Pipe liners and the installation thereof
US10359143B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2597/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A pipe liner has an elongate duct of thin laminated thermoplastic layers and remains relatively flexible and folded to a flat form. In this form, opposing sides of the duct are pressed into close proximity aided by folding of the duct, so the liner can be stored efficiently. In use, the liner is inserted into a pipe. The liner is subsequently heated and pressed against the inner surface of the pipe to form a close fit. Once the liner cools, it sets in place providing a close fitting pipe lining. In order to ensure adequate and even heating of the pipe liner during installation, heating is provided within the liner. The heating may comprise: a plurality of conductive filaments; electromagnetic susceptor material; or a plurality of magnetic particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.