US Patent 7111717 Power transmission apparatus of four wheel drive apparatus

Patent 7111717 was granted and assigned to Honda on September, 2006 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Honda

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7111717

Date of Patent

September 26, 2006

Patent Application Number

10963545

Date Filed

October 14, 2004

Patent Primary Examiner

‌

Richard M Lorence

Patent abstract

A power transmission apparatus T of a four wheel drive vehicle is provided with a multiple disc clutch C engaged in accordance with a difference between rotational speeds of a front wheel Wf and a rear wheel Wr and a gear ratio of a second gear mechanism 5 for transmitting rotation of the rear wheel Wr to an output shaft 9 of the multiple disc clutch C is set to be larger than a gear ratio of a first gear mechanism 4 for transmitting rotation of the front wheel Wf to an input shaft 8 of the multiple disc clutch C.