Flexible, elongated positive temperature coefficient heating assembly and method
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United States of America Patent
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May 1, 1990
Grant Date -
N/A
app pub date -
Apr 22, 1988
filing date -
Apr 22, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible heating cable and method using positive temperature coefficient conductive (PTC) polymeric material as the primary heat source with the PTC composition material being electrically and mechanically connected to substantially flat, preferably braided, electrical conductors. A covering of dielectric material preferably is used to electrically separate the cable from the environment. The cable construction improves the heat transfer from the PTC composition material to the environment, thereby increasing the power generated by the PTC composition material. Additionally, the cable construction improves the temperature distribution of the cable.
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