| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310154030 |
Means for securing magnet
| 23 |
| 310154210 |
Permanent magnet characterized by the shape of the magnet
| 18 |
| 310154280 |
Specific magnetization
| 17 |
| 310154020 |
Combined with generating coil
| 12 |
| 310154450 |
Multiple pole pairs
| 6 |
| 310154260 |
With means to prevent or reduce demagnetization (i.e., auxiliary magnetic poles) | 3 |
| 20090121572 | Electric machinery of permeable polar face & magnetic circuit sandwiched PM magnetic pole - An electric machinery provided with a PM magnetic pole sandwiched by a permeable polar face and a magnetic circuit from an individual magnetic pole provides an innovative design of having disposed the PM magnetic pole sandwiched between the permeable polar face and the magnetic circuit from the individual magnetic pole to prevent PM magnetic pole from falling off and avoid PM magnetic pole magnetic force from being weakened by inverse excitation during the operation. | 05-14-2009 |
| 20140375160 | ELECTRICAL MACHINE - An electrical machine, in particular an electric motor of a motor vehicle, having a stator and having a rotor which has a rotation axis. In this case, an electrical machine can be a brushless electric motor (DC motor) or a synchronous machine, but also a generator. The stator or the rotor has an electromagnet structure and the other has a permanent-magnet structure which comprises a first quantity of permanent magnets and a second quantity of permanent magnets. At an operating temperature, the magnetic coercive field strength of the first quantity is greater than the magnetic coercive field strength of the second quantity. | 12-25-2014 |
| 20150115757 | SYSTEM AND METHOD FOR HEATING FERRITE MAGNET MOTORS FOR LOW TEMPERATURES - A system and method for heating ferrite permanent magnets in an electrical machine is disclosed. The permanent magnet machine includes a stator assembly and a rotor assembly, with a plurality of ferrite permanent magnets disposed within the stator assembly or the rotor assembly to generate a magnetic field that interacts with a stator magnetic field to produce a torque. A controller of the electrical machine is programmed to cause a primary field current to be applied to the stator windings to generate the stator magnetic field, so as to cause the rotor assembly to rotate relative to the stator assembly. The controller is further programmed to cause a secondary current to be applied to the stator windings to selectively generate a secondary magnetic field, the secondary magnetic field inducing eddy currents in at least one of the stator assembly and the rotor assembly to heat the ferrite permanent magnets. | 04-30-2015 |
| 310155000 |
Inductor type | 3 |
| 20090309445 | Low Torque Rotary Electric Generator - A low torque rotary electric generator includes a rotor, a stator and a housing. The rotor includes a shaft, an inductor retainer, a first set of inductors and a second set of inductors. The first and second set of inductors are retained on each end of the inductor retainer. The shaft is retained in the inductor retainer. The stator preferably includes a first permanent ring magnet, a second permanent ring magnet and a plurality of generator coils. The permanent ring magnets and the plurality of generator coils are retained on an inside perimeter of the housing. The permanent ring magnets are retained adjacent each end of the rotor. Each permanent ring magnet may be replaced with a plurality of individual permanent magnets. Each generator coil is disposed between the first and second inductors. The housing preferably includes a tubular member, a first end cover and a second end cover. | 12-17-2009 |
| 20100314961 | MAGNETIC FLUX SWITCHING TYPE ELECTRIC GENERATOR USING SHIELDING MEMBER AS PERMANENT MAGNET - Disclosed is a magnetic flux switching type electric generator using a shielding member as a permanent magnet in that a magnet is fixed and a shielding member is formed at a passing portion of the magnetic flux, so that the magnetic flux is repeatedly opened and blocked through a continuous revolution or a repeated motion of the shielding member to generate induced electricity, whereby the amount of generation of electric power can be more and more increased. The magnetic flux switching type electric generator comprises: a pair of coil cores arranged on both sides thereof and having coils wound thereon respectively; a magnet connected to the pair of coil cores having the wound coils and allowing the coil cores to be polarized as a north pole and a south pole respectively; and a shielding member formed at a passing portion of the magnetic flux between the pair of the coil cores having the coils arranged on both sides thereof, wherein the magnetic flux is repeatedly opened and blocked through a repeated motion of the shielding member to bring about a change of a magnetic field, whereby generating induced electricity. | 12-16-2010 |
| 20160149446 | IMPROVEMENTS TO ROTATING MAGNETIC FIELD MACHINES - The patent entitled “Improvements to rotating magnetic field machines” relates to changes to the structures of the stator and of the inductor system of conventional rotating magnetic field machines. The first change consists of the fact that the stator poles are axial, so that there are no slots between the shoes thereof in the air gap, the windings are in the axial portion and are prefabricated coils, eliminating power loss, electromagnetic and mechanical vibration, electromagnetic emissions, and start-up torque, with a much lower copper content. The second change concerns the inductor system, which is made up of multiple cores, with a shared collector and yoke, which greatly reduces the amount of copper needed, with external dimensions similar to those of the conventional electromagnet that they replace in these machines or in any other sphere of use, for the same number of amperes per turn. It may be used in all rotating field machines. | 05-26-2016 |
| 310154430 |
Additional permanent magnets | 2 |
| 20120299428 | Swashplate-Mounted Permanent Magnet Alternator - A swashplate system includes a rotating outer ring and a non-rotating inner ring, the rotating outer ring being adapted to carry a coil of wire and the non-rotating inner ring being adapted to carry a first and a second magnet. The first and second magnets create a magnetic field and an electrical current is created as the coil of wire passes through the magnetic field as the rotating outer ring rotates. | 11-29-2012 |
| 20140252901 | INDUCTOR TYPE ROTARY MOTOR - The inductor type rotary motor of m-phase (m represents an integer of 2 or more) includes a stator in which distal ends of teeth are circularly disposed, and a rotor having an inductor tooth that faces each of the distal ends of the teeth through a constant gap. The stator includes k·m teeth (k represents an integer of 1 or more), at least one permanent magnet is disposed at each of the teeth, and adjacent permanent magnets, which belong to teeth adjacent to each other, are disposed in such a manner that different polarities face each other. | 09-11-2014 |
| 310154310 |
Single pole pair | 2 |
| 20090039724 | DIRECTED FLUX MOTOR - A directed flux motor described utilizes the directed magnetic flux of at least one magnet through ferrous material to drive different planetary gear sets to achieve capabilities in six actuated shafts that are grouped three to a side of the motor. The flux motor also utilizes an interwoven magnet configuration which reduces the overall size of the motor. The motor allows for simple changes to modify the torque to speed ratio of the gearing contained within the motor as well as simple configurations for any number of output shafts up to six. The changes allow for improved manufacturability and reliability within the design. | 02-12-2009 |
| 20140077649 | ELECTRIC MOTOR - The invention relates to a rotatory electric motor ( | 03-20-2014 |
| 310154440 |
Additional shield or coating (non-magnetic) | 1 |
| 20140239763 | DUAL MAGNETIC PHASE STATOR LAMINATIONS FOR STATOR PERMANENT MAGNET ELECTRIC MACHINES - A dual magnetic phase stator lamination for use in stator permanent magnet electric machines is disclosed. The permanent magnet electrical machine includes a rotor mounted for rotation about a central axis and a stator positioned about the rotor and comprising a plurality of stator laminations, wherein each of the stator laminations is composed of a dual magnetic phase material and includes a first stator lamination portion comprising a magnetic material and a second stator lamination portion comprising a non-magnetic material, the second stator lamination portion comprising an area positioned adjacent to each of a plurality of permanent magnets embedded in the stator lamination. The second stator lamination portion comprises a heat treated portion of the stator lamination, with the heat treating of the second stator lamination portion rendering the dual magnetic phase material of the stator lamination non-magnetic at the locations of the second stator lamination portion. | 08-28-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20080238233 | Fault-tolerant permanent magnet machine with reconfigurable stator core slot opening and back iron flux paths - A permanent magnet (PM) machine includes a plurality of reconfigurable fault condition mechanisms disposed within a stator core portion, the plurality of reconfigurable fault condition mechanisms together automatically reconfigurable to reduce fault currents and internal heat associated with the PM machine during a fault condition. The plurality of reconfigurable fault condition mechanisms are disposed solely within the stator core portion according to one embodiment to automatically reduce stator winding fault currents and internal heat associated with the PM machine during a fault condition. A method of reconfiguring the fault condition mechanisms upon detecting a fault condition includes the steps of 1) selecting the plurality of reconfigurable fault condition mechanisms from a) a plurality of rotatable magnetically anisotropic cylinders disposed both within a stator back iron and stator slot openings, and b) a plurality of rotatable magnetically anisotropic cylinders disposed within a stator back iron and a sliding shield disposed with a stator slot opening portion of the stator core, and 2) reconfiguring the plurality of fault condition mechanisms together to automatically reduce fault currents associated with the PM machine upon detection of a fault condition. | 10-02-2008 |
| 20080272664 | PERMANENT MAGNET ELECTRO-MECHANICAL DEVICE PROVIDING MOTOR/GENERATOR FUNCTIONS - Apparatus and methods for providing and controlling a permanent magnet electro-mechanical device that functions as a motor or generator are disclosed. The electro-mechanical device uses control coils to steer magnetic flux of permanent magnets placed between stator segments. The control coils can be wound around the bridge of a stator segment, the poles of a stator segment or both. The electro-mechanical device can be single phase or multi-phase and can include controllers, sensors, a thermal/electrical insulating structure, or a reluctance gap. The stator poles are grouped and designed with an angular spacing that is based on the number of permanent magnets. The electro-mechanical device has a higher power density than conventional motors and generators and operates more efficiently, while operating at cooler temperatures. | 11-06-2008 |
| 20090045687 | Inertia permanent magnet generator unit - An inertia permanent-magnet generator unit includes a body containing a stator structure, multiple pairs of permanent magnets on the stator structure; a rotor structure in the body, a central shaft penetrating a center of the body; multiple rotor blades being disposed to the rotor structure; and multiple troughs with each disposed on a top of the rotor blade in relation to the stator structure; multiple copper coils winding in troughs on tops of those rotor blades; a weight disposed on a rotor blade; and the rotor structure rotating forwardly by inertia to cut magnetic lines of force of the permanent magnets to generate electricity. | 02-19-2009 |
| 20090134729 | Small DC motor - A small DC motor includes: a motor frame including a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that includes four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle including the four sides; field magnets; and an armature assembly, wherein the field magnets are provided so as to be spaced apart from each other, and the small DC motor includes an air gap between each of the four sides and a radially outermost surface of the armature assembly, the air gap being a minimum size needed to rotate the armature assembly. | 05-28-2009 |
| 20100141073 | IZUOGU MACHINE (THE TIME-LIMITED SELF SUSTAINING EMAGNETODYNAMICS MACHINE) - The present application relates to THE IZUOGU MACHINE (the time-limited self sustaining emagnetodynamics machine). The abstract of the disclosure is submitted herewith as required by | 06-10-2010 |
| 20100176675 | ELECTRIC ROTATING MACHINE, MAINLY FOR THE STARTER OF AN AUTOMOTIVE VEHICLE - A DC electric rotating machine, mainly for the starter of an automotive vehicle. The machine includes a stator including a wound structure forming a plurality of poles extending along the circumference of the stator, a rotor, and a set of brushes adapted for the electric supply of the rotor by commutation of the electric current in sections of the rotor. The wound structure of the stator includes a plurality of slots between two central parts of consecutive poles of the stator, these slots being formed in a magnetic body of the stator. At least one of the slots including at least one conducting segment forming a winding of an electrical coil. | 07-15-2010 |
| 20100181856 | MAGNETICALLY DRIVING DEVICE - A magnetically driving device includes a first supporting member, a second supporting member, a first magnet set and a second magnet set. The second supporting member is movable with respect to the first supporting member. The first magnet set includes at least one first magnet unit. The first magnet unit has a first magnetic pole and a second magnetic pole of different polarities. The second magnet set includes at least one second magnet unit. The second magnet unit has a first magnetic pole and a second magnetic pole of different polarities. The magnetization directions of the first magnetic poles of the first magnet unit and the second magnet unit are not parallel with each other, so that a magnetic force generated between the first magnet unit and the second magnet unit drives movement of the second supporting member with respect to the first supporting member. | 07-22-2010 |
| 20100244604 | POWER GENERATING APPARATUS AND MOTOR - A power generating apparatus and a motor are disclosed. The disclosed power generating apparatus comprises a stator being comprised of nonferrous metal; and a rotator. The disclosed motor comprises a field iron core; a motor case being comprised of nonferrous metal; and a stator magnet having the same width as the width of a magnet facing portion of the field iron core. By he disclosed power generating apparatus and the disclosed motor, the efficiency is enhanced. | 09-30-2010 |
| 20120133228 | GENERATOR WITH NON-MAGNETIC ROTOR - The generator contains an outer casing, a non-magnetic rotor, an inner casing, outer stators, and inner stators. The non-magnetic rotor has an internal storage space, and is axially mounted on an axle and housed inside the outer casing with the axle rotatably supported by two ends of the outer casing. The outer stators are configured on an inner circumferential surface of the outer casing. Correspondingly, a number of coils are configured on an outer circumferential surface of the non-magnetic rotor. The inner casing is housed inside the storage space with the inner stators configured on an outer circumferential surface of the inner casing. The inner casing is rotatably configured on the axle by a number of bearings. The outer and inner stators are of reversed magnetic polarities so that, when the axle spins, the inner stators remain still due to the magnetic attraction from the outer stators. | 05-31-2012 |
| 20120153760 | Yoke for a permanent magnet machine - A yoke for a permanent magnet machine shows a surface with an accommodation area for accommodating a permanent magnet, wherein two recesses are provided adjacent to the accommodation area to increase reluctance. | 06-21-2012 |
| 20120194022 | ELECTRIC MOTOR - An electric motor has a stator and a rotor rotatably installed in the stator. The stator includes a housing, a plurality of magnets installed at an inner surface of the housing, a brush card installed inside of the housing, brushes mounted on the brush card, lead wires for connecting to a power source and feeding power to the brushes, and an end cap attached to an end of the housing and covering the brushes. The rotor includes a shaft, a commutator fixed on the shaft, a rotor core fixed on the shaft and a winding wound on the rotor core and connected to the commutator. An EMI suppression component is mounted on the brush card and covered by the end cap, and the lead wires extends through the EMI suppression component. | 08-02-2012 |
| 20120194023 | ELECTRIC MOTOR - An electric motor includes a stator and a rotor rotatably installed in the stator. The stator has a housing and a plurality of permanent magnets. The outer diameter of the housing is less than 40 mm and the ratio of the maximum thickness of the magnets in the radial direction of the rotor to the diameter of the rotor is in the range of 1:7 to 1:50. | 08-02-2012 |
| 20130162087 | WINDSHIELD WIPER MOTOR - A wiper motor | 06-27-2013 |
| 20130241334 | PERMANENT MAGNET, AND ELECTRIC MACHINE COMPRISING SAME, AND A METHOD FOR PRODUCING THE ELECTRIC MACHINE - Permanent magnet ( | 09-19-2013 |
| 20130249339 | MOTOR - A winding structure which is disposed over an armature and a commutator includes an equalizer. The equalizer includes a going portion and a return portion which are wound across one group of teeth through a slot and connected between two identical segments. In a case where an integer number is an expansion value among values which are integer multiples of a value which is acquired by dividing the total number of the slots by the total number of pole pairs, when one group of the teeth having the same total number as the expansion value is given as an element teeth group, the going portion and the return portion are wound across the element teeth group through the slots positioned at both sides of the element teeth group. | 09-26-2013 |
| 20140042852 | AXIAL FLUX PERMANENT MAGNET MOTOR - Disclosed herein is an axial flux permanent magnet (AFPM) motor including: a stator including a stator core, a magnet wire wound around the stator core, a shaft, and a stator core supporting member fixedly supporting the stator core to the shaft; and a rotor including a rotor case having a space part formed therein so as to receive the stator core therein, a magnet fixedly coupled to an inner side portion of the rotor case so as to face the stator core, and a bearing rotatably supporting the rotor case to the shaft, wherein a ratio between the number of stator slots by the stator core and the number of poles of the rotor by the magnet is (6×n+9):((6×n+9)+1) or (6×n+9):((6×n+9)−1) where n indicates a positive integer number including 0. | 02-13-2014 |
| 20140145537 | ELECTRIC MOTOR HAVING AN APPROXIMATED ELLIPSOID SHAPED ROTOR - In one embodiment, a motor has a rotor with an approximated ellipsoid shape defined by a plurality of lattice lines and a plurality of lattice points. The motor has a matching stator that is configured to be utilized in conjunction with the approximated ellipsoid shaped rotor and to accommodate the approximated ellipsoid shaped rotor. The motor may also includes a housing unit configured to hold the matching stator that is utilized in conjunction with the approximated ellipsoid shaped rotor, and an enclosure lid configured to be used by the housing unit. The enclosure lid may be configured to hold the rotor having the approximated ellipsoid shape with a bearing. | 05-29-2014 |
| 20140285047 | EcoCharge - The earth's magnetic field has not been mined as a source of energy for electric vehicles. With average field strength of 0.5 Tesla around the world it is easy to understand why it has been overlooked. A disruptive technology is needed to mine the earth's magnetic field for powering electric vehicles. Such a technology, graphene, is now at an early stage of development with excellent properties in the form of high conductivity, low resistivity sheets that are durable, light weight, and low cost. Electrical properties of multiple sheets of graphene provide a significant multiplier to earth's weak magnetic field yielding a feasible source of ecologically clean power for electric vehicles. Graphene based EcoCharge systems can be mounted on a vehicles drive shaft and axles putting graphene in motion to mine the earth's magnetic field. Estimates show that EcoCharge can generate 15.1 kW at 60 mph while weighing only 10 oz. | 09-25-2014 |
| 20140354099 | MAGNETIC MOTOR - A magnetic motor includes a rotor and a stator, in which there are magnets and materials of high magnetic permeability. The stator magnets are arranged with surfaces facing the rotor magnets in a staggered arrangement. The motor may be used to boost torque, for example in bicycles. | 12-04-2014 |
| 20150061440 | Halbach Array Electric Motor with Substantially Contiguous Electromagnetic Cores - Halbach Array electric motor with substantially contiguous electromagnetic cores, comprised of a plurality of electromagnets arranged in Halbach Array sequence, whose horizontal cores are equipped with fork-like prongs to provide substantial contiguity with vertical cores, assembled to serve as a circular or linear stator, rotor or both, and a plurality of permanent magnets likewise arranged in a Halbach Array sequence, assembled to serve as a circular or linear stator or rotor where required. | 03-05-2015 |
| 20160027567 | Manufacturing Method for Bonded Magnet and Motor Using the Magnet - A bonded magnet of the present invention has a configuration that it contains at least a magnetic powder and a binder, and in which the magnetic powder and the binder are mixed such that a content of the magnetic powder is 98 mass % or more and a content of the binder is more than 0 mass % and 2 mass % or less. Accordingly, a bonded magnet having good magnetic characteristics and high heat resistance can be attained. | 01-28-2016 |
| 20160079813 | Time Machine Propulsion - The invention relates to a propulsion device for a space craft wherein matter is accelerated to increase its mass and therefor its gravity. A method utilizing Albert Einsteins theory related to the increase in mass with acceleration. Accelerated mass exudes gravity, which can be used to pull objects through space. | 03-17-2016 |
| 20160118848 | PERMANENT MAGNET MACHINE - A permanent magnet machine includes a stator configured to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity, a rotor disposed inside said cavity and configured to rotate about the longitudinal axis, and a plurality of permanent magnets for generating a magnetic field, which interacts with the stator magnetic field to produce a torque. At least one of the plurality of permanent magnets has a light rare earth material including neodymium and praseodymium, and less than about 5 weight percent of a heavy rare earth material, wherein the weight percentage of neodymium is larger than the weight percentage of praseodymium but smaller than three times of the weight percentage of praseodymium. | 04-28-2016 |
| 20160254709 | MAGNETIC MOTOR | 09-01-2016 |
