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. 06, 2021
Filed:
Sep. 12, 2017
Applicant:
Ntn-snr Roulements, Annecy, FR;
Inventors:
Christophe Duret, Bluffy, FR;
Cécile Flammier, Annecy, FR;
Assignee:
NTN-SNR Roulements, Annecy, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/245 (2006.01); H02P 6/14 (2016.01); G01D 5/165 (2006.01); H01L 43/06 (2006.01); G01D 5/12 (2006.01);
U.S. Cl.
CPC ...
G01D 5/2451 (2013.01); G01D 5/12 (2013.01); G01D 5/165 (2013.01); G01D 5/245 (2013.01); H01L 43/06 (2013.01); H02P 6/14 (2013.01);
Abstract
The invention relates to a system having a coder with a magnetic track that exhibits an alternation of North and South magnetic poles separated by i Archimedean spiral transitions. The invention also includes a rotation sensor able to detect the periodic magnetic field emitted by the coder using several sensitive elements, the sensitive elements being distributed angularly along the magnetic track while forming between at least two sensitive elements an angle α which is designed so that the signals delivered by the elements are in quadrature.