Elevator link extension systems
US9556690B1 · kind B1 · utility
6Cited by
14References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2015 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Oct 21, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In the field of well drilling, a bail link extender device connected to a drilling rig enabling the working length of an elevator links to be extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.