Flat diamond drill
US5653627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/9093
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A diamond drill consists of a core and a pair of abrasive diamond tips which are joined to constitute a diamond tip and core assembly in the form of a flat plate. The diamond tips have chamfering sections for providing a cutting blade of a diameter smaller than that of a cutting blade provided by finishing blade sections thereof. The chamfering sections can be used not only for chamfering an edge of a glass plate defining an opening but for cutting a non-circular opening. In another embodiment, an abrasive diamond ring is installed on a shank and used for chamfering an edge of a glass plate defining an opening or for cutting a non-circular opening having a small corner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.