Step bit
US10245656B2 · kind B2 · utility
6Cited by
14References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Jul 27, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23B2251/44
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A step bit according to some embodiments includes a body including one or more flutes having a cutting edge configured to cut a hole in a workpiece, and a plurality of steps provided on the body. The steps progressively increase in diameter from a first distal step to a terminal proximal step. One or more of the steps have first and second lands. An outer diameter of the first land is less than the outer diameter of the second land. A length of the first land is less than a length of the second land.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.