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. 06, 1990
Filed:
Dec. 15, 1988
Applicant:
Inventors:
Norbert Asdollahi, Witten, DE;
Karl Poerschke, Sprockhovel, DE;
Klaus Stark, Witten, DE;
Claus Friedrich, Gevelsberg, DE;
Assignee:
Wickmann-Werke GmbH, Witten, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
337273 ; 337199 ;
Abstract
A sub-miniature fuse having a fusible conductor which will fuse under an over-current condition within a pressure-tight chamber. A metal surface is positioned near the fusible conductor within the chamber and is formed and positioned relative to the fusible conductor so that during the switching off of the fuse, any arc created between the fused ends jumps over to the metal surface. Thus, at least one secondary arc is created which burns against the metal surface as a shunt line. By melting a part of the metal surface, sufficient heat is absorbed that the secondary arc is quenched.