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![[Search a list of Patent Appplications for class 165]](../as.gif) Class 165 | HEAT EXCHANGE |
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![[List of Patents for class 165 subclass 4]](../ps.gif) | 4 | REGENERATOR |
| | 5 |  Cleaning |
| | 6 | Movable heat storage mass with enclosure |
| | 9.1 | Checker brick structure |
| | 9.2 |  Gradated flow area, heat capacity or heat resistance |
| | 9.3 | Having gas supply or exhaust manifold structure |
| | 9.4 | In casing |
| | 10 | Heat collector |
| | 11.1 | WITH ALARM, INDICATOR, SIGNAL, REGISTER, RECORDER, TEST OR INSPECTION MEANS |
| | 200 | WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL |
| | 201 | Having heating and cooling capability |
| | 202 | Vehicle installation |
| | 203 |  Plural temperature regulators for plural zones |
| | 204 | Flow control of chest, foot, or defrost air in vehicle |
| | 205 | Plural temperature regulators for plural zones |
| | 206 | Nonbuilding system (e.g., machine tool, chemical analyzer, etc.) |
| | 207 | Refrigeration system having an evaporator or condenser in each zone |
| | 208 | Central system prioritizes heating and cooling requests from zones |
| | 209 | Supervisory central control means overrides zone controller |
| | 210 | Heat balancing using waste heat or cold (e.g., heat reclaim, etc.) |
| | 211 | Different conditioning means for perimeter zone and core zone |
| | 212 | Central temperature conditioned air supplied to each zone |
| | 213 |  Mixing within zone of recirculated zone air and supply air adjacent zone air inlet (e.g., induction unit, etc.) |
| | 215 | Reheat adjacent zone air inlet |
| | 216 | Mixing of separate centrally supplied hot and cold stream before discharge into each zone (e.g., dual-duct, etc.) |
| | 217 | Volume flow of discharged air at discharge into zone modulated by zone heating or cooling load (e.g., variable air volume, etc.) |
| | 218 | Central temperature conditioned liquid supplied to each zone |
| | 222 | Humidity control |
| | 223 | Humidity sensor measures humidity of air in conditioned space |
| | 224 | Additional humidity sensor (e.g., located outside of conditioned space, etc.) |
| | 225 | Humidity sensor controls indirect-contact cooling means |
| | 226 |  Liquid spray onto indirect-contact cooling means |
| | 227 | Air bypass of indirect-contact cooling means |
| | 228 | Reheat of cooled air downstream of indirect-contact cooling means |
| | 229 | Humidity sensor controls humidifier |
| | 230 | Dewpoint controlled (e.g., control of cooling means by downstream temperature sensor to maintain controlled dewpoint of downstream air, etc.) |
| | 231 | Congealed material (e.g., frost, etc.) or condensation removal or prevention |
| | 234 | Control of static pressure of conditioned space |
| | 236 | Control of heat storage |
| | 237 | Means responsive to occupancy of space |
| | 238 | Means storing set point for particular time of day (e.g., clock thermostat, etc.) |
| | 239 | Means to compute time required to reach certain temperature by certain time of day (e.g., morning warm-up, etc.) |
| | 240 | Heat pump and supplemental heat source |
| | 243 | Means to reset supply air temperature or supply water temperature as function of heat load |
| | 244 | Means to control fan or pump to regulate supply air flow or supply water flow |
| | 245 | Low flow during heating and high flow during cooling |
| | 246 | Responsive to pressure |
| | 247 | Responsive to temperature |
| | 248 | Flow of air from outdoors controlled (e.g., minimum outside air, etc.) |
| | 249 | Proportion of outdoor air and return air controlled |
| | 252 | Pre-heat or pre-cool of outdoor air before mixing with returned air |
| | 253 | Temperature sensor controlling temperature |
| | 254 | System selects heating or cooling mode automatically (e.g., responsive to season, ambient light, temperature in conditioned area, etc.) |
| | 255 | Dead band between heating and cooling |
| | 256 | Variable rate of heating or cooling (e.g., plural stages, etc.) |
| | 257 | Room and ambient temperature sensors |
| | 258 | Separate heating and cooling thermostats |
| | 259 | Single temperature sensing means |
| | 260 | Variable rate of heating or cooling (e.g., plural stages, etc.) |
| | 263 | Area receives conditioning from simultaneously operated heating and cooling means (e.g., opposed and compensating heating and cooling, etc.) |
| | 265 | Manual changeover between heating and cooling modes (e.g., manual override, etc.) |
| | 266 | Pre-heat or pre-cool of space or device during start-up |
| | 267 | Means to heat or cool for predetermined periods of time (e.g., duty cycle, time-temperature profiler, etc.) |
| | 268 | Predetermined time variable set point |
| | 269 | Duty cycle (e.g., pulse duration or pulse frequency modulation, etc.) |
| | 270 | Time delay |
| | 271 | Vehicle or engine speed responsive |
| | 272 | Control of heat pipe heat transfer characteristics |
| | 273 | Control of quantity of inert gas |
| | 274 | Control of vapor or liquid flow between evaporator and condenser sections (e.g., by variable restrictions, check valves, etc.) |
| | 275 | Control of amount of conductive gas in confined space between heat source and heat sink |
| | 276 | Control of variable thermal conductivity systems (e.g., heat valves, etc.) |
| | 278 | Vent of system (e.g., overpressure, overtemperature, removal of noncondensable, etc.) |
| | 279 | Pressure and temperature responsive or control |
| | 281 | Fluid pressure responsive or control |
| | 282 | Branched flow of heat exchange material |
| | 285 | Flow of one heat exchange material controlled by the pressure of another |
| | 286 | Flow of one heat exchange material controlled by its own pressure |
| | 287 | Temperature responsive or control |
