Sump liner and method of installation
US5870871A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1997 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Mar 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49746
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention includes repair of an existing underground sump without the need for costly and time consuming excavation. A plurality of liner-forming pieces are placed inside the underground sump to create a liner preferably substantially conforming to the interior dimensions of the sump. The pieces are joined together to form a unitary containment shell by first taping and then using fiberglass cloth and fiberglass resin. A layer of gel-coat is applied to the surface of the shell to create a fluidtight containment chamber within the sump. Some of the liner-forming pieces can have openings formed therein to accommodate the pipe entries corresponding to those in the sump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.