Ice deflector
US4738566A · kind A · utility
6Cited by
21References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Mar 18, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2211/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A semi-submersible oil platform comprising two pontoons (1), columns (2) extending up from the pontoons and supporting a deck structure (3), and stays (4) extending transversally of the pontoons between the columns (2), is provided with a plough-like protecting device (8) for diverting drifting objects, e.g. ice bodies which are not sufficiently large to be detected by radar, but which, nevertheless, could cause considerable damage to the horizontal stays (4) of the platform and the drill string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.