Method of forming a conduit
US8709187B2 · kind B2 · utility
25Cited by
28References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2008 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Dec 15, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of continuously forming heated conduit includes performing a tape for winding onto a spiral pipeline former. At least one conductor is positioned adjacent to the centerline of and parallel with a thin polymer ribbon. The ribbon is folded in half to encapsulate the conductors. The folded ribbon is thermally welded to itself. The folded, welded, ribbon is passed through a creaser, which forms a crease midway across the folded ribbon. The creased pre-formed ribbon is formed into a conduit in a continuous process on a spiral pipeline former.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.