Invention Grant
- Patent Title: Multiple speed automatic transmission
- Patent Title (中): 多速自动变速器
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Application No.: US11595497Application Date: 2006-11-09
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Publication No.: US07686730B2Publication Date: 2010-03-30
- Inventor: Reid A. Baldwin
- Applicant: Reid A. Baldwin
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: MacMillan, Sobanski & Todd, LLC
- Agent David B. Kelley
- Main IPC: F16H3/62
- IPC: F16H3/62

Abstract:
A multiple speed transmission includes an input and output; a first, second, third and fourth planetary gear sets, each gear set including a sun gear, a ring gear, a carrier, and pinions supported on the carrier and meshing with the sun gear and the ring gear; a first epicyclic gearing assembly including the first gear set, the second gear set, a first clutch, a first brake, a second brake, and first, second, third and fourth rotating members, said first clutch being operable to couple said first rotating member to the input, said first brake being operable to hold said fourth rotating member against rotation, and said second brake being operable to hold said second rotating member against rotation; and a second epicyclic gearing assembly including the third gear set, the fourth gear set, a second clutch, a third clutch, a third brake, and fifth, sixth, seventh and eighth rotating members, the third rotating member being secured to the eighth rotating member, said second control clutch being operable to couple said fifth rotating member to the input, said second control clutch being operable to couple said seventh rotating member to the input, said third brake being operable to hold the seventh rotating member against rotation, and said sixth rotating member being secured for rotation to the output.
Public/Granted literature
- US20080113844A1 Multiple speed automatic transmission Public/Granted day:2008-05-15
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