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:
Mar. 25, 1997
Filed:
Nov. 23, 1993
Harald Leiderer, Woerth, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A configuration for contactless detection of the rpm or speed or of the position of a sensor part includes a differential Hall sensor having a carrier plate with two sides, a permanent magnet disposed on one of the sides, and Hall elements secured on the other of the sides for scanning teeth or segments and gaps of a sensor part of ferromagnetic material being rotatable about an axis or linearly movable in a given direction of motion. According to one embodiment, the carrier plate has an axis of symmetry being perpendicular to the carrier plate and perpendicular to the given direction of motion, and the permanent magnet has a direction of magnetization forming a predetermined magnetization angle with a normal to the given direction of motion. According to another embodiment, the carrier plate has an axis of symmetry being perpendicular to the carrier plate and forming a predetermined carrier plate angle with a normal to the given direction of motion, and the permanent magnet has a direction of magnetization forming a predetermined magnetization angle with a normal to the given direction of motion.