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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7828224 | Air conditioning diffuser having function of automatically changing air supply direction Disclosed herein is an air conditioning diffuser having a function of changing an air supply direction. The diffuser of the present invention includes a frame (10) and a temperature sensing cylinder (20), which is coupled to the frame (10). A wa... | 11/09/2010 |
| 7644869 | Auxiliary stage control of multistage thermostats Systems and methods for the auxiliary stage control of multistage thermostats are disclosed. An illustrative multistage thermostat for a multistaged HVAC system installed within a building or structure can include a processor having a control algorithm adapted to op... | 01/12/2010 |
| 7341201 | Fully articulated and comprehensive air and fluid distribution, metering, and control method and apparatus for primary movers, heat exchangers, and terminal flow devices The described method and apparatus pertains namely to the HVAC (Heating, Ventilating, and Air Conditioning) industry, though its many functions extend into any and all forms of air-fluid movement, metering, distribution, and containment. Essentially, the scope of op... | 03/11/2008 |
| 7323837 | Fan speed controlling system A fan speed controlling system for a power supply comprises a fan having two pins and a voltage comparator connected to the fan. The voltage comparator comprises a first input terminal for receiving a first reference voltage controlled by an external temperature of ... | 01/29/2008 |
| 7287395 | Distributed cooling system A system includes a plurality of distributed refrigeration units respectively coupled to discrete refrigeration circuits. Each refrigeration unit may include a variable compressor, a fixed compressor, a condensing unit, and a controller. The controller compares an o... | 10/30/2007 |
| 7262964 | Airflow control baffle An apparatus includes a printed circuit board having a first space, a member movably coupled to the printed circuit board and a baffle carried by the member. The baffle is configured to move to an extended position, which is maintained in the absence of a component ... | 08/28/2007 |
| 7247276 | Micro-reactor for reactions between gases and liquids Described herein is a microreactor for carrying out chemical reactions between a reaction partner in liquid form and a reaction partner in gaseous form, if necessary in the presence of a solid catalyst, whereby the chemical process guidance takes place in spaces tha... | 07/24/2007 |
| 7241423 | Enhancing fluid flow in a stacked plate microreactor A stacked plate chemical reactor in which simple plates are stacked together to form the reactor. When openings in adjacent plates are properly aligned, fluid pathways and processing volumes are defined for chemical reactants, heat transfer medium, and a product. In... | 07/10/2007 |
| 7188002 | Appliance diagnostic display apparatus and network incorporating same An appliance diagnostic display and interface system providing a centralized user interface for appliance diagnostic information and control of system self-tests is provided. This centralized user interface is provided via an intelligent thermostat that includes an ... | 03/06/2007 |
| 7177776 | System and method for developing and processing building system control solutions A test tool enables the testing of multiple variable air volume (VAV) boxes from a single location in a building environmental system. The test tool includes a building level network interface and a test program for sending a test parameter to a plurality of VAV box... | 02/13/2007 |
| 7114554 | Controller interface with multiple day programming A controller equipped with a user interface having multiple-day programming capabilities, including methods of programming such devices, are disclosed. The user interface may include one or more menus or screens that can be used to program a schedule for one or more... | 10/03/2006 |
| 7101515 | System and method for determining optimal reaction parameters using continuously running process A reaction system enables a plurality of optimization experiments for a reaction to be performed continuously, to enable optimal reaction parameters to be determined. Dilution pumps are included to automatically vary the solvent mixed with reactants so a concentrati... | 09/05/2006 |
| 7056477 | Modular chemical production system incorporating a microreactor A modular chemical production system that preferably includes a microreactor for producing a product by reacting two or more reactants. Modularization enables components such as controllers, pumps, valves, microreactors, and processing modules to be added or removed... | 06/06/2006 |
| 6983889 | Forced-air zone climate control system for existing residential houses A low cost and easy to install zone climate control system for retrofit to an existing forced air HVAC system, that provides independent minute-by-minute, day-by-day, and room-by-room climate control, including easy to use methods for specify temperature schedules a... | 01/10/2006 |
| 6976911 | Method and apparatus for filtering airborne contaminants A method and apparatus for removing airborne contaminants in residential or commercial buildings injects filtered air into these enclosures. Prior to be injected in these enclosures, the air is filtered for chemical, biological or radioactive hazards. The filtering ... | 12/20/2005 |
| 6938626 | Method and apparatus for wet-cleaning substrate An apparatus for wet cleaning a substrate includes a clean air supplier for supplying the clean air into a cleaning draft, a humidifier for supplying steam or mist like water drops into the cleaning draft, a hygrometer, connected to the humidifier and positioned at ... | 09/06/2005 |
| 6916239 | Air quality control system based on occupancy Air quality within a building is controlled by maintaining a count of people in the building and by ventilating the building with an amount of air dependent on the count. The count may be determined in accordance with an access control system and/or entry and exit s... | 07/12/2005 |
| 6844691 | Ventilator having an abnormal operation indication device A ventilator having an abnormal operation indication device includes a power supply circuit, a central processing unit, a fan motor, and a load sensing circuit. Thus, the load sensing circuit detects the abnormal operation signals through the sensor, so that the abn... | 01/18/2005 |
| 6592449 | Smart fan modules and system A fan module including: two or more individual fans, each fan having an air movement means and a motor engaged with the air movement means for accelerating air entering each of the two or more individual fans; a temperature sensor for sensing a temperatur... | 07/15/2003 |
