Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1975-08-13
1976-12-07
Blix, Trygve M.
Brakes
Wheel
Axially movable brake element or housing therefor
92 98D, 92103M, 188 718, 188196R, 188370, F16D 5518
Patent
active
039957233
ABSTRACT:
A rigid and deformable hydraulic seal for a force-applying mechanism, the seal being interposed between a piston and a housing cavity. This seal is generally cup-shaped and has an annular outer end portion that is rigidly retained in a peripheral groove of the housing cavity. Adjacent to this end portion is a half torus or single convolution hoop portion open toward the cavity, with the seal further including a generally cylindrical side surface and a circular bottom portion, with this seal, together with the cavity, defining a fluid-tight variable volume chamber. Fluid pressure supplied to this chamber causes plastic deformation of the seal and permits relative motion to occur between the piston and housing. When used in a hydraulic brake apparatus, the plastic deformation of the seal provides automatic brake adjustment as a factor of lining material wear, whereas the elastic deformation which occurs as the fluid pressure in the chamber is reduced provides a slight retraction capability of the friction lining from the rotating brake member.
REFERENCES:
patent: 1085818 (1914-02-01), Oxhard
patent: 2106791 (1938-02-01), Brisson
patent: 2241056 (1941-05-01), Chilton
patent: 2839086 (1958-06-01), Engelberger
patent: 2942624 (1960-06-01), Good
patent: 3126879 (1964-03-01), Canfield
patent: 3376959 (1968-04-01), Holcomb et al.
patent: 3403754 (1968-10-01), Barrett et al.
patent: 3675743 (1972-07-01), Thompson
patent: 3851567 (1974-12-01), Thompson
patent: 3899057 (1975-08-01), Carre
Blix Trygve M.
Clark Equipment Company
Kazenske Edward R.
Ruf Ernst H.
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