Device for the support of a crystalline rod

Details Device for the support of a crystalline rod Device for the support of a crystalline rod

1976-05-19

1977-11-29

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

156620, 248309R, 248358R, 269237, 269321T, B01J 1710

Patent

active

040603920

ABSTRACT:
Device for supporting a crystalline rod during crucible-free zone melting ich comprises a zone-drawing apparatus, a rotating shaft in said apparatus, means for fastening the shaft in the apparatus, a screw bolt mounted for rotation with the shaft, the top end of the screw bolt having a bore for receiving a seed crystal, two or more swivel arms mounted adjacent to the bore and capable of being opened and closed, a ring coaxially surrounding the bolt and means for vertically moving the ring.

REFERENCES:
patent: 3191924 (1965-06-01), Haus
patent: 3211881 (1965-10-01), Jablonski et al.
patent: 3901499 (1975-08-01), Sporrer
patent: 3923468 (1975-12-01), Keller

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