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. 10, 2008
Filed:
Feb. 13, 2004
Toshiyuki Amagasa, Kiryu, JP;
Takeshi Ikeda, Kiryu, JP;
Mikihito Shimoyama, Kiryu, JP;
Hideaki Hakoda, Kiryu, JP;
Yasuhiro Nagahara, Kiryu, JP;
Toshiyuki Amagasa, Kiryu, JP;
Takeshi Ikeda, Kiryu, JP;
Mikihito Shimoyama, Kiryu, JP;
Hideaki Hakoda, Kiryu, JP;
Yasuhiro Nagahara, Kiryu, JP;
Mitsuba Corporation, Gunma, JP;
Abstract
A motor speed, duty, and power source voltage are detected (steps Sto S). Referring to a load point map, a load point value is obtained (steps Sand S). The load point map is created with the motor speed, duty, and power source voltage taken as parameters, and is corrected in accordance with atmospheric temperature of the motor. After the load point value is obtained, the value is accumulated (step S). The accumulated point value and a predetermined threshold value are compared with each other (step S). If the accumulated point value exceeds the threshold value, an overloaded state is determined and the accumulated point value is stored (step S). Thereafter, the motor is stopped.