Class / Patent application number | Description | Number of patent applications / Date published |
310048000 | With other elements | 24 |
20080238220 | Fault-tolerant permanent magnet machine with reconfigurable stator core slot flux paths - A permanent magnet (PM) machine has a reconfigurable fault condition mechanism disposed solely within a stator core portion, wherein the mechanism is automatically reconfigurable to reduce fault currents associated with the PM machine during a fault condition. The reconfigurable fault condition mechanism is automatically reconfigurable to also reduce internal heat associated with the PM machine during a fault condition. A method of reconfiguring the fault condition mechanism upon detection of a fault condition includes the steps of 1) selecting the reconfigurable fault condition mechanism from a) a plurality of rotatable magnetically anisotropic cylinders disposed within stator core slots, b) a plurality of ferrofluid-fillable cavities associated with stator core slots, and c) a sliding shield within the stator core; and 2) reconfiguring the fault condition mechanism to automatically reduce fault currents associated with the PM machine upon detection of a fault condition. | 10-02-2008 |
20090009011 | Motor using magnetic normal force - A motor is disclosed comprising: at least one stator comprising a magnetic core and at least one magnetic winding, having a cylindrical internal cavity; at least one cylindrical rotor inside said stator, comprising magnetically conductive materials; said rotor having an outer diameter significantly smaller than the inner diameter of said stator, being eccentrically mounted with respect to said stator and able to move within, said fixed member; wherein magnetic normal force is induced in said stator periodically, whereby said rotor is periodically moved by magnetic force with respect to said stator, whereby rotary motion is produced; said motor further having: an output shaft concentric with said stator; transmission means for absorbing oscillation and transmitting rotation; wherein said induced magnetic normal force rotates around the circumference of said stator, such that a contact patch between said rotor and said stator rotates around the inner circumference of said stator; whereby said rotor oscillates and rotates; whereby said transmission means absorb the oscillation of said rotor and transmit the rotation of said rotor to said output shaft; wherein said transmission means is magnetorheostatic fluid. A motor is further disclosed wherein said transmission means comprise bearings and carrier supports, wherein said bearings are used as a clutch. | 01-08-2009 |
20090066173 | Linear Drive Travel System and Automobile - To enable control the number of revolutions of a wheel with a new structure different from an induction motor and adjust the maximum torque rapidly and accurately. | 03-12-2009 |
20090134723 | ELECTRIC MOTOR DEVICE - The electric motor device is provided. The electric motor device includes: a first drive member that has a plurality of permanent magnets; a second drive member that has a plurality of electromagnetic coils; and a clearance controller that shifts at least either one of the first drive member and the second drive member, thereby changing a size of a clearance formed between the first drive member and the second drive member. | 05-28-2009 |
20100219704 | SPEED-VARIABLE SINGLE PHASE INDUCTION MOTOR - A speed-variable single phase induction motor. By a plurality of stators disposed with an interval therebetween and a plurality of magnetic rotors corresponding to the respective stators, the motor implements a high efficiency and a speed-variable performance such as a brushless direct current (BLDC) motor with a low cost without using an expensive inverter driving apparatus. | 09-02-2010 |
20110006620 | MOTOR AND ELECTRONIC APPARATUS USING THE SAME | 01-13-2011 |
20110031824 | GEAR MOTOR INCLUDING A COMPACT MULTIPLE-PHASE ELECTRIC MOTOR - The invention relates to a gear motor including a multiple-phase electric motor formed by a stator portion excited by electric coils and by a rotor having N pairs of poles radially magnetised in alternating directions, the stator portion including two angular sectors alpha- | 02-10-2011 |
20110062805 | SWITCHED RELUCTANCE MACHINE WITH EDDY CURRENT LOSS DAMPENER - A variable reluctance machine is disclosed, such as a switched reluctance machine, the machine having a rotor, a stator, a housing, and a magnetic eddy current dampening component disposed between stator and housing. The magnetic eddy current dampening component not only reduces the eddy current's impact on surrounding electronics, it also assists in increasing the efficiency of the switched reluctance machine. | 03-17-2011 |
20110140549 | LINEAR ACTUATING DRIVE, IN PARTICULAR FOR ADJUSTING THE FLAPS IN MOTOR VEHICLE TURBOCHARGERS - A linear actuator, in particular for adjusting the flaps in motor vehicle turbochargers. The linear actuator has an adjusting element that can be linearly displaced by an electric motor. The electric motor is a two-phase transverse flux machine. A rotor is arranged between two opposite single-phase stators, and the rotor is connected in a rotationally fixed manner to a rotatable and linearly stationary rotational element that engages with the linearly movable adjusting element in order to cause a linear movement of the adjusting element when the rotational element is rotated. | 06-16-2011 |
