Shoulder protected drilling assembly
US12098599B2 · kind B2 · utility
0Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 9, 2020 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Oct 9, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0426
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling assembly for percussive drilling includes at least two of a drill bit, a drill rod and a guide adapter. A peripheral surface of the shoulder on the drill rod is at least partially encased in both radial and axial directions inside the mounting sleeve of the drill bit or the mounting sleeve of the guide adapter, and/or the peripheral surface of the shoulder on the guide adapter is at least partially encased in both radial and axial directions inside the mounting sleeve of the drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.