Regulating device and a method of using same in a borehole
US10533376B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2016 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Aug 16, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A regulating device is for use in a drill string between a drilling machine and a drill bit. The regulating device has a tubular female portion which at least partly encloses a tubular male portion; a helical coupling between the female portion and the male portion to allow a telescoping movement of the regulating device in both directions between a fully extended position and a fully retracted position, the movement of the regulating device occurring when there is a difference in rotational speed between the female portion and the male portion; a first biasing device which is arranged to exert a driving force to drive the regulating device towards its extended position; and a second biasing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.