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:
Jan. 10, 2012
Filed:
Feb. 02, 2010
Laurent Tupinier, Reichstett, FR;
Olivier R. Marroux, Biard, FR;
Johann Michel, Reichstett, FR;
Paul-antoine Tritschler, Illkirch, FR;
Nandiaye 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;
Nandiaye Ndao, Strasbourg, FR;
Bernard Kress, Neubourg, FR;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An angle sensor for detecting an out-of-round condition includes a disc supporting angle coder 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 coder of the support disc in order to code its angular position, a collimator of the said beam before interference and a photo detector of the modulated beam after interference. In one embodiment, two optical systems arranged 90° from each other are employed. An alternative embodiment includes one optical system and the disc includes a circular track radially centred in at least one of its angular positions relative to the incident collimated light beam, and a radially orientated photo detector.