Gas riser with free rotating plastic riser casing
US6371525B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49428
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A riser assembly to transmit gas from a buried fluid line to a manifold. Inner (50) and outer (90) casings are received in a first end of an adapter (54). The other end of the adapter (60) is secured to the manifold. A gripping assembly (70) holds the inner casing in the adapter and prevents a pullout while also providing a sealed inner face between the inner casing and the adapter. A mounting assembly is provided to secure the outer casing in the adapter. It, too, prevents pullout of the outer casing and also allows the outer casing to freely rotate relative to the adapter. In selected embodiments the outer casing is formed of a non-corrosive material such as a PVC or polyethelene to address corrosion resistant properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.