Secondary containment leak prevention and detection system and method
US7225664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2005 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Oct 13, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D7/78
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pump housing that contains a pump that draws fuel from an underground storage tank containing fuel to deliver to fuel dispensers in a service station environment. The pump is coupled to a double-walled fuel pipe that carries the fuel from the pump to the fuel dispensers. The double-walled fuel piping contains an inner annular space that carries the fuel and an outer annular space that captures any leaked fuel from the inner annular space. The outer annular space is maintained through the fuel piping from the pump to the fuel dispensers so that the outer annular space can be pressurized by a pump to determine if a leak exists in the outer annular space or so that fuel leaked from the inner annular space can be captured by a leak containment chamber in the pump housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.