Single crystal lifting equipment includes a winch positioning mechanism

• Main Authors: TSUNOKA, TOSHIAKI, HIRATSUKA, KANAGAWA, JP, YAMAGISHI, RYO, KOMATSU, ISHIKAWA, JP, YOSHIZAWA, KENICHI, KOMATSU, ISHIKAWA, JP, SUDA, AYUMI, HIRATSUKA, KANAGAWA, JP
• Format: Patent
• Language: English; German
• Published: 17.06.1999
• Edition: 6
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CONTROLLING; CRYSTAL GROWTH; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; METALLURGY; PHYSICS; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; REGULATING; SEMICONDUCTOR DEVICES; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

Single crystal lifting equipment includes a positioning mechanism for positioning a crystal lifting winch at a raised position corresponding to the rotating position of a detachable crystal pulling chamber. Single crystal lifting equipment comprises a pulling chamber which can be raised from the top of a vacuum chamber and which is mounted for horizontal rotation and vertical movement on a column, a winch wire or cable which extends through the pulling chamber into the vacuum chamber for lifting the crystal, and a positioning mechanism for positioning the winch at a raised position corresponding to the rotating position.