Electrically heated fluid carrying conduit having integrated heating elements and electrical conductors
US5544275A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1993 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L53/35
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated heated conduit includes an inner conduit through which a fluid may be transferred. The inner conduit may also serve as a first electrical conductor, or an insulator may be provided on the outer surface of the conduit and a first electrical conductor may then be formed about the outer surface of this insulator. A polymeric, self-regulating heating element is provided on the outer surface of the first conductor. A second conductor is provided about the outer surface of the heating element to complete a current path across the heating element. The entire assembly may optionally be sheathed in an electrically and/or thermally insulating outer layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.