(under subclass 635) Subject matter where the monitored device is an electric heating element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
584+, for monitoring the thermal condition of an electric heater.
SEE OR SEARCH CLASS
219, Electric Heating,
248, for a heating device combined with a sole plate-type pressure application means (e.g., a flatiron, etc.) including a condition-responsive indicator, subclass 269 for an igniter-type resistive element indicating means, subclass 445.1 for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) including an indicator, subclasses 446.1+ for an exposed planar support surface for material to be heated (e.g., hot plate, etc.) including a sensing means, subclass 487 for a heating device having a power supply and voltage or current regulation or current control means to control or regulate plural separate distinct heating resistance elements (i.e., one control system for all elements, etc.) selectively, sequentially, or alternately including indicator means, or subclass 506 for a heating device having a power supply with automatic regulation of its voltage or current including signal or indicator means.
