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:
Jun. 10, 1986
Filed:
May. 06, 1985
Gianpietro Talpo, Bergamo, IT;
Sace S.p.A. Costruzioni Elettromeccaniche, Bergamo, IT;
Abstract
A high-voltage electric switch is proposed comprising an arc extinguishing device using self-generation of a quenching fluid pressure. Inside a container there is formed a compression chamber surrounded by fixed main contacts cooperating with mobile main contacts carried by a movable rod. Movable to a limited extent by said rod during its closure travel against elastic means, there are disposed in said chamber a first pair of arcing contacts for forming an auxiliary arc the main purpose of which is to generate a pressure in the quenching fluid contained in the compression chamber, and a second arcing contact which cooperates with the rod in order to form a main interruption arc which is blasted at the appropriate time by the thus compressed fluid, the arcing contacts being in series with each other and in parallel with the main contacts.