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:
Apr. 26, 2016
Filed:
Aug. 31, 2012
Xinyu Zhou, Troy, MI (US);
Moussa Ndiaye, Canton, MI (US);
Michael Partridge, Brighton, MI (US);
Xu Han, Novi, MI (US);
Michael Mcleod, Grand Blanc, MI (US);
Xinyu Zhou, Troy, MI (US);
Moussa Ndiaye, Canton, MI (US);
Michael Partridge, Brighton, MI (US);
Xu Han, Novi, MI (US);
Michael McLeod, Grand Blanc, MI (US);
GM Global Technology Operations Inc., Detroit, MI (US);
Abstract
A linear position sensor assembly having a magnetic shield minimizes interference (noise) from adjacent electrical and electromagnetic devices, particularly solenoids. The sensor assembly includes a permanent magnet linear contactless displacement (PLCD) sensor comprising a pair of magnetic field sensors which are spaced apart by a member of high magnetic permeability such as a metal bar. The sensors and metal bar are enclosed, i.e., surrounded on three sides, by a cover or shield of high magnetic permeability material such as steel or mu metal, for example. A permanent magnet is disposed in sensed proximity to the sensors and translates with a clutch actuator component. When the clutch actuator component translates axially, the two field sensors provide a signal to associated electronics having high linearity, low noise and no deadband.