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:
Apr. 12, 1988
Filed:
Mar. 18, 1987
Applicant:
Inventors:
Georges Bernard, Saint-Egreve, FR;
Pierre Leclercq, Moirans, FR;
Serge Olive, St. Paul-De-Varces, FR;
Assignee:
Merlin Gerin, Grenoble Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ; 2001 / ; 2001 / ;
Abstract
An electrical circuit breaker with self-expansion and rotating arc insulated with SF6 comprises a fixed arcing contact secured to the front face of a magnetic blow-out coil. An electrode is electrically insulated from the fixed arcing contact and covers the front face being connected to the opposite end of the coil by a branch circuit. The electrode is arranged to pick up a fraction of the arcing current, so that the magnetic field generated in the breaking zone by the coil remains appreciably constant when the value of the short-circuit current exceeds a predetermined threshold.