Patents for G05D 23 - Control of temperature (28,546)
02/1979
02/20/1979US4140274 Control device for a warm air furnace
02/13/1979US4139153 Electronic reversible motor operated valve assembly
02/13/1979US4139151 Electric thermal switch valve
02/13/1979US4139150 Slide valve
02/13/1979US4139139 Process for manufacturing butt-welded steel pipe
02/06/1979US4138607 Dual priority temperature control
02/06/1979US4137964 Controllable heat transmission apparatus
02/06/1979CA1048125A1 Sensing circuit with a four terminal insulated gate semi-conductor device
01/1979
01/30/1979US4136732 Method and apparatus for controlling air-conditioning systems
01/30/1979US4136528 Refrigeration system subcooling control
01/23/1979US4136392 Load cycling with space temperature feedback
01/23/1979US4136324 Expansion box temperature regulator for electric appliances
01/23/1979CA1047141A1 Digital temperature controller
01/23/1979CA1046735A1 Separable top end construction for emergency opening slide fasteners
01/16/1979US4135081 Electric cooking plate with a temperature limiter
01/16/1979US4134543 Snap action thermally responsive fluid control valve
01/16/1979US4134542 Thermopneumatic actuator
01/16/1979US4134447 Infrared, semiconductor laser diode for maintaining constant temperature
01/16/1979CA1046580A1 Condition responsive modulated current regulator
01/16/1979CA1046213A1 Method of and apparatus for making polymeric film
01/09/1979US4134005 Method and device for controlling the temperature variation in a potter's oven
01/09/1979US4133478 Temperature responsive valve
01/09/1979US4133349 Condition responsive by-pass valve construction and method of making the same
01/02/1979US4132355 Electronic temperature control system
01/02/1979US4132239 Fluid valve for microwave devices
01/02/1979US4132086 Temperature control system for refrigeration apparatus
12/1978
12/26/1978US4131786 Remotely controllable electric oven
12/26/1978CA1045197A1 Temperature limiting wattage control for a ceramic cooking platform
12/26/1978CA1045099A1 Thermostat unit for central heating radiators
12/19/1978US4130853 Glow plug temperature circuit
12/19/1978US4130762 Arrangement for the automatic heating and adjustment of a treatment temperature for the treatment of workpieces by means of glow discharge
12/19/1978US4130753 Control systems
12/19/1978US4130104 Glow wire ignition with on/off and hot warning means for gas heated stove
12/19/1978US4129993 Refrigeration equipment, particularly household refrigeration or the like
12/12/1978US4129118 Method and apparatus for providing differential temperature thermostat control for solar hot water systems
12/05/1978US4128203 Four-port thermally responsive valve
11/1978
11/28/1978US4127765 Anti-condensation system for refrigerator doors
11/28/1978CA1043446A1 Building heating and cooling system
11/21/1978US4126430 Packed bed temperature control
11/21/1978US4126269 Ventilated enclosure
11/21/1978CA1042755A1 Valve assembly for use in an air distribution system
11/14/1978US4125221 Temperature-dependent liquid metal flowrate control device
11/14/1978US4125107 Universal differential thermostat for solar heating system
11/14/1978CA1042531A1 Temperature sensitive control circuit
10/1978
10/31/1978US4123796 Controller for environmental conditioning apparatus
10/31/1978US4123739 Thermostat control
10/31/1978US4123002 Heating and ventilation system
10/24/1978US4121763 Fluid temperature transducer
10/24/1978US4121762 Automatic fluid flow regulator
10/24/1978US4121761 Thermostatically controlled mixing valve for sanitary devices
10/17/1978US4120322 Hydro-fluidic temperature sensor and control system
10/17/1978CA1040496A1 Condition responsive control device
10/10/1978US4119936 Thermostat controller
10/10/1978US4119835 Electronic thermostat
10/10/1978CA1040287A1 Refrigeration system and control therefor
10/03/1978US4118621 Photo electric biased photo diode operational amplifier
10/03/1978US4117976 Multi-function thermostatic valve
10/03/1978US4117881 System for and method of freezing biological tissue
10/03/1978CA1039827A1 Temperature responsive cooking timer
09/1978
09/26/1978US4117307 Control system for charging and discharging an electric storage heater
09/26/1978US4116380 Control device for a central heating installation
09/26/1978US4116377 Mixer unit with thermostat-controlled valves
09/26/1978US4116219 Differential thermostatic controller for solar heating system
09/19/1978US4115860 Plural load power controller with time-shared processor
09/19/1978US4114808 Pressure biased pneumatic thermostat
09/19/1978US4114807 Control system
09/19/1978US4114682 Apparatus for heating, cooling or air-conditioning a room
09/19/1978US4114681 Thermostat, method of operating such electrical circuit and method of heating a temperature sensing means
09/19/1978US4114397 Evaporator
09/19/1978CA1038917A1 Method and device for continuous control and regulation of the thermal parameters in metallurgical ovens
09/12/1978US4114129 Thermally responsive actuator
09/12/1978US4114024 Feedback-controlled radiant furnace for firing ceramic material and the like
09/12/1978US4114023 Heater control for rotary members
09/12/1978US4113174 Temperature controlled valve assembly
09/12/1978US4113005 Waste heat boiler temperature control system
09/12/1978US4112703 Refrigeration control system
09/12/1978US4112588 Drier appliance control
09/05/1978US4111643 Vent control for a thermal system
09/05/1978US4111443 Control system for energizing electrical resistance heaters in cooking fluids
09/05/1978US4111048 Fluid parameter sensing apparatus
08/1978
08/29/1978US4110827 Load cycling with space temperature feedback
08/29/1978US4110632 Device, method and system for controlling the supply of power to an electrical load
08/29/1978US4110601 Control system and method and control device therefor
08/29/1978US4110600 Thermostatically controlled plural heat output portable electric space heater
08/29/1978US4110588 Indirect induction apparatus for heating fluids
08/29/1978US4109639 Solar heating system
08/29/1978CA1037596A1 Multi-product cooking computer
08/29/1978CA1037232A1 Slide fastener end stop
08/22/1978US4109225 Temperature regulator and safety thermostat
08/22/1978US4109134 Power control circuit and electro(photo)graphic apparatus employing same
08/22/1978US4109129 High frequency energy apparatus having automatic final temperature compensator
08/22/1978US4108375 Control device and process for heating an installation
08/22/1978US4108372 Engine control system and a differential vacuum regulator therefor or the like
08/22/1978US4108188 Sand cooler control system
08/22/1978US4107941 Environmental control system
08/15/1978US4107466 Individual room energy control system
08/15/1978US4106691 Valve arrangement for refrigeration plants
08/01/1978US4103824 Thermostat for coolant presented as switch specifically for combustion engines
07/1978
07/25/1978US4102495 Heat control device
07/25/1978US4102389 Heat pump control system