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:
Jul. 15, 2003
Takashi Ando, Kiryu, JP;
Yasuaki Moteki, Kiryu, JP;
Yuji Takagai, Kiryu, JP;
Toshimi Abukawa, late of Kiryu, JP;
Sachio Hatori, Kiryu, JP;
Makoto Ochiai, Kiryu, JP;
Japan Servo Co., Ltd., Tokyo-to, JP;
Abstract
A PM-type electric rotating machine comprises a rotation axis, a rotor that rotates together with the rotation axis and a stator that rotatably supports the rotation axis. The rotor has a closed-end-cup-shaped holder that is mounted at one end of the rotation axis and a permanent magnet fixed on an inner surface of a cylindrical portion of the holder. The stator has a housing bush that supports the rotation axis in an axis hole formed through the center of the housing bush, twelve stator cores that are radially mounted around the housing bush to face the outer tip ends thereof to the permanent magnet with an air gap, and coils that are wound around the stator cores via insulators. The inner base portions of the stator cores are connected to one another with pressure so as to form a ring-shaped yoke by mounting the stator cores around the housing bush.