Guiding assembly for a piping system
US9328570B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2013 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Nov 25, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/0107
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A guiding assembly for a riser piping system (2) in an opening in the bottom (8) of a floating structure, said assembly permitting limited axial and angular displacement of the riser piping system (2) in said opening. The assembly comprises a prismatic anchor (1) surrounding a portion of the riser piping system (2) and being connected thereto, an outer prismatic guide tube (4) receiving the prismatic anchor (1), the outer prismatic guide tube (4) having inner surfaces that are parallel to and equally spaced from outer surfaces on the prismatic anchor (1), and rollers (3) arranged in at least two different levels and confined in spaces (2) formed between said inner and outer surfaces, the rollers (3) permitting relative axial movement between the prismatic anchor (1) and the outer prismatic tube (4).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.