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. 12, 2010
Filed:
Apr. 01, 2005
Bernard Branchereau, Segre, FR;
Patrick Fayaud, Angers, FR;
Bernard Branchereau, Segre, FR;
Patrick Fayaud, Angers, FR;
Hutchinson Worldwide, Paris, FR;
Abstract
The invention relates to displacement encoder for a movable shaft, comprising a sleeve () which is intended to be fixed in rotation to the shaft () and an encoding element () which is made from magnetizable polymer and which is solidly connected to the sleeve, said encoding element being equipped with an encoding zone () having at least one polarized mark. The aforementioned encoding zone of the encoding element is covered with a protective layer () which is made from a polymer having a surface abrasion resistance greater than that of the magnetizable polymer. The invention also relates to a device comprising one such encoder and to a production method thereof.