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:
Aug. 08, 2000
Filed:
May. 19, 1998
Jeffrey Jean Stege, Linden, MI (US);
Steven Alan Kornburger, Waterford, MI (US);
General Motor Corporation, Detroit, MI (US);
Abstract
A variable hysteresis module for use with an accelerator pedal with an electronic throttle control system for vehicles and the like includes a follower moveable along a back plate and urged by return springs against a cam actuator. The actuator acts against an angled side of the follower that resolves the pedal force on the actuator into a parallel component opposing the spring force and a normal component urging the follower against the back plate to develop friction that produces hysteresis. The hysteresis varies with the force of the return springs and so generally increases as the engine throttle is opened and decreases as the engine throttle is returned closed. If the spring force is reduced, the friction force is proportionally reduced. Other variations are also disclosed.