Secondary containment system using flexible piping
US5490419A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Jul 27, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6991
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sump-riser performing as a collection sump, as a riser for the corresponding tank and as a means for secondary containment for the tank's submersible pump, manway, and fittings. The sump-riser comprises a generally cylindrical sump base with an upright annular lip extending upwardly from an upper support surface; an extension riser including a lower annular riser lip which fits over and round the lip of the sump base; a cover for the extension riser; and an access or observation lid. The riser extension is detachable or removable from the sump base and may be inverted and inserted into the sump base for compact shipping. Score lines may be provided on the riser extension to serve as cutting guides for proper sizing and the sump base may be multi-sided to provide flat walls for accurate hole drilling for pipe and conduit entry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.