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| Number | Title | Issue Date |
| 8115443 | PSC motor with 4/6 pole common windings A PSC motor includes a stator core, a rotor arranged in a rotation relationship with respect to the stator core, a first to eighth winding coil sets wound around the stator core and a capacitor. The motor has two kinds of configurations for 4-pole and 6-pole operati... | 02/14/2012 |
| 7262579 | Inverted electric motor and method for using such to propel a vehicle An alternating current, multiphase, squirrel cage induction electric motor in a unique inverted design, including a method of applying the motor with controls, operator interface, batteries, and peripheral devices to propel a non-polluting electric vehicle. ... | 08/28/2007 |
| 7235906 | Magnetic bearing using displacement winding techniques The present invention provides a linear, rotary spherical motor with an integrated magnetic bearing. The motor can be a toothless permanent magnet, BLDC design composed of a permanent magnet rotor and a Zigzag stator winding containing at least two-phase windings, w... | 06/26/2007 |
| 7218075 | Electronic circuit for starting a single phase induction motor An electronic circuit for starting a single phase induction motor, of the type containing a rotor and a stator with at least one running coil (B1) and one starting coil (B2), for operating jointly with an alternating current source (F), comprising: a t... | 05/15/2007 |
| 7081733 | Speed control system of fan motor of air conditioner A speed control system of a fan motor of an air conditioner is disclosed. A speed control system of a fan motor of an air conditioner comprises: an inverter having a power output terminal connected to a single-phase power input terminal of the fan motor which has a ... | 07/25/2006 |
| 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 |
| 6965182 | Pole-change type motor Disclosed is a pole-change type motor that provides a variable-speed (two-pole or four-pole type) operation system capable of reducing the load of the motor of the normal operation system and improving the cooling efficiency. In case of a quick operation, the motor ... | 11/15/2005 |
| 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 |
| 6906479 | Gas turbine engine starter generator with multiple windings on each exciter stator pole A rotating electrical machine, such as an aircraft starter-generator, includes an exciter that has its stator windings divided into a number of sections. A plurality of switches are electrically coupled to the exciter stator winding sections and are configured and c... | 06/14/2005 |
| 6906477 | Linear control device for controlling a resistive and/or an inductive and/or a capacitive load An energy savings device for an inductive, resistive or capacitive load that fluorescent lighting fixture. A setting unit allows a user to set a desired power operating level for the load, and outputs a setting signal as a result thereof. A processor receives the se... | 06/14/2005 |
| 6707214 | PSC motor having a 4/6-pole common winding and having an additional 4-pole winding A 4/6 pole PSC motor having main and auxiliary winding configurations. Common windings are energized in both a 4-pole configuration and energized in a 6-pole configuration for both the main and the auxiliary winding configurations. An additional winding is energized... | 03/16/2004 |
| 6255755 | Single phase three speed motor with shared windings A single phase, three-speed Pole-changing electric motor has a stator and a rotor rotatably mounted within the stator. The stator includes a core having a plurality of slots, and a plurality of windings in the slots for operating at least three speeds. Th... | 07/03/2001 |
| 6175209 | 2/4-pole PSC motor with shared main winding and shared auxiliary winding A motor comprising a 2/4-pole permanent-split capacitor motor having a shared main winding and a shared auxiliary winding. The shared auxiliary winding comprises a 4-pole auxiliary winding phase shifted one slot less than a phase shift of 90 degrees with ... | 01/16/2001 |
| 6169383 | Self adapting motor controller Problems associated with maintaining a large inventory of multiple types of motor controllers designed to accommodate a single motor type are eliminated in a motor controller that automatically senses if it connected to a delta motor or a wye motor and co... | 01/02/2001 |
| 6121746 | Speed reduction switch A speed reduction switch for a multiple speed induction motor includes a speed selector switch and a delay element. As the motor is switched from a high speed to a lower speed, the delay element temporarily prevents electrical connection of a motor auxili... | 09/19/2000 |
| 5867005 | AC motor winding circuit A winding circuit for use with different input signals includes a first main winding, a second main winding, and an auxiliary branch having an auxiliary winding permanently and serially connected to a capacitor. The windings and auxiliary branch are alter... | 02/02/1999 |
