US Patent 7789052 Variable valve actuator having self-centering pivotal piston

Patent 7789052 was granted and assigned to Caterpillar Inc. on September, 2010 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Caterpillar Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7789052

Date of Patent

September 7, 2010

Patent Application Number

11819913

Date Filed

June 29, 2007

Patent Primary Examiner

‌

Zelalem Eshete

Patent abstract

A variable valve actuator for a power system is provided. The variable valve actuator may have a hydraulic piston extendable to interrupt cyclical movement of an engine valve. The variable valve actuator may also have a pin member pivotally received by the hydraulic piston, and a retaining ring configured to axially align the pin member with the hydraulic piston as the hydraulic piston is retracted.

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