Environmentally safe underground piping system
US5297896A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1992 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Mar 25, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/2892
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An environmentally safe underground piping system for liquid fuels and chemicals which interconnects an underground liquid storage tank to one or more above ground liquid dispensing units, that provides a complete secondary containment system for the entire primary liquid supply piping system. The piping systems employs one tank access chamber interconnected to one or more dispenser access chambers by a double walled pipe. The double wall pipe provides an interstitial space for gravity flow of any leaking liquids, from any point in the primary liquid supply piping system, to an access chamber, which also serves as a liquid collection sump, for purposes of leak detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.