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:
Mar. 15, 2011
Filed:
Sep. 16, 2008
Applicant:
Joong K. Lee, Chatham, CA;
Inventor:
Joong K. Lee, Chatham, CA;
Assignee:
KSR Technologies Co., Ridgetown, CA;
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A position sensor having a transmitter coil with both an outer loop portion and an inner loop portion. A receiver coil is disposed in close proximity to the transmitter coil and the receiver coil includes a first loop and an oppositely wound second loop. The receiver coil generates an electrical output signal when the transmitter coil is excited due to the inductive coupling between the transmitter and receiver coils. A movable coupler element varies the inductive coupling between the transmitter coil and the loops of the receiver coil as a function of the position of the coupler element.