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:
Nov. 27, 2007
Filed:
May. 15, 2003
Brian George Babin, Williamsburg, VA (US);
Brian George Babin, Williamsburg, VA (US);
Siemens VDO Automotive Corporation, Auburn Hills, MI (US);
Abstract
A through the hole rotary position sensor which incorporates a single ring magnet with a central aperture is disclosed. The rotating shaft whose angular position is to be sensed is adapted to be received in the central aperture. The through the hole rotary position sensor in accordance with the present invention also includes a pair of pole pieces which extend at least partially around the circular magnet. One or more magnetic flux responsive elements are disposed adjacent the pole pieces. In order to shield the sensor from undesirable magnetic flux influences through the rotatable shaft, an optional internal shunt ring may be provided around the exterior of the rotatable shaft. In order to shield the sensor from undesirable external magnetic flux influences, an optional external shunt ring and top and bottom shunt discs may also be provided. The circular magnet, pole pieces, magnetic flux responsive element, optional shunt rings and shunt discs are carried by a non-magnetic housing. By utilizing a simple circular or ring magnet, the cost and complexity of the sensor is relatively lower relative to other known sensors.