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:
May. 01, 2007
Filed:
Jun. 09, 2004
Thaddeus Schroeder, Rochester Hills, MI (US);
Shaotang Chen, Troy, MI (US);
Avoki M Omekanda, Rochester, MI (US);
Thomas W Nehl, Shelby Township, MI (US);
Bruno Lequesne, Troy, MI (US);
Mohammad S Islam, Saginaw, MI (US);
Thaddeus Schroeder, Rochester Hills, MI (US);
Shaotang Chen, Troy, MI (US);
Avoki M Omekanda, Rochester, MI (US);
Thomas W Nehl, Shelby Township, MI (US);
Bruno Lequesne, Troy, MI (US);
Mohammad S Islam, Saginaw, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An apparatus measures relative displacement between a first end and a second end of a shaft. The first and second ends being centered on a shaft axis. The apparatus includes first and second ferromagnetic plates. The first ferromagnetic plate has a first side and a second side and is connected to the first end. The first ferromagnetic plate is centered on the shaft axis and has a plurality of ferromagnetic teeth extending from the first side and in a first direction parallel to the shaft. The second ferromagnetic plate has a first side and a second side and is connected to the second end. The second ferromagnetic plate is centered on the shaft axis. The first and second ferromagnetic plates form a gap. The apparatus further includes a plurality of magnets having a magnetic field and a sensing device. The magnets are coupled to the first side of the second ferromagnetic plate. The sensing device is disposed within the gap for sensing a magnetic flux of the magnetic field.