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. 10, 2009
Filed:
Jun. 05, 2003
Sergio Belli, Livorno, IT;
Fabrizio Donazzi, Milan, IT;
Alberto Bareggi, Milan, IT;
Cesare Bisleri, Cassina De Pecchi, IT;
Carlo Marin, Vigevano, IT;
Sergio Belli, Livorno, IT;
Fabrizio Donazzi, Milan, IT;
Alberto Bareggi, Milan, IT;
Cesare Bisleri, Cassina De Pecchi, IT;
Carlo Marin, Vigevano, IT;
Prysmian Cavi e Sistemi Energia S.R.L., Milan, IT;
Abstract
A cable for use in a predetermined voltage class, has a conductor; an insulating layer surrounding the conductor, the insulating layer having a thickness selected to provide a predetermined electrical stress when the cable is operated at a nominal voltage in said predetermined voltage class; and a protective element around the conductor having a thickness and mechanical properties selected to provide a predetermined impact resistance capability, the protective element having at least one expanded polymeric layer. The insulating layer thickness and the protective element thickness are selected in combination to minimize the overall cable weight while preventing a detectable insulating layer damage upon impact of 50 J energy. A method for designing a cable is also disclosed.