Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7735743 | Apparatus and methods for variable furnace control A furnace control system for controlling a gas-fired induced-draft furnace having a variable speed inducer blower. A control apparatus, responsive to a signal corresponding to the magnitude of a pressure difference between an inlet and outlet of the combustion chamb... | 06/15/2010 |
| 7651034 | Appliance room controller A universal controller for coordinating activity of an appliance room including a configurable air control portion, and a configurable appliance control portion. The configurable air control portion controls at least one air flow condition of the appliance room and ... | 01/26/2010 |
| 7360376 | Function transform sub-base Methods, devices and systems for coupling an HVAC controller to an HVAC system are provided. In several embodiments, a sub-base is provided allowing an HVAC controller to be coupled to a printed wire board to allow, in some cases, modification of the HVAC controller... | 04/22/2008 |
| 7322532 | Hot-water supply apparatus, anti-freezing method thereof, and anti-freezing program thereof A hot-water supply apparatus is an apparatus which has a primary heat exchanger absorbing sensible heat of combustion exhaust and a secondary heat exchanger absorbing latent heat of the combustion exhaust, and improves a freezing prevention function of the hot-water... | 01/29/2008 |
| 7296426 | Interactive control system for an HVAC system An interactive system for controlling the operation of an HVAC system is provide that comprises a thermostat for initiating the operation of the HVAC system in either a full capacity mode of operation or at least one reduced capacity mode of operation, and a control... | 11/20/2007 |
| 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 |
| 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 |
| 7270098 | Vehicle heater and controls therefor A heater for a liquid has a combustion chamber, a jacket for the liquid extending about the combustion chamber and a burner head assembly connected to the combustion chamber. The burner head assembly includes a housing having a burner mounted thereon and a hollow in... | 09/18/2007 |
| 7268505 | Electric machine and method of operating the electric machine A method of and apparatus for controlling an electric machine. The method can include using a controller to detect whether power is present at a first node of the controller, detect whether power is present at a second node of the controller, generate at least one s... | 09/11/2007 |
| 7258016 | Pressure sensor with electronic datasheet A pressure sensing system and method includes a pressure sensor configured to include a pressure sensing diaphragm and a pressure port. A memory circuit incorporated can be incorporated into the pressure port. A high order polynomial component can also be provided. ... | 08/21/2007 |
| 7256556 | Equipment and methods for emergency lighting that provides brownout detection and protection The present invention relates to systems, equipment and methods that provide emergency lighting and allow the detection of brownout conditions. One aspect of the present invention is an emergency lighting system with an input voltage interface for receiving an input... | 08/14/2007 |
| 7247994 | Methods and apparatuses for mounting a wireless network component to a fluorescent light The invention provides methods and apparatuses for mounting a wireless network component to a fluorescent light. The internal electronics of the wireless network component are contained within a housing. Attachment means are used to attach the housing to a fluoresce... | 07/24/2007 |
| 7238106 | Air delivery system The present invention relates to a system for delivering temperature and flow rate controlled warmed air to outlets for use in various apparatus. The system is typically in residential structures, such as homes, but could easily be adapted for apartment buildings as... | 07/03/2007 |
| 7229278 | Flame quality and fuel consumption monitoring methods for operating a primary burner A control system for controlling an oil or gas burner heating system comprises an ultraviolet flame sensor. Flame is detected and preanalyzed by the control for flame quality factors reflecting the degree of drift from optimal operating conditions including the aver... | 06/12/2007 |
| 7225995 | Space heating and cooling An air handler operates alternately in (a) a heating state at times when air in a space in a building is at an actual temperature that is insufficient relative to a set temperature and (b) a non-heating state at times when the air in the space is at an actual temper... | 06/05/2007 |
| 7191826 | Variable speed fan motor control for forced air heating/cooling system A fan motor speed control system for controlling the fan motor speed of an air conditioning system includes a power output circuit including a power triac which is turned on and off by an opto-isolator connected to a pulse generator circuit for varying an AC voltage... | 03/20/2007 |
| 7171821 | Temperature control unit having a vent arrangement Some constructions of the present invention provide a vent arrangement for a transport temperature control unit including a refrigeration circuit and being mountable on a transport container having a load space. The vent arrangement can include a duct communicating ... | 02/06/2007 |
| 7156317 | Recirculating fan thermostat A programmable thermostat with a heat-cool switch, a temperature value input, and a fan switch with on, auto, and recirculating positions, and a microprocessor that superimposes a fan recirculating mode or cycle on the heat-cool or off modes or cycles by determining... | 01/02/2007 |
| 7127850 | Internal building pressure apparatus and method An internal building pressure apparatus includes, in a building with walls and more than floor, at least one pressure sensor on at least more than one floor. A connection is provided for connecting pressure sensors and an analysis device is connected to the pressure... | 10/31/2006 |
| 7123020 | System and method of fault detection in a warm air furnace A fault detection system and method for a warm air furnace is provided. A sensing circuit connected to an AC power source measures a level of current consumption during several points in the warm air furnace operating sequence. The measured level of current consumpt... | 10/17/2006 |