20120068559 | ROTATING SHAFT SUPPORT APPARATUS AND MAGNETIC MOTOR HAVING THE SAME - A apparatus is provided in which, in a state before being assembled to a drive target, one end of a rotating shaft is not supported by a bearing, and in this state, the rotating shaft is pressed to the side of a bracket by coil springs and thus centering of the rotating shaft is maintained. In this way, axial run-out of the rotating shaft before a magnetic motor is assembled to the drive target is inhibited. Thus, damage and deterioration in assembly efficiency as a result of axial run-out of the rotating shaft can be inhibited, such as deterioration in assembly efficiency caused by adhesion between a magnet and coils wound on an armature core, for example. | 03-22-2012 |
20120126640 | ROTARY ACTUATOR - A rotary actuator includes a stator on which a sensor surface is arranged and a rotor configured to rotate about the stator. The rotor forms an actuating surface for the sensor surface. An interval fixing device such as a rotationally fixed sliding disk is arranged between the actuating surface and the sensor surface. A spring is configured to press the sensor surface towards the actuating surface. | 05-24-2012 |
20120139368 | PULSED MULTI-ROTOR CONSTANT AIR GAP MOTOR CLUSTER - Electric motor cluster consisting of several stator sections each possessing a minimum of two salient pole projections, wound with power windings, and each section containing a single rotor. Each individual motor is angularly displaced one from the other, while mounted within a common housing, and geared together such that each motor section contributes to the rotation of a common output shaft. Each motor comprises at least one stator and one rotor section, such that each rotor section is associated with a specific stator section. The lateral axis of each rotor section is disposed at an oblique angle with respect to the axis of the shaft for that particular motor. | 06-07-2012 |
20120161552 | STEPPING MOTOR FOR METER - A stepping motor for a meter to rotate a pointer of a meter, the stepping motor for a meter includes: a rotor part having: a cylindrical magnet; and a rotational shaft, which is hollow and made of a resin, and which is molded on an inner periphery of the cylindrical magnet and is coaxial with the cylindrical magnet; a stator part that contains the rotor part therein and has an excitation coil; a front plate made of a resin, and an end plate made of a resin, wherein a fixing part to fix the cylindrical magnet is molded when molding the rotational shaft, and wherein the cylindrical magnet is fixed by the fixing part so that the cylindrical magnet and the rotational shaft are integrated. | 06-28-2012 |
20120280580 | COOLED FRACTIONAL-HORSEPOWER MOTOR - Cooling apparatus and methods for a fractional-horsepower motor. Motor cooling apparatus includes a heat shoe, a heat diffuser, and a heat pipe coupled therebetween. The heat shoe is configured to partially cover a portion of, and to receive motor thermal energy from, the motor. The heat pipe is coupled to the heat shoe, and is configured to convey the motor thermal energy from the heat shoe. Heat diffuser can be coupled to receive motor thermal energy from the heat pipe. It is configured to diffuse at least a portion of the motor thermal energy into an ambient atmosphere. A thermal sensor is coupled to the motor and configured to sense a motor thermal condition; and a fan can be coupled to the thermal sensor through a controller. The controller is configured to control the speed of the fan relative to the motor thermal condition sensed by the thermal sensor. | 11-08-2012 |
20130076164 | SWITCHED RELUCTANCE MOTOR - Disclosed herein is a switched reluctance motor including: a rotor part including a rotor core having a shaft fixedly coupled to the center thereof and a plurality of rotor poles formed to be protruded from the rotor core; a stator part having the rotor part rotatably received therein and a plurality of stator salient poles formed to be protruded from the stator yoke; a balancing part selectively coupled to an upper portion or a lower portion of the rotor part and having a plurality of sensing grooves formed in an outer peripheral surface thereof; a motor housing provided with an opening part through which the shaft penetrates; and a position detecting unit disposed between the rotor part and the stator part and coupled to an inner portion of the motor housing. | 03-28-2013 |
20130082548 | SWITCHED RELUCTANCE MOTOR - Disclosed herein is a switched reluctance motor in which a position detection part capable of detecting a rotational position of the rotor part is formed in a balancing member coupled to a rotor part and a sensor part is positioned at a position corresponding to that of the position detection part and on a cover surface of an inner side of the motor housing. According to a preferred embodiment of the present invention, the sensor part is positioned in the motor housing, thereby making it possible to protect the sensor part and improve reliability in sensing of a rotational position of the rotor part by the sensor part. | 04-04-2013 |
20130175891 | SWITCHED RELUCTANCE MOTOR - Disclosed herein is a switched reluctance motor including: a rotor part including a rotor core of which a shaft is fixedly coupled to a central portion and a plurality of rotor poles protruding from the rotor core; a stator part including a stator yoke rotatably receiving the rotor part therein and a plurality of stator salient poles protruding from the stator yoke so as to face the rotor poles; and auxiliary rotor poles coupled to outer portions of the rotor poles to rotate integrally with the rotor part. | 07-11-2013 |
