Gas hearth bed with grooved exit portion

Details Gas hearth bed with grooved exit portion Gas hearth bed with grooved exit portion

1979-09-04

1981-02-10

Kellogg, Arthur D.

Glass manufacturing

With fluid support for article or preform

Gaseous support

65273, 65 252, 65 253, C03B 2700

Patent

active

042499283

ABSTRACT:
Tempered flat glass sheets produced by the gas hearth process tend to become warped and/or kinked. Grooving the surface of the gas hearth bed at its exit portion only in the vicinity of supply passages not interspersed with exhaust passages reduces the warping and kinking to a significant degree.

REFERENCES:
patent: 1622817 (1927-03-01), Waldron
patent: 3223501 (1965-12-01), Fredley et al.
patent: 3338697 (1967-08-01), McMaster et al.
patent: 3923488 (1975-12-01), Pytel et al.
patent: 4046543 (1977-09-01), Shields

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