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. 13, 1993
Filed:
Dec. 16, 1991
Seth A Gutkowski, Saginaw, MI (US);
Thomas W Weisgerber, Saginaw, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An automotive power steering gear has a pair of permanent magnet driving discs supported on a housing of the steering gear and continuously rotated in opposite directions corresponding to right and left turn rotation of an output shaft of the steering gear. A soft, magnetically permeable driving disc is supported on the housing between the driving discs for rotation and for bodily shiftable movement toward and away from respective ones of the driving discs. The driven disc is drivingly connected to the output shaft of the steering gear. When steering effort is applied at a steering wheel connected to an input shaft of the steering gear, a cam and follower apparatus bodily shifts the driven disc toward the one of the driving discs rotating in the direction corresponding to the direction of the applied effort. The rotating magnetic flux field of the driving disc intercepts the driven disc and induces thereon a magnetic steering assist torque in the direction of the applied effort.