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:
Jun. 19, 2001
Filed:
Sep. 23, 1999
Toshiyasu Takura, Hino, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
A polyphase motor driving apparatus having a receiving function for receiving a pulse signal from a position detector, which is connected to the rotary shaft of a rotor (having a plurality of poles) of a polyphase motor provided with a stator having a plurality of poles and which generates the pulse signal every time the rotor rotates by 360°/n, where n is a positive integer; and a supply function for judging the present position of the rotor every time one pulse of the pulse signal is received and for supplying a polyphase current to the polyphase motor at a timing based on the judgment, thereby switching the excitation phase of the polyphase motor and rotating the rotor.