Grinding wheel for shaping flat glass
US9649747B2 · kind B2 · utility
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1References
11Claims
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Key dates
| Filing date | Aug 14, 2012 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Apr 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24355
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A grinding wheel is suited for shaping glass, notably glass that is less than or equal to 4 mm thick. This grinding wheel has at least one abrasive portion formed of at least one metal binder and of diamonds distributed in the binder. The binder has a Rockwell B hardness of between 95 and 105 and is tungsten-based. The diamonds have a size of between 75 and 95 μm and a concentration of between 2.2 ct/cm3 and 2.64 ct/cm3. Glass, in particular for shaping motor-vehicle glazing units, can be shaped with this grinding wheel, making it possible to achieve travel speeds greater than or equal to 30 m/min.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.