(under subclass 112) Systems provided with means for controlling the operation of the heating and/or cooling means, such means being automatically controlled in response to some condition affecting the operation of the load device.
(1) Note. The condition controlling the temperature responsive means may be (1) the amount of current flow through the load device, or (2) the temperature of the load device, or (3) any other condition affecting the operation of the load device.
(2) Note. See note (1) to the definition of subclass 112.
SEE OR SEARCH THIS CLASS, SUBCLASS:
114, and 116, for this subject matter where the heating means is an electrical heater.
SEE OR SEARCH CLASS 250, Radiant Energy,
429, for apparatus or methods for subjecting fluent materials to radiant energy rays or emanations, the apparatus being provided with means to control the flow of fluent material. Some of the apparatus in subclass 429 of Class 250 includes electrical systems which are closely analogous to the systems in this subclass. Where the fluent material is disclosed merely as a temperature modifying medium for the lamp or discharge devices, classification is in Class 315. Where the fluent material is disclosed as a material being treated, classification is in Class 250.
313, Electric Lamp and Discharge Devices,
13, for electric lamps and discharge devices which are combined with means for modifying the temperature of the discharge device or lamp and which have means for controlling the operation of the temperature modifier in the apparatus. In Class 313 no electrical system for the lamp or discharge device is provided nor is there any electrical control system for controlling the operation of the temperature modifier. The excluded systems are found in this class (315) and not in Class 313.
