Passageway lining material
US4836715A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1372
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The tensile strength, and particularly the ability to resist changes in cross-sectional configuration, of a rigidifiable-in-situ passageway lining material comprising a fibrous body with a settable resin forming a part thereof, the fibers in that fibrous body having their lengths generally extending transversely to the plane thereof, is enhanced by incorporating thereinto a reinforcing layer formed of fibers with their lengths generally extending in the plane of the lining, and preferably circumferentially when the lining defines a tube. A pair of such reinforcing layers may be provided, each near a different surface of the lining, thereby to simultaneously protect against buckling and ovality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.