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:
Jul. 16, 2019
Filed:
Feb. 21, 2018
Hitachi, Ltd., Tokyo, JP;
Toshiaki Sakuyama, Tokyo, JP;
Ryoichi Shiobara, Tokyo, JP;
Hajime Urai, Tokyo, JP;
Makoto Hirose, Tokyo, JP;
Masanao Terada, Tokyo, JP;
Takahiro Nishimura, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To provide a gas circuit breaker designed to achieve further improvement in interruption performance for a small to medium current. The gas circuit breaker according to the present invention includes: an operation mechanism; a heat puffer chamber; a machine puffer chamber; a release valve; a movable main contactand movable arc contact; a stationary main contactand stationary arc contact; a movable-side leading conductor; and a stationary-side leading conductor, and features: a separation cylinderfor radially partitioning the heat puffer chamber; an inner circumferential flow pathformed on an inner circumferential side of the separation cylinder; and a check valvefor opening or closing a communication hole