Crystal growth furnace with trap doors

Details Crystal growth furnace with trap doors Crystal growth furnace with trap doors

1981-02-09

1982-06-15

Clements, Gregory N.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including specific material of construction

422249, 432250, 110173R, C30B 1534

Patent

active

043350810

ABSTRACT:
An improved furnace is provided for growing crystalline bodies from a melt. The improved furnace is characterized by a door assembly which is remotely controlled and is arranged so as to selectively shut off or permit communication between an access port in the furnace enclosure and a hot zone within that enclosure. The invention is especially adapted to facilitate use of crystal growing cartridges of the type disclosed in U.S. Pat. No. 4,118,197.

REFERENCES:
patent: 1993786 (1935-03-01), Hollender
patent: 2139776 (1938-12-01), Simpson
patent: 2977106 (1961-03-01), Duff
patent: 3410547 (1968-11-01), Bielefeldt
patent: 3688645 (1972-09-01), Reaves
patent: 3752041 (1973-08-01), Smith
patent: 4010930 (1977-03-01), Sands
patent: 4113228 (1978-09-01), Frye
patent: 4118197 (1978-10-01), Mackintosh et al.
patent: 4213446 (1980-07-01), Stookey et al.

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