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| Number | Title | Issue Date |
| 7402780 | Thermostat for a heat pump or conventional heating system A thermostat is provided comprising a first connector for connecting to an air conditioner, a second connector for connecting to either a conventional heater or a heat pump reversing valve, and a selection means for selecting from at least a first mode of operation ... | 07/22/2008 |
| 7325972 | Method for determining an interior temperature of a passenger area of a motor vehicle, arrangement for execution of the method, and a temperature sensor A signal (Snormal) is provided to a heat element of a temperature sensor, which is recorded as a step response (Lruh, Lbew). From the difference of the step response compared with the reaction adaptively determined with the temperatu... | 02/05/2008 |
| 7274972 | Programmable controller with saving changes indication A programmable controller such as an HVAC controller that provides a confirmation message to a user indicating that a parameter that has been modified by the user has been or will be saved. Such a confirmation message may help assure a user that their program modifi... | 09/25/2007 |
| 7212887 | Service and diagnostic tool for HVAC systems An HVAC system includes a portable controller unit which communicates with an indoor HVAC component and an outdoor HVAC component over a digital communication bus. A multiple of docking stations each in communication with the data bus are located at a multiple of lo... | 05/01/2007 |
| 7142948 | Controller interface with dynamic schedule display A controller includes a programmable schedule and a user interface, adapted and configured to illustratively display at least a portion of the programmable schedule along a time axis and a current time indicator positioned to indicate the current time along the time... | 11/28/2006 |
| 7135965 | Hazardous condition detection system and method and thermostat for use therewith An intelligent thermostat communicates with threat detectors to allow periodic remote testing of the detector. The real-time clock and calendar functions of the thermostat allow the consumer to program the day, time, and frequency of the testing. The thermostat then... | 11/14/2006 |
| 7028912 | Programmable thermostat incorporating a display screen selectively presenting system modes that includes a simple mode A programmable thermostat, with a touch screen liquid crystal display having the capability to change from a more complex first mode display to a simple mode display for users with adaptive, learning or visual impairments that limit their ability to use the relative... | 04/18/2006 |
| 7003378 | HVAC control using different access levels Systems and methods are described for a HVAC control system. A method, includes regulating user access to an interactive user interface of a programmable thermostat, each user identified by a personal identification number associated with a user type such as, for ex... | 02/21/2006 |
| 6624394 | System for obtaining a uniform air temperature in a discrete space A system for supplying air to a discrete space to obtain a desired set point temperature within the space includes a plurality of units for conditioning the air in the space. Each of the units has an independent electric power supply cord for connection t... | 09/23/2003 |
| 6036633 | Dual incubator temperature control system An infant incubator having a heating system that provides a flow of heated air into the infant compartment and which exhausts air from the infant compartment. A temperature sensor is located in the air inlet of the warm air into the infant compartment and... | 03/14/2000 |
| 5735456 | Universal retrofit valve actuator and system An actuator has a drive gear set to interact with a driven lug to rotate the lug and whatever the lug is fixed to. The actuator must be separately anchored to interact with the lug. The drive gear and the lug have cams that are spaced apart, so that when ... | 04/07/1998 |
| 5656493 | System for automated performance of the polymerase chain reaction There is disclosed herein a machine for performing nucleic acid amplification under computer control. The machine utilizes any one of a number of heating and cooling systems under control of a host computer which directs the heating and cooling systems to... | 08/12/1997 |
| 5636786 | High efficiency gas furnace A high efficiency gas furnace utilizes a unique pre-mixed design in combination with a pressurized/high velocity combustion process. The combustion process occurs in a combustion chamber and the high temperature high velocity products of combustion follow... | 06/10/1997 |
| 5590831 | Menu driven remote control for a room air conditioner The remote control unit for an air conditioner having a controller configured to process multiple temperature inputs, to provide a cycle of operation to provide comfort during sleeping, to provide an automatic cycle of operation wherein a burst of cooling... | 01/07/1997 |
| 5582021 | Air-conditioning control method for a vehicle An air-conditioning control method for a vehicle which can continue smoothly control close to ordinary automatic control before failure even when a specific detection sensor goes wrong. When one of the plurality of detection sensors malfunctions, the size... | 12/10/1996 |
| 5573180 | Protective thermostat A thermostat monitors the indoor air temperature indicated by the thermostat's indoor air temperature sensor. The monitored indoor air temperature must be within a predefined range of acceptable temperatures to be considered valid. In the event the monito... | 11/12/1996 |
| 5533349 | Determination of ambient air temperature outside of an appliance A method for determining ambient air temperature outside of an appliance by making measurements inside the appliance. By measuring the time it takes a sensor to change inside the appliance from one temperature reading to another reading, the ambient tempe... | 07/09/1996 |
| 5524447 | Temperature control method of refrigerator When a user manually sets a desired (target) temperature for a refrigerator chamber, a control mechanism automatically determines a range of target temperatures having upper and lower limits. Actuation and deactuation of the refrigeration cycle is control... | 06/11/1996 |
| 5518065 | Control method of vehicle air-conditioning apparatus An air conditioning control method of a vehicle includes the step of determining a target temperature of a passenger compartment of the vehicle, calculating a comfort index provided as a function of at least an outlet air temperature and outlet air volume... | 05/21/1996 |
