Cutting method and cutting stage of toughened glass
US10308543B2 · kind B2 · utility
12Cited by
2References
8Claims
0Family size
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Inventor
Key dates
| Filing date | Jul 25, 2013 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Apr 15, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A cutting method and cutting stage of toughened glass with which a piece of toughened glass is divided into unit pieces of toughened glass. The cutting method cuts a piece of toughened glass which is strengthened by forming a compressive stress in the surface of a raw glass plate. The method includes the steps of reducing the central tension inside a cutting portion of the piece of toughened glass that is to be cut by concavely bending the cutting portion; and cutting the piece of toughened glass by forming a median crack in the cutting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.