US Patent 7640900 Variable valve operating device

Patent 7640900 was granted and assigned to Toyota on January, 2010 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Toyota

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7640900

Date of Patent

January 5, 2010

Patent Application Number

11658568

Date Filed

August 30, 2005

Patent Primary Examiner

‌

Ching Chang

Patent abstract

The present invention relates to a variable valve operating device and makes it possible to inhibit friction during driving force transmission and provide high durability through the use of a compact configuration.

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