Crystal ingot lifting load measuring device

Details Crystal ingot lifting load measuring device Crystal ingot lifting load measuring device

1988-08-10

1990-04-17

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

7386256, 422249, G01L 504

Patent

active

049169556

ABSTRACT:
A load measuring device for measuring the pulling up load of a monocystalline rod (38) grown by the Czochralski method utilizes a strain gauge (20). The monocrystalline rod (38) is pulled up by wire rope (36) consisting of multiple strands. The pulley (34) guiding the wire rope between a drum (36) and a crystal holder (44) has a guide groove which has a cross-sectional shape which is substantially identical to a semicircle circumscribing the wire rope.

REFERENCES:
patent: 2656719 (1953-10-01), Webber
patent: 3289473 (1966-12-01), Louda
patent: 4663128 (1987-05-01), Helgeland

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