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:
Aug. 22, 1978
Filed:
Sep. 01, 1976
Mats Gunnar Olsson, Stockholm, SE;
Carl Ove Tollerz, Bromma, SE;
Sven Gunnar Wretemark, Stockholm, SE;
Telefonaktiebolaget L M Ericsson, Stockholm, SE;
Abstract
A cable for carrying high voltage has encompassed on its metallic conductor core with an inner layer of semiconducting material. An insulation layer encompasses this semiconducting layer and is in turn encompassed by an outer semiconducting layer. This outer semiconducting layer is strongly bonded to the underlying insulation layer and its outer surface resistivity is selected to be within the range of 10.sup.7 - 10.sup.9 ohm/square. Such resistivity range equalizes the voltage distribution within the cable jacket and also facilitates splicing cable ends and terminating the cable as the outer semiconducting layer need not and in fact cannot be readily removed.