Marine riser tool
US4228704A · kind A · utility
0Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1978 |
| Grant date | Oct 21, 1980 |
| Priority date | — |
| Expiry date | May 24, 1998 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/038
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool for preloading a marine riser connection having a first member, a second member and a nut having a lug extending therefrom, the connection being made up by rotating the nut with respect to the first member so as to place the nut in tension, such tension operating to hold the first and second members together in compression, is disclosed. The tool includes a lug holder for holding the lug, a block for engaging a reference member attached to the first member, and a device for forcing the lug holder and block apart so that the nut is rotated with respect to the first member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.