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:
Feb. 08, 2005
Filed:
Dec. 02, 2002
Curtis B. Johnson, Freeport, IL (US);
Thomas J. Olson, Freeport, IL (US);
Curtis B. Johnson, Freeport, IL (US);
Thomas J. Olson, Freeport, IL (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Methods and systems of utilizing a ring magnet for magnetic sensing applications thereof are disclosed. A magnetoresistive sensor device can be provided which is associated with a ring magnet configured as a sensing target. The magnetoresistive sensor device is insensitive to magnetic pole polarities. The ring magnet is generally magnetized to include a plurality of magnetic poles, such that at least one pole thereof is larger than at least one other pole thereof. An output signal can then be produced from the magnetoresistive sensor device via a digital circuit thereof. The output signal is independent of a rotation of the sensing target. The sensor itself is rotationally insensitive provided that the ring magnet is symmetrically magnetized.