Power swivel and lubrication system
US11421479B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2016 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power swivel is disclosed that is configured to rotate tubular string and drill bit to form or extend a subterranean borehole. In an embodiment, the power swivel includes a motor, a gear box coupled to the motor, and a lubrication system coupled to the gear box. The lubrication system includes a pump disposed within the gear box, the pump including an outlet. In addition, the lubrication system includes a recirculation line fluidly coupled to the outlet of the pump. Further, the lubrication system includes a first injector fluidly coupled to the recirculation line. The injector is configured to deliver lubricant to one of a bearing and a gear disposed within the gear box.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.