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:
Jan. 20, 2015
Filed:
Mar. 31, 2011
Applicants:
Theron J. Hicks, Grand Rapids, MI (US);
Jason L. Reene, Holland, MI (US);
Thomas Wright, Holland, MI (US);
Inventors:
Theron J. Hicks, Grand Rapids, MI (US);
Jason L. Reene, Holland, MI (US);
Thomas Wright, Holland, MI (US);
Assignee:
Johnson Controls Technology, Holland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/02 (2006.01); G01R 33/00 (2006.01); G01R 33/028 (2006.01); G01R 33/04 (2006.01);
U.S. Cl.
CPC ...
G01R 33/0023 (2013.01); G01R 33/028 (2013.01); G01R 33/04 (2013.01);
Abstract
The disclosure relates to a magnetometer in which direction of the Earth's magnetic field is determined on the basis of time variant differences in the inductance of a sensor coil of the digital compass which is a function of the orientation of the sensor coil with respect to the Earth's magnetic field. The magnetometer includes a sensing coil, a feedback resistor, and a comparator.