Drill bit
US11278970B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Oct 7, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23B2251/60
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill bit includes a body having a first end, a second end, and an axis of rotation extending centrally through the body from the first end to the second end. The drill bit also includes a shank adjacent the second end. The drill bit further includes a cutting head adjacent the first end. The cutting head includes a pilot tip and a cutting portion. The cutting portion has first tip surfaces and second tip surfaces on opposite sides of the pilot tip. Each first tip surface extends radially outward from the pilot tip to a corresponding second tip surface. The first tip surfaces define a first tip angle through the axis of rotation that is less than 180 degrees. The second tip surfaces define a second tip angle through the axis of rotation that is smaller than the first tip angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.