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:
Oct. 04, 1988
Filed:
Oct. 05, 1987
Rolland D Giampa, Clarkston, MI (US);
Douglas K Mehaffey, Fraser, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A variable valve lift and timing valve train mechanism includes a rocker arm having one end thereof operatively engaging a valve and its opposite end being engaged by a valve actuator, the upper surface of the rocker arm intermediate its ends having a predetermined cam surface profile which is adapted to cooperate with a working surface of an angular movable reaction member used to provide a fulcrum to thereby effect pivotal movement of the rocker arm in a valve opening direction. The point of line contact between the cam surface of the rocker arm against the working surface of the upper reaction member and the geometry of the upper surface of the rocker arm cooperate to control the amount of valve lift and its timing. The angular position of the reaction member used to control valve lift being controlled by a pivotable eccentric engaging an axially movable slide pin device interposed between the pivotable eccentric and the reaction member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile