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:
Aug. 09, 2016
Filed:
May. 01, 2012
Kazuyori Tahata, Tokyo, JP;
Hiroki Ito, Tokyo, JP;
Kunio Kikuchi, Tokyo, JP;
Kenji Kamei, Tokyo, JP;
Yusaku Horinouchi, Tokyo, JP;
Masaki Hiratsuka, Tokyo, JP;
Sho Tokoyoda, Tokyo, JP;
Toshinobu Takeda, Tokyo, JP;
Kazuyori Tahata, Tokyo, JP;
Hiroki Ito, Tokyo, JP;
Kunio Kikuchi, Tokyo, JP;
Kenji Kamei, Tokyo, JP;
Yusaku Horinouchi, Tokyo, JP;
Masaki Hiratsuka, Tokyo, JP;
Sho Tokoyoda, Tokyo, JP;
Toshinobu Takeda, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
A direct-current circuit breaker includes a switching unit inserted in the direct-current line; and a commutation circuit that includes a series circuit including a first current-limiting element and an interrupting unit that forms a current zero point by superimposing a resonance current on a direct current flowing in the direct-current line and interrupts the direct current at the current zero point, that is connected in parallel with the switching unit, and that becomes a flow path for the direct current after the switching unit is opened, wherein current interruption is performed by the interrupting unit after the switching unit is opened.