1976-03-01
1977-11-15
Envall, Jr., R. N.
F27D 112
Patent
active
040586685
ABSTRACT:
The side wall of a right-cylindrical crucible is formed by pairs of concentric tubes, one the outer and one the inner. Open upper ends of the inner tubes are spaced below closed upper ends of outer tubes, and a cooling water circuit serially through the inner and outer tubes is established by manifolds.
REFERENCES:
patent: 3461215 (1969-08-01), Reboux
patent: 3520980 (1970-07-01), Sterling et al.
Brown William S.
Envall, Jr. R. N.
Gardiner Donald A.
The United States of America as represented by the Secretary of
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