Method and apparatus for measuring displacement of molten metal

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United States of America Patent

PATENT NO 5507854
SERIAL NO

08353888

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Abstract

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First and second electrodes are inserted into molten metal. A first pseudo random signal is transmitted to the first electrode, and at the same time the first pseudo random signal and a second pseudo random signal which has the same pattern as the first pseudo random signal but which is slightly different in frequency from the first pseudo random signal are multiplied by each other in a first multiplier to thereby calculate a first product value. A signal obtained from the second electrode and the second pseudo random signal are multiplied by each other in a second multiplier to thereby obtain a second product value. The displacement of the molten metal is calculated from the time difference between maximum correlation values respectively appearing in time series patterns of the first and second product values.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011 ?1000011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsumoto, Kouichi Tokyo, JP 69 613
Nagamune, Akio Tokyo, JP 16 323
Sugawara, Masao Tokyo, JP 1 4
Tezuka, Kouichi Tokyo, JP 20 197
Yamada, Takeo Kanagawa, JP 95 1432

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