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. 28, 2017
Filed:
May. 27, 2014
Applicant:
Allegro Microsystems, Llc, Worcester, MA (US);
Inventors:
Paul A. David, Bow, NH (US);
Ryan Metivier, Nashua, NH (US);
Assignee:
Allegro MicroSystems, LLC, Worcester, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/14 (2006.01); H01F 7/06 (2006.01); H01F 7/02 (2006.01); G01D 5/244 (2006.01);
U.S. Cl.
CPC ...
H01F 7/06 (2013.01); G01D 5/145 (2013.01); G01D 5/24438 (2013.01); H01F 7/0278 (2013.01);
Abstract
A magnet includes a magnetic body having a length and width. The body has a first notch in one side and extending along at least a portion of the length of the body, and a second notch in an opposite side of the body extending along at least a portion of the length of the body. A magnetic field produced by the body has a substantially uniform magnetic flux along at least a portion of the length of the body. A system for detecting a target includes one or more magnetic field sensing elements positioned within the portion of the magnetic field having substantially uniform flux.