Apparatus for feeding oil to a clutch

Details Apparatus for feeding oil to a clutch Apparatus for feeding oil to a clutch

2006-02-14

2006-02-14

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

C475S275000

Reexamination Certificate

active

06997840

ABSTRACT:
A transmission includes at least one planetary gear set having first, second and third members; a clutch pack connected to one of the members; and a rotatable housing member connected to another one of the members. A piston assembly is supported on the rotatable housing member and rotatable therewith. The piston assembly includes a thrust bearing operatively connected with an axially movable piston to receive an apply force from the piston, and a piston apply member positioned between the thrust bearing and the clutch pack for transmitting the apply force to the clutch pack. Fluid for applying the piston is carried through a stationary support member, through the rotatable housing member, and into the piston assembly.

REFERENCES:
patent: 4070927 (1978-01-01), Polak
patent: 4420992 (1983-12-01), Windish
patent: 4709594 (1987-12-01), Maeda
patent: 5106352 (1992-04-01), Lepelletier
patent: 5599251 (1997-02-01), Beim et al.
patent: 6053839 (2000-04-01), Baldwin et al.
patent: 6071208 (2000-06-01), Koivunen
patent: 6083135 (2000-07-01), Baldwin et al.

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