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. 26, 1989
Filed:
Mar. 22, 1988
Frederik H Kreuger, Delft, NL;
Antonius M Van De Laar, Wagenberg, NL;
N.K.F.KABEL B.V., Delft, NL;
Abstract
Multi-conductor high voltage cable, in particular a three-conductor cable, each conductor having an extruded polyolefin conductor insulation, said cable further comprising an extruded polyolefin belt insulation surrounding all insulated conductors and an electrically conducting sheath, surrounding the belt insulation. According to the present invention the conductor insulation of each conductor is surrounded by at least one tape or layer of material comprising cells or cavities and/or at least one tape or layer of material comprising cells or cavities is applied between the belt insulation and all insulated conductors. Preferably said tape or layer is formed by swelling tape.