Patent · US Active

Heatable line pipe and a method for producing the heatable pipe

US10094505B2 · kind B2 · utility

1Cited by

4References

9Claims

0Family size

Assignees

EVONIK DEGUSSA GMBH · DE
VOSS Automotive GmbH · DE

Inventors

Rainer Goering · Borken, DE
Michael Boeer · Olfen, DE
Juergen Franosch · Marl, DE
Joerg Westmeier · Krefeld, DE
Otfried Schwarzkopf · Magstadt, DE
Daniel De Beer · Leersum, NL

Key dates

Filing date	May 13, 2013
Grant date	Oct 9, 2018
Priority date	—
Expiry date	Apr 6, 2036

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01N2610/10
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A heatable line pipe useful for diesel fuel systems and fuel cell systems is provided. The heatable line pipe comprises in order from an inside of the pipe: a) an electrically insulating inner layer; b) a first electrically conductive layer; c) at least two current leads wound spirally around the first electrically conductive layer; d) a second electrically conductive layer over the at least two current leads forming a surface; and e) an outer cladding of an electrically insulating plastic material. The thickness of the second electrically conductive layer is 0.1 to 1.5 mm, and the at least two current leads form wave peaks in the surface of the second electrically conductive layer. The line pipe has the advantage that a fall in heating performance over the lifetime is effectively prevented.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.