Cushion plate

Details Cushion plate Cushion plate

2008-01-15

2008-10-21

Lorence, Richard M (Department: 3681)

192 clutches and power-stop control

Clutches

Operators

C192S10900B

Reexamination Certificate

active

07438168

ABSTRACT:
A cushion plate is provided, for example, between a piston of a hydraulic servo and an adjacent friction plate in a frictional engagement element of an automatic transmission. The cushion plate is deflected by a pressing force of the piston to absorb an engagement shock. The cushion plate includes a main body portion formed into a belleville-spring shape, and a plurality of pawls that extend from the outer periphery of the main body for spline engagement with a member that is splined to, for example, the friction plate. A side wall of each pawl is formed with a curved recess extending circumferentially of the cushion plate and located adjacent the juncture (base) of the pawl at the outer periphery of the main body.

REFERENCES:
patent: 3250349 (1966-05-01), Byrnes et al.
patent: 4371066 (1983-02-01), Fujoka et al.
patent: 5480361 (1996-01-01), Murakami et al.
patent: 5857666 (1999-01-01), Zhi-Peng et al.
patent: 5893445 (1999-04-01), Dover
patent: 2005/0217964 (2005-10-01), Asahina et al.
patent: 10-246249 (1998-09-01), None
patent: 2003247564 (2003-09-01), None

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