Automatic speed changer

Details Automatic speed changer Automatic speed changer

2007-06-05

2007-06-05

Marmor, Charles A (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

Reexamination Certificate

active

10519240

ABSTRACT:
A second planetary gear unit PR and a clutch C1for outputting reduced speed rotation are located on one axial side of a first planetary gear unit PU, with an output unit located therebetween. A clutch C2which connects/disconnects an input shaft2to/from a sun gear S2of the planetary gear unit PU and a clutch C3connects and disconnects the input shaft to/from a carrier CR2of the planetary gear unit are on the other axial side of the first planetary gear unit PU. Compared with a transmission wherein a clutch C2or clutch C3is located between the second planetary gear unit PR and the planetary gear unit PU, the second planetary gear unit PR and the first planetary gear unit PU can be located closer together, and a member which transmits the reduced speed rotation can be made shorter. Further, compared to the case wherein, for example, the clutches C1, C2, C3are located together on one axial side, oil supply to their servos is simplified.

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