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:
Feb. 06, 2018
Filed:
Aug. 20, 2015
Applicant:
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Inventors:
Assignee:
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 41/03 (2006.01); H02K 1/17 (2006.01); H02K 7/09 (2006.01);
U.S. Cl.
CPC ...
H02K 41/031 (2013.01); H02K 1/17 (2013.01); H02K 7/09 (2013.01);
Abstract
A linear motor includes a mover movable in a first direction and a stator. A yoke includes a pair of back yokes provided opposite to each other so as to sandwich the mover in a second direction perpendicular to the first direction. A plurality of field magnets are provided on an inner lateral surface of each of the pair of back yokes in the first direction. A pair of auxiliary magnets are provided (i) on end lateral surfaces of the back yokes and (ii) in the vicinity of the field magnets at the extreme end provided in the back yoke. A magnetic member is provided to surround the pair of auxiliary magnets.