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:
Nov. 04, 2014
Filed:
Sep. 14, 2012
Hirokazu Kobayashi, Kawasaki, JP;
Osamu Kawatoko, Kawasaki, JP;
Shozaburo Tsuji, Kawasaki, JP;
Kenichi Nakayama, Miyazaki, JP;
Hirokazu Kobayashi, Kawasaki, JP;
Osamu Kawatoko, Kawasaki, JP;
Shozaburo Tsuji, Kawasaki, JP;
Kenichi Nakayama, Miyazaki, JP;
Mitutoyo Corporation, Kawasaki, JP;
Abstract
An inductive detection encoder according to the present invention includes: first and second members which are oppositely disposed so as to relatively move in a measurement direction; a transmitting coil formed in the first member; a magnetic flux coupled body which is formed in the second member and coupled with a magnetic field generated by the transmitting coil; and a receiving coil formed in the first member and having receiving loops. At least one of the transmitting coil and the receiving coil has a specific pattern that impairs the uniformity and periodicity of a pattern; and a dummy pattern formed in a position corresponding to a specific phase relationship of a cycle generated by the track with respect to the specific pattern.