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. 26, 2019
Filed:
Jun. 08, 2016
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Paul A. David, Bow, NH (US);
Ravi Vig, Bow, NH (US);
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/14 (2006.01); G01D 5/16 (2006.01); G01P 3/488 (2006.01); G01B 7/02 (2006.01);
U.S. Cl.
CPC ...
G01D 5/142 (2013.01); G01B 7/023 (2013.01); G01D 5/147 (2013.01); G01D 5/16 (2013.01); G01P 3/488 (2013.01);
Abstract
A back-biased magnetic field sensor can have one or more vertical Hall effect elements arranged within a substrate region of a substrate, wherein magnetic fields are oriented substantially vertical to the substrate within the substrate region when a ferromagnetic object is not proximate. When the ferromagnetic object becomes proximate, the magnetic field sensor can sense at least the proximity, and, in some embodiments, can also localize a position of the ferromagnetic object relative to the magnetic field sensor.