Spade drill
US4060335A · kind A · utility
48Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1976 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Oct 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/90993
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A spade drill is provided with a holder for a spade cutting blade which is clamped in a slot of the holder by means of a clamp screw. The spade cutting blade is essentially formed with a cutting surface coming to a central point and of the same shape as the first cutting surface with an abutment surface located within the spade drill holder in the clamping slot which receives the cutting surface for holding the bit in place with means in the form of a clamp located across the clamping slot to grip the spade drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.