Return spring for a clutch or brake of an automatic transmission

Details Return spring for a clutch or brake of an automatic transmission Return spring for a clutch or brake of an automatic transmission

1997-07-07

1999-04-13

Lorence, Richard M.

192 clutches and power-stop control

Clutches

Operators

192109R, 188 715, 188 7331, 267161, F16D 250638

Patent

active

058934456

ABSTRACT:
First and second sets of friction discs for a clutch or brake of an automatic transmission are arranged alternately on a member, on which one of the sets is drivably engaged with a spline. A Belleville spring having a discontinuous annular outer band is located with a slight radial interference within a groove such that the band is stabilized and held in position to prevent inadvertent dislocation of the friction discs from the clutch member to which they are assembled. A clutch cylinder supports a piston moveable toward the friction discs to engage the clutch and is urged by the Belleville spring out of contact with the friction disc when hydraulic pressure is removed from the cylinder.

REFERENCES:
patent: 3237739 (1966-03-01), Pritchard
patent: 3313385 (1967-04-01), Forster
patent: 3858698 (1975-01-01), Hause
patent: 4934502 (1990-06-01), Horsch
patent: 5305663 (1994-04-01), Leonard et al.
patent: 5416966 (1995-05-01), Boerger, Jr. et al.
patent: 5429557 (1995-07-01), Beim
patent: 5653322 (1997-08-01), Vasa et al.

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