Automatic transmission

Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked

Reexamination Certificate

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Details

C475S120000, C475S121000

Reexamination Certificate

active

06878086

ABSTRACT:
Second and third clutches are axially aligned so that the back side of the second clutch and the front side of the third clutch oppose each other, and a first clutch is positioned radially inward of the second and third clutches. Further, a clutch drum is extended so as to be used in common by the second and third clutches, the second clutch is engaged and disengaged from the axial front side by a second piston of a second oil pressure actuator, and the third clutch is engaged and disengaged from the axial rear side by a third piston of a third oil pressure actuator. The first through third clutches are positioned in a compact manner and can be independently operated.

REFERENCES:
patent: 2576336 (1951-11-01), Farkas
patent: 3581858 (1971-06-01), Haley
patent: 4237749 (1980-12-01), Koivunen
patent: 4957195 (1990-09-01), Kano et al.
patent: 4982826 (1991-01-01), Holbrook
patent: 5006102 (1991-04-01), Takase et al.
patent: 5069657 (1991-12-01), Taniguchi et al.
patent: 5090950 (1992-02-01), Sugano et al.
patent: 5203862 (1993-04-01), Nishida et al.
patent: 5662198 (1997-09-01), Kojima et al.
patent: 6139463 (2000-10-01), Kasuya et al.
patent: 62093546 (1987-04-01), None
patent: 04-285347 (1992-09-01), None
patent: 09-032919 (1994-07-01), None

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