Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8179008 | Axial gap rotary electric machine An axial gap rotary electric machine includes a rotor, an armature and a stator. The rotor is capable of rotating in a circumferential direction about a rotation axis. The rotor includes permanent magnets and magnetic plates which cover those from the armature side.... | 05/15/2012 |
| 8154165 | General purpose engine with axial gap type motor/generator The present invention achieves an improvement in the power generation capacity of a general purpose engine provided for a power generation application while realizing reductions in the weight and size thereof. An optional external apparatus can be attached to one sh... | 04/10/2012 |
| 8143757 | General purpose engine with axial gap type motor/generator The present invention achieves reductions in the weight and size of a general purpose engine provided for a power generation application. An optional external apparatus can be attached to one shaft part of a rotary shaft, and an axial gap type motor/generator consti... | 03/27/2012 |
| 8102090 | Brushless electric machine A first member (40a) has a magnet assembly (20) that includes a plurality of permanent magnets (10) held with their homopoles contacting one another. A second member (50a) includes magnet coils (30), and is designed t... | 01/24/2012 |
| 8040008 | Axial gap motor The axial gap motor includes the rotor having: a rotor frame including a plurality of ribs extending in a radial direction, an inner circumferential side annular shaft, and an outer circumferential side annular rim, which are integrally coupled to each other through... | 10/18/2011 |
| 7982352 | Electrical motor/generator having a number of stator pole cores being larger than a number of rotor pole shoes An axial magnetic flux electrical machine having a rotor attached to a shaft, the rotor comprising magnets and pole shoes; and a stator, the stator has a separate pole cores having corresponding separate coils, and the number of poles cores is larger than the number... | 07/19/2011 |
| 7923878 | Axial gap coreless motor and positioning unit An axial gap coreless motor includes a stator including a stator yoke having a surface and being composed of a plurality of laminated layers of silicon steel sheets secured together, a wiring substrate having a surface and being disposed on the stator yoke surface, ... | 04/12/2011 |
| 7906885 | Brushless electric machine A brushless electric machine includes a rotor and a stator. Each of the twin poles of the stator electromagnetic members corresponds to one of the two magnetic poles of the rotor magnetic assembles. Two radial component air-gaps are arranged between the stator and t... | 03/15/2011 |
| 7839041 | Rotary actuators Embodiments of actuators (20) comprise an electromagnetically conductive housing (22); a rotor (24); a first stationary pole member (48); a second stationary pole member (42); a first permanent magnet (44) connected to the f... | 11/23/2010 |
| 7821168 | Axial gap dynamo electric machine with magnetic bearing An axial gap electric dynamo machine has a horizontally disposed rotor disk that is stabilized at its periphery by a plurality of permanent magnets connected to a ferromagnetic bearing plate that provides an opposing or repulsive force against the rotor magnets. In ... | 10/26/2010 |
| 7808142 | Multivariable generator and method of using the same A generator device for generating electrical energy includes a rotor having a first set of even-numbered of magnetic sources distributed along a first radius of the rotor, and a first pair of stators, each having a first set of odd-numbered coil members distributed ... | 10/05/2010 |
| 7608964 | Motor, blower, compressor, and air conditioner It is an object of the present invention to provide techniques for improving efficiency and torque of a motor while achieving thinning of the motor. In a brushless DC motor, a rotor includes a magnetic-field creating magnet and a stator includes an armature winding.... | 10/27/2009 |
| 7608965 | Field controlled axial flux permanent magnet electrical machine An electrical machine is provided. The machine includes at least one rotor mounted for rotation about a central axis and at least two stator sections mounted axially adjacent to and on opposite sides of the rotor. The rotor includes two circumferentially arrayed row... | 10/27/2009 |
| 7557482 | Axial-flux electric machine An axial-flux electric machine includes a stator and a rotor. The rotor may be rotatable about a rotor rotation axis, and at least a portion of the stator may face at least a portion of the rotor at an axial interface between the stator and the rotor. The rotor may ... | 07/07/2009 |
| 7436137 | Drive regenerative control system Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a cont... | 10/14/2008 |
| 7408278 | Motor-generator with adjustable axial gap for vehicle A rotary electric machine capable of optionally adjusting output characteristic and an electric motor vehicle using the rotary electric machine are provided. A rotary electric machine is constituted with: a rotary shaft 220; a rotor 40 connected... | 08/05/2008 |
| 7382077 | Electric motor An electric motor comprises a stator (1, 5, 8) having an air-gap which extends around an axis and in which a rotating magnetic field is generated, and a rotor (11, 12, 13) comprising a shaft (11) which is rotatably held by a bearing (10) ... | 06/03/2008 |
| 7382072 | Generator An efficient and reconfigurable permanent magnet generator that comprises a permanent magnet subassembly and at least one exciter is disclosed. The permanent magnet generator may comprise a mainframe comprising at least one exciter, and a permanent magnet subassembl... | 06/03/2008 |
| 7348703 | Monopole field electric motor-generator with switchable coil configuration A pair of stators produce a magnetic field within a space between them a ferromagnetic toroidal rotor is rotationally mounted within the magnetic field. A plurality of windings are wound radially on the rotor and each winding provides a plurality of coils. Each of c... | 03/25/2008 |
| 7315105 | Device for an electrical machine A device for axially magnetized electrical machines, especially motors, having a rotor with permanent magnets and a stator with a series of windings on iron cores. The stator comprises a support pin (17), which is integrated or joined with a protruding flange... | 01/01/2008 |
