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. 15, 2015
Filed:
May. 03, 2012
Rainer Goering, Borken, DE;
Andreas Dowe, Borken, DE;
Karl Kuhmann, Duelmen, DE;
Maximilian Gruhn, Marl, DE;
Juergen Franosch, Marl, DE;
Rainer Goering, Borken, DE;
Andreas Dowe, Borken, DE;
Karl Kuhmann, Duelmen, DE;
Maximilian Gruhn, Marl, DE;
Juergen Franosch, Marl, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
A flexible pipe which can be heated efficiently, and may therefore be used for conveying oil in cold regions, is provided. The pipe comprises in order from inside to outside: an interior lining; a wound tape; and at least one reinforcement layer. The wound tape contains a first exterior layer of a plastics molding composition that is not electrically conductive; an intermediate layer of an electrically conductive plastics molding composition; and a second exterior layer of a plastics molding composition that is not electrically conductive. A volume resistivity to IEC 60093 of the intermediate layer is in the range from 10to 10Ωm, and the intermediate layer comprises at least two metallic conductors embedded into the plastic molding composition along an entire length of the tape in such a way that, the two conductors do not touch one another.