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| Number | Title | Issue Date |
| 7956565 | Variable field permanent magnet dynamoelectric machine A dynamoelectric machine which operates in a constant power mode. ... | 06/07/2011 |
| 7868573 | Drive circuits A drive circuit includes an ac network and first and second network rectifier/inverters (which can be active or passive) that are connected to the ac network in parallel. A first PWM rectifier/inverter is connected to the first network rectifier/inverter through a f... | 01/11/2011 |
| 7755315 | Rotary linear drive having a transmitter device The aim of the invention is to provide a linear/rotation drive with an improved transmitter device for detecting the linear and rotational movements. For this purpose, the transmitter device (12, 14, 16, 17) for detecting the linear movement and/or rotational... | 07/13/2010 |
| 7659680 | Motor battery systems A combined motor-battery system comprising an electric power source adapted to convert self-originating electrical current to mechanical power utilizing a set of common functional structures. Preferred embodiments include an electrochemical cell comprising field rea... | 02/09/2010 |
| 7576507 | Motor battery systems A combined motor-battery system comprising an electric power source adapted to convert self-originating electrical current to mechanical power utilizing a set of common functional structures. Preferred embodiments include an electrochemical cell comprising field rea... | 08/18/2009 |
| 7508151 | Stator position adjustment method and device A stator position adjustment method and device relating to a motor driving device including a motor case, a rotor and a stator disposed on an outer periphery of the rotor concentrically with the rotor, includes adjusting a position of the stator relative to an axial... | 03/24/2009 |
| 7427845 | Segmented switched reluctance electric machine with interdigitated disk-type rotor and stator construction The present invention relates to a unipolar current electrical machine operable as a switched reluctance motor, comprising a motor structure and a control unit. The motor structure comprises a plurality of disk-shaped annular stator elements stacked and spaced equid... | 09/23/2008 |
| 7382106 | Method to operate a motor having reciprocating and rotating permanent magnets A method to operate a motor having a rotor supported for rotation about an axis, at least one pair of rotor magnets spaced angularly about the axis and supported on the rotor, at least one reciprocating magnet. The method includes the steps of moving the reciprocati... | 06/03/2008 |
| 7358691 | Vibration device A vibration device comprises a motor having a stator and a rotor each having one or more magnetic elements. A magnetic element on at least one of the rotor and the stator comprises an electromagnet which can be supplied with an electric current so as to interact wit... | 04/15/2008 |
| 7339295 | Electric machine with improved temperature monitoring system An electric machine includes a heat-generating machine component, and a temperature radiation detector for contactless determination and/or measurement of heat radiating from the machine component for ascertaining an absolute and current temperature of the machine c... | 03/04/2008 |
| 7322799 | Scalable, modular, high availability fan system In one embodiment, the invention recites a fan motor assembly with integrated redundant availability. The fan motor assembly comprises a fan motor subassembly with a plurality of replaceable fan motors, and a fan motor selector mechanism coupled to the fan motor sub... | 01/29/2008 |
| 7288906 | Manually operated brushless direct current motor A manually operated brushless DC motor is disclosed herein, which is an educational electric motor and can overcome the shortcoming hard to visualize the movement of a motor due to the high-speed rotation of the motor. The manually operated brushless DC motor accord... | 10/30/2007 |
| 7271565 | Apparatus for controlling speed of fan motor of air-conditioner An apparatus for controlling a speed of a fan motor (HIM (Hybrid Induction Motor)) of an air-conditioner extends a speed control range of a fan motor of an air-conditioner by controlling revolutions per minute (RPM) of the fan motor. In order to extend the speed con... | 09/18/2007 |
| 7270203 | Electric machine for hybrid motor vehicle A power system for a motor vehicle having an internal combustion engine and an electric machine is disclosed. The electric machine has a stator, a permanent magnet rotor, an uncluttered rotor spaced from the permanent magnet rotor, and at least one secondary core as... | 09/18/2007 |
| 7265538 | Method and device for measuring the rotational speed of a pulse-activated electric motor based on a frequency of current ripples A method and a device for measuring the speed of a pulse-activated electric motor are described. According to this method, the motor is fully activated at time intervals to be determined for a defined measuring time by the circuit element provided for timing and, in... | 09/04/2007 |
| 7244106 | Process and device for flow control of an electrical motor fan A method and configuration from maintaining a constant of air to a protective helmet (4) from a fan (3) in a battery powered fresh air unit. The fan (3) is a radial fan with a filter (5) positioned on the suction side of the fan and is op... | 07/17/2007 |
| 7211977 | Pulse width modulation fan control In one embodiment, a fan control system includes a temperature-sensing device that is adapted to sense a temperature of a component and output a temperature feedback signal, and a pulse width modulation control circuit that is configured to receive the temperature f... | 05/01/2007 |
| 7211974 | Motor and drive control system thereof Provided is a motor having a magnetic polar unit in which a permanent magnetic polar array having arranged therein alternately a plurality of permanent magnetic polar elements in alternate opposite poles is made to face a plurality of electromagnetic coil arrays alt... | 05/01/2007 |
| 7166981 | Actuator, motor unit and controller unit An actuator, which allows a controller to be commonly applied to a plurality of models without requiring complicated setting operation of control parameters, and is superior in cost effectiveness, reusability and expandability, is provided. And further, a motor unit... | 01/23/2007 |
| 7166978 | Motor temperature sensor system and method to determine motor performance An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the t... | 01/23/2007 |
| 7142125 | Fan monitoring for failure prediction A method for monitoring a fan comprises measuring power usage of the fan, determining a derivative of the measured fan power usage, tracking the derivative over time, and predicting impending fan failure based on the tracked fan power usage derivative. ... | 11/28/2006 |
| 7135830 | System and method for identifying operational parameters of a motor A system and method for establishing estimated values of electrical parameters of a motor. The electrical parameters may be established from stator resistance data and motor data obtained at a single load on the motor. The electrical parameters also may be establish... | 11/14/2006 |
| 7109671 | Device and method of a back EMF permanent electromagnetic motor generator This invention is a back EMF permanent electromagnetic motor generator and method using a regauging process for capturing available electromagnetic energy in the system. The device is comprised of a rotor with magnets of the same polarity; a timing wheel in appositi... | 09/19/2006 |
| 7106011 | Web roller assist drive An assist drive assembly for adjusting tension in a web generated when the web is moved over a roller in a contacting relationship therewith. A plurality of north and south pole elements are disposed about the roller. A controller is coupled to a magnetic pole senso... | 09/12/2006 |
| 7098552 | Wind energy conversion system A wind energy conversion system includes upper and lower wind turbines having counter-rotating blade assemblies supported for rotation about a vertical rotation axis, with each blade assembly carrying a rotor for rotation past a stator to produce an electrical outpu... | 08/29/2006 |
| 7092791 | Robot system and machining method with robot system A robot system and a machining method capable of accurately and simply cutting an end of a pipe into a saddle shape and forming a hole on an outer surface thereof, and further machining a workpiece of a three-dimensional shape which does not have platelike shape. A ... | 08/15/2006 |
| 7053575 | Method for controlling operation of power seat for vehicle A method for controlling operations of power seats for a vehicle, comprises the steps of moving a first seat toward a second seat by a first reversible motor, causing a seat cushion of the first seat to be tipped up, by a second reversible motor, relative to a seat ... | 05/30/2006 |
| 6975045 | Wind power generating system In a wind power generating system, a pair of axially spaced turbines are connected to an outer rotor and an inner rotor of a generator, respectively, and are provided with blades having equal but opposite pitch angles so that the inner and outer rotor rotate at a sa... | 12/13/2005 |
| 6956344 | High availability fan system A fan motor assembly with integrated redundant availability is recited. The fan motor assembly can include a fan motor subassembly with a first fan motor and a second fan motor, and a fan motor selector mechanism coupled to the fan motor subassembly, so that the fan... | 10/18/2005 |
| 6946815 | Switch for a variable-speed induction motor A switch for a variable-speed induction motor includes conductive connecting pieces, a rotary member, and a driving unit. The connecting pieces are mounted in a housing, are adapted to be connected to the induction motor, and have distal contact parts that surround ... | 09/20/2005 |
| 6903525 | Motor temperature sensor system and method to determine motor performance A method and apparatus is herein disclosed for determining the motor performance of an electric motor through monitoring the temperature of rotor magnets. The temperature is determined by initially heating the rotor magnets to two known temperatures and subsequently... | 06/07/2005 |
| 6856113 | Central vacuum cleaning system motor control circuit mounting post, mounting configuration, and mounting methods A central vacuum cleaning system has a motor in a motor housing in a canister with a receptacle. In the motor housing is a motor control circuit with a printed circuit board. The motor control circuit is mounted to the motor housing using a mounting post having a li... | 02/15/2005 |
| 6831435 | Vehicle blower motor device and holder for blower motor device A holder of a vehicle blower motor device includes a holder body for holding a motor, a disk-shaped coupling member, and a cover plate. The holder body, the coupling member, and the cover plate define an air duct. Air is introduced to the interior of the holder body... | 12/14/2004 |
| 6753632 | Controlling electric motor cogging A method of determining magnet pole geometry for controlling cogging in an electric motor includes defining the magnet pole geometry in terms of at least one design parameter, predicting cogging as a function of the design parameter, and from the predicted cogging, ... | 06/22/2004 |
| 6713982 | Segmented induction electric machine with interdigiated disk-type rotor and stator construction The present invention relates to an A. C. electrical machine comprising: a plurality of disk-shaped annular stator elements stacked and spaced equidistantly from each other and mounted on a frame; a plurality of disk-shaped rotor elements mounted on a rotational axi... | 03/30/2004 |
| 6548981 | Actuator In the actuator device, there are provided the control means to control the rotation of the rotor axis via the driving means in the housing, the rotor axis rotation displacement detection means for detecting the rotation displacement of the rotor axis in ... | 04/15/2003 |
| 6504337 | Motor modeling using harmonic ampere-turn saturation method A method and apparatus are provided for modeling an electric motor. The method includes the steps of interpolating a flux density for each angular position within an air gap of the electric motor from a predetermined air gap and tooth magnetization magnet... | 01/07/2003 |
| 6456029 | Controller for vehicle motor A controller for a vehicle motor includes a switching unit, a capacitor unit, output terminals and wiring lines. The switching unit is provided on a substrate to control power supply to a motor. The capacitor unit is arranged in neighborhood of the switch... | 09/24/2002 |
| 6392370 | Device and method of a back EMF permanent electromagnetic motor generator This invention is a back EMF permanent electromagnetic motor generator and method using a regauging process for capturing available electromagnetic energy in the system. The device is comprised of a rotor with magnets of the same polarity; a timing wheel ... | 05/21/2002 |
| 6356044 | Motor with programming module A motor having a rotor and stator for use with a power supply. A power switching circuit connected between the windings and the power supply selectively energizes windings of the stator to generate the magnetic field applied to the rotor to cause the roto... | 03/12/2002 |
