Shock absorber and method for offshore jack-up rigs
US4968181A · kind A · utility
24Cited by
4References
25Claims
0Family size
Inventor
Key dates
| Filing date | Apr 7, 1989 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Apr 7, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B2017/0082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A new and improved shock absorber mechanism and method for use on the leg structure of a jack-up offshore drilling rig is disclosed. The shock absorbing mechanism is designed to be mounted on the bottom of each existing leg of a drilling rig and comprises a pointed piston member which is positioned on the bottom of the leg structure, wherein the piston member projects downward through the can/footing of the rig leg and is held in place by a resilient tension member which is designed to absorb shock forces during vertical/axial impact of the leg structure when contact is made with the ocean floor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.