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. 11, 2006
Filed:
Jan. 23, 2004
Thomas Wolfgang Nehl, Shelby Township, MI (US);
Thomas Hubert Van Steenkiste, Ray, MI (US);
John R. Smith, Birmingham, MI (US);
Brian K Fuller, Rochester Hills, MI (US);
Avoki M. Omekanda, Rochester, MI (US);
Donald T. Morelli, White Lake, MI (US);
Joseph V. Mantese, Shelby Twp, MI (US);
Thomas Wolfgang Nehl, Shelby Township, MI (US);
Thomas Hubert Van Steenkiste, Ray, MI (US);
John R. Smith, Birmingham, MI (US);
Brian K Fuller, Rochester Hills, MI (US);
Avoki M. Omekanda, Rochester, MI (US);
Donald T. Morelli, White Lake, MI (US);
Joseph V. Mantese, Shelby Twp, MI (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
The subject invention provides an assembly for measuring movement of and a torque applied to a shaft extending between first and second ends and being hollow, specifically for measuring rotation and twisting of the shaft. A permanent magnet is disposed within the shaft for producing a parallel magnetic field emanating radially from the shaft. A sensor mechanism is positioned adjacent the shaft to detect the magnetic flux produced in response to the shaft being moved. The sensor mechanism includes a magnetostrictive (MR) material disposed annularly about the shaft and extends between first and second edges. A flux collector extends beyond the first and second edges of the magnetostrictive material to direct the magnetic flux through a Hall sensor to detect an axial component of the magnetic flux in response to twisting. A positional ring extends annularly around and spaced from the shaft and a positional sensor is disposed between the positional ring and the shaft for measuring a radial component of the magnetic flux in response to rotating.