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:
Dec. 15, 1998
Filed:
May. 19, 1995
Applicant:
Inventors:
Claudio Bosisio, Brembate Sotto, IT;
Giulio Tuci, Milan, IT;
Assignee:
Pirelli Cavi S.p.A., , IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
174 / ; 1741 / ;
Abstract
Electrical cable for high and very high voltages includes a plurality of conductors, at least one semiconductive layer, a stratified insulation impregnated with an insulating fluid and an external metal sheath. The insulation is constituted by a paper/polypropylene/paper laminate, wherein polypropylene has been subjected to a treatment such as to allow the laminate to swell up by less than 5% after immersion in decylbenzene at 100.degree. C. for at least 3 days.