William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7287392 | Method and apparatus for operating a water cooler A method for operating a water cooler, wherein the water cooler includes a cooling system, a storage compartment assembly, a water dispenser assembly, and a climate control assembly including a thermostat and a control capillary, includes coupling the control capill... | 10/30/2007 |
| 7243004 | Self-configuring controls for heating, ventilating and air conditioning systems A system for self-configuring complex HVAC systems has each of several units provided with a microprocessor control. The several units are each available in various optional styles, sizes, etc. The microprocessors provide information to a central control of the part... | 07/10/2007 |
| 7231424 | Active control of collaborative devices Controlling collaborative devices, including providing at least two collaborative devices, in which each collaborative device includes a client device and a client communications application, each collaborative device being coupled for data communications to an OSGi... | 06/12/2007 |
| 7222665 | Vehicle air conditioning system with air temperature sensor A vehicle air conditioning system uses a non-contact temperature sensor for feedback control of the temperature of the air blown out from a blowing opening. The degrees of opening of an air mix damper and a bypass open/close damper are controlled by actuators that r... | 05/29/2007 |
| 7188779 | Zone climate control A zone climate control system and method of its operation. A zone can be a single room. A method for determining which zones' vents are to be closed, and which are to be opened, in performing heating or cooling, circulation to heat or cool a zone by mixing its air w... | 03/13/2007 |
| 7026929 | Food information monitoring system Systems and methods for gathering data, representative of food condition information, from a plurality of remote locations and providing the information to a user together with information about the locations from which the information was gathered. The sensors may ... | 04/11/2006 |
| 7017659 | Vehicle air-conditioning system A vehicle air-conditioning system adjusts the temperature at an outlet by a combined amount of air flowing through a first bypass passage adjusted by an air mixing door and air flowing through a second bypass passage adjusted by a cool air adjusting door independent... | 03/28/2006 |
| 6957696 | Combination radiant and forced air climate control system A method and controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling d... | 10/25/2005 |
| 6945323 | Automotive air conditioning system An automotive air conditioning system includes: an air conditioning duct having an outlet; an evaporator; a heater core; an air mix door that divides air passing through the air conditioning duct into to pass through the heater core and to bypass the heater core; an... | 09/20/2005 |
| 6935571 | Air diffuser A diffuser comprising a casing (10), a first temperature sensitive element (32) for sensing room temperature variations and including a body and a piston which move relatively to one another in response to temperature variations, a second temperature s... | 08/30/2005 |
| 6454178 | Adaptive controller for an automotive HVAC system A multi-zone climate control system and method for a vehicle. The system comprises a passenger seat occupancy detector at each of a plurality of passenger seats for generating a respective seat occupancy signal indicative of an occupancy condition of a re... | 09/24/2002 |
| 6202934 | Air conditioner for a vehicle having infrared ray sensor An air conditioner for a vehicle which accurately estimates a thermal load to enhance inside temperature controllability. The air conditioner comprises a first surface temperature sensor for detecting a temperature of an internal surface region of a vehic... | 03/20/2001 |
| 6027031 | Method and apparatus for changing operational modes of a transport refrigeration system A method and apparatus for changing operational modes of a transport refrigeration unit, where the unit is capable of operating in a continuous heating/cooling mode or an automatic start/stop heating/cooling mode. A supply air temperature sensor measures ... | 02/22/2000 |
| 5860594 | Method and apparatus for changing operational modes of a transport refrigeration system A method and apparatus for changing operational modes of a transport refrigeration unit, where the unit is capable of operating in a continuous heating/cooling mode or an automatic start/stop heating/cooling mode. A supply air temperature sensor measures ... | 01/19/1999 |
| 5762265 | Air-conditioning control unit Complaint rate calculation means for calculating complaint rates in consideration of thermal feeling entered from vote value input means, a data storage unit for storing complaint rates together with indoor thermal conditions, updating means for calculati... | 06/09/1998 |
| 5743104 | Temperature controlling method for refrigerator and apparatus therefor A temperature controlling method for a refrigerator and an apparatus therefor are provided, in which a sensing error between temperature sensors is corrected, thereby maintaining the interior temperature of the refrigeration compartment in equilibrium. Th... | 04/28/1998 |
| 5494097 | Method and device for regulating or controlling the temperature of an interior space, especially that of a motor vehicle A method and device is provided for regulating or controlling the temperature of an interior, especially for a motor vehicle. An interior temperature regulation mode is provided if an interior temperature sensor and a blowing-out temperature sensor have b... | 02/27/1996 |
| 5407129 | Poultry environmental control systems and methods A poultry house controller (14) situated within a poultry house (12) regulates the relative humidity and temperature within the poultry house (12) via actuation of fans (22) and heaters (24) in response to temperature and humidity feedback signals from te... | 04/18/1995 |