20130207490 | ELECTRICAL MACHINE - An integrated starter generator device comprising a housing, a stator and a rotor contained within the housing, the device further comprising control electronics operable to configure the device as either a starter or generator and contained entirely within the housing. The device may include a high current terminal having brass and rubber bonded together. The rubber forms both a sealing and an insulating function. | 08-15-2013 |
20130320783 | STEP MOTOR ABLE TO ADJUST A HEADLIGHT'S UP AND DOWN - A step motor used to adjust a headlight's up and down includes a supporting pole, a magnet, a coil and a circuit board. The circuit board has a power input terminal subsequently connected with a voltage regulator IC, a control IC, a transistor and a driver. In addition, the driver is connected with the coil; the control IC is connected with a signal input terminal further connected with a vehicle compute; the power input terminal is connected with a vehicle power source. So when a vehicle is started, power can flow through and regulated by the voltage regulator IC. Then it runs through the control IC to command the driver to drive the negative coil to induce the magnet to rotate clockwise or counterclockwise, enabling the supporting pole to move inward or outward to horizontally balance the headlight. | 12-05-2013 |
20140117791 | D-RING IMPLEMENTATION IN SKEWED ROTOR ASSEMBLY - An assembly includes multiple adjoined rotor sections each having multiple poles and multiple void rows therethrough that are radially distributed in each of the poles. The rotor sections are skewed in a circumferential direction. The assembly also has multiple conductive rings that substantially surround one of the void rows. A method of assembly and electric machines and vehicles using the assembly are also disclosed. Aspects reduce torque ripple in electric machines and allow for encoderless/sensorless operation in an electric machine using the rotor assembly. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims. | 05-01-2014 |
20140217838 | MAGNETIC GEAR ARRANGEMENT HAVING A VARIABLE GEAR RATIO - A magnetic gear arrangement is provided having a magnetically active gear member that generates a first magnetic field, which is modulated by interpoles. The modulated magnetic field generates magnetic poles on a magnetically passive gear member, and these poles form a second magnetic field. The material of the passive gear member is sufficiently magnetically hard that the first and second magnetic fields interact to couple the motion of the active and passive gear members according to a given gear ratio. | 08-07-2014 |
20140333159 | HYBRID STEP MOTOR - A stepper motor is provided in which a permanent ring magnet is sandwiched in an outer part of the stator winding assembly located far from the gap between rotor and stator teeth, so that magnetic flux in the gap is dominated by the Ampere-turns of energized stator coils and therefore more easily controlled for reduced vibration at low stepping speeds. The rotor need not contain any permanent disk magnet. If one is provided, it can be completely embedded within the rotor and merely supplement the primary flux from the stator to enhance torque. In most cases, where the rotor lacks any permanent magnet, the motor's axial shaft can have a larger diameter and may, together with the rotor, form a linear actuator. | 11-13-2014 |
20150061419 | ELECTRIC HEATING DEVICE WITH OUTPUT GREATER THAN INPUT - The utility model discloses an electric heating device with an output greater than an input, including a stator, a rotor, an input controller and a base, characterized in that: the stator is composed of a permanent magnet and an electromagnet, the permanent magnet is disposed externally to the electromagnet. The rotor is composed of a rotor body and a rotor shaft, the rotor body is wholly or partly formed of ferromagnetic material. An end portion at one end of an electromagnet core faces the rotor body and remains a gap with the rotor body. The end portion may be magnetized with an N pole or an S pole under an action of the external permanent magnet. The input controller is connected with an electromagnetic coil. The utility model not only may achieve an output greater than an input, but also may achieve a 100% “output efficiency”. | 03-05-2015 |
20150108856 | ROTATING ELECTRIC MACHINE - In order to achieve improvement in speed and torque of a rotating electric machine according to an inexpensive, simple, and highly reliable method, Provided is a rotating electric machine including: a stator; a rotor that is rotatably arranged with an intermediation of an air gap in a rotating shaft direction with respect to the stator; and a primary-side mechanism that rotates concentrically with a shaft center of the rotor. The primary-side mechanism includes: a fixed position rotating pulley that is arranged so as to be immovable in the rotating shaft direction; and a variable position rotating pulley that is arranged so as to be movable in the rotating shaft direction with respect to the fixed position rotating pulley. The variable position rotating pulley rotates and moves in an axial direction integrally with the rotor. | 04-23-2015 |