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:
Sep. 26, 2017
Filed:
Dec. 18, 2013
Murata Machinery, Ltd., Kyoto-shi, Kyoto, JP;
Tetsuya Shimizu, Kyoto, JP;
Hideki Kubo, Kyoto, JP;
Satoshi Hanaka, Kyoto, JP;
Tatsuo Ota, Kyoto, JP;
Shogo Terada, Kyoto, JP;
MURATA MACHINERY, LTD., Kyoto, JP;
Abstract
In a linear displacement sensor, two magnets with different polarities define one pitch of a magnetic scale. kn (k is a natural number greater than or equal to 2, n is a natural number greater than or equal to 1) sensor units configured to output a plurality of signals whose period is one pitch and whose phases with respect to the pitch are different are arranged along the magnetic scale in a one-pitch segment. Periodic errors with n periods per pitch of the sensor units are canceled out by averaging the phases from the kn sensor units.