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. 19, 2005
Filed:
Aug. 21, 2001
Applicants:
Takashi Anamura, Tokyo, JP;
Setsuo Hosogai, Tokyo, JP;
Kunihiko Takahata, Osaka, JP;
Inventors:
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Toshin Denki Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H075/00 ;
U.S. Cl.
CPC ...
Abstract
Malfunction of an earth leakage breaker due to a lightning surge is prevented, and when a lightning arrester is short-circuited and damaged by a high-level lightning surge, a power supply short circuit is prevented. A contactan overcurrent detector sectionand a zero phase current transformerare disposed in order from a power supply side to a load side, and a lightning arresteris connected between the overcurrent detector sectionand the zero phase current transformer