Multi-speed transmission
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United States of America Patent
Stats
-
Sep 22, 2009
Grant Date -
Jan 17, 2008
app pub date -
Feb 9, 2007
filing date -
Feb 14, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The multi-speed transmission with one reverse and seven forward gears has input and output shafts, three planetary gear sets, six shafts and six shifting elements. The input shaft couples the sun gear of gear set (P2) and detachably couples shaft (5), which couples the carrier of gear set (P3), and detachably couples the housing and shaft (4). Shaft (4) couples the carrier of gear set (P2), detachably couples the housing via brake (04), and detachably couples shaft (6) via clutch (46), which couples the sun gear of gear set (P3) and the hollow gear of gear set (P1). Shaft (3) couples the ring gear of gear set (P2) and the carrier of gear set (P1), the sun gear of gear set (P1) couples the housing, the output shaft couples the ring gear of gear set (P3). Either, shaft (3) or shaft (6) is detachably coupled to the housing.
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