US Patent 7461620 Variable valve actuation device of internal combustion engine

Patent 7461620 was granted and assigned to Hitachi on December, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Hitachi

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7461620

Date of Patent

December 9, 2008

Patent Application Number

11653877

Date Filed

January 17, 2007

Patent Primary Examiner

‌

Ching Chang

Patent abstract

A valve actuating link is provided for transmitting a combined movement of a drive cam on a cam shaft and a control cam on a control shaft to a valve pressing structure of an engine valve. The valve actuating link comprises a bearing portion that bears the control shaft, a hook-shaped lower portion that surrounds the cam shaft keeping a given space therebetween and a cam portion that repeatedly pushes the valve pressing structure to induce an open/close operation of the engine valve. Each of a plurality of engine valves has its own respective drive cam, control cam, valve actuating link and valve pressing structure.