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. 06, 2000
Filed:
Oct. 08, 1997
Werner Wallrafen, Hofheim, DE;
VDO Adolf Schindling AG, Frankfurt, DE;
Abstract
A passive magnetic position sensor, has a substrate with a resistance network arranged on it, and a contact structure which is associated with the resistance network and which can be deflected under the action of a magnet device. An electric connection which is dependent on the position of the magnet device is produced between resistance network and contact structure. In order to provide a position sensor which has a high resolution, operates with a little wear, and is constructively simple to produce, the contact structure is developed as contact-spring structure, and the junction points of the resistance network are connected to contact surfaces also applied on the substrate. The contact-spring structure is arranged at a constant distance from the contact surfaces, the latter entering into contact with the contact-spring structure under the action of the magnet device. At least the contact-surfaces and the contact-spring structure are enclosed in a tight housing, and the magnet device is movable outside the tight housing. A stepped output signal is tapped off from the contact structure as a function of the position of the magnet device.