| 7119308 | Forced-air heater control system and method The present invention relates to a forced-air electric heater control system for HVAC systems. One embodiment utilizes two heat sensors which are positioned upstream and downstream, equidistant from the heating element(s). The control system, in this embodiment, tak... | 10/10/2006 |
| 7104460 | Method and controller for determining carbon dioxide emissions from a recirculating air heater A method of determining the amount of air flowing through an outside air damper of a recirculating air heater includes the steps of sensing an amount of airflow flowing through the damper, recording the amount of airflow and a damper position value at a plurality of... | 09/12/2006 |
| 7100597 | Modular burner/blower system and method A modular burner/blower system and method directed to an independently operable direct fired burner unit and an independently operable blower unit that are also configured to be interconnected to one another and to operate together. The direct fired burner unit incl... | 09/05/2006 |
| 7101172 | Apparatus and methods for variable furnace control A furnace control system for controlling a gas-fired induced-draft furnace having a variable speed inducer blower. A control apparatus, responsive to a signal corresponding to the magnitude of a pressure difference between an inlet and outlet of the combustion chamb... | 09/05/2006 |
| 7090140 | Method and device for monitoring burners The invention relates to a device and a method for monitoring burners using an automatic heating machine (1) for controlling or regulating the burner (15), and a temperature controller (5). At least the flow/boiler temperature (T?VL?) is detecte... | 08/15/2006 |
| 7075255 | Variable speed controller for a family of multi-tap motors A system for variable speed motor control provides continuous variable speed motor controller for each motor or motor application within a family of multi-tap motors while using a single controller. The single controller utilizes a wave chop technique providing vari... | 07/11/2006 |
| 7072727 | Method and system for determining heat loss of a building and sizing HVAC equipment A method for determining proper size of HVAC equipment, recording on and off cycling data associated with equipment within a structure for a period of time, recording inside temperature data of the structure for the period of time, recording outside temperature data... | 07/04/2006 |
| 7066452 | Humidifier with reverse osmosis filter A filtering system for use with a reservoir. The filter system includes a filter assembly capable of filtering particles sized 1.0 micrometers and larger and may, include a flow control device positioned to selectively provide fluid flow to the filter assembly. The ... | 06/27/2006 |
| 7059536 | Air circulation system An air circulation system for use with or without ductwork having an outside air stream and a return air stream includes a controller and a return damper apparatus operatively connecting the return air stream to the controlled environment. The air circulation system... | 06/13/2006 |
| 7048537 | Apparatus and method for controlling a variable fuel fired appliance An apparatus is provided for controlling a fuel fired heating appliance, the apparatus comprising a first processor for controlling the ignition operation of the furnace and a second processor for controlling the operation of a variable speed blower motor, wherein t... | 05/23/2006 |
| 7012223 | Forced-air heater control system and method The present invention relates to a forced-air electric heater control system for HVAC systems. One embodiment utilizes two heat sensors which are positioned upstream and downstream, equidistant from the heating element(s). The control system, in this embodiment, tak... | 03/14/2006 |
| 7004084 | Corn burner A corn-burning stove provides cooling for the corn in-feed auger and other adjacent components by combustion inlet air flow patterns. The inlet air flow transports pellet fuel through a distance within the fire pot which varies responsive to the flow rate of the inl... | 02/28/2006 |
| 6996944 | Fire barriers for multi-dimensional architectural expansion joints Multi-dimensional, multi-layered, fire barriers for use in multi-dimensional architectural expansion joints may comprise a plurality of fire resistant material layers and the method for making such barriers is taught. The layers comprising the fire barriers may be c... | 02/14/2006 |
| 6994890 | Cleaning and multifunctional coating composition containing an organosilane quaternary compound and hydrogen peroxide Cleaning and multifunctional coating compositions containing hydrogen peroxide and an organosilane quaternary compound in aqueous formulations are used to improve water and soil repellency and residual antimicrobial activity. Various surfaces may be treated includin... | 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 |
| 6979955 | Deriving power for a wireless network component from the power source of a fluorescent light Systems and methods are provided for deriving power for a wireless network component from the power source of a fluorescent light. Power couplings are electrically connected to the pins of a fluorescent lamp and to a power converter of the wireless network component... | 12/27/2005 |
| 6976052 | Spa control system An improved spa control system is disclosed. The invention describes a spa control system which calculates the time required to heat the water in the spa system to a desired temperature. From that information, the heating rate of the spa system can be determined, an... | 12/13/2005 |
| 6965815 | Spa control system An improved spa control system is disclosed. The invention describes a spa control system which calculates the time required to heat the water in the spa system to a desired temperature. From that information, the heating rate of the spa system can be determined, an... | 11/15/2005 |
| 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 |
| 6931869 | Refrigerated vending machine exploiting expanded temperature variance during power-conservation mode A refrigerated vending machine for dispensing items (such as soda cans or other beverage containers) includes a power source and a cooling system (e.g., evaporator, condenser, compressor, circulating fan). Power control circuitry selectively provides electrically co... | 08/23/2005 |
