Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Reexamination Certificate
2008-02-22
2010-06-08
Wright, Dirk (Department: 3655)
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
C192S048619
Reexamination Certificate
active
07731623
ABSTRACT:
An automatic transmission includes two clutches that are disposed such that they overlap in an axial direction and occupy different positions in a radial direction. Each of the two clutches includes a clutch drum, a piston that forms a working fluid chamber for which a portion of the clutch drum serves as a cylinder, a plurality of friction plates that engage the clutch drum, and a cancel oil chamber that is disposed on a rear face side of the piston and that cancels a centrifugal oil pressure that acts on the working fluid chamber.
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Iizuka Kohei
Katou Hiroshi
Kitou Masashi
Nishida Masaaki
Aisin AW Co. Ltd.
Oliff & Berridg,e PLC
Wright Dirk
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