| 5472141 | High efficiency gas furnace A high efficiency gas furnace utilizes a unique pre-mix design in combination with a pressurized/high velocity combustion process. The combustion process occurs in a combustion chamber and the high temperature high velocity products of combustion follow a... | 12/05/1995 |
| 5400963 | Method and apparatus for controlling vehicle air conditioner This invention has as its object to provide a method and apparatus for controlling a vehicle air conditioner, which can obtain a combination of an outlet air flow rate Va and an outlet air temperature To, which is desirable for comfo... | 03/28/1995 |
| 5294047 | Electronic thermostat timer In an electronic thermostat timer having a time-keeping switch and having a thermostat, having an optoelectronic display (6) arranged at the front side of the housing for the time of day, the switching times and the switching temperatures, having a manual... | 03/15/1994 |
| 5293755 | Air conditioning load management control system A load management control system is provided for an air conditioner. The system includes an outdoor temperature sensor for sensing outdoor temperature of the outside of an enclosure to be air-conditioned and an indoor temperature sensor for sensing an ind... | 03/15/1994 |
| 5275011 | Method of operating a refrigeration system A method of operating a refrigeration system having a compressor driven by an engine, with the refrigeration system being operable in a first control mode to hold the temperature of a conditioned space at a selected set point temperature, and in a second ... | 01/04/1994 |
| 5211331 | Control in combination with thermostatically responsive assembly A control assembly in combination with a thermostatically responsive apparatus. In a preferred mode the principles of the present invention are applied to an infra-red heating system of the type including burner assemblies (12, 12') connected in series by... | 05/18/1993 |
| 5115967 | Method and apparatus for adaptively optimizing climate control energy consumption in a building A computer (37) or microprocessor-based thermostat system (10) for automatically determining and implementing an optimum thermostat setback schedule (80) which, while maintaining a user-specified occupancy comfort schedule (39), minimizes the energy consu... | 05/26/1992 |
| 4941525 | Automotive air conditioner An air mixing type automotive air-conditioner is disclosed in which an air fed by a blower is heated to a hot air by a hot water type heater, and a mixture ratio between a cold air flowing through a bypass passage around the heater and the hot air is adju... | 07/17/1990 |
| 4881822 | Outdoor temperature sensing assembly An outdoor temperature sensing assembly includes a temperature sensor such as a thermocouple having a given length mounted inside a thermal mass of low thermal conductivity. This thermal mass is mounted on a mounting plate and shielded by an upper wall, t... | 11/21/1989 |
| 4832258 | Measuring circuit for use in device for detecting ambient air temperature A device for controlling an opening angle of an air mixing damper used in an automotive air conditioning system is disclosed. The device has an actuator for operating the air mixing damper and a blower for blowing the air. The device comprises an ambient ... | 05/23/1989 |
| 4795088 | Air conditioning system A duct type air conditioning system with a variable capacity blower in which the maximum blower capacity is established at initialization of the system at the optimum blower capacity. The optimum capacity is established by varying the capacity of the blow... | 01/03/1989 |
| 4793553 | Infrared thermostat control A system for automatically controlling heating and air conditioning equipment that make up the environmental control system in a building. The system measures heat flow into and out of the building by means of an infrared sensor mounted on an inner wall a... | 12/27/1988 |
| 4775944 | System for controlling air conditioning and/or hot water supplying apparatus A control system for air conditioning and/or hot water supplying apparatus using a central heat source supplies cooling or heating to a plurality of dwelling units of a congregated or multi-storied house. The system calculates the optimum operating condit... | 10/04/1988 |
| 4750546 | Automatic baseboard damper system Radiator housing assembly, for a hydronic baseboard heater for heating a room or area, forming a part of an overall building or zone heating system having a master thermostat, said assembly having a damper which is positionable between open and closed pos... | 06/14/1988 |
| 4719763 | Device for changing the temperature of a room A device for changing the temperature in a room includes: a refrigerant circuit including a refrigerant compressor, a condenser and an evaporator for receiving condensed refrigerant from the condenser; a cooling circuit including a cold accumulator for co... | 01/19/1988 |
| 4688273 | Sanitary system for supply of hot and cold water, and thermostatically controlled valve for such system A sanitary system for thermostatically controlled supply of hot and cold water to a number of tapping locations includes a hot water storage container, piping to the tapping locations, thermostatically controlled mixing valves and tapping faucets or valve... | 08/25/1987 |
| 4459815 | Air conditioner An air conditioner includes a plurality of refrigerant compressors, a plurality of ventilating fans and a cooling/warming water pump which is controlled by both a memory and a contact-less control unit in accordance with an outdoor temperature and a refri... | 07/17/1984 |
| 4396148 | Heating system control device A heating system control device is responsive to the drop in outside temperature to below a predetermined weatherhead set point for turning on a heating system to be controlled. Upon the establishment of the heat in the heating system, a defined heating c... | 08/02/1983 |
| 4381074 | Air-conditioning method and system for an automotive vehicle An air-conditioning method and system for an automotive vehicle according to the present invention automatically maintains the temperature of air within the passenger compartment at a value preset by a passenger compartment air temperature presetting devi... | 04/26/1983 |
| 4335299 | Thermostatic control for electric roof heating cable A thermostatic control for electric cables used on overhanging eaves of pitched roofs in northern climates, and in rain gutters and downspouts, comprises a high temperature-limit switch and a low temperature-limit switch connected in series circuit for co... | 06/15/1982 |
| 4293028 | Arrangement for controlling room temperature An arrangement for controlling room temperature in conjunction with a heating or air conditioning system which operates throughout successive and uniform periods of time, each period of time being divided into a first time interval and a second time inter... | 10/06/1981 |
