Mast and substructure
US10648240B2 · kind B2 · utility
6Cited by
138References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Dec 27, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling rig may include a right substructure, left substructure, and a drill floor. The drill floor may be pivotably coupled to lower boxes of the left and right substructure by struts. The substructures may include hydraulic cylinders positioned to raise the drill floor and a mast coupled to the drill floor into a raised position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.