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:
Sep. 14, 2004
Filed:
Nov. 01, 2002
Uwe Kaltenborn, Baden-Dättwil, CH;
Pal Kristian Skryten, Skien, NO;
ABB Research LTD, Zurich, CH;
Abstract
A fuse has a fuse element ( ) with a fusible conductor ( ) of a conductor material ( ) such as Ag, Cu or Al and is provided with doping points ( ) following one another at regular intervals. There, the conductor material ( ) has a directly adjoining layer of a first compound ( ) of the same with a doping material such as In or Ge. It forms mixed crystals which contain the conductor material ( ) and the doping material in a fixed stoichiometric ratio, such as for example Ag In, and is separated from said conductor material by a stable phase boundary. The doping points ( ) weaken the fusible conductor by lowering the melting point to below 250° C., so that arc formation rapidly occurs there when there are short-circuit currents, although its electrical resistance per unit of length is under some circumstances only a few percent greater than in the remaining region. The fusible conductor ( ) bears a continuous layer of a burn-up material ( ). It has an ignition temperature which is preferably lower than the melting point of the first compound ( ).