Passive heave compensator
US11098539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | May 25, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/09
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A passive heave compensator, including an elastic cable, an electromagnetic damping device, a cylindrical sector, and a disc damping plate. The electromagnetic damping device includes a first cylinder including a helical coil, a permanent magnet mechanism disposed in the first cylinder, a first cover plate, a second cover plate, a first sliding shaft, a second sliding shaft, a first spring, a second spring, a first end cover, and a second end cover. The cylindrical sector includes a roof plate, a middle plate, a base plate, a first side plate, a second side plate, and a curved plate. The disc damping plate is disposed around the middle plate of cylindrical sector. The elastic cable is directly connected to the electromagnetic damping device. The electromagnetic damping device is disposed in the central part of the cylindrical sector. The middle plate is disposed between the roof plate and the base plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.