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. 19, 2010
Filed:
Oct. 09, 2007
David B. Houser, Davison, MI (US);
Lamar H. Mclouth, Davison, MI (US);
David J. Elliott, Linden, MI (US);
David B. Houser, Davison, MI (US);
Lamar H. McLouth, Davison, MI (US);
David J. Elliott, Linden, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
In a return-to-zero stepping sequence for a stepper motor that drives the pointer of a gauge, steps that could potentially cause the pointer to flutter are modified. At least the initial potential flutter step of the stepping sequence is divided into sub-steps to progressively attenuate the motor torque, the motor is deactivated during intermediate potential flutter steps, and at least the final potential flutter step of the stepping sequence is divided into sub-steps to progressively re-apply the motor torque.