Sealing device and method for sealing between a chain and a chain pipe
US7000556B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2004 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | May 10, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B21/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sealing device (1) and method for sealing between a chain (2) and a chain pipe (3), said chain for example being an anchor chain on a marine offshore platform or on a ship, and said chain pipe (3) leading for example to a chain locker for onboard storage of the chain in said platform or ship. The sealing device (1) comprises at least two opposing cover lids (7) positioned at the mouth (8) of the chain pipe (3) or an extension collar (7) thereof. The cover lids (7) are movably arranged from an open position into a closed position in which the cover lids (7) abut each other and seal the chain pipe (3) from water intrusion by sealingly engaging a chain link (10) of the chain. Furthermore, the cover lids (7) are provided—in mutual abutment sides (15) thereof—with one or more recesses (16) shaped in conformity with the contacting outer periphery (17) of said chain link (10). The invention is especially characterized in that the cover lids (7) each exhibit at least one inflatable seal element (18), said seal element (18) extending along a respective mutual abutment side (15) of the cover lids (7) and being adapted to expand upon pressurization with a fluid such as pressurized air, into…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.