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:
Nov. 09, 1982
Filed:
Jul. 01, 1981
John E Zlupko, Marlton, NJ (US);
Ben L Damsky, Philadelphia, PA (US);
General Electric Company, Philadelphia, PA (US);
Abstract
This current-limiting fuse comprises a fusible element having a predetermined location at which an arc will be initiated when prolonged overcurrents of relatively low value have persisted for a predetermined duration. For increasing the arc voltage developed by said arc, an electrical insulating member is disposed about the fusible element in a position where at least a portion of the arc will burn within the insulating member and cause vapors to be evolved from the material of the insulating member. The insulating member is of a material that evolves substantially no vapors or gases at the temperatures reached by the insulating material prior to arc-initiation during prolonged overcurrents of up to one hour in duration. This material is a baked material, a major portion of which is hydrated aluminum silicate including water of hydration that is released only at temperatures in excess of those attained by the insulating material during prolonged overcurrents as long as one hour.