Permanent Magnet Machines Patents (Class 310/152)
  • Patent number: 7411321
    Abstract: An electromagnetic engine has inner and outer rotors having magnets of opposite polarity mounted thereon. Output is taken from the inner rotor, which is free to unidirectionally rotate. The outer rotor is caused to oscillate, the force of magnetic repulsion between the magnetic fields of the inner and outer rotors driving rotation of the inner rotor. The outer rotor may be held stationary by solenoids and holding gears when the inner and outer magnetic fields are closely adjacent in order to maximize the force of repulsion. The timing of the oscillation and pausing of the outer rotor may be controlled by EPROM circuitry and a timing sensor mounted on the output shaft or gear. Alternatively output is taken from the outer rotor, which is free to unidirectionally rotate while inner rotor is caused to oscillate, the magnetic forces between the inner and outer rotors driving rotation of the outer rotor.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: August 12, 2008
    Inventors: Herman Wilt, Kathrine Wilt, James E. Wiggins
  • Publication number: 20080174121
    Abstract: There is provided a device capable of utilizing magnetic and gravitational forces to generate electrical energy. The device includes a base having a generator coupled thereto. The generator includes a shaft capable of rotating to generate electrical energy. The device further includes a circular frame having an inner perimeter. The circular frame is coupled to the base. The circular frame includes a first magnet coupled thereto. The device additionally includes an arm coupled to the generator shaft. The arm rotates within the circular frame inner perimeter. The arm includes a hammer head having a second magnet. The polarity of the second magnet is similar to the polarity of the first magnet. The first magnet is positioned such that the similar polarities of the first and second magnet create a force which propels the arm in the direction of rotation.
    Type: Application
    Filed: January 23, 2007
    Publication date: July 24, 2008
    Inventor: Scott Wattenbarger
  • Patent number: 7402929
    Abstract: A magnetic motor that includes a plurality of rotor magnet assemblies, a plurality of drive magnet assemblies that are laterally moveable with respect to the rotor magnet assemblies, a timing assembly for generating power pulses selectively supplied to the drive magnet assemblies and electromagnetic coils associated with the drive magnet assemblies to receive the power pulses from the timing assembly to momentarily disrupt the magnetic field of such assemblies at selected times.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: July 22, 2008
    Inventor: Monte Dilliner
  • Patent number: 7400075
    Abstract: A rotating apparatus includes a separating member, at least one movable magnet, and at least one passive magnet. The separating member is made of a nonmagnetic material, and interposed between the movable magnet and the passive magnet. The movable magnet is relatively shifted from the separating member along one surface of the separating member, and N-pole and S-pole of the movable magnet are arranged along the one surface of the separating member. The passive magnet is placed on the other surface of the separating member, and coupled with the movable magnet by magnetic force. When the movable magnet and the separating member are shifted relatively to each other, the passive magnet is shifted along the movable magnet and rotated on the other surface of the separating member.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: July 15, 2008
    Inventor: Man-Suk Park
  • Publication number: 20080164778
    Abstract: A magnetic motor which includes an elongated, horizontally disposed frame having a drive shaft rotatably mounted therein with the drive shaft being supported at its opposite ends by titanium bearing blocks. Opposing first and second slide panels having bar magnets at the inner surfaces thereof are movably mounted on the frame and are movable towards the drive shaft which has magnets mounted thereon in a helical fashion. As the slide panels with the magnets thereon are moved towards the drive shaft, the magnets on the slide panels will cause the magnets on the drive shaft to be repelled thereby causing the rotation of the drive shaft. Movement of the slide panels is controlled by actuators.
    Type: Application
    Filed: November 27, 2007
    Publication date: July 10, 2008
    Inventor: Steven James Schieffer
  • Patent number: 7385325
    Abstract: The present invention relates to a magnetic propulsion motor comprising a magnetic drive assembly comprising a drive magnet, a rotating hub, and a motion magnet attached to the rotating hub to rotate the motion magnet proximate to the magnetic drive assembly. A driving force is applied to the magnetic drive assembly, which causes the drive magnet to rotate to a position proximal to the motion magnet when the motion magnet is in a position proximate to the magnetic drive assembly. This arrangement exerts a repelling force on the motion magnet from the drive magnet as the motion magnet rotates away from the magnetic drive assembly. The rotation of the drive magnet also rotates the drive magnet to a position distal to the motion magnet as the motion magnet approaches the position proximate to the magnet drive assembly thereby minimizes the repelling force exerted on the motion magnet from the drive magnet as the motion magnet rotates towards the magnetic drive assembly.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: June 10, 2008
    Assignee: Future Force, LLC
    Inventor: Mike Tkadlec
  • Publication number: 20080122298
    Abstract: This abstract section is written to explain this patent application. A magnetic motion has been found utilizing the sides and corners of permanent magnets. This motion has been taught at public schools by myself and the magnetic motion at certain angles continues to perform without fail. The intent of this inventor is to continue to develop and teach this magnetic motion and the set-up to achieve this motion. An engine/motor capable of picking up a load, while under a load is the final goal of this effort. This patent is for a magnetic motion, a magnetic motion demonstrator, and a teaching tool itself. Any future engines/motors using this method of magnetic motion will fall under this patent in the fundamental's area only not in the individual improvements of future patents. If allowed, an itemized list of non-patent-able fundamentals/techniques will be included.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 29, 2008
    Inventor: Joseph Stuart Roberts
  • Publication number: 20080024017
    Abstract: A magnetic energy power machine has a base, a power wheel-set and a driving devices pivotally mounted through the base. The power wheel-set has a power shank, which is connected with a follower wheel, and multiple eccentric cams with multiple embedded first permanent magnets are mounted on the power shank. A driving wheel engaged with the follower wheel is mounted on a driving shaft mounted rotatably on the base. The driving shaft has multiple motivate members and each motivate member is embedded with a second permanent magnet. The magnetic energy power machine may further have a brake device to stop the rotating power wheel-set or a clutch device to disengage the follower wheel from the driving wheel therefore to stop the power supply of the magnetic energy power machine. The interaction of the second permanent magnet and the first permanent magnets generates continuous power.
    Type: Application
    Filed: July 31, 2006
    Publication date: January 31, 2008
    Inventor: Yow-Chang Chen
  • Publication number: 20070284956
    Abstract: An energy-generating assembly comprises a disc assembly, multiple driver magnets, and magnet holders. The disc assembly comprises a disc member, an axle, and a plurality of circumferentially spaced propeller magnets. The magnets each comprise opposing pole ends. The propeller magnets are fastened to the disc member adjacent its outer periphery via like pole ends. Certain like pole ends thereby extend outwardly from the outer periphery. The disc member is rotatable about the axle axis. The magnet holders enable the user to adjustably mount each driver magnet adjacent the outer periphery. The like magnetic poles of the driver magnets and the propeller magnets are magnetically repulsive to one another. The driver magnets are linearly displaceable via the magnet holders. The linearly displaceable driver magnets function to selectively adjust the magnetic repulsion intermediate like magnetic poles for imparting rotational motion to the disc assembly, the disc assembly for generating energy.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventors: Garrett Petrovich, Terence Petrovich
  • Patent number: 7291944
    Abstract: An electromagnetic engine has an inner rotor and an outer rotor having magnets of opposite polarity mounted thereon. Output is taken from the inner rotor, which is free to rotate in a single direction. The outer rotor is caused to oscillate, the force of magnetic repulsion between the magnetic fields of the inner and outer rotors driving rotation of the inner rotor. The outer rotor may be held stationary by solenoids and holding gears when the inner and outer magnetic fields are closely adjacent in order to maximize the force of repulsion. The timing of the oscillation and pausing of the outer rotor may be controlled by EPROM circuitry and a timing sensor mounted on the output shaft or gear.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: November 6, 2007
    Inventors: Herman F. Wilt, Jr., Kathrine Wilt, James E. Wiggins
  • Publication number: 20070228857
    Abstract: An efficient system for converting the energy associated with moving magnetic fields into a rotational torque. The system includes at least two stationary magnetic ribbons, each arranged in a generally semi-circular configuration and positioned about a central axis. A fixed hub assembly is positioned on the central axis. A rotating carousel assembly is positioned on the fixed hub. At least two spindles are supported on the carousel assembly. Rotation of the carousel assembly operates in conjunction with rotation of the spindles. At least two permanent magnets are positioned in pairs on the spindles. An output shaft is connected to the rotating carousel. The spindle magnets are attracted to the magnetic ribbons and as they are drawn towards them transfer this motion to the carousel assembly. The carousel assembly hands off the spindle magnets to the next magnetic ribbon regularly arranged around the rotation point on the fixed hub.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 4, 2007
    Inventor: Alva D. Barnes
  • Patent number: 7265471
    Abstract: Energy is generated by an apparatus and process which utilize magnetic forces to move a rotor in a circular direction to turn a rotor shaft. This apparatus