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:
Feb. 20, 2018
Filed:
Mar. 27, 2013
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Hajime Urai, Tokyo, JP;
Yasuaki Aoyama, Tokyo, JP;
Hiroaki Hashimoto, Tokyo, JP;
Katsuhiko Shiraishi, Tokyo, JP;
Tatsuro Kato, Tokyo, JP;
Ayumu Morita, Tokyo, JP;
Toshiaki Rokunohe, Tokyo, JP;
Yoichi Oshita, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The invention is intended to provide a circuit breaker or a circuit breaker operating method enabling a current interruption action to be performed efficiently. A circuit breaker is characterized in that includes a fixed contact and a movable contact that comes in and goes out of contact with the fixed contact; a main circuit conductor that is electrically connected to the fixed contact and the movable contact; an operating mechanism including a mover configured by concatenating permanent magnets or magnetic materials alternately having opposite N and S magnetic polarities along the direction of motion axis of the movable contact and magnetic poles disposed to face the N and S magnetic polarities of the mover and wound with windings; a current detector that detects a current flowing through the main circuit conductor; and a control device that varies the amount of a current to be supplied to the windings of the magnetic poles, depending on a current value detected by the current detector.