US Patent 7587957 Multiple-ratio dual clutch vehicle transmission

Patent 7587957 was granted and assigned to Eaton Corporation on September, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Eaton Corporation

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75879570

Patent Inventor Names

Graeme A. Jackson0

Date of Patent

September 15, 2009

Patent Application Number

117023590

Date Filed

February 5, 2007

Patent Primary Examiner

‌

Tisha D Lewis

Patent abstract

The disclosed multiple-ratio power transmission mechanism for a vehicle includes main transmission gearing and countershaft gearing that establish selectively plural power flow paths from an engine to vehicle traction wheels. Ratio change clutches are engageable selectively to establish power flow paths and pre-selected power flow during a ratio shift sequence throughout an extended overall ratio spread without a requirement for additional gearing.