| US 7,469,470 B2 | ||
| Method of making electrical power cable | ||
| Daniel Cusson, Saint-Bruno-de Montarville (Canada); Paul Cinquemani, Lexington, S.C. (US); Paolo Veggetti, Monza (Italy); Marco Frigerio, Dolzago (Italy); and Alberto Bareggi, Milan (Italy) | ||
| Assigned to Prysmian Cavi e Sistemi Energia S.R.L., Milan (Italy) | ||
| Filed on Nov. 16, 2006, as Appl. No. 11/600,029. | ||
| Application 11/600029 is a division of application No. 11/020196, filed on Dec. 27, 2004, granted, now 7,166,802. | ||
| Prior Publication US 2007/0056762 A1, Mar. 15, 2007 | ||
| Int. Cl. H01R 43/00 (2006.01); H01B 13/00 (2006.01) | ||
| U.S. Cl. 29—825 [29/828; 156/47; 156/48; 156/50] | 9 Claims |
| 1. A method of making an electrical cable comprising:
providing at least two cores to form an assembled element;
expanding a polymeric material with an exothermic foaming agent;
extruding the expanded polymeric material in a layer around the assembled element, the expanded material having a drawdown
ratio of about 1.4:1 to about 1.9:1 and collapsing onto the assembled element;
applying a metallic armor around the expanded polymeric material, the armor being substantially circular and creating a plurality
of voids between the armor and the expanded polymeric material;
extruding an outer jacket on the metallic armor.
|