Patent · US Expired

Device for the support of a crystalline rod

US4060392A · kind A · utility

3Cited by

4References

5Claims

0Family size

Assignee

Wacker-Chemitronic Gesellschaft fur Elektronik Grundstoffe mbH · DE

Inventors

Heinz Herzer · Burghausen, DE
Helmut Zauhar

Key dates

Filing date	May 19, 1976
Grant date	Nov 29, 1977
Priority date	—
Expiry date	May 19, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T117/1084
WIPO fieldSurface technology, coating
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.