Severing by tearing or breaking – Methods – With preliminary weakening
Patent
1992-07-15
1994-03-29
Phan, Hien H.
Severing by tearing or breaking
Methods
With preliminary weakening
225 965, 225103, C03B 33033
Patent
active
052977102
ABSTRACT:
A method and an apparatus for dividing a flat glass panel (14) are described. The panel (14) which is to be divided and which is raised away from its substrate is securely held in its part regions by two clamping devices (10, 12) which are pivoted in opposite directions about a common pivot axle (4) and thus exert on the panel (14) a bending resulting in breakage along the score line (30). Simultaneously exerted on the clamping devices (10) which are, moreover, arranged to be displaceable in the direction of their connection line is a force which presses the clamping devices apart and which at the moment of breakage of the glass panel results in the two part panels moving apart, so that the broken edges cannot strike against one another. The part panels can be deposited again on a substrate after breaking. The invention further provides for marginal strips to be broken off the panel (14) to be divided, in the raised state thereof directly before dividing.
REFERENCES:
patent: 4131222 (1978-12-01), Hodgkinson
patent: 4140258 (1979-02-01), Gray
patent: 4171895 (1984-09-01), Lisec, Jr.
patent: 4278193 (1981-07-01), Pereman et al.
patent: 4698088 (1987-10-01), Bando
Bednarek Michael D.
Phan Hien H.
Schott Glaswerke
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