Abstract: A control system for a cooling system configured to selectively operate one or both of a condenser fan an evaporator fan in a reverse direction RD, measure power draw at the motor against configuration data and fan motor profiles, and determine if a blockage has occurred before the static pressure has reached a critical point static pressure where the efficiency, performance, and cooling capability of the cooling system is hindered and maintenance is required to clear the blockage. By determining if blockage has occurred before the static pressure has reached the critical point static pressure, an alert or corrective action can be taken.

Abstract: A control system for a cooling system configured to selectively operate one or both of a condenser fan an evaporator fan in a reverse direction RD, measure power draw at the motor against configuration data and fan motor profiles, and determine if a blockage has occurred before the static pressure has reached a critical point static pressure where the efficiency, performance, and cooling capability of the cooling system is hindered and maintenance is required to clear the blockage. By determining if blockage has occurred before the static pressure has reached the critical point static pressure, an alert or corrective action can be taken.

Abstract: A landfill 10 is lined with an impermeable liner material at 12 and filled with waste, such as household waste. When the landfill is full, it is capped by a cap 14. Degradation of the body of waste material within the landfill creates leachate liquid as a byproduct. Without intervention, the leachate will form a layer 16 of saturated waste material at the bottom of the landfill 10. An extraction well 22 allows leachate to be drawn from the landfill 10 by a pump 26. Injection wells 24 allow leachate to be reintroduced into the landfill 10. Various sensors 36, 38, 40 take measurements associated with the wells 24. Leachate delivery is controlled in accordance with the values obtained. The obtained values may include the leachate head in the well and/or the volume or rate of leachate delivery to the well and/or the elapsed time since commencement of leachate delivery to the well and/or the rate of dispersion of the leachate into the landfill from the well.

Abstract: A landfill 24 has an impermeable liner 26 at its base and sides, and is capped at 28 by a multi-layer cap. The body of waste material 46 within the landfill 24 will undergo degradation. One byproduct will be leachate. Sediment 37 will develop at the bottom of the landfill 24 in the absence of any intervention. Extraction wells 38 extend from the surface (above the cap 28) down to the bottom of the landfill 24. A pump 54 allows leachate to be drawn from the waste material 46, through the extraction well 38. Leachate is extracted at a rate sufficient to create turbulence within the body of waste material 46. The turbulence serves to entrain sediment in the leachate for extraction of the entrained sediment with the leachate.

Abstract: A method of controlling an electrical machine. The electrical machine includes a stator having a core and a plurality of windings, and a rotor disposed adjacent to the stator to interact with the stator. The method includes detecting a movement of the rotor, generating a three phase alternating current (AC) voltage signal by all phases of the electrical machine, monitoring for a transfer speed of the electrical machine, discontinuing the three phase AC voltage signal when the transfer speed is traversed, and switching to a back electromotive force (BEMF) control mode after discontinuing the three phase AC voltage signal.

Abstract: A sensorless permanent magnet motor system that prevents negative torque caused by back EMF. The system determines the position of the rotating permanent magnet by monitoring back EMF generated on an inactive coil of the motor system. A snubber circuit is used to prevent the back EMF from causing negative torque on the motor. The voltage of back EMF used to power a logic circuit, such as a microcontroller, that controls the operation of the motor. The microcontroller controls the operation of the motor by detecting back EMF and is also partially powered by the back EMF.

Abstract: The present invention is a man-made beehive that allows a plurality of bees to store more of a plurality of honey than a traditional beehive that includes a natural cedar wood general rectangular shape two queen hive, a plurality of brood boxes removably held within the two queen hive, the broad boxes house a plurality of eggs, larvae and pupae from the bees utilized by the man-made beehive and a plurality of screened bottom boards positioned in the bottom portion of the two queen hive. The man-made beehive also includes a telescoping cover positioned on the top portion of the two queen hive to protect the man-made beehive and a queen excluder that is positioned between a pair of the broad boxes.

Abstract: A sensorless permanent magnet motor system that prevents negative torque caused by back EMF. The system determines the position of the rotating permanent magnet by monitoring back EMF generated on an inactive coil of the motor system. A snubber circuit is used to prevent the back EMF from causing negative torque on the motor. The voltage of back EMF used to power a logic circuit, such as a microcontroller, that controls the operation of the motor. The microcontroller controls the operation of the motor by detecting back EMF and is also partially powered by the back EMF.

Abstract: A method of controlling an electrical machine. The electrical machine includes a stator having a core and a plurality of windings, and a rotor disposed adjacent to the stator to interact with the stator. The method includes detecting a movement of the rotor, generating a three phase alternating current (AC) voltage signal by all phases of the electrical machine, monitoring for a transfer speed of the electrical machine, discontinuing the three phase AC voltage signal when the transfer speed is traversed, and switching to a back electromotive force (BEMF) control mode after discontinuing the three phase AC voltage signal.

