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:
Feb. 01, 1977
Filed:
Apr. 16, 1975
Applicant:
Inventors:
Richard M Korte, West Chester, PA (US);
John E Zlupko, Marlton, NJ (US);
Assignee:
General Electric Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2001 / ; 2001 / ;
Abstract
This arc chute comprises an arc-confining portion of an electric insulating material comprising the heat and pressure reacted thermoset product of a mixture of chrysotile asbestos, orthophosphoric acid, and silica sand. The silica sand is present in the mixture in an amount of between 23.5 and 30.5 percent by weight of the mixture. The insulating material prior to operation of the arc chute has a surface layer formed by subjecting the pre-existing surface of the material to arc-plasma flame treatment that converts the material at said surface to an amorphous fused material, the major proportion of which is silica.