| 5293928 | Air-conditioner for automobiles An automobile air-conditioner wherein a controlled variable used to determine the control mode of a component of the air-conditioner is corrected or restricted according to the amount of shifting of the head part setting temperature for driving the compon... | 03/15/1994 |
| 5294051 | Valve controller for hot water heating system A valve controller for a hot water heating system having a water heating device, a water circulating device, and heater device. The Controller operates a water control valve between an open and a closed position, the valve controller comprising, a flow ti... | 03/15/1994 |
| 5244035 | Air-conditioner for automobiles An automobile air-conditioner wherein a controlled variable used to determine the control mode of a component of the air-conditioner is corrected or restricted according to the amount of shifting of the head part setting temperature for driving the compon... | 09/14/1993 |
| 5176201 | Vehicular air conditioner with manually operated bypass door operable only in full cool mode An automatic air conditioner for an automotive vehicle is arranged to be controlled by a control system and comprised of a heater unit disposed within an air conditioner duct to heat air inducted through an air inlet. A bypass air passage is provided to f... | 01/05/1993 |
| 5152335 | Automobile air conditioning system with cool air bypass passage having manual control mode An automobile air conditioning system has a bypass air passage for directing air, before it is heated, to a car interior via a vent outlet. A bypass door is disposed in the bypass air passage, which has an opening which is automatically controlled accordi... | 10/06/1992 |
| 5125572 | Hot water heating control system A hot water heat control system for a building having a given boundary layer heat loss characteristic is described. The heating system, which includes a water heating device, a water circulation loop, and a mechanism for varying the amount of heat to the ... | 06/30/1992 |
| 5003785 | Air-conditioning system for a vehicle An air-conditioning system controls the temperature of the air flow such that a deviation of an interior temperature of the passenger compartment of the vehicle determined by an interior temperature sensor from a givable desired temperature becomes minima... | 04/02/1991 |
| 4966012 | Air-conditioner for automobile An automobile air-conditioner wherein a total signal corresponding to a thermal load in the passenger compartment of an automobile and a head part total signal corresponding to a thermal load in the vicinity of the head of an occupant of the passenger com... | 10/30/1990 |
| 4966011 | Air-conditioning for automobiles In an air-conditioner for automobiles, cooled air having passed through an evaporator is immediately introduced through a cooled air bypass passage into the vehicle passenger compartment. The opening of a bypass door disposed in the bypass passage is adju... | 10/30/1990 |
| 4962302 | Control apparatus for automobile air-conditioners An apparatus for controlling an automobile airconditioner includes a discharge mode selection device for selecting a discharge mode depending on the magnitude of a discharge mode changeover criterion signal calculated based on at least a vehicle compartme... | 10/09/1990 |
| 4637349 | Boiler cycling controller In a system for controlling a number of central heating boilers of large capacity having means for switching-off each boiler when the flow temperature reaches a predetermined maximum, the temperature at which each boiler is switched on again can be automa... | 01/20/1987 |
| 4560106 | Heating and/or air-conditioning installation for motor vehicles In a heating and/or air-conditioning system for motor vehicles with a temperature sensor in the head space and a temperature sensor in the leg space as component parts of an interior space temperature regulating installation, the temperature sensors are s... | 12/24/1985 |
| 4495986 | Method of operating a variable volume multizone air conditioning unit A variable volume multizone unit is disclosed for simultaneously supplying variable amounts of cool, warm or neutral air to each zone, as required. The unit is under the overall control of a computer and controls dampers located at the unit to regulate th... | 01/29/1985 |
| 4450897 | Air-conditioning method and system for an automotive vehicle An air-conditioning method and system controls the temperature of air outputted from an air conditioner outlet duct into the passenger compartment of a vehicle at a constant level, with a small time constant of recovery, by adjusting the air mix door open... | 05/29/1984 |
| 4404815 | Air conditioning economizer control method and apparatus An air conditioning economizer control method and apparatus for integrating the operation of the economizer with an air conditioning system is disclosed. An economizer position control arrangement is further disclosed incorporating a rotor locking circuit... | 09/20/1983 |
| 4298056 | Heat pump setback temperature control with cold weather override A multistage timer control setback thermostat control system maintaining a normal temperature in a space and during selected time periods a reduced temperature wherein a first stage is a refrigeration heat pump, the operation of which is affected by outdo... | 11/03/1981 |
| 4277019 | Electrically-controlled damper A novel fluid-flow control damper is disclosed. The damper comprises a freely pivotable closure situated in a fluid-flow conduit, such as an air duct. The closure is maintained in a closed position by a simple latching means, and may be maintained in an o... | 07/07/1981 |
| 4100428 | Control system for limiting the electrical consumption of a distribution network The control system permits limiting the electrical demand of a distribution network to a desired maximum value by regulating the temperature of one or more thermal loads with heating or cooling elements; this system includes: means for measuring the insta... | 07/11/1978 |
| 3930611 | Air conditioning control system and method A multiple zone air conditioning control system is disclosed in which air temperatures in respective individual zones are governed according to signals derived from sensed air temperatures in the respective zones and sensed temperature of air discharged t... | 01/06/1976 |