Invention Grant
- Patent Title: Inductive detection encoder and digital micrometer
- Patent Title (中): 感应检测编码器和数字千分尺
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Application No.: US13616152Application Date: 2012-09-14
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Publication No.: US08878523B2Publication Date: 2014-11-04
- Inventor: Hirokazu Kobayashi , Osamu Kawatoko , Shozaburo Tsuji , Kenichi Nakayama
- Applicant: Hirokazu Kobayashi , Osamu Kawatoko , Shozaburo Tsuji , Kenichi Nakayama
- Applicant Address: JP Kawasaki
- Assignee: Mitutoyo Corporation
- Current Assignee: Mitutoyo Corporation
- Current Assignee Address: JP Kawasaki
- Agency: Rankin, Hill & Clark LLP
- Priority: JP2011-203743 20110916
- Main IPC: G01B7/14
- IPC: G01B7/14 ; G01D5/20

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.
Public/Granted literature
- US20130069637A1 INDUCTIVE DETECTION ENCODER AND DIGITAL MICROMETER Public/Granted day:2013-03-21
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