Hole saw having a drill bit with a pilot tip
US7556459B2 · kind B2 · utility
41Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2005 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9065
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hole saw has an arbor and a cup shaped cutting member. The cup shaped cutting member has an annular skirt with a plurality of teeth at its free end. A drill bit is secured on the arbor. The drill bit includes a pilot point with a first cutting edge. A second edge is formed on the body portion of the drill bit to form a constant diameter hole in the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.