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.

Date of Patent:
Sep. 15, 2009

Filed:

Feb. 16, 2007
Applicants:

Josef Baak, Waldkirch, DE;

Olaf Machul, Freiburg, DE;

Inventors:

Josef Baak, Waldkirch, DE;

Olaf Machul, Freiburg, DE;

Assignee:

Sick AG, Waldkirch, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 (2006.01); G01R 33/07 (2006.01);
U.S. Cl.
CPC ...
Abstract

A magnetic sensor for determining positions of an activation magnet along a monitored distance with at least two sensor elements. Both sensor elements are subjected to at least one component of a magnetic field of the activation magnet. An evaluation unit coupled to the sensor element generates at least one switching element that corresponds to a desired magnet position. Each sensor element is operative over the entire monitored distance, and for each desired magnet position there is one unambiguous group of signal values which is used by the sensor elements for generating the switching signals in the evaluation unit.


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