| 5825111 | Single-phase induction motor 4/6 pole common winding connection with magnetic motive force symmetrically distributed A single phase alternating current four pole/six pole capacitor run induction motor is provided having a stator assembly including three coil groups, each of the coil groups having four coil sets. Each of the winding sets can change the direction of curre... | 10/20/1998 |
| 5818195 | Dual state controller for brushless electric motors A controller is provided for use with electric motors which will achieve a two mode motor operation. In this operation, a first mode is utilized having a torque configuration thus more efficiently providing high torque outputs from the motor. However, a s... | 10/06/1998 |
| 5757162 | Method and apparatus for operating an electric induction motor with a long and lossy extension cord An alternating current induction motor having a multitapped RUN winding and including a controller which automatically determines an instant tap selection in response to changes in applied a.c. electric power voltage level appearing immediately at the mot... | 05/26/1998 |
| 5614799 | Brushless direct current motor having adjustable motor characteristics A brushless direct current motor includes a permanent magnet mounted to a rotor and a set of commutated stator windings. The motor further includes a circuit for changeably connecting the set of stator windings to operate in a first electrical configurati... | 03/25/1997 |
| 5077512 | Energy conserving electric motor control method and apparatus An energy efficient electric motor is provided with a supplementary run winding arrangement which operates in conjunction with the motor's main run winding to produce a combined magnetic field with sufficient strength to operate the motor under full load.... | 12/31/1991 |
| 4906911 | Electrical machine driven by a pulse-controlled a.c. converter An electrical machine driven by a pulse-controlled a.c. converter contains multiple phases subdivided into a number of nࣙ2 equivalent phases sections that are extensively magnetically decoupled relative to each other. Each phase section is fed by a sepa... | 03/06/1990 |
| 4477760 | Continuous pole amplitude modulated electric machines A pole amplitude modulated electric machine is operated at continuously variable speeds between fixed limits by a control circuit which rapidly switches the stator winding between the upper and lower pole number configurations. The switching is controlled... | 10/16/1984 |
| 4476422 | Single phase four pole/six pole motor A single phase alternating current electric motor is provided with a main stator winding having two coil groups each including the series connection of three coils. These coil groups can be connected in series for six pole operation and in parallel for fo... | 10/09/1984 |
| 4473788 | Single phase two pole/six pole motor A single phase alternating current two pole/six pole motor is provided with a main stator winding having six coils disposed unequally around the periphery of the machine. These coils are divided into two groups. When these groups are connected such that t... | 09/25/1984 |
| 4463303 | Six pole/eight pole single-phase motor A single phase alternating current electric motor is provided with a main stator winding having two coil groups which are connected to form eight poles for eight-pole operation and to form six poles for six-pole operation. Each group contains four series ... | 07/31/1984 |
| 4322665 | Two speed single phase motor A two speed, single phase electric motor having a stator assembly including a main winding and a supplemental winding. Each of these windings includes a pair of coil sets. The main winding coil sets and the supplemental winding coil sets are so connected ... | 03/30/1982 |
| 4103212 | Two speed single phase induction motor A dynamoelectric machine in the form of an induction motor provides two speed operation with a minimum number of motor leads and a minimum number of motor windings. The motor includes a stator assembly having a core of magnetic material. The core has a pl... | 07/25/1978 |
| 4064420 | Control system for pole-changing-motor-driven compressor A control system for a compressor driven by a pole-changing motor comprises a pole changer for the motor, a contactor for stopping the motor for a predetermined time in case of the pole changing, and a switch responsive to the variation in a physical quan... | 12/20/1977 |
| 3973154 | Electric motors A two-speed, single-phase a.c., shaded-pole, induction motor with pole-changing, in ratio other than 2:1, by pole-amplitude modulation. The motor has stator and squirrel-cage rotor elements. The stator is made with an even number of salient poles, arrange... | 08/03/1976 |
