Method of and apparatus for bending glass sheets

Details Method of and apparatus for bending glass sheets Method of and apparatus for bending glass sheets

1995-04-12

1996-11-26

Czaja, Donald E.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65104, 65114, 65290, C03B 2303

Patent

active

055781047

ABSTRACT:
The glass sheet is heated to a heat-softened condition in a furnace, and conveyed to a prescribed position above an upper shaping surface of a ring mold. The sheet is then transferred onto the ring mold by lowering part of the conveyor means, and bent by a process involving raising both the ring mold and the conveyor means. This combination minimizes the introduction of optical distortion into the sheet. A preferred bending process is to press bend the sheet between the ring mold and an opposed upper bending mold.

REFERENCES:
patent: 3905794 (1975-09-01), Revells et al.
patent: 4571253 (1986-02-01), Revells et al.
patent: 4589901 (1986-05-01), Yoshizawa et al.
patent: 4606749 (1986-08-01), Nushi et al.
patent: 5004492 (1991-04-01), Borer et al.
patent: 5122177 (1992-06-01), Yashizawa et al.
patent: 5279635 (1994-01-01), Flaugher et al.
patent: 5286271 (1994-02-01), Rueter et al.

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