Crystal growing apparatus

Details Crystal growing apparatus Crystal growing apparatus

1988-09-30

1990-06-26

Doll, John

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including specific material of construction

422246, 156608, 1566171, 1566191, 1566364, 136DIG83, 136DIG88, 136DIG89, 136DIG64, 118401, C30B 1534

Patent

active

049370537

ABSTRACT:
An apparatus and process are disclosed for growing tubular crystalline bodies according to the Edge defined, Film-Fed Growth (EPG) process, wherein the apparatus has at least one exterior passage (240) and at least oen interior passage (245) formed in its crucible die assembly (200) and associated parts, whereby gases introduced into at least one exterior passage (725) will be delivered to the zone located outside the growing crystalline body (900) (i.e. the "exterior" zone ) adjacent to the growth face on the die member (215), and gases introduced into at least one interior passage (720) will be delivered to the zone located inside of the hollow crystalline body (i.e. the "interior" zone) adjacent to the growth face on the die member, whereby the atmosphere in each of the zones may be separately controlled.

REFERENCES:
patent: 3265469 (1966-08-01), Hall
patent: 3701636 (1972-10-01), LaBelle et al.
patent: 3846082 (1974-11-01), LaBelle et al.
patent: 3953174 (1976-04-01), LaBelle
patent: 4118197 (1978-10-01), MacKintosh et al.
patent: 4230674 (1980-10-01), Taylor et al.
patent: 4415401 (1983-11-01), Wald et al.
patent: 4440728 (1984-04-01), Sterment et al.
patent: 4443411 (1984-04-01), Kalejs
patent: 4544528 (1985-10-01), Sterment et al.
patent: 4647437 (1987-03-01), Sterment et al.

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