Automatic transmission

Details Automatic transmission Automatic transmission

2009-08-07

2011-12-27

Young, Edwin A (Department: 3655)

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

C192S048619, C192S085250, C192S10600R

Reexamination Certificate

active

08083627

ABSTRACT:
An automatic transmission includes first and second clutches, a clutch drum, a piston, a plurality of friction plates, a hydraulic oil chamber, a cancel oil chamber, a return spring, and a cancel plate, wherein a plate member that forms a cylinder portion of the hydraulic oil chamber is provided between the piston and the clutch drum of the first clutch that is located on an inner diameter side, and an oil passage that supplies an oil to the cancel oil chamber of the second clutch that is located on an outer diameter side is formed between the clutch drum and the plate member.

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International Search Report dated Nov. 24, 2009 for U.S. National Phase Application No. PCT/JP2009/003172.

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