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| Number | Title | Issue Date |
| 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 |
| 6979979 | Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p... | 12/27/2005 |
| 6909263 | Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches are electrically coupled between the exciter stator winding and the p... | 06/21/2005 |
| 6907334 | Electric power steering apparatus An electric power steering apparatus for assisting the steering force of a steering member by an electric motor (18) driven by a driving circuit (13) connected to a power supply (P) by power connecting means (15a). The electric power stee... | 06/14/2005 |
| 6841967 | Coil winding number variable type motor and coil winding number varying method for varying cooling and heating capacity of reciprocating compressor A coil winding number variable type motor for varying a cooling and heating capacity of a reciprocating motor includes: a plurality of coils separately wound and connected in series to each other so as to vary turn ratio among motor coils; a plurality of relays resp... | 01/11/2005 |
| 6249104 | Cutout start switch heating A motor start switch includes a temperature responsive resistor element and a cutout switch electrically connected in series with a start winding of an electric motor. The cutout switch is in thermal contact with the temperature responsive resistor elemen... | 06/19/2001 |
| 5159255 | Energy conserving electric induction motor field control method and apparatus An alternating current induction motor having a tapped RUN winding for developing different levels of stator field excitation which induces rotational torque into a rotor having an output member that drives various levels of mechanical load. Instant motor... | 10/27/1992 |
| 4885655 | Water pump protector unit A water pump protector unit which includes electrical circuitry through which an electric motor is energized. The pump protector unit is primarily adapted for operation of a capacitor-start induction-run electric motor which operates a water pump. The ele... | 12/05/1989 |
| 4463304 | High voltage motor control circuit This disclosure relates to a circuit for controlling energization of a start winding of a single-phase motor connectable by power lines to an AC power supply. The circuit includes at least two triacs connected in back-to-back series relation and connected... | 07/31/1984 |
| 4378520 | D-C Relay relief control for A-C electric motor A D-C relay control is employed for a single phase induction motor for disconnecting the starting capacitors and/or starting windings from the main windings as the motor speed increases upon start up. D-C for the relay control is obtained from a rectifier... | 03/29/1983 |
| 4352051 | Single phase motor with reversible auxiliary windings A single phase motor is disclosed which comprises a stator assembly having a main winding, a start winding and an auxiliary winding wherein the start and auxiliary windings are connected in two alternative configurations during start and run conditions, r... | 09/28/1982 |
| 4350945 | Phase converter controlled by D-C power The control relay of a phase converter for converting a three phase motor to one phase operation is operated by D-C power in order to prevent voltage fluctuations on single phase power lines from causing the starting capacitors or the motor from being des... | 09/21/1982 |
| 4313076 | Dynamoelectric machine, method of operating such, and circuit A dynamoelectric machine having a low A ratio during its starting mode and a high A ratio during its running mode. During the starting mode of the dynamoelectric machine, an auxiliary winding serially connected in bucking relation with a phase winding is ... | 01/26/1982 |
| 3976924 | Single phase, two pole A.C. resistance split-phase unidirectional induction motor A single phase, two pole A.C. split-phase unidirectional induction motor uses a current sensing relay and connects a main winding with a single phase A.C. electrical power source while a pair of associated relay-contacts operably connect a starting windin... | 08/24/1976 |
