专利名称:ELECTRICAL HEATER
发明人:MALONE, Neil, Shaw,BOSHELL, Paul, Michael申请号:EP85903679.0申请日:19850725公开号:EP0191038A1公开日:19860820
摘要: An electric heating apparatus comprising a self-limiting heating elementelongated resistor (4) and a PTC resistor (5). The resistor is elongate and extends alongthe heating element in order to respond to the temperature of the total length of theheating element. The heating element (4) and the resistor (5) are connected in series, theresistor having a positive temperature coefficient so that its electrical resistance issubstantially less than that of the heating element when it is the normal operatingtemperature, but increases rapidly when exposed to temperatures above the normaloperating temperature.
申请人:HEAT TRACE LIMITED
地址:Tracer House Newby Road Hazel Grove Stockport, Cheshire SK7 5DA GB
国籍:GB
代理机构:Allman, Peter John, et al
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