Glass sheet annealing lehr having gas support conveyor

Details Glass sheet annealing lehr having gas support conveyor Glass sheet annealing lehr having gas support conveyor

1991-03-19

1993-05-11

Woodard, Joye L.

Glass manufacturing

With fluid support for article or preform

Gaseous support

65162, 65194, 65348, C03B 25093

Patent

active

052097676

ABSTRACT:
A glass sheet strip annealing lehr (16) is disclosed as including a housing (18) along which a conveyor (26) including a gas support (28) supports a glass sheet strip G by pressurized gas for movement between entry and exit ends (22,24) of the housing before a conveyor drive (32) engages the strip after the surfaces thereof are cooled below the strain point. Best results are achieved when the glass sheet strip is supported only by the gas support (28) until its surfaces are placed in compression. Lower and upper manifolds (34,36) respectively support and convey the glass sheet strip within the housing (18) preferably by a recirculating gas flow supplied by gas burner (76) and associated gas jet pumps (78).

REFERENCES:
patent: 1622817 (1927-03-01), Waldron
patent: 1848097 (1932-03-01), Adams
patent: 3070901 (1963-01-01), Allander
patent: 3223498 (1965-12-01), Davidson
patent: 3294518 (1966-12-01), Laseck
patent: 3355275 (1967-11-01), Sensi
patent: 3506422 (1970-04-01), Walters
patent: 3687648 (1972-08-01), Oulton
patent: 4059426 (1977-11-01), Starr
patent: 4749400 (1988-06-01), Mouly et al.
patent: 5018661 (1991-05-01), Cyb
patent: 5078775 (1992-01-01), Maltby, Jr.

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