Separating sheet glass
US5303861A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Sep 1, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/371
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of, and apparatus for, separating a sheet of glass along a score line on the sheet. The method comprises flexing the glass at the score line along an axis of flexure on the support to pre-stress the glass to a level below the critical stress level, and initiating a break at one end of the score line. The apparatus comprises a support for the sheet, the support defining an axis of flexure for alignment with the score line, at least one movable pressure member spaced above and on one side of the score line, a press head to move the pressure member into contact with the sheet of glass to pre-stress the sheet at the score line, and a break initiator at one end of the score line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.