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:
Aug. 01, 2017
Filed:
Jun. 04, 2015
Applicant:
Dmg Mori Seiki Co., Ltd., Yamato-Koriyama, Nara, JP;
Inventors:
Assignee:
DMG MORI SEIKI CO., LTD., Yamato-Koriyama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/16 (2006.01); G01D 5/14 (2006.01); G01D 5/244 (2006.01);
U.S. Cl.
CPC ...
G01D 5/16 (2013.01); G01D 5/145 (2013.01); G01D 5/24438 (2013.01);
Abstract
A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element. At least two magnetic detecting elements-and-are provided to detect leakage magnetism from a scalehaving a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements-and-are disposed side by side in a direction y perpendicular to a direction x of scanning the scaleand also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale