Shock absorbing structure and method for off shore jack-up rigs
US4195950A · kind A · utility
Inventor
Key dates
| Filing date | Aug 17, 1978 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Aug 17, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B2017/0082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A new and improved shock absorbing structure and method for use on a jack-up off-shore drilling rig is disclosed. The shock absorbing structure is designed for mounting on the bottom of each existing leg of the drilling rig and comprises a novel bottom member fixedly attached to each leg with the bottom member having a piston member positioned in the central portion thereof. The piston member is associated with at least one compression member formed around the piston member with the compression member being designed to absorb shock during a shock absorbing condition on the drilling rig leg. The compression member is fixedly attached to the bottom member by retaining means thereby making the structure self contained. Also disclosed is a new and novel method utilizing the shock absorbing structure on a jack-up off-shore drilling rig.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.