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US 2010/0059502 A1Published application
Control of heating cable
AssigneeHeat Trace Limited
InventorJason Daniel Harold O'Connor
Life of this patent
Estimating the term…
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AssigneeHeat Trace Limited
InventorJason Daniel Harold O'Connor
Estimating the term…
Devices and methods for the control of heating cables are described. A first heating cable assembly includes a heating cable, a heater regulator for connection electrically in series between the heating cable and a voltage source. The heater regulator comprises a material having a positive temperature coefficient of resistance such that in use the voltage across the heating cable is dependent upon the temperature of the heater regulator. A second heating cable assembly includes a heating cable having a resistive heating element, a material having a positive temperature coefficient resistance for controlling the heat output from the heating cable, and a cold start limiter element comprising a material having a negative temperature coefficient of resistance for connection electrically in series with the heating element and a voltage source.
A heating cable assembly comprising:
A method of providing a heating cable assembly comprising:
A temperature dependent voltage supply for supplying power to a heating cable comprising:
A parallel resistance heating cable comprising two conductors extending adjacent to one another, a heating element comprising a positive temperature coefficient of resistance material provided between the two conductors;
Dependencies are inferred from the claim text.