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. 25, 2018
Filed:
Jul. 29, 2015
Applicant:
Micronas Gmbh, Freiburg, DE;
Inventor:
Rolf Hakenes, Glottertal, DE;
Assignee:
TDK-MICRONAS GMBH, Freiburg, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 33/07 (2006.01);
U.S. Cl.
CPC ...
G01R 33/07 (2013.01);
Abstract
An apparatus () for determining a stray magnetic field in the vicinity of a sensor is described. The apparatus () has a multipole permanent magnet () with four or more poles and an axis of rotation (). The multipole permanent magnet () produces a magnetic field () with magnetic field vectors (). Two vertical Hall sensors (and) are so arranged in two positions on a circular path () about the axis of rotation, such that the sum of the magnet field vectors () measured at the two positions is substantially zero.