Step drill for wood
US9156094B2 · kind B2 · utility
4Cited by
18References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Aug 24, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wood drill bit has a plurality of step sections where each step section has at least one flute that terminates in a cutting edge. The effective diameter of each of the plurality of step sections is different than the diameter of the other of the plurality of step sections such that a single bit may be used to bore holes in wood of different diameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.