Multi-indenter hammer drill bits and method of fabricating
US11111729B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Nov 29, 2017 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Dec 23, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multi-indenter drill bit includes a plurality of indenters arranged on a drilling surface of a bit face. The ratio of the total indenter area to the bit face area is defined by a parameter KPI1 (expressed as a percentage), and the ratio of the average individual indenter area to the bit face area is defined by a parameter KPI2, (expressed as a percentage). The relationship between KPI1 and KPI2 is defined by an equation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.