Clutch structure with piston having surface recessed from pressu

Details Clutch structure with piston having surface recessed from pressu Clutch structure with piston having surface recessed from pressu

1997-09-02

1999-06-22

Marmor, Charles A.

192 clutches and power-stop control

Clutches

Operators

192 7019, 192 8715, F16D 250638

Patent

active

059133970

ABSTRACT:
A clutch structure for a vehicular power train, includes a clutch disc and a piston moveable along an axis to force the clutch disc. The piston includes a generally cylindrical portion having projections extending axially in circumferentially spaced and parallel relation. The piston has a pressure surface engageable with the clutch disc upon the piston forcing the clutch disc. The piston also has a portion defined by a surface recessed from the pressure surface. The portion is disposed in a radial inner periphery of the cylindrical portion and extends along the axis. A groove is disposed within that portion.

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patent: 5630492 (1997-05-01), Yoshikawa

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