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:
Aug. 11, 2009
Filed:
Apr. 15, 2008
Scott P. Kreger, Springfield, OH (US);
Daniel L. Kottmyer, Springfield, OH (US);
Scott P. Kreger, Springfield, OH (US);
Daniel L. Kottmyer, Springfield, OH (US);
Globe Motors, Inc., Dayton, OH (US);
Abstract
A multi-track sense magnet for use in a system for sensing the relative displacement of two elements, and including a magnetic structure that is moveable relative to detector devices for detecting movement of the magnetic structure. The magnetic structure includes at least a first track and a second track extending generally parallel to each other, each track including a plurality of sectors of alternating magnetic poles. A blocker track is located between the first and second tracks, wherein the blocker track includes a predetermined number of sectors corresponding to the number of sectors on the first track. Each sector of the blocker track is aligned with and defines an opposite magnetic pole to an adjacent sector of the first track to alter the magnetic field of the first track extending toward the second track.