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. 02, 2004
Filed:
Sep. 26, 2003
Kunitake Matsushita, Shizuoka-ken, JP;
Hiroshi Sano, Shizuoka-ken, JP;
Toshihiko Nagata, Shizuoka-ken, JP;
Minebea Co., Ltd., Nagano-Ken, JP;
Abstract
A low-profile stepping motor comprises: a first stator unit including first upper and lower stator yokes each having a plurality of pole teeth which are formed along its semicircular inner circumference, and a first coil unit fixedly sandwiched between the first upper and lower stator yokes; a second stator unit including second upper and lower stator yokes formed as one piece integrally with the first upper and lower stator yokes, respectively, and each having a plurality of pole teeth which are formed along its semicircular inner circumference, and a second coil unit fixedly sandwiched between the second upper and lower stator yokes; a rotor assembly rotatably disposed in a circular open space defined by the pole teeth of the first and second stator units; and a spacer block disposed between the upper and lower stator yokes and adapted to surround the first and second coil units and the pole teeth.