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. 30, 1987
Filed:
Nov. 25, 1985
Applicant:
Inventors:
Elie Belbel, Epinay sur Seine, FR;
Christian Blanchard, Nanterre, FR;
Andre Haury, Le Raincy, FR;
Michel Lauraire, Courbevoie, FR;
Assignee:
La Telemecanique Electrique, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200151 ; 2001 / ;
Abstract
A switch in which a screen inserted between the contacts shears the opening arc. The screen is associated with a sheath that surrounds a contact support and slides on the latter when the gas pressure it is subjected to causes it to move at a velocity which is a function of the energy of the arc. The switch is applicable in particular to protective apparatus designed to limit fault current or breaking devices in which steady-state current is fairly high.