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:
Mar. 30, 2010
Filed:
May. 30, 2007
Laurent Tupinier, Reichstett, FR;
Olivier R. Marroux, Biard, FR;
Johann Michel, Reichstett, FR;
Paul-antoine Tritschler, Illkirch, FR;
Mandiaye Ndao, Strasbourg, FR;
Bernard Kress, Neubourg, FR;
Laurent Tupinier, Reichstett, FR;
Olivier R. Marroux, Biard, FR;
Johann Michel, Reichstett, FR;
Paul-Antoine Tritschler, Illkirch, FR;
Mandiaye Ndao, Strasbourg, FR;
Bernard Kress, Neubourg, FR;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
Device for detection of out-of-round on an angle sensor including a disc supporting angle coding means rigidly attached to a rotating shaft and at least one fixed optical system including a coherent light source emitting a beam interfering with the angle coding means of the support disc in order to code its angular position, means for collimation of the said beam before interference and a photodetector of the modulated beam after interference. In accordance with one possibility, it includes two optical systems arranged 90° from each other. Alternatively, there is only one optical system and the disc includes a circular track radially centered in at least one of its angular positions relative to the incident collimated light beam, and a radially orientated photodetector.