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:
Jun. 04, 2002
Filed:
Sep. 25, 1998
Francis Travostino, Annecy-le-Vieux, FR;
A. John Santos, Farmington, CT (US);
Mark E. LaCroix, New Hartford, CT (US);
Stephen J. Lyle, Torrington, CT (US);
The Torrington Company, Torrington, CT (US);
Abstract
The invention relates to a digital sensor of relative position, which has a circular multipolar magnetic ring which is mobile in rotation opposite a stationary magnetic sensor comprised of at least two sensitive elements, respectively positioned facing a main track and a “revolution tick” reference track, and a device for processing of the output signals, such that on the magnetic ring, a magnetic pattern is produced from a pair of north and south poles whose transition is different from the transition between the other north and south poles of the magnetic ring, and of which the angular width of the north pole is different at the site of the “revolution tick” reference track. The sensitive elements can be three in number, the first of which faces reference track and of which the other two face the main track, or they can be produced in the form of two parallel bars.