Electrical PTC heating device
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United States of America Patent
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-
Mar 30, 1999
Grant Date -
N/A
app pub date -
Nov 24, 1997
filing date -
Aug 1, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electrical heating device employing positive temperature coefficient (PTC) thermistors as heating elements, which provides direct contact between the thermistor heating elements and the radiation units on both sides with no intervening members and which also provides the electrical current to the heating elements via the radiation units.
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