Secondary containment system
US5494318A · kind A · utility
Inventors
Key dates
| Filing date | Dec 15, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Dec 15, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/605
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A secondary containment piping system is composed of a plurality of modules of concentric pipe. The inner pipe carries fluid being transported, and the outer pipe provides secondary containment of fluid leaking from the inner pipe. The module consists of a length of inner pipe centred in a length of outer pipe by a series of spiders or ribs, fastened to one or both of the pipes. The ends of both inner and outer pipes are coplanar and perpendicular to the axis of the module. Successive modules are joined by simultaneously welding the inner and outer pipes of one module to the corresponding pipes of an adjacent module, the preferred material for the pipes is HDPE and the welding is accomplished using electric fusion welding techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.