Hollow piston assembly for brakes or clutches

Details Hollow piston assembly for brakes or clutches Hollow piston assembly for brakes or clutches

1977-03-09

1979-04-10

Lake, Roy

192 clutches and power-stop control

Clutches

Operators

291564R, 92107, 92129, 99279, F16D 1900, F16D 2500

Patent

active

041483847

ABSTRACT:
A hollow piston assembly for brakes or clutches comprises a first member having an annular plate portion, an inner cylindrical hub and a flange formed on the outer end of the plate portion. A second member defines an annular cavity therein and has an annular flange press-fit into a first recess defined at the juncture of the plate portion and the cylindrical hub of the first member and a radial flange press-fit into a second recess formed at juncture of the plate portion and the flange of the first member. The piston assembly may be reciprocally mounted in the housing of a brake package to selectively compress a plurality of interleaved friction discs upon pressurization of an annular actuating chamber, defined between the first member and the housing. A plurality of circumferentially disposed coil springs are mounted between the housing and the piston assembly to normally disengage the brake and to also hold the first and second members of the piston assembly in their press-fit relationship relative to each other.

REFERENCES:
patent: 2429512 (1947-10-01), Fuller
patent: 3750559 (1973-08-01), Wakabayaski
patent: 4040339 (1977-08-01), Ivey

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