Drilling tools
US4696355A · kind A · utility
7Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1986 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Jan 6, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9097
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drilling tool for percussion drilling machines is proposed which has an increased endurance strength or fatigue strength when used in percussion drilling machines having a high striking speed. For this purpose, the carbide cutting tip (11) is arranged transversely to the flute runout (12, 13) so that the effective moment of resistance area in the area of the groove root (22) of the recessed groove (14) is not weakened by flute runout surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.