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. 16, 2016
Filed:
Dec. 16, 2011
Applicants:
Hiroyoshi Komatsu, Tokyo, JP;
Junichi Nomura, Tokyo, JP;
Manabu Souda, Tokyo, JP;
Inventors:
Assignee:
Toshiba Mitsubishi-Electric Industrial Systems, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/00 (2006.01); H02H 3/00 (2006.01); H02H 7/12 (2006.01); H01H 9/54 (2006.01); H02J 3/38 (2006.01); H02M 5/458 (2006.01);
U.S. Cl.
CPC ...
H02H 7/1216 (2013.01); H01H 9/542 (2013.01); H02J 3/386 (2013.01); H02M 5/4585 (2013.01); Y02E 10/763 (2013.01);
Abstract
An object is to obtain a low-frequency circuit breaker which has a simple configuration and a small size as a whole and is advantageous in view of costs. There is provided a low-frequency circuit breaker, in which a semiconductor switch and a mechanical switch are connected in parallel with each other. The semiconductor switch is configured by connecting a thyristor and a thyristor in anti-parallel with each other. These members are controlled by the circuit breaker control circuit.