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. 10, 2019
Filed:
Nov. 11, 2015
Thk Co., Ltd., Tokyo, JP;
Hitoshi Shibata, Tokyo, JP;
Hiroshi Kaneshige, Tokyo, JP;
Katsuya Fukushima, Tokyo, JP;
Masashi Sugiura, Tokyo, JP;
Koichiro Morita, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a linear motor that can exert a high propulsive force and reduce cogging. A stator has a plurality of core units in a stroke direction. Each of the core units has a first core having a first magnetic pole and a second magnetic pole, which is different in polarity from the first magnetic pole, coils wound around the first core, a second core having a third magnetic pole and a fourth magnetic pole, which is different in polarity from the third magnetic pole, and coils wound around the second core. The third magnetic pole faces the first magnetic pole, and the fourth magnetic pole faces the second magnetic pole. A movable element is sandwiched between the first magnetic poles and the third magnetic poles, and between the second magnetic poles and the fourth magnetic poles.