Self-feed wood bit
US6612788B2 · kind B2 · utility
23Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/909
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A large diameter self-feed wood bit is provided including a feed spur having a coarse spur thread of approximately 1.75 millimeters and a 20-degree main cutting edge relief angle. The main cutting edge relief angle complements the coarse self-feed thread pitch for faster, more efficient drilling of large diameter holes in wood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.