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:
Jan. 10, 2017
Filed:
Feb. 03, 2014
Hitachi, Ltd., Chiyoda-ku, Tokyo, JP;
Yuji Kaneko, Tokyo, JP;
Noriyuki Yaginuma, Tokyo, JP;
Daisuke Nomura, Tokyo, JP;
Makoto Hirose, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A gas circuit breaker is configured by comprising a tank filled with arc extinguishing gas, a pair of fixed side arc contact and moving side arc contact in the tank, a puffer chamber formed with a puffer cylinder including the moving side arc contact at its end and a fixed piston, and an insulating nozzle, attached to the end of the puffer cylinder, surrounding the moving side arc contact, that forms a flow channel to guide arc extinguishing gas from the puffer chamber to the contacts. A puffer cylinderhas a cylindrical memberat a breaker side end, an end of the insulating nozzleis provided in the cylindrical member. And the gas circuit breaker is configured by further comprising a hollow moving side main contactat a breaker side end of the cylindrical member, a pressing metal fittingto engage an insulating nozzlein the hollow part of the moving side main contact