Vibration-damping composite sheet steel
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United States of America Patent
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-
Mar 3, 1992
Issued Date -
N/A
app pub date -
Oct 26, 1990
filing date -
Jun 28, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vibration-damping composite sheet steel made by sandwiching a viscoelastic material between two steel sheets. A rust proofing coating which generates no gaseous matter is formed on one surface of each of the steel sheets which is contacted with the viscoelastic material. The coating is a phosphate coating having no water of crystallization with a coating weight per unit area of 0.5 g/m.sup.2 or over, or a galvanized zinc coating including no zinc oxide.
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