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. 12, 2019
Filed:
Aug. 25, 2014
Applicant:
Nsd Corporation, Nagaoya-shi, Aichi, JP;
Inventors:
Hideki Kimata, Tokyo, JP;
Tomoshi Takatsuka, Tokyo, JP;
Assignee:
NSD CORPORATION, Nagoya-Shi, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 1/00 (2006.01); G01D 5/20 (2006.01); G01D 1/00 (2006.01);
U.S. Cl.
CPC ...
G01D 5/2073 (2013.01); G01B 1/00 (2013.01); G01B 2210/00 (2013.01); G01D 1/00 (2013.01);
Abstract
A rotation detector includes the following: a rotor and stators comprising a rotor substrate and stator substrates, each of which is a multilayer substrate; a rotor coil provided on the rotor substrate; and detection coils provided on the stator substrates. The frequency of an excitation signal used by said rotation detector is set so as to be higher than a prescribed frequency that would be required if the rotor and the stators were each made of a magnetic material.