Flexible tubular conduit with heating means and stiffening means for transporting pressurized fluids
US5428706A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1992 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Mar 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L53/38
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A tubular conduit for the transport of fluids under pressure includes a flexible outer tubular sheath, a group of stiffening reinforcements, a flexible inner tubular sheath or tube, and if applicable at least one intermediate flexible tubular sheath, and a heater in the form of electrically conductive wires, connected to an electric power source and releasing heat by Joule effect, said wires being arranged on the length of the conduit. Also a plurality of electrically conductive wires are arranged in at least one layer in which the wires are parallel to one another and spirally wound around the axis of the conduit, the layers of conductive wires being placed between two flexible tubular sheaths of the conduit, the conductive wires being noncontiguous to one another and each resting by surface contact on the underlying tubular sheath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.