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. 11, 1998
Filed:
Jan. 17, 1996
Eisaku Mizufune, Hitachi, JP;
Yukio Kurosawa, Hitachi, JP;
Katsuichi Kashimura, Hitachi, JP;
Osamu Koyanagi, Hitachi, JP;
Yoshihito Asai, Hitachi, JP;
Kogi Ishikawa, Mito, JP;
Ken'ichi Natsui, Hitachi, JP;
Masanori Tsukushi, Hitachi, JP;
Makoto Yano, Mito, JP;
Goro Daimon, Hitachi, JP;
Kenji Tsuchiya, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A puffer type gas breaker is provided, in which high-temperature gas, heated by an electric arc produced immediately after a large current is broken, is quickly discharged to enhance inter-pole dielectric performance. A fixing portion for fixing an arc contact is provided in a cylindrical exhaust pipe for exhausting the high-temperature gas heated by an electric arc produced between poles immediately after a large current is broken. A rectifying member or members is provided in the fixing portion of the cylindrical exhaust pipe. An exhaust port or ports is formed in the fixing portion of the cylindrical exhaust pipe, and a shield is disposed around the outer periphery of the exhaust port or ports.