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. 09, 2010
Filed:
Mar. 27, 2008
Applicants:
Toshihiko Sasaki, Yokohama, JP;
Kazuo Watanabe, Yokohama, JP;
Katsumi Ishikawa, Yokohama, JP;
Inventors:
Assignee:
Wako Giken Co., Ltd, Yokohama, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 41/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A movable member is moved in a preset direction in a linear motor. A characteristic-change position-detecting unit detects a position where the magnetic characteristic of the magnets has abruptly changed. The position detected is used as an origin-setting reference position. A reference position for the absolute position of the magnetic linear encoder is set based on the reference position.