Apparatus for growing hollow crystalline bodies from the melt
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United States of America Patent
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Mar 21, 1995
Issued Date -
N/A
app pub date -
Mar 1, 1993
filing date -
Jul 10, 1990
priority date (Note) -
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Abstract
A single crystal dome is formed from a surface of revolution and grown from a liquid material on a linear die surface wettable by the molten material. A seed crystal is supported in a position spaced from an axis of revolution which lies in the plane of the wettable surface, and the seed crystal is rotated around the axis of revolution to generate a curved surface having a predetermined radius of curvature. The seed crystal is supported in a predetermined orientation of one of its axes with respect to the wetted surface of commencement of growth.
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