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:
Dec. 29, 2009
Filed:
Jul. 23, 2007
Mohammed R. Islam, Saginaw, MI (US);
Mohammad S. Islam, Saginaw, MI (US);
Matthew W Mielke, Freeland, MI (US);
Tomy Sebastian, Saginaw, MI (US);
Sainan Feng, Saginaw, MI (US);
Mohammed R. Islam, Saginaw, MI (US);
Mohammad S. Islam, Saginaw, MI (US);
Matthew W Mielke, Freeland, MI (US);
Tomy Sebastian, Saginaw, MI (US);
Sainan Feng, Saginaw, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
An apparatus for measuring relative displacement between a first shaft and a second shaft includes first and second rotor assemblies. The first rotor assembly is coupled to the first shaft and is centered on an axis. The second rotor assembly is coupled to the second shaft. The second rotor assembly has first and second stator plates. Each of the first and second stator plates includes an upper surface and a lower surface. The first and second stator plates include a plurality of teeth extending in a direction radial of the axis. The apparatus further includes at least one magnet having a magnetic field and disposed on the first rotor assembly. The apparatus includes a flux collector arrangement having first and second collectors positioned adjacent the first and second stator plates, respectively, forming a gap. A sensing device disposed within the gap senses a magnetic flux of the magnetic field.