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:
Apr. 04, 1989
Filed:
Jul. 27, 1987
Applicant:
Inventors:
Ichirou Arinobu, Fukuyama, JP;
Yoshihiro Hatakeyama, Fukuyama, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ; H02H / ;
U.S. Cl.
CPC ...
361 97 ; 361 93 ;
Abstract
A circuit breaker has a phase selecting circuit for selecting one phase among plural phases, in which the largest current flows. After selecting the largest phase, the judgement whether an accidental overcurrent flows or not in executed by using only output signals from the selected largest phase.