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. 07, 2018
Filed:
Mar. 17, 2014
Hitachi Metals, Ltd., Tokyo, JP;
Masahiro Masuzawa, Takasaki, JP;
Masahiro Mita, Takasaki, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
An object is to provide a linear motor in which even when the overall length of the linear motor is long, the amount of magnets to be employed does not increase and hence size reduction and weight reduction of a stator is realized. A linear motor comprising a statorand a movable elementprovided with a coilis characterized in that: the statorincludes two plate-shaped parts elongated in a moving direction of the movable elementand the two plate-shaped parts are provided facing each other so as to be magnetically linked in such a manner that a movement domain of the movable elementis located in between; in each of surfaces facing each other in the two plate-shaped parts, a plurality of tooth partsandare aligned in the moving direction such that the tooth parts() of one plate-shaped part and the tooth parts() of the other plate-shaped part are located in a staggered manner; in the movable element, inside the coil, two magnetsand three yokesare alternately arranged along the moving direction; and the two magnetsandare magnetized along the moving direction and the magnetization directions are opposite to each other.