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| Number | Title | Issue Date |
| 7644754 | Heat recuperator with frost protection A recuperator for transferring thermal energy from a warm gas flow to a cold gas flow, comprising: a first group of ducts with a first connection and a second connection; a second group of ducts with a third connection and a fourth connection, wherein the ducts of b... | 01/12/2010 |
| 7562699 | Reversing circulation for heating and cooling conduits A fluid circulating apparatus for warming or cooling a surface includes a pressurized fluid source operative to circulate fluid through a conduit such that a supply fluid moves from a supply port of the fluid source into a first end of the conduit, through the condu... | 07/21/2009 |
| 7559356 | Electrokinetic pump driven heat transfer system A heat transfer system comprising a primary heat exchanger for receiving heat from a heat source; a secondary heat exchanger for exhausting heat to a heat sink; a conduit connecting the primary heat exchanger and the secondary heat exchanger; and an electrokinetic p... | 07/14/2009 |
| 7409986 | Method for controlling flow rate of ventilating air in air conditioner A method for controlling flow rates of outdoor air supplied to a room and room air discharged to an outside of the room in ventilation. The method of the present invention includes the steps of supplying outdoor air drawn through an air supply duct to a room at a fi... | 08/12/2008 |
| 7400942 | Apparatus for temperature control using a cycle rate control algorithm The present invention controls a room temperature by controlling an environmental control unit. A total span about a setpoint temperature is adjusted in accordance with a previous total span and a multiplicative factor. The multiplicative factor is periodically upda... | 07/15/2008 |
| 7293718 | Variable output heating and cooling control A heating or cooling system, such as an HVAC system, of variable output has a number of control elements and may include a variable speed compressor, a variable speed combustion (induced or forced draft) blower motor; a variable speed circulator blower motor; a vari... | 11/13/2007 |
| 7290600 | Air-to-air heat pump defrost bypass loop A system for defrosting an air-to-air heat pump system is disclosed. A bypass loop transfers refrigerant at a higher temperature and pressure than is normally cycled through the outdoor unit to an outdoor coil to defrost ice on the outdoor coil. The bypass loop incl... | 11/06/2007 |
| 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 |
| 7263847 | Electric refrigerator An electric refrigerator comprising a cooling space in which a temperature sensor is arranged and which is closable by a heat-insulating door. The temperature sensor is connected to a device which regulates the cooling temperature and is adjustable by a temperature-... | 09/04/2007 |
| 7238321 | Method for rapid thermal cycling of biological samples A thermal cycling method and device is disclosed. The device comprises a sample chamber whose temperature can be rapidly and accurately modulated over a range of temperatures needed to carry out a number of biological procedures, such a DNA polymerase chain reaction... | 07/03/2007 |
| 7216497 | Slope predictive control and digital PID control The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished, in the pr... | 05/15/2007 |
| 7172132 | Balanced utility load management A method and apparatus for controlling the operation of an air conditioning system and a plurality of auxiliary devices, with both the air conditioning system and the auxiliary devices being adapted to operate in a setback condition. The auxiliary devices are operat... | 02/06/2007 |
| 7131490 | Fan coil controller A fan coil controller for a hot and cold water system of a building that turns off the fan while the hot water and cold water coils are flushed. A fan coil control circuit is configured to periodically and temporarily operate a hot water flow control circuit and a c... | 11/07/2006 |
| 7117937 | Combined refrigerator-oven apparatus A combined refrigerator-oven (20) includes an enclosed chamber (28) having a top wall (22), a bottom wall (24), and vertical side walls (26). The refrigerator-oven (20) further includes a heating unit (50) and a refri... | 10/10/2006 |
| 7090480 | Method and apparatus for molding ceramic sheet A method and an apparatus capable of extrusion molding a comparatively wide, thin ceramic sheet using a screw extruder while suppressing the wrinkling thereof. The molding apparatus includes a screw-type extruder and a mold at the forward end of the extruder is used... | 08/15/2006 |
| 7055833 | Computer storage cart An improved computer storage cart is provided which comprises an interior space defined by a top portion and a bottom portion joined to spaced apart opposing sidewalls and a back portion. Further, a plurality of vertically spaced apart shelves are located in the int... | 06/06/2006 |
| 7051549 | Refrigerator A refrigerator is provided which includes a variable temperature storage formed in the chilling chamber; a heating room formed on a side of the variable temperature storage; a heating device installed in the heating room and configured to generate heat; a first loca... | 05/30/2006 |
| 7036575 | Forced air bed warmer/cooler An apparatus and method for modifying the temperature of a bed environment. In preferred embodiments, the invention is a self-contained, forced air bed warmer which pre-heats the interior sheets and covers of a bed to provide a controlled micro-environment that faci... | 05/02/2006 |
| 7036334 | Refrigerator having temperature controlled chamber A refrigerator having a temperature-controlled chamber, which stores food to be readily cooked without a thawing process. A cool air inlet port introduces cool air from the freezer compartment into the temperature-controlled chamber. The cool air inlet port is opene... | 05/02/2006 |
| 7024871 | Strategy for minimizing noise perception in a vehicle The present invention provides a method for masking noise in a motor vehicle that has a component that produces noise when operated. The method of the invention comprises monitoring the speed of the vehicle, and increasing the movement of the moveable part when the ... | 04/11/2006 |
