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:
Mar. 31, 1981
Filed:
Mar. 23, 1978
Masami Kii, Amagasaki, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A circuit interrupter comprising a first pressure chamber for quickly increasing the pressure of an arc extinguishing gas therein by utilizing the energy of an electric arc established between a pair of separable contacts, and a second pressure chamber disposed around the first pressure chamber for releasing the arc extinguishing gas together with the high pressure gas upon the decrease of the arc current. The arc is extinguished by high pressure arc extinguishing gas released from the second pressure chamber. The first and the second pressure chambers are connected by a communication port having a check valve therein to increase the pressure of the arc extinguishing gas within the second pressure chamber.