Step drill bit
US10695845B2 · kind B2 · utility
0Cited by
64References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2019 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/906
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.