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. 18, 2020
Filed:
May. 16, 2019
Systems, methods, and apparatus for foreign object detection loop based on inductive thermal sensing
Applicant:
Witricity Corporation, Watertown, MA (US);
Inventor:
Hanspeter Widmer, Wohlenschwil, CH;
Assignee:
WiTricity Corporation, Watertown, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/10 (2006.01);
U.S. Cl.
CPC ...
G01V 3/10 (2013.01); G01V 3/101 (2013.01);
Abstract
This disclosure provides systems, methods and apparatus for detecting foreign objects. An apparatus for detecting a presence of an object is provided. The apparatus includes a coil configured to inductively sense a presence of an object based on an electrical characteristic of the coil that varies as a function of a temperature of the object when the object is exposed to an alternating magnetic field. The apparatus further includes a controller configured to detect a change in the electrical characteristic.