| 7014447 | Extruder for welding plastic components An extruder for welding plastic components, comprising a front part for plasticizing and ejecting additional plastic welding material, and a rear part, for feeding and breaking up a continuous filament made of the additional plastic material. The rear part comprises... | 03/21/2006 |
| 7004246 | Air-to-air heat pump defrost bypass loop An improvement in defrosting an air-to-air heat pump system when in the heating mode. A bypass loop transfers refrigerant at a higher temperature and pressure than is normally cycled through the outdoor unit to an outdoor coil to defrost ice on the outdoor coil, The... | 02/28/2006 |
| 6993920 | Heater cycling for improved oil return A method comprises the steps of (a) providing a refrigeration unit having a refrigerated or heated space and at least one measured operating parameter, (b) providing heat to the refrigerated space when the at least one measured operating parameter exceeds a first th... | 02/07/2006 |
| 6986469 | Method and apparatus for energy recovery in an environmental control system Control apparatus for an environmental control system comprises input circuitry receiving environmental information and output circuitry for controlling an HVAC system. Processing circuitry in the controller configures the output circuitry based at least in part on ... | 01/17/2006 |
| 6961927 | Lossless, context-free compression system and method Lossless, context-free data compression is implemented using a data aware compression scheme that is specific to the type of data being compressed. A modified delta compression scheme is used in which difference information is encoded with reference to a set of typi... | 11/01/2005 |
| 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 |
| 6892807 | Seat with temperature control and ventilation and safety system for a vehicle Methods and apparatus for controlling the temperature of a seat such as a vehicle seat are disclosed. The apparatus includes an electrical heater disposed in the seat, a cooling unit such as a cooling element and a fan, a detector for detecting the temperature assoc... | 05/17/2005 |
| 6886352 | Vehicle air conditioner A vehicle air conditioner is controlled to directly lower the temperature of the interior equipment before a driver enters a vehicle, using an airflow from an air outlet. The air outlet can be placed on and/or against the interior equipment. The interior equipment c... | 05/03/2005 |
| 6843068 | Method and apparatus for adjusting the temperature set point based on humidity level for increased comfort Methods and apparatus for using humidity level to adjust the temperature set point of an HVAC system for increased occupant comfort. In one illustrative embodiment, the temperature set point for the inside space is moved downward when the humidity of the inside spac... | 01/18/2005 |
| 6802369 | Refrigerator quick chill and thaw control methods and apparatus A control system for a refrigerator quick chill and thaw system comprises an electronic controller coupled to the operable components of a modular air handler for producing a convective airstream in a sealed pan for rapid chilling and safe thawing. The controller is... | 10/12/2004 |
| 6779735 | Air ventilation control system A system that allows fresh air to be brought into a furnace as part of the return air circuit. This not only helps to replace stale air within a home, it also provides adequate air supplies to establish enough positive pressure within the dwelling to prevent air inf... | 08/24/2004 |
| 6662866 | Energy conservation moderating system An energy conservation moderating system has a DPDT switch (16) in switching communication intermediate a micro controller (8) and a temperature-difference generator (7). The micro controller is in switching control of the temperature-difference generator... | 12/16/2003 |
| 6658995 | Proofer A proofer includes an enclosure defining a chamber. An air circulation system includes a passageway having an air inlet and an air outlet connected to the chamber. A first fan pulls air into the air inlet from the chamber, and expels air from the outlet i... | 12/09/2003 |
| 6637667 | Method and apparatus for energy recovery in an environmental control system Control apparatus for an environmental control system comprises input circuitry receiving environmental information and output circuitry for controlling an HVAC system. Processing circuitry in the controller configures the output circuitry based at least ... | 10/28/2003 |
| 6628997 | Method for programming a thermostat A method for programming a thermostat, comprising the steps of providing a thermostat programmed to convert programming codes into time-temperature schedules; determining a desired time-temperature schedule; developing a programming code corresponding to ... | 09/30/2003 |
| 6615914 | Programmable, heatable, coolable reaction vessel utilizing phase change refrigeration A reaction vessel system includes a reaction vessel, a cooling unit functionally connected to the vessel to impart controlled cooling thereto; a heating unit functionally connected to the vessel to impart controlled heating thereto; and control means conn... | 09/09/2003 |
| 6575233 | Combination radiant and forced air climate control system A method utilizing a 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 si... | 06/10/2003 |
| 6564699 | Proofer and process for producing extended shelf life yeast-raised baked goods and extended shelf life yeast-raised baked goods A proofer (10) is disclosed for making yeast-raised baked goods having an extended shelf life. The proofer includes a proofing chamber (12) in which heat, humidity, and airflow are more uniform. A process is provided for proofing the raw dough to provide ... | 05/20/2003 |
| 6497276 | Combined refrigerator-oven apparatus A combined refrigerator-oven (20) includes an enclosed chamber (28) having a top wall (22), a bottom wall (24), and vertical side walls (26). The refrigerator-oven (20) further includes a heating unit (50) and a refrigeration unit (70). A controller (118)... | 12/24/2002 |
| 6223992 | Air-conditioning system with timer device An air-conditioning system has an air-conditioning unit and a controller which includes a timer setting unit for establishing data including at least one time zone in the time of one day and an operation status in the time zone for the air-conditioning un... | 05/01/2001 |
