Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1989-08-14
1990-10-16
Straub, Gary P.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
156607, 1566191, C30B 1522, C30B 1524
Patent
active
049633341
ABSTRACT:
A heat pipe coracle is provide for use in a crystal growth apparatus; the heat pipe coracle includes a coracle ring, the coracle ring being composed of a material resistant to attack from a melt of the crystal growth apparatus and having density less than the melt so as to float upon the melt, the coracle ring having a central opening therethrough, the central opening being of a diameter approximately equal to that of a single crystal pulled from the melt through said central opening, the single crystal being in sliding contact with the coracle ring to insure uniform heat distribution about a vertical axis near an interface between the single crystal and the melt, and means for centering the coracle ring within a crucible of the crystal growth apparatus, the means for centering fixedly attached to the coracle ring and resistant to attack from said melt, the means for centering being in sliding contact with the wall of the crucible so that the heat pipe coracle can float upon said melt and below an encapsulating fluid, as desired, and move in a vertical direction.
REFERENCES:
patent: 4167554 (1979-09-01), Fisher
patent: 4264406 (1981-04-01), Hacskaylo
patent: 4597949 (1986-07-01), Jasinski et al.
patent: 4613486 (1986-09-01), Tatsumi et al.
patent: 4681995 (1987-07-01), Ahern et al.
Goodman, Crystal Growth Theory & Techniques, vol. 1, Plenum Press, 1974, pp. 248-249.
Yamaguchi, et al., CA106(8):59393r, 9/30/86.
Kotani et al., CA 109(26):241358x, 12/8/86.
Watanabe et al., CA 98(26):2254280, 1983.
Ahern Brian S.
Hilton Robert M.
Collier Stanton T.
Kalinchak Stephen G.
Singer Donald J.
Straub Gary P.
The United States of America as represented by the Secretary of
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