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:
May. 12, 1987
Filed:
Apr. 29, 1986
Satoru Yanabu, Machida, JP;
Hitoshi Mizoguchi, Yokohama, JP;
Hisatoshi Ikeda, Zushi, JP;
Katsumi Suzuki, Yokohama, JP;
Mitsuru Toyoda, Yokohama, JP;
Edmond Thuries, Villeur Banne, FR;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Alsthom, Paris, FR;
Abstract
A puffer type gas insulated circuit breaker has releasably engaging stationary and movable arc contacts contained in a vessel filled with an arc extinguishing gas. An operation rod serving as a supporting member of the movable arc contacts has openings and helps define a puffer chamber. In the breaker, gas is pressurized by an arc generated between said stationary arc contacts and said movable arc contacts in an initial breaking phase, this gas being taken into the puffer chamber. The holes are used as a heat exhaust passage.