Method of and apparatus for forming bent sheet glass

Details Method of and apparatus for forming bent sheet glass Method of and apparatus for forming bent sheet glass

1992-09-04

1994-06-07

Woodard, Joye L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65106, 65268, 65273, 65356, C03B 23035

Patent

active

053186150

ABSTRACT:
A heated sheet of glass discharged from a heating furnace is lifted by a ring mold until it is held against a fully continuous lower molding surface of a bent shape of an upper mold. After the sheet of glass is held against the lower molding surface by the ring mold, a vacuum is developed in the upper mold to attract the sheet of glass to the lower molding surface through suction holes defined in the lower molding surface. Thereafter, the ring mold is lowered away from the upper mold to allow the sheet of glass to be bent by the lower molding surface while the sheet of glass is being attracted thereto only under the vacuum developed in the upper mold. The sheet of glass is continuously attracted under the vacuum to the lower molding surface until the sheet of glass is annealed.

REFERENCES:
patent: 3421875 (1969-01-01), Kirkman
patent: 4075381 (1978-02-01), Furukawa et al.
patent: 5009694 (1991-04-01), Nishitani et al.
patent: 5143535 (1992-09-01), Herrington et al.

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