Secondary containment flexible underground piping system
USRE37114E · kind E · reissue
4Cited by
239References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC —)General
Abstract
The secondarily contained piping system having two spaced access chambers that are interconnected by a secondary containment pipe to provide a sealed arrangement for a flexible fluid supply pipe, the ends of which are disposed within the access chambers. The outer flexible pipe is sized to permit the insertion and/or removal of the primary flexible pipe during installation and testing of the same and after backfilling of the trench within which the pipe is disposed, the outer flexible tubing partially collapses to engage and prevent relative movement between the two pipes while providing a flow path thereinbetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.