Projectile drilling systems and methods
US11434695B2 · kind B2 · utility
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17References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2018 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Aug 8, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/09
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Spherical projectiles may be used to form one or more holes in geologic or other material. These holes may be used for drilling, tunnel boring, excavation, and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.