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:
Feb. 03, 2004
Filed:
Apr. 24, 2002
Ulrich Grau, Emskirchen, DE;
INA-Schaeffler KG, , DE;
Abstract
The invention concerns an electrically rotatable shaft, and more particularly, an adjusting shaft ( ) of a fully variable mechanical valve train of an internal combustion engine, said shaft comprising an adjusting cam ( ). The low-friction and lash-free configuration of a drive required for a rapid and exact functioning of the fully variable mechanical valve train is achieved by the fact that the adjusting shaft ( ) is rotated by an actuator ( ) that comprises an adjusting lever ( ) connected rotationally fast to the adjusting shaft ( ), while the free end of the adjusting lever is articulated preferably on the screw nut ( ) of a screw-and-nut drive ( ) that is driven by an electromotor ( ).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile