Stepped drill bit having split tip
US6890133B2 · kind B2 · utility
43Cited by
12References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Feb 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill bit is disclosed having a cutting portion having a plurality of axially aligned, graduated cutting members. Each of the members has cutting edges defined by a single slot extending therethrough. A tip portion at one end of the cutting portion defines at least a pair of cutouts therein, wherein one of the cutouts is aligned with the slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.