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:
Jul. 20, 1999
Filed:
Feb. 25, 1997
Tohru Nakagawa, Hirakata, JP;
Katsuhiko Asai, Toyonaka, JP;
Yoshihiro Ikemoto, Hirakata, JP;
Isao Tashiro, Hirakata, JP;
Abstract
A radial electromagnetic attraction stator of a magnetic bearing system is manufactured by forming laminated core pieces as divisions of a laminated core each having a unit number of pole teeth, winding wires around pole piece portions of the laminated core pieces with insulators interposed, assembling a predetermined number of the laminated core pieces wound with the wires and fixing joined portions of the laminated core pieces. This manufacturing method prevents spaces in which the wires are wound from being limited by adjacent pole teeth unlike the conventional integral laminated core, permits winding the wires in a maximum number of turns in open spaces and allows to obtain the radial electromagnetic attraction stator having a high space factor, thereby being capable of providing a magnetic bearing system having a high load capacity and usable as a bearing capable of enhancing performance of production appliances such as working appliance and vacuum pumps.