The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2009
Filed:
Apr. 22, 2005
Craig Michael Sawdon, Williamston, MI (US);
Jerry William Kortge, Clarkston, MI (US);
John E. Doane, Goodrich, MI (US);
Gregory J. York, Fenton, MI (US);
Craig Michael Sawdon, Williamston, MI (US);
Jerry William Kortge, Clarkston, MI (US);
John E. Doane, Goodrich, MI (US);
Gregory J. York, Fenton, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A stuck lock-pin release system for a lock-pin in a cam phaser includes a stuck lock-pin detection module and a stuck lock-pin module that communicates with the stuck lock-pin detection module. The stuck-lock pin detection module periodically determines whether a lock-pin in a cam phaser is in a stuck park condition. When the lock-pin is in the stuck park condition, the stuck lock-pin module alternately biases the cam phaser in a first and second direction until the lock-pin is no longer in the stuck park condition.