High voltage insulator
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United States of America Patent
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May 11, 1999
Issued Date -
N/A
app pub date -
Sep 29, 1997
filing date -
Sep 18, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An improved high voltage insulator includes a central core and an insulating body fitted tightly around the central core. A flexible coating layer is interposed between a part of the central core and the insulating body. The flexible coating layer fills in shrinkage cavities and compensates for a retraction effect caused by injected material used in forming the insulating body. The insulating body is overmolded to the central core previously coated with the flexible coating layer with an injected insulating resin such as a thermoplastic or thermosetting resin. The insulator could be used as a capactive divider or bushing insulator.
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