Counterweight assembly for a self-propelled derrick rig assembly
US9341028B2 · kind B2 · utility
1Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Feb 15, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B15/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Improvements to base beams and self-propelled derrick rigs are described. The base beam can have two or more stabilizer arms which can be deployed. The base beam is also designed to support the derrick rig. An optional counterweight assembly can be connected to the front of the rig. The self-propelled derrick rig can be easily and quickly mounted to the base beam, and when mounted, the assembly will be able to withstand high hook loads and wind loading without the danger of the rig coming off of its wheels or falling over.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.