Carved out drill bit
US12054991B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2021 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Aug 27, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/56
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit includes a shank and drill bit head, which are both centered on a longitudinal axis, a gauge, and a front face with a peripheral edge adjacent to the gauge. An area within the peripheral edge defines a total area of the front face. The front face includes a central island at its radially innermost section, a plurality of peripheral platforms at its radially outermost section adjacent to the peripheral edge, and a recessed section positioned radially between the central island and the peripheral platforms. The central island and the peripheral platforms are axially raised compared to the recessed section. A plurality of inner front inserts are positioned on the central island and at least one outer front insert is positioned on each of the peripheral platforms. The area of the recessed section is >62% of the area of the total area of the front face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.