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:
Nov. 18, 2014
Filed:
Mar. 08, 2012
Zhe Xie, Rochester, MI (US);
Timothy P. Philippart, Orion, MI (US);
Philip C. Lundberg, Keego Harbor, MI (US);
Zhe Xie, Rochester, MI (US);
Timothy P. Philippart, Orion, MI (US);
Philip C. Lundberg, Keego Harbor, MI (US);
GM Global Technology Operations, LLC, Detroit, MI (US);
Abstract
A stepper motor assembly includes a unipolar winding stepper motor, four drivers, and a transmission control module. The stepper motor has four coil parts. Each driver has a transistor connected to one of the coil parts. Each driver is operable to drive a phase of the stepper motor, where first and second phases are opposites of each other and third and fourth phases are opposites of each other. The transmission control module houses the four transistors. A transmission is also disclosed that includes the disclosed stepper motor assembly.