Abstract: An air movement system including a blower and an external controller operable to receive signals from a sensing device and generate a command based on the received signals. The command includes an address. The system also includes a communication channel coupled to the external controller and configured to communicate the command, and a motor assembly operable to drive the blower. The motor assembly includes a stator and rotor assembly coupled to the blower, and a drive circuit coupled to the stator and rotor assembly. The motor assembly includes a second controller and a memory. The memory includes a set of data having a plurality of addresses and an instruction associated with each address, respectively.

Abstract: An electrical machine having a stator and a rotor. The stator includes a core and a plurality of windings disposed on the core in a multiple-phase arrangement. The rotor is disposed adjacent to the stator to interact with the stator. A method of operating the motor includes applying a pulsed voltage differential to first and second terminals of the windings resulting in movement of the rotor; monitoring the back electromotive force (BEMF) of the windings to sense rotor movement; after the applying and monitoring steps, monitoring the BEMF of the windings to determine whether the rotor is rotating in a desired direction, and electrically commutating the motor when the rotor is rotating in the desired direction and zero or more other conditions exist.

Abstract: There is described a programmable electronic timer for control of household or industrial appliances, machines or lighting. The user of said device operates only a single momentary push button to perform all operation and programming steps. Optionally the device includes an indicator light for status feedback to the user. The single button serves as an on/off switch and programming input. When pressed the button turns the connected device off if it was previously on or alternately turns the connected device on if it was previously off. On and off button actions and the time during a 24 hour day that each occurred are recorded by the device. This record becomes the programmed sequence in the timer. On subsequent days the device repeats all on and off recorded events without user action.

Abstract: An assembly for moving a barrier from one of a closed position and an opened position to the other of the closed position and the opened position. The assembly includes a motor to supply one of a first power and a second power to the barrier. The assembly also includes a controller to control the motor to supply the first power to move the barrier towards the closed position from the opened position. The controller also controls the motor to supply the first power to the barrier to move towards the opened position from the closed position, and to supply the second power intermittently after the barrier has started moving towards the opened position and before arriving at the opened position.

Abstract: An electric machine having a stator assembly that includes a stator core and a coil supported by the stator core and a rotor assembly that includes a shaft and a rotor supported by the shaft that is in magnetic interaction with the stator core. The electric machine may include a single sensor configured to detect magnetic polarities of the rotor as the rotor rotates relative to the sensor and to generate a signal representing the detected magnetic polarities of the rotor. The signal and an inverted version of the signal are utilized to control current through the coil. The current may be controlled indirectly by controlling the application of voltage to the coil. The sensor may be encapsulated on a circuit board to positively position the sensor relative to the circuit board. The circuit board may be mounted to a bearing housing of the electric machine. The sensor may be received in a pocket of a bearing housing of the electric machine so the sensor is positively positioned relative to the rotor.

Abstract: An electric machine having a stator assembly that includes a stator core and a coil supported by the stator core and a rotor assembly that includes a shaft and a rotor supported by the shaft that is in magnetic interaction with the stator core. The electric machine may include a single sensor configured to detect magnetic polarities of the rotor as the rotor rotates relative to the sensor and to generate a signal representing the detected magnetic polarities of the rotor. The signal and an inverted version of the signal are utilized to control current through the coil. The current may be controlled indirectly by controlling the application of voltage to the coil. The sensor may be encapsulated on a circuit board to positively position the sensor relative to the circuit board. The circuit board may be mounted to a bearing housing of the electric machine. The sensor may be received in a pocket of a bearing housing of the electric machine so the sensor is positively positioned relative to the rotor.

Abstract: A novelty shipping container hollow inside to hold consumer contents. The container snaps apart to allow filling of the inside with gifts, candy, letters or other items. The container then snaps together securing the contents for shipment. A mailing label is attached to a designated area on the container. The container may then be shipped via regular U.S. postal carriers without a box or further packaging. The container may be shaped as an animal such as an owl or other objects such as a vase with flowers.

Abstract: The present invention teaches an improved ear cleaner consisting of one piece of solid flat plastic, inexpensively molded or stamped to an elongate oval shape with one aperture at each end to form a loop. The present invention teaches that an improved ear cleaner may be made of a length such that it becomes difficult for the user to damage their ear drum. The invention further teaches that an improved ear cleaner may be made having a rounded shape and a soft consistency such that should the ear cleaning head (a thin and soft loop) impact the ear drum, it will bend rather than injure the ear drum. The present invention further teaches a method of manufacturing the ear cleaner which provides a very inexpensive method of making a one piece ear cleaner requiring no further assembly after manufacture. The present invention further teaches that the ear cleaner may advantageously be stamped rather than molded for further decrease in cost of manufacture.