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. 27, 1993
Filed:
Nov. 19, 1991
Christian Rigaux, Artannes sur Indre, FR;
SKF France, , FR;
Abstract
A device for monitoring the state of the tire of a vehicle wheel and for measuring the rotation characteristics of the wheel is described herein. The device includes a rotating encoder element constituted by a multipolar magnetic ring, whereby magnetic segments of different polarity are distributed circumferentially in a regular and alternating manner. The device further includes a transmitter coil mounted coaxially with the multipolar ring, a fixed pick-up element constituted by an induction coil enclosed in a U-shaped section of an annular flux focusing element arranged coaxially with the multipolar magnetic ring. The device is energized by an alternative electric current flowing through the transmitting coil which generates a magnetic field superimposed on the magnetic field created by the multipolar magnetic ring, wherein the pick-up element delivers a signal relating to the rotation characteristics of the wheel and the state of the tire.