| 7315102 | Axial gap motor An axial gap motor is described which comprises a rotor shaft rotatable about its axis in case. A rotor is fixed to the rotor shaft to rotate therewith. The rotor includes a plurality of magnets. A stator is disposed about the rotor shaft at a position to coaxially ... | 01/01/2008 |
| 7312543 | Driving device A stepping motor includes a magnet having a magnetized portion, first and second coils, a first yoke having a first-magnetic-pole portion, a second yoke having a second-magnetic-pole portion, and a rotating yoke having a third-magnetic-pole portion fixed to the sing... | 12/25/2007 |
| 7304409 | Driving device and light amount controller A low-cost, small-sized and high-output driving device which makes it possible to produce two outputs separately and is easy to handle. The driving device has two driving units comprised of a coil, a stator, a magnet, and a rotor. The two driving units are arranged,... | 12/04/2007 |
| 7279858 | Drive regenerative control system Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a cont... | 10/09/2007 |
| 7271514 | Rotor structure A rotor includes a rotary shaft, a rib provided on the rotary shaft, and a disc-form holding member. The holding member is joined to an axial end face of the rib. The holding member is thereby coupled with the rotary shaft. The holding member is provided with perman... | 09/18/2007 |
| 7268462 | Rotating electrical apparatus This invention provides a rotary electric machine with a high productivity/maintainability. Since the shaft portion 43 or the stepwise drawn portion is formed with a flat face 47 perpendicular to the rotational axis, when the magnetic poles 4... | 09/11/2007 |
| 7262536 | Gearless wheel motor drive system Methods and apparatus are provided for an electric vehicle embodying an axial flux traction motor directly coupled to a wheel thereof. The fraction motor includes a stator having coils for producing a magnetic field, an annular rotor magnetically coupled to the stat... | 08/28/2007 |
| 7259484 | Brushless motor A brushless motor 100 is composed of a motor base 10, a rotary shaft 25 rotatably supported by the motor base 10 through bearings 22 and 23, a back yoke 20 in a shape of flat plate made from a magnetic material being ... | 08/21/2007 |
| 7259488 | Rotary electric machine A rotary electric machine comprises a rotating shaft rotatably supported by bearings, a rotor attached integrally with the shaft and a stator facing the rotor. The stator includes a plurality of coils arranged substantially in a circular form in a rotating direction... | 08/21/2007 |
| 7259492 | Rotor axial activation modulation of electric machinery due to reverse torque The invention involves installation of a helical nut structure, or a helical nut and ball or roller bearing structure, between an electric machinery transmission shaft and a driven transmission element. Depending on the torque between the electric machinery rotor, a... | 08/21/2007 |
| 7242123 | Actuator, light quantity adjusting apparatus, and stepping motor An actuator maintains high efficiency, can react to an increase in pole, has a high part fit, and can be manufactured at low cost while it is thinned. The actuator includes a magnet which is formed in a ring shape, in which at least one surface perpendicular to a ce... | 07/10/2007 |
| 7187098 | Axial gap rotating electrical machine An axial gap rotating electrical machine is provided with permanent magnets and cores in a rotor. The permanent magnets are oriented such that magnetization surfaces face in the circumferential direction of the rotor. The cores are arranged alternately with the perm... | 03/06/2007 |
| 7173354 | Flat noncommutator vibration motor Disclosed is an improved flat vibration motor to be disposed in a mobile communication terminal, etc. for generating a vibration signal. A brushless-type vibration motor without brushes and a commutator is adopted, instead of a brush-type vibration motor with the br... | 02/06/2007 |
| 7173357 | Axial gap type dynamo-electric machine There is provided an axial gap type rotating electric machine which is small-sized and achieves a high motor efficiency as a drive source having a high torque using, for example, a strong magnet by reducing an energy loss by an induced current. An axial gap t... | 02/06/2007 |
| 7170212 | Synchronous axial field electrical machine A permanent magnet electrical machine comprises a first substantially planar member (9, 10) and a second substantially planar member (3) arranged substantially parallel to the first substantially planar member. The first and second members are rotatabl... | 01/30/2007 |
| 7157829 | Axial flux permanent magnet generator/motor The present invention is related to a permanent magnet electrical generator/motor comprising a stator, a rotor, a rotational axis and an air gap between stator and rotor so that the magnetic flux across said air gap is essentially oriented along said rotational axis... | 01/02/2007 |
| 7154193 | Electrical machine with double-sided stator Machines useful for wind turbine and ship propulsion purposes include a wind turbine generator or a ship propulsion motor with two concentric air gaps. In one embodiment, the machine includes a rotor with an inner rotor core and an outer rotor core; and a double-sid... | 12/26/2006 |
| 7154192 | Electrical machine with double-sided lamination stack The machine includes a rotor with an inner rotor core and an outer rotor core and a double-sided stator with an inner stator side and an outer stator side. The double-sided stator is concentrically disposed between the inner rotor core and the outer rotor core of th... | 12/26/2006 |
| 7145277 | Rotary electric machine for a permanent magnet synchronous motor A rotary electric machine comprises a rotating shaft 7 rotatably supported by bearings 2, 3, a rotor 23 attached integrally with the rotating shaft 7, and a stator 5 arranged facing the rotor 23. The stator 5 includes... | 12/05/2006 |
| 7116027 | Magnet for a dynamo-electric machine A magnet for a dynamo-electric machine has a plurality of magnetic poles disposed substantially in a circular shape and opposite a plurality of teeth disposed substantially in a circular shape, the magnetic poles and teeth separated by a gap in an axial direction of... | 10/03/2006 |
