Seven-speed powertrain of an automatic transmission for...

Details Seven-speed powertrain of an automatic transmission for... Seven-speed powertrain of an automatic transmission for...

2007-12-25

2007-12-25

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

Reexamination Certificate

active

11236988

ABSTRACT:
A seven-speed powertrain of an automatic transmission includes an input shaft; an output shaft disposed in-parallel with the input shaft; a primary shift portion including a compound planetary gear set having four operational elements and a first simple planetary gear set having three operational elements; a secondary shift portion including a second simple planetary gear set having three operational elements; and a transfer gear device. The operational elements of the primary shift portion are combined by three clutches, two brakes, and one one-way clutch. The operational elements of the secondary shift portion are combined by one clutch, one brake, and one one-way clutch.

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patent: 10115985 (2002-10-01), None
patent: 102004029952 (2005-01-01), None
patent: 07-027190 (1995-01-01), None

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