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. 03, 2001
Filed:
Sep. 04, 1997
Kosei Nakamura, Yamanashi, JP;
Michi Masuya, Yamanashi, JP;
Hisashi Maeda, Yamanashi, JP;
Yohei Arimatsu, Yamanashi, JP;
Fanuc Ltd., Yamanishi, JP;
Abstract
A reactor (,) and a switch (,) are interposed in parallel between U-phase, V-phase and W-phase on a power source side (,) and U, V and W terminals on a motor side (,). A changeover switch ),) is interposed between Z, X and Y terminals on the motor side (,) and the U, V and W terminals on the motor side (,). When the switch (,) is set to OFF, the changeover switch (,) is set to ON, and the switch (,) is set up so as to interconnect Z, X and Y terminals, windings of the motor are set up in the form of Y-connection, so that the motor and a power source are connected directly to each other. On the other hand, when the changeover switch (,) is switched over to OFF, and the switch (,) is set up so as to interconnect Z, X and Y terminals to the U, V and W terminals, the windings of the motor are set up in the form of &Dgr;-connection, so that the motor and the power source are connected together through the reactor (,).