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:
Jan. 25, 1983
Filed:
Nov. 03, 1980
Gunther Matthaus, Spardorf, DE;
Joachim Ruffer, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A high voltage insulating bushing formed of wound insulating foils is provided with a double layer material interposed between preselected windings of the insulating foils. The double layer material is formed of insulating material which has been laminated with an electrically conductive material, such as aluminum, and serves to advantageously distribute the electric field potential throughout the insulator body. The double layer material is arranged so that the electrically conductive material faces inwardly toward a longitudinal axis of the insulator body. The edges of a double layer foil which are near the outer surface of the insulator body are folded inward to form an edge wherein the electrically conductive material is enclosed within the insulating layer. In some embodiments, voids formed between the insulating foils and the folded edges of the double layer material are filled with an insulating medium, such as SF.sub.6 gas.