Chuck sleeve insert for a drill
US5704745A · kind A · utility
2Cited by
28References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Sep 4, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/957
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A double-ended drill bit having opposed cutting ends of different structural configurations is provided in combination with a sleeve or holder to be received within a drill chuck. The sleeve is provided with a cylindrical body having a top end with a pair of helically-shaped longitudinally extending members in spaced mating relation attached thereto. One cutting end of a drill bit is received within the cylindrical body and the spaced helically-shaped members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.