Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8132420 | Variable evaporator water flow compensation for leaving water temperature control A method of controlling a refrigerant chiller system is particularly suited for chillers where the water being chilled (or some other liquid) flows through the chiller's evaporator at a flow rate that is variable and is not directly known. To effectively control the... | 03/13/2012 |
| 7870751 | Temperature control system and substrate processing apparatus A temperature control system and a substrate processing apparatus are provided. The temperature control system for controlling temperatures of one or more members of a substrate processing apparatus includes a circulation system for circulating a first coolant to pa... | 01/18/2011 |
| 7832223 | Controller area network based climate control system for a self-propelled work machine and method of operation of the same A controller area network based climate control system for a work machine, and a method of operation of the same, which advantageously and economically integrates into and utilizes the resources and capabilities of a CAN of a work machine, including, but not limited... | 11/16/2010 |
| 7788937 | Refrigeration system If the degree of opening of an electronic expansion valve (14) is kept below a specified degree of opening or if the degree of superheat of refrigerant at an evaporator (15) side is kept above a specified degree of superheat, the amount of circulating ... | 09/07/2010 |
| 7765818 | Refrigeration unit and diagnostic method therefor A refrigeration unit and diagnostic method therefore are provided. The refrigeration unit includes: a housing with an insulated cavity for storing food and beverages; a vapor cycle system operative to cool the food and beverages in the insulated cavity; a plurality ... | 08/03/2010 |
| 7506520 | Method for controlling operation of refrigerator A method for controlling operation of a refrigerator to enable independent cooling of a freezing chamber and a refrigerating chamber. The method prevents temperature rising of the refrigerator by controlling a refrigerant passage switching valve after stopping opera... | 03/24/2009 |
| 7490480 | Variable speed refrigeration system A refrigerator incorporates a variable speed refrigeration system including a variable speed compressor, a variable speed evaporator fan, a variable speed fresh food compartment stirring fan and a variable position damper. Various temperature sensors are provided to... | 02/17/2009 |
| 7475558 | Control of a heating and cooling system for a multi-level space A heating and cooling system for a multi-level space is provided that comprises at least one lower level return air duct and at least one upper level return air duct, and a thermostat for controlling the operation of the heating or cooling system through either a lo... | 01/13/2009 |
| 7441414 | Method for pre-cooling automotive vehicle passenger compartment The present invention concerns a method for pre-cooling the passenger compartment of an automotive vehicle. The vehicle includes at least one electrically actuatable window and a HVAC system having at least a controller, a blower, a passenger compartment temperature... | 10/28/2008 |
| 7434416 | Air-conditioning system An air-conditioning system includes a refrigeration cycle and a control unit. The refrigeration cycle includes an electric compressor in which a compression mechanism for drawing a refrigerant therein for compression is integrated with an electric motor for driving ... | 10/14/2008 |
| 7406835 | Cooling system and method for cooling a heat producing system A cooling system for cooling a plurality of heat producing systems includes a heat exchanger having a plurality of cooling zones, each of which has a respective inlet and outlet for facilitating flow of a respective temperature control fluid therethrough. Each of th... | 08/05/2008 |
| 7366588 | System and method for managing indoor air through cooperation between air conditioner and mobile assistant device A method and system for efficiently managing indoor air through cooperation between a mobile device and a stationary air conditioner. The system may include at least one stationary air conditioner and at least one mobile assistant device that move with a predetermin... | 04/29/2008 |
| 7366632 | Method and apparatus for three-dimensional measurements An apparatus and method for measuring the physical quantities of a data center during operation and method for servicing large-scale computing systems is disclosed. The apparatus includes a cart that supports a plurality of sensors. The cart is moveable within the d... | 04/29/2008 |
| 7356912 | Method for ventilating a seat The present invention is directed towards a method of forming a ventilated seat. More specifically, in one aspect, the present invention is directed towards providing an insert in fluid communications with an air mover and a seating surface, wherein the system optio... | 04/15/2008 |
| 7340906 | HVAC desiccant wheel system and method An HVAC system includes a desiccant wheel, wherein the wheel's speed varies with airflow, the wheel is energized for at least a set period at startup, and/or a heat recovery system (e.g., an air-to-air heat exchanger) upstream of the wheel enhances the system's abil... | 03/11/2008 |
| 7340912 | High efficiency heating, ventilating and air conditioning system A primary air flow path has a pre-cooler and an evaporator. A secondary air flow path includes portions of an air conditioner assembly including a compressor and an condenser. The air conditioner assembly also has lines connecting the compressor and the condenser th... | 03/11/2008 |
| 7337623 | Fuzzy-logic based controller to regulate aircraft temperature Temperature regulation by means of a PID regulation method can be associated with disadvantageous oscillations, overshooting and long control times. According to an exemplary embodiment of the present invention, during temperature regulation of a space, non-linear f... | 03/04/2008 |
| 7334419 | Heat pump water heater A heat pump water heater system including a water storage tank and a heat exchange system. The heat exchange system includes a heat absorber positioned below the water storage tank and a heat rejecter in fluid communication with the heat absorber and positioned with... | 02/26/2008 |
| 7316120 | Refrigeration/air conditioning equipment Refrigeration/air conditioning equipment includes a first internal heat exchanger for exchanging heat between a refrigerant to be sucked in a compressor and a high-pressure liquid refrigerant, an injection circuit for evaporating a bypassed high-pressure liquid at i... | 01/08/2008 |
