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. 18, 2009
Filed:
Jan. 11, 2005
Toru Shikayama, Fukuoka, JP;
Kenichi Sadakane, Fukuoka, JP;
Toru Shikayama, Fukuoka, JP;
Kenichi Sadakane, Fukuoka, JP;
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Abstract
A coreless linear motor and a canned linear motor that can significantly reduce an increase in surface temperature of a linear motor armature are provided. In a magnetic field system of a coreless linear motor, two rows of permanent magnetsare disposed on the opposite sides in a magnetic field yoke, and an armatureis disposed so that armature coilsandincluding a plurality of coil groups centrally wound in the magnetic field system having the two rows of permanent magnets are arranged in two rows. One end of the two rows of the armature coilsandin a direction perpendicular to a direction of a magnetic gap between the two rows of permanent magnets branches into two parts, and the other end is arranged back-to-back. Further, the substratefor connecting the coils is inserted into a gap between the two rows of the branching coilsand. The armature coilsandand the substrateare integrally formed and fixed by mold resin