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:
Sep. 10, 2002
Filed:
Dec. 21, 1999
Reinhard Stumpe, Neuhausen, DE;
Anton Grabmaier, Bietigheim-Bissingen, DE;
Martin Osterfeld, Bietigheim-Bissingen, DE;
Valeo Schalter und Sensoren GmbH, Bietigheim-Bissingen, DE;
Abstract
The invention pertains to an angle of rotation sensor, wherein a magnet that is arranged such that it can be turned relative to a sensor that is sensitive to magnetic fields is coupled with a rotatable body, the angle of rotation (&agr;) of which needs to be measured. The invention aims to significantly broaden the measuring range of such an angle of rotation sensor. The invention proposes to utilize an asymmetric magnetic field such that the maximum and the minimum of the magnetic field measured by the probe are spaced apart by an angular range in excess of 270°. Advantageous additional developments pertain to other options for adapting the magnetic field to the desired shape. These options include an air gap that changes over the angle of rotation and the utilization of asymmetric pole shoes.