| 7315448 | Air-cooled heat generating device airflow control system A system for controlling airflow around an air-cooled heat generating device includes a cooling fluid line and heat exchangers positioned along the cooling fluid line to cool airflow around components in the heat generating device. The heat exchangers are positioned... | 01/01/2008 |
| 7313924 | Correlation of vent tiles and racks In a method for correlating vent tiles with racks, the vent tiles are opened to a first setting and the mass flow rates of air received by the racks and supplied through the vent tiles are determined. In addition, one of the vent tiles is closed to obtain a second s... | 01/01/2008 |
| 7311439 | Cooling system and method to cool a gantry A cooling system is provided for components of a computer tomography system that are arranged in a gantry housing. The cooling system includes a cooled air feed device with an air compressor and connected streaming elements that are arranged and/or fashioned such th... | 12/25/2007 |
| 7313461 | Data connectivity with a robotic device A method for data connectivity in a room with a robotic device. In the method, at least one condition is detected with a plurality of sensors and the detected at least one condition is communicated from the sensors to associated access points. One or more of the acc... | 12/25/2007 |
| 7310966 | Universal direct current brushless air conditioning system A universal direct current brushless air conditioning system preferably includes a blower unit and a compressor unit. The blower unit preferably includes an evaporator, at least one inlet fan, at least one outlet vent, a direct current controller, a thermostatic exp... | 12/25/2007 |
| 7305844 | Combined type air conditioner A combined type air conditioner is disclosed, by which manufacturing or assembly of the air conditioner is facilitated. The present invention includes a cabinet forming an exterior of the air conditioner to suck and blow an air by driving a blowing fan and an air gu... | 12/11/2007 |
| 7286351 | Apparatus and method for facilitating cooling of an electronics rack employing a closed loop heat exchange system Apparatus and method are provided for facilitating cooling of an electronics rack employing a closed loop heat exchange system. The closed loop heat exchange system includes a first heat exchanger, a second heat exchanger, and a coolant distribution loop connecting ... | 10/23/2007 |
| 7275533 | Pressure controller for a mechanical draft system Systems and method for controlling the flow of air through a mechanical draft system are disclosed herein. A pressure controller for controlling air pressure comprises an appliance controller configured to control the operation of a plurality of appliances, an intak... | 10/02/2007 |
| 7275385 | Compressor with vapor injection system A heat pump system includes a first heat exchanger, a second heat exchanger in fluid communication with the first heat exchanger, a scroll compressor in fluid communication with each of the first and second heat exchangers, and a flash tank in fluid communication wi... | 10/02/2007 |
| 7272945 | Environmental condition measurement system A system for detecting at least one environmental condition in a room. The system includes one or more detecting devices having a sensor configured to detect the at least one environmental condition and to display the detected at least one environmental condition. T... | 09/25/2007 |
| 7266974 | Beverage dispensing with cold carbonation Methods and apparatus for cold carbonation are provided in which a carbonator (13) having one or more segments is provided. A sensor (14) is provided that can be accessed from a side of a dispenser (10). ... | 09/11/2007 |
| 7266964 | Data center room cold aisle deflector A method and system of deflecting air circulated in a data center room are disclosed. A method for controlling air circulation within a room having an aisle between racks with computer systems mounted thereon comprises supplying cooling air to computer systems in th... | 09/11/2007 |
| 7260957 | Damper for refrigeration apparatus A damper for controlling air flow into at least one refrigeration compartment of a refrigerator is provided. The damper includes a damper, and a first damper door and a second damper door movably mounted on the frame. The damper frame defines a first gate, a second ... | 08/28/2007 |
| 7260950 | Air conditioning system and method operating suitably to user's characteristics There is provided an air conditioning system and method for operating an air conditioner according to a user's physical response to external conditions. The air conditioning system includes: an indoor environment sensing unit/a personal characteristic value receptio... | 08/28/2007 |
| 7254868 | winding and anti-drop assembly for door counterbalance system A counterbalance system (25) for a door (D) movable between a closed position and an open position having an axle (20), a cable drum (15) attached to the axle, a winding shaft (35) interconnected with the axle by a counterbalance spring (... | 08/14/2007 |
| 7251547 | Correlation of vent tile settings and rack temperatures In a method for correlating vent tiles with racks based upon vent tile settings and rack inlet temperatures, the vent tiles are set to a first setting, the first vent tile settings are recorded and the temperatures at the inlets of the racks are detected at the firs... | 07/31/2007 |
| 7232369 | System and method for providing heating, ventilation and air conditioning An under-floor, perimeter-based heating ventilation and air conditioning pressurized air delivery system for use in a space includes a ventilation module, to be located in the floor, a multi-deflection linear bar grille covering the ventilation module, for diffusing... | 06/19/2007 |
| 7228693 | Controlling airflow in an air conditioning system for control of system discharge temperature and humidity An air conditioning system may comprise an air handler, heat pump or fossil fuel furnace and may include a variable speed blower for conducting air through the system and operably connected to a controller which is also connected to a thermostat and/or humidity sens... | 06/12/2007 |
| 7225629 | Energy-efficient heat pump water heater An energy-efficient heat pump water heating system determines whether to energize a heat pump by interpreting readings from one or temperature sensors based on two thresholds. The heat pump is energized if the detected temperature falls below a first threshold and d... | 06/05/2007 |
| 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 |
| 7222821 | Method and apparatus for treating fuel to temporarily reduce its combustibility A method and apparatus are disclosed for treating fuel to temporarily reduce its combustibility, and thereafter restore its combustibility. As used in an aircraft, the method comprises the following steps: (a) treating aircraft eng... | 05/29/2007 |
