Friction apply device of an automatic transmission

Details Friction apply device of an automatic transmission Friction apply device of an automatic transmission

2006-07-07

2009-06-23

Bonck, Rodney H (Department: 3655)

192 clutches and power-stop control

Clutches

Operators

C192S083000, C192S070200, C475S146000

Reexamination Certificate

active

07549523

ABSTRACT:
A second clutch piston formed of a plurality of members including a cylindrical cylinder member, a disc-shaped bottom plate member that fits in one end portion of that cylinder member, and a snap ring, has a plurality of long positioning protrusions provided on an inner peripheral surface of the cylinder member. By abutting the disc-shaped bottom plate member against end surfaces of these positioning protrusions, the bottom plate member can be fit into the one end portion of the cylinder member without having to provide notches therein, which enables durability against a pulling force generated in the cylinder member when the friction apply device is applied to be maintained.

REFERENCES:
patent: 2879872 (1959-03-01), Van Ranst
patent: 3047115 (1962-07-01), Lee et al.
patent: 3224539 (1965-12-01), Hensel
patent: 2007/0161450 (2007-07-01), Onishi et al.
patent: 9-32919 (1999-02-01), None

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