US Patent 7591753 Multi-speed transmission

Patent 7591753 was granted and assigned to ZF Friedrichshafen on September, 2009 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

ZF Friedrichshafen

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75917530

Date of Patent

September 22, 2009

Patent Application Number

117050710

Date Filed

February 9, 2007

Patent Primary Examiner

‌

Tisha D Lewis

Patent abstract

The multi-speed transmission with one reverse and six forward gears has input and output shafts, planetary gear sets, six shafts, and five control elements. The input shaft couples the sun gear of gear set (P2) and detachably connected to shaft (3) or to shaft (6) and via clutch (14) to shaft (4). Shaft (3) couples the carrier of gear set (P1) and the ring gear of gear set (P2) and is connectable to the housing. Shaft (4) couples the sun gear of gear set (P1) and is connectable to the housing. Shaft (5) couples the ring gear of gear set (P1) and the carrier of gear set (P3). Shaft (6) couples the carrier of gear set (P2) and is connectable to the output shaft. The output shaft (2) couples the ring gear of gear set (P3) and the sun gear of gear set (P3) is non-rotatably coupled to the housing.