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:
Dec. 30, 1980
Filed:
Jun. 27, 1978
Masami Kii, Amagasaki, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A circuit interrupter comprises a pair of contacts movable relative to one another into a separated or spaced apart position in a chamber containing a fluid for arc extinction, and includes a pressure chamber for storing the fluid for arc extinction which is pressurized by arcing occurring in the space between separating contacts. Structure is provided in association with the pressure chamber for preliminarily pressurizing the fluid depending upon the extent of movement of the contacts in a separating direction prior to separation thereof, and wherein an outlet from the chamber is opened after the contacts have separated, and the fluid for arc extinction in the pressure chamber is thus discharged through the arc space and the arc is interrupted by puffing of the fluid through the arc for arc extinction.