| 6496110 | Rapid fire emergency response for minimizing human casualties within a facility A method and apparatus are described for responding to a fire emergency at a facility by analyzing a plurality of fire threat conditions to determine possible responses to a fire emergency and selecting a response to the fire emergency for minimizing huma... | 12/17/2002 |
| 6456023 | Method and apparatus to control a variable speed motor A method for controlling an electronically commutated motor (ECM) using an air moving system including a controller and an interface board, the interface board electrically coupled to the controller. The ECM electrically coupled to the interface board. Th... | 09/24/2002 |
| 5771879 | Heated makeup air system for a commercial kitchen A heated air makeup unit comprises a duct structure having a surrounding wall, a fan for moving air through the duct structure, and a gas burner mounted in the duct structure for heating air being moved past the burner. A pair of laterally spaced convergi... | 06/30/1998 |
| 5524556 | Induced draft fan control for use with gas furnaces A gas fired furnace system (10) has a controller (14) controlling the supply of gas through a gas valve (12) and air for combustion by means of an induced air draft fan (28), ignition of the gas by means of ignitor (22), the delivery of heated air from a ... | 06/11/1996 |
| 5417275 | Air circulator control apparatus and method An air circulator control apparatus and method of use for at least one air circulator and a climate control system having a heater and a cooler to regulate the air temperature of a vertical column of air in a structure. The present invention seeks to over... | 05/23/1995 |
| 5364025 | Combination motor cooler and air aspirator for climate control system A combined motor cooler and air aspirator for use in a motor vehicle climate control system comprises a forced air ventilation blower motor having an inlet port for admitting a flow of cooling air and a plurality of housing apertures for allowing the cool... | 11/15/1994 |
| 5304094 | Method of mixing cold introduced air with warmer room air A method of mixing introduced relatively cold air with warmer air in a room which comprises directing a stream of high-velocity very cool air from jet orifices in the room wall at adult eye level upwardly along the wall to the ceiling, thus thoroughly mix... | 04/19/1994 |
| 5236124 | Apparatus for automatically ventilating buildings such as winter gardens, sun lounges, and greenhouses The invention relates to an apparatus for venting a building such as a greenhouse, by means of a sheet member which can be mounted in one or several openings of the building. The sheet member comprises a frame with four sides wherein are provided on at le... | 08/17/1993 |
| 5084659 | Method of operation of air cleaner A concentration of a given gas is detected by a gas sensor when a command signal for turning off the gas sensor is present, the concentration is stored and the gas sensor is turned off. The invention detects the concentration of the given gas by the gas s... | 01/28/1992 |
| 4931948 | Method and system for controlling a single zone HVAC supplying multiple zones An improved monitoring and control system for a heating, ventilating and air conditioning (HVAC) unit which provides zone control in plural zones in which each zone includes a thermostat which controls a damper for its zone. One thermostat is selected and... | 06/05/1990 |
| 4919327 | Air-processing installation designed for the ventilation and air-conditioning of several rooms and air-processing module designed for an installation of this type An air-processing installation designed to ventilate and air-condition seal rooms, as well as an air-processing module designed for the making of an installation of this type are disclosed. With each room to be air-conditioned, there is associated a stru... | 04/24/1990 |
| 4886110 | HVAC zone control system An HVAC system for a plurality of zones comprising an air handling unit including a blower, a plurality of heating stages and a plurality of cooling stages. The air handling unit is connected via ducts to each of the zones, each zone having an air outlet ... | 12/12/1989 |
| 4860231 | Calibration technique for variable speed motors A variable speed motor is regulated responsive to the load torque acting on the blower wheel. The load torque acting on the blower wheel is determined by means of a coast down procedure in which the motor is briefly de-energized and the rate of angular ch... | 08/22/1989 |
| 4858677 | Automobile air-conditioning apparatus with air blower control An automobile air-conditioning apparatus with air blower control air-conditions the passenger compartment of an automobile by cooling and/or heating air delivered from an air blower into the compartment. During a period in which the compartment starts bei... | 08/22/1989 |
| 4856710 | Dual air conditioner for a vehicle A dual air conditioner having a pair of air conditioning units for front and rear seats within the compartment of a vehicle adjusts the temperatures of air output to the front and rear seats in accordance with the difference between the temperature desire... | 08/15/1989 |
| 4841733 | Dri-Pc humidity and temperature controller A temperature and humidity control system for natatoriums. The system provides a constant volume of air circulation which is used to control temperature and humidity in the natatorium while inhibiting the accumulation of moisture on the surfaces defining ... | 06/27/1989 |
| 4829882 | Crawl space ventilation system A crawl space ventilation system includes an intake fan assemby (10) having a housing with an 8×15 inch tubular mounting portion (b 16), a jet-stream directing portion (30) which is substantially smaller than the mounting portion, and an electric fan mou... | 05/16/1989 |
| 4830275 | Temperature control of buildings This is a system for the air conditioning of rooms in building, which rooms are defined by concrete floor structures with hollow ducts connected in series in parallel with each other and in groups, in order to bring about effective heat exchange between c... | 05/16/1989 |
| 4830276 | Heater system for greenhouses A heating system for warming the space within a greenhouse or similar structure. The heating system comprises a heater means having a heating chamber for air, mounted in a plenum chamber. The plenum chamber is located below the base of the structure and i... | 05/16/1989 |
| 4819716 | Advanced zone damper system The advanced zone damper incorporates an adjustable, spring loaded damper door control which allows any percentage up to 50% of the total air flow to pass through a locked damper door when only two dampers are used in a multizone heating and cooling syste... | 04/11/1989 |
| 4805835 | Methods and apparatus for the control of smoke and fire in buildings Smoke and fire control devices and systems are disclosed, including smoke control devices which are responsive to smoke to evacuate smoke and also responsive to elevated temperatures to terminate the evacuation of smoke. Other disclosed smoke control devi... | 02/21/1989 |
