Split path power shift transmission

Details Split path power shift transmission Split path power shift transmission

2008-10-31

2011-10-04

Ho, Ha D. (Department: 3655)

Planetary gear transmission systems or components

Nonplanetary variable speed or direction transmission...

Plural power paths to planetary gearing

C475S207000

Reexamination Certificate

active

08029401

ABSTRACT:
A transmission for a vehicle includes an input shaft, a carrier sun shaft, and an output shaft. A planetary gear set includes a sun gear coupled with the carrier sun shaft, a ring gear coupled with the output shaft, and a plurality of planetary gears enmeshed between the sun gear and the ring gear. A plurality of shift elements each include a first gear coupled with the input shaft, and a second gear coupled with the carrier sun shaft and enmeshed with the first gear. A plurality of shift clutches are each selectively coupled between a corresponding shift element and the input shaft or carrier sun shaft. A low range clutch is selectively coupled between the input shaft and the plurality of planetary gears. A high range clutch is selectively coupled between the carrier sun shaft and the output shaft. A reverse range clutch is selectively coupled between an immovable feature and the plurality of planetary gears.

REFERENCES:
patent: 5573471 (1996-11-01), Shubinsky et al.
patent: 5971883 (1999-10-01), Klemen
patent: 6733412 (2004-05-01), Kumagai et al.
patent: 6869379 (2005-03-01), Voss et al.
patent: 7798937 (2010-09-01), Gitt
patent: 7896770 (2011-03-01), Earhart et al.
patent: 7913581 (2011-03-01), Jackson

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