Apparatus for producing czochralski-grown single crystals

Details Apparatus for producing czochralski-grown single crystals Apparatus for producing czochralski-grown single crystals

1991-03-29

1992-06-30

Kunemund, Robert

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including specific material of construction

1566171, 15662073, 15662074, 15662075, 156DIG98, 422250, B01D 900

Patent

active

051261138

ABSTRACT:
An apparatus for producing a single crystal ingot grown by the Czochralski method includes a plurality of grip arms each having a grip finger engageable with a downwardly facing engagement step formed on an upper part of the single crystal, and a ring slidably fitted around a plurality of grip arms to hold the grip arms in a closed position in which the engagement step of the single crystal is firmly gripped by the grip fingers against detachment. The apparatus having such a ring is particularly advantageous when used for the production of a heavy single crystal ingot in which the grip arms are forced to spread apart by the weight of the single crystal ingot.

REFERENCES:
patent: 788142 (1905-04-01), Pease
patent: 3511609 (1967-01-01), Kato
patent: 3607138 (1971-09-01), Keller
patent: 4176002 (1979-11-01), Quenisset et al.
patent: 4284605 (1981-08-01), Pierrat
European Search Report Reference No. EP-7058-30/iw.

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