Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1987-05-05
1989-07-11
Doll, John
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
422246, 422248, 422254, C30B 3500
Patent
active
048470538
ABSTRACT:
Fine single crystals of low-melting point materials are prepared by slowly withdrawing a glass crystal growth capillary tube containing the material from a heating apparatus which precisely maintains the molten material at a temperature just above its melting point. Temperature control of the molten material in the crystal growth tube, prior to solidification, is attained by enclosing the crystal growth tube in a temperature control tube containing the molten material being solidified. Preferably, the inside diameter of the temperature control tube is slightly larger than the outside diameter of the crystal growth tube, and both tubes reach into a reservoir of the molten material to be grown as a crystal, so that the molten material is drawn upwardly into the crystal growth tube and the space between the crystal growth tube and the temperature control tube by capillary action.
REFERENCES:
patent: 2149076 (1939-02-01), Stockbarger
patent: 3607137 (1971-09-01), Inoguchi et al.
patent: 4077699 (1978-03-01), Dyott et al.
patent: 4181515 (1980-01-01), Dyott et al.
patent: 4605468 (1986-08-01), Pastor
Pamplin, B., "Crystal Growth", 2nd Edition, Pergamon Press, 1980, pp. 6-9.
Pastor Antonio
Tangonan Gregory L.
Breneman R. Bruce
Denson-Low Wanda K.
Doll John
Hughes Aircraft Company
Karambelas A. W.
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