Combination mooring system
US4532879A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1984 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | Jun 4, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B2021/001
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved mooring system for mooring a floating vessel to an offshore structure is disclosed. The mooring system includes a first mooring arm connected to the vessel which is in sliding engagement with a second mooring arm connected to the structure. The first mooring arm is initially at a mean position relative to the second mooring arm in the absence of loading forces induced by wind, waves, ice, or an ocean current acting on the vessel. As a loading force urges the vessel away from the structure to displace the first mooring arm from the mean position, a hydraulic pressure cylinder is compressed to furnish a restoring force which counteracts the loading force. As the loading force subsides, the hydraulic pressure cylinder urges the first mooring arm toward the mean position. In a preferred embodiment of the invention, a stop is attached to the first mooring arm to limit the excursion of the first mooring arm from the mean position. In other embodiments of the invention, a block and tackle combination can be used to vary the size and the stroke of the hydraulic pressure cylinder required to accommodate a particular loading force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.