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:
Jan. 03, 1984
Filed:
Apr. 02, 1981
Applicant:
Inventors:
Georges Bernard, Saint-Egreve, FR;
Serge Olive, St. Paul de Varces, FR;
Francesco Scarponi, Brignoud, FR;
Assignee:
Merlin Gerin S.A., Grenoble, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ;
Abstract
The invention concerns a rotating arc switch using a permanent magnet (38) arc blow-out. The permanent magnet is housed inside the fixed contact (16) and is thermally and electrically isolated from it by an insulating layer (46). The permanent magnet (38) is placed against the annular contact (36) surface, very close to the breaking zone, and has a cavity (40) opposite the central opening of the annular surface (36). The magnetic blow-out is combined with a pneumatic blow out by escape of the warmed gases towards an expansion chamber (36).