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:
Jul. 31, 2007
Filed:
Nov. 10, 2004
Pascal Desbiolles, Thorens-Glieres, FR;
Pascal Desbiolles, Thorens-Glieres, FR;
S.N.R. Roulements, Annecy Cedex, FR;
Abstract
A system for determining the absolute torque applied to a rotating shaft includes a sensitive element that is deformable under torsion and a measuring device having first and second coders that are intended to be rotationally fixed, respectively, in the vicinity of each end of the sensing element. The coders have a singularity or several equally distributed singularities; first and second fixed sensors disposed opposite to and at an air gap which is a predetermined distance from, respectively, the first and second coders, wherein each sensor is able to deliver a signal having a pulse corresponding to the detection of a singularity of the coder. The system also includes a device for processing the signals transmitted by the sensors that is able to calculate the angular difference between the singularities in order to determine, by comparison with a calibration difference, the absolute torque applied.