Offshore jackup rig locking apparatus and method
US5139366A · kind A · utility
29Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1991 |
| Grant date | Aug 18, 1992 |
| Priority date | — |
| Expiry date | May 2, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02B17/0818
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A locking apparatus and method for an offshore jackup rig having at least one leg extending through the hull and at least one set of rack teeth attached to each of the legs. One or more locking bars are supported from the hull and are movable in a direction substantially normal to the face of the rack teeth. A piston and cylinder power assembly moves the bars towards the teeth and a retention system engages the bars holding them in engagement with the teeth. The elevating system of the rig coacts with the set bars to lock the hull and legs together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.