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:
Nov. 12, 2002
Filed:
Dec. 16, 1997
Kazuya Aihara, Niigata-ken, JP;
Terumi Shimano, Niigata-ken, JP;
Eietsu Sato, Niigata-ken, JP;
Yukihide Yamada, Niigata, JP;
Koichi Yokoyama, Niigata-ken, JP;
Toru Ohshima, Niigata-ken, JP;
Hidetaka Fujita, Niigata-ken, JP;
Toshihiro Sekiguchi, Niigata-ken, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A circuit breaker having a safe construction, where no electrically charged portions are exposed in an accessory installation area or anywhere outside a main circuit case even if a cover of the circuit breaker is opened in a live condition. In order to achieve above object, the circuit breaker of this invention includes the main circuit case made of an insulating material, and an opening-closing trip mechanism disposed outside of the main circuit case and electrically insulated from the main circuit. According to this invention, a circuit breaker capable of eliminating the risk of an electric shock, thereby providing the excellent safety can be obtained.