Process for applying forces to glass sheets, in particular at a

Details Process for applying forces to glass sheets, in particular at a Process for applying forces to glass sheets, in particular at a

1988-01-28

1990-05-01

Kellogg, Arthur

Glass manufacturing

Processes

Glass preform treating

65104, 65119, 65273, 651823, 294 642, 294 643, C03B 25035

Patent

active

049215205

ABSTRACT:
The present invention relates to a process and a device for applying tensile forces, with no contact with solid walls, to glass sheets, in particular at high temperatures, wherein a gas or vapor is blown between the glass sheet and a wall closely approached, and parallel, to said glass sheet. Between the glass sheet and said wall a gas cushion is established, in that the sections through which the gas flows inside the air gap between the glass sheet and the wall increase on the average in the direction of streaming of the gas, so as to allow the gas speed to decrease, and a recovery in gas pressure to consequently take place. Several forms of practical embodiment of the device are disclosed.

REFERENCES:
patent: 3300290 (1967-01-01), Misson
patent: 3332761 (1967-07-01), Fredley et al.
patent: 3523706 (1970-08-01), Logue
patent: 3880297 (1975-04-01), Martin
patent: 3993301 (1976-11-01), Vits

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