US PATENT CLASS 165
Class Notes
Current as of: June, 1999
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DEFINITION
Classification: 165/
This class includes apparatus or process not provided for in other classes for transferring heat, or apparatus or process not provided for in other classes relating to an auxiliary device particularly adapted to be used with such heat transfer apparatus.
(1) Note. A patent including a claim having nominal recitation of structure external to this class in combination with significantly claimed heat transfer apparatus of this class is included in this class. A patent including a claim having significant recitation of structure external to this class is excluded from this class unless specifically provided for in this class. See Subclass References to the Current Class, below, for a subclass reference for a combination of a vehicle structure and significantly claimed heat transfer apparatus, and for a combination of a building structure and significantly claimed heat transfer apparatus.
(2) Note. Method of repairing, making, or assembling a heat exchanger is not provided in this class but is classified in an appropriate manufacturing class.
(3) Note. Any process claim appropriate for this class are classified in the subclass providing for structure used in the process.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for heating and cooling including addition or removal of water vapor from air.
41+, for a combination of a vehicle structure and significantly claimed heat transfer apparatus.
47+, for a combination of a building structure and significantly claimed heat transfer apparatus.
58, and 200, see note for the line between Classes 62 and 165.
58+, for a heating and cooling system with an ancillary separator.
200, see "note" for the line between Class 165 and related art.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids, appropriate subclasses. See Lines With Other Classes and Within This Class in the class definition of Class 34 for the line.
62, Refrigeration, appropriate subclasses, for processes limited to refrigeration and apparatus having features specialized to refrigeration. In general if the heat exchanging means is such that it is adapted for interchangeably or convertibly heating or cooling it is not specialized to refrigeration. For example, features such as ice supports, material phase changing means (refrigeration producers), atmospheric condensate handling or an article handler with means peculiar to refrigerating the article would be considered specialized to refrigeration. As to structure adapted to both heat and cool, see Subclass References to the Current Class in this class (165). See Subclass References to the Current Class for a subclass reference to the the line between Classes 62 and 165.
65, Glass Manufacturing,
512+, for specialized cooling of newly formed glass fibers or filaments; subclasses 509+ for specialized heating of newly formed glass fibers or filaments; subclasses 348+ for means specialized to the cooling of manufactured glass products; subclasses 484+ for means specialized to exchange heat in a fiber or filament forming operation and appropriate subclasses for processes or means specialized to the application of or removal of heat in glass manufacturing.
95, Gas Separation: Processes, for processes of gas separation including heat exchange. Cold wall-hot wall thermal diffusion processes will be found in Class 95,
289,. Class 165 will take processes where only indirect heat exchange is involved, whether or not gas separation is said to occur. See Subclass References to the Current Class in this class (165) for a subclass reference for heating and cooling including addition or removal of water vapor from air.
96, Gas Separation: Apparatus, for apparatus for gas separation including a heat exchanger. Cold wall-hot wall thermal diffusion apparatus will be found in Class 96, 221,. Class 165 will take apparatus where only indirect heat exchange is involved, whether or not gas separation is said
to occur. See Subclass References to the Current Class in this class (165) for a heating and cooling system with an ancillary separator.
99, Foods and Beverages: Apparatus, appropriate subclasses for food treating apparatus having heating or cooling means combined with additional apparatus specialized to food.
100, Presses,
92+, for presses means to heat, cool or dry the material.
122, Liquid Heaters and Vaporizers,
32+, for an indirectly heated closed liquid container with an internal vapor separator, and appropriate subclasses for a closed liquid heating vessel with a heat generator and for an accessory or element that of necessity must form a part of the liquid heating combination.
126, Stoves and Furnaces,
33, for a stove with a steam table; subclasses 204+ for a body warmer: subclasses 226+ for a tool heater; subclass 247 for a frictional heater; subclasses 263.01+ for a chemical reaction type heater; subclasses 561+, 569+ and 714 for a solar heater; subclass 343.5 for a melting furnace; and appropriate subclasses, for open liquid heating structures not equally adapted for cooling, for heating stoves, for means for the application of heat for house warming and cooking purposes, and for specialized accessories and elements of such means.
137, Fluid Handling,
334+, particularly subclass 340 for fluid handling apparatus combined with means to heat or cool a part of the system or its contents by a heat exchange.
138, Pipes and Tubular Conduits, 37+, for general utility pipe having flow regulator or baffle.
159, Concentrating Evaporators, appropriate subclasses, for means for the generation and transfer of heat of the specific purpose of concentration by evaporation.
196, Mineral Oils: Apparatus,
104+, for a still designed for mineral oil distillation and subclasses 138+ for condensing peculiarly adapted and limited to the mineral oil art.
202, Distillation: Apparatus,
163+, and 232+ for apparatus for volatilizing a substance for
the purpose of recovering material from the vapor by condensation or absorption.
203, Distillation: Processes, Separatory,
41, and 42, for a process of volatilizing a substance and recovering material from the vapor by some type of sorption.
210, Liquid Purification or Separation,
175+, 612+, 664, 737, 742, 766, and 774 for processes and apparatus of that class with heat or heat exchange.
219, Electric Heating, appropriate subclasses for an electric heater or an electrically heated tool. 221, Article Dispensing,
150, for subject matter of that class with cooling or heating.
222, Dispensing,
146, for dispensers with heating or cooling means.
236, Automatic Temperature and Humidity Regulation,
44, for automatic humidity controlling mechanism; subclass 46 for temperature or a humidity controlling mechanism including a timing means; and appropriate subclasses for a temperature or humidity control mechanism for a control of general utility. The line between Class 165 and 236 is: Class 165 takes: (a) Nominal recitation of a means for heating and cooling, and a means for automatically controlling the means for heating and cooling. (b) Specific heat exchanger structure in combination with a means for automatically controlling a heat exchanger. (c) Specific heat exchange structure in combination with a means for automatically controlling a heating and a cooling means. Class 236 takes: A patent with nominal recitation of a heat exchanger in combination with a means for automatically controlling a heating or cooling means.
237, Heating Systems,
70+, for a heat distributing means peculiarly adapted for heating, and appropriate subclasses for (1) a heat producer combined with means for distributing a fluid heated thereby and (2) apparatus including systems for heating a room, chamber, house or other inclosing structure when such apparatus is not equally adapted for cooling. See Subclass References to the Current Class for a subclass reference to the line between Classes 237 and 165.
239, Fluid Sprinkling, Spraying, and Diffusing,
13, and 128+ for processes and apparatus of that class with
heating or cooling.
241, Solid Material Comminution or Disintegration, 23, and 65+ for processes and apparatus of that class with heating or cooling.
252, Compositions, particularly
67+, and 71+. Patents are placed in Class 252 (1) claiming admixtures of ingredients, or claims to an old compound limited to use as a heat exchange agent, (2) processes of heat exchange comprising known heat exchange steps broadly recited and distinguished solely by the composition or compound used, and (3) apparatus with the composition or compound therein, where characteristics of apparatus structure are not claimed. The preceding are placed in Class 252 even though freezing or boiling points or temperatures of use are specified.
261, Gas and Liquid Contact Apparatus, appropriate subclasses for apparatus specially adapted to produce an intimate contact between gases and liquids to exchange properties or mutually modify conditions; particularly,
127+, for a gas liquid contact device with an immediately associated means for externally supplying heat to or removing it from a contact fluid before, after or during contact to perfect the contact operation; and subclasses 158+ for a contact device in which heat is interchanged between contact fluids out of contact before, after or during contact.
291, Track Sanders,
19+, for subject matter of that class with a heater.
312, Supports: Cabinet Structure,
236, for the combination of a cabinet and a heater or heat exchanger, having no feature relating to the promotion or control of the flow of the fluid in the cabinet relative to the heat exchanger.
366, Agitating, appropriate subclasses for agitating process or apparatus of general utility;
144+, for an agitator in combination with a heating or cooling means. The line between Classes 165 and 366 on combined agitator and heat exchanger is:
Class 165 takes: (a) All patents with significant heat exchange structure in combination with nominal structural recitation of an agitator. (b) All patents with a heat exchanger having an agitator which operates on a working fluid (e.g., a coolant or heating fluid), whether or not the agitator structure is broadly or significantly claimed. (c) All patents with a heat exchanger having a working fluid (e.g., a coolant or heating fluid) which goes through the inside of a movable portion of an agitator, whether or not the agitator structure is broadly or significantly claimed
Exception to the above statements (b) and (c): Patents in which a working fluid is agitated by an agitator and then allowed to be mixed in a mixing chamber containing a material or fluid to be treated ( heated or cooled) are classified in Class 366.
Class 366 takes: (a) Significant agitator structure in combination with significant structure of a heat exchanger. (b) Significant agitator structure in combination with nominal structure of a heat exchanger.
Exception to the above statements (a) and (b): A patent with a heat exchanger having a working fluid (a coolant or heating fluid) which goes through the inside of a movable portion of an agitator is classified in Class 165, whether the agitator structure is significantly or broadly claimed. Class 366 takes a heat exchanger having an agitator which operates on a working fluid only if the working fluid is then allowed to flow into a mixing chamber containing a material or fluid to be heated or cooled.
373, Industrial Electric Heating Furnaces, appropriate subclasses for electrical furnaces.
376, Induced Nuclear Reactions: Processes, Systems, and Elements,
210+, 298+, 322, 378+, and 402+, for heat exchange devices used in combination with nuclear reaction systems.
383, Flexible Bags, for hot water and ice bags, per se.
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,
305, for fume generators.
426, Food or Edible Material: Processes, Compositions, and Products, appropriate subclasses.
432, Heating, appropriate subclass, for a residual material heating apparatus or method. 454, Ventilation, appropriate subclasses for apparatus for supplying air to, removing it from, or distributing in an enclosure with or without heating and without a specific heat exchange means.