surface provided between its front and outer surfaces and engageable with the beveled wall of the seal groove, the seal ring being compressed into the seal groove by the piston with a space between the front surface of the seal ring and the front wall of the seal groove. When the piston of the disk brake is activated hydraulically, the seal ring is elastically deformed with the movement of the piston to build up elastic energy. When the piston is set free from the hydraulic pressure, the piston returns easily to its original position by means of the elastic energy built up in the seal ring.

REFERENCES:
patent: 2180795 (1939-11-01), Christensen
patent: 3186521 (1965-06-01), Chouings
patent: 3285370 (1966-11-01), Swift
patent: 3377076 (1968-04-01), Burnett
patent: 3724605 (1973-04-01), Naismith et al.
patent: 3915461 (1975-10-01), Gautier

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