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| Number | Title | Issue Date |
| 7196485 | Universal low-power ceiling fan controller A universal low-power ceiling fan controller includes a brushless DC motor in a ceiling fan casing, a microprocessor connected to a power supply that operates with a remote-control device and has a transmitter and a receiver for transmitting data signals to the micr... | 03/27/2007 |
| 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 |
| 6931353 | Method of predicting motor performance based on CRML material properties A method of predicting the performance of certain electromagnetic devices is based on the integrated average core loss (IACL) and the integrated average relative permeability (IAP) of the electromagnetic core material used in the devices. The method includes the ste... | 08/16/2005 |
| 6923814 | System and methods for cervical spinal fusion A system for performing spinal fusion between adjacent cervical vertebrae, including an implant and an introducer system, and related methods. ... | 08/02/2005 |
| 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 |
| 6339310 | Motor driving control device A motor driving control device that achieves as high as possible phase coil energization level while preventing thermal destruction of the power switching element by using precise thermal detection of a portion of the power switching element inside a swit... | 01/15/2002 |
| 6066930 | Synchronous driving method for inductive load and synchronous controller for H-bridge circuit In flowing a switching current through an inductive load by way of an H-bridge circuit, a control circuit and a timing signal generating circuit are used to start a current supply operation in accordance with a driving period of a predetermined frequency,... | 05/23/2000 |
| 6060858 | C-dump switched reluctance hysteresis control A circuit and method for controlling a switched reluctance motor are provided. The circuit includes a phase coil and a switch that controls a current in the phase coil responsive to a hysteresis control signal. The circuit also includes a current sensor t... | 05/09/2000 |
| 5883483 | Inductance L load actuating apparatus In an actuation circuit for a stepping motor, one switching element and its associated coil are connected at one connecting point, while the other switching element and its associated coil are connected at another connecting point. A pair of switching cir... | 03/16/1999 |
| 5872441 | Commutation circuit for switched-reluctance motor A commutation circuit for a switched reluctance electric motor. Each phase coil in the motor discharges through a resistance. The resistance is progressively increased during discharge, to thereby decrease the overall time required for full discharge. Thi... | 02/16/1999 |
| 5770936 | Noncontacting electric power transfer apparatus, noncontacting signal transfer apparatus, split-type mechanical apparatus employing these transfer apparatus, and a control method for controlling same A noncontacting power transfer apparatus, a noncontacting signal transfer apparatus(to be referred to below as a power coupler and a signal coupler, respectively), and a separate machine apparatus that uses these couplers are disclosed. The power coupler ... | 06/23/1998 |
| 5703451 | Motor driving circuit Between one end of a motor coil and the ground, a drive transistor is connected. When the drive transistor is turned off, and in particular at the moment when a current flowing through the motor coil drops to zero, a back electromotive force is induced at... | 12/30/1997 |
| 5661390 | Inverter-fed motor drive with EMI suppression This invention provides cost-effective suppressing conducted radio-noise emissions from industrial inverter-motor drives whose EMI performance is able to meet the CISPR or FCC limits on conducted emissions. The invention includes some small size L,C filte... | 08/26/1997 |
| 5424624 | Driver circuit for electric actuator A driver circuit for an electric actuator having one or more phase windings which are selectively connected to a source of electrical energy is disclosed. Magnetic energy stored in the phase windings is transferred to a capacitor to prevent damage. The dr... | 06/13/1995 |
| 4687977 | Electronically controlled motor and methods of operating same Method of operating an electronically commutated motor, controlled by a board mounted electronic circuit, wherein current surges in such circuit are suppressed while dissipating heat associated with such suppression from motor structure as opposed to the ... | 08/18/1987 |
| 4453114 | Electromechanical actuator counter-EMF utilization system The counter-EMF generated by electromechanical actuators (14), (16), (18) and (20) during deceleration of the actuators is pooled to power various temperature control devices, such as Peltier-type thermoelectric modules (26) associated with the actuators ... | 06/05/1984 |
| 4305027 | Multiple windings electrical machines A class of electrical machines for converting between electrical energy and mechanical energy and vice versa is disclosed. Each machine has an integral number of repeatable sections and is comprised of a magnetic stator, a magnetic armature, multiple open... | 12/08/1981 |
