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:
Dec. 19, 2006
Filed:
Jun. 01, 2002
Stefan Neuhoff, Essen, DE;
Reiner Buchner, Sinzing, DE;
Stefan Neuhoff, Essen, DE;
Reiner Buchner, Sinzing, DE;
Huf Hülsbeck +Fürst GmbH & Co, KG, Velbert, DE;
Siemens AG, Müchen, DE;
Abstract
The invention relates to an electric steering lock wherein a permanent magnet () and two different Hall sensors () are used to recognise a locking and an unlocking position. The pole transition () of the magnet () is oriented in the direction of the lift (). In order to increase efficiency, one sensor () is south-pole active and the other () is north-pole active. The sensors () are arranged in an intermediate area () between both end positions () of the pole transition () of the permanent magnet () and are disposed at a defined end distance () from both end positions (). At said end distance (), the N-active sensor () is oriented towards the north pole and the S-active sensor () is oriented towards the south pole of the permanent magnet. Said end distance () corresponds to the distance at which the magnetic flow density () of the permanent magnet () is at least identical to the threshold value () required to turn on () the N or-S-active sensor () at the highest temperature occurring during the use thereof.