Apparatus containing multiple sequentially used infrared heating zones for tubular articles
US10107438B2 · kind B2 · utility
2Cited by
16References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2012 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Aug 5, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2597/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An apparatus for heating an elongate tubular article, such as a heat shrinkable sleeve applied around a welded pipe joint during pipeline construction. The apparatus is in the form of a frame which can be disposed around the article, the frame having a heater device having both longitudinally disposed heating zones and radially disposed heating sectors, each of which can be independently controlled. Alternatively, or in combination, the apparatus can have an air circulation system. Also, a method for shrinking a heat shrinkable sleeve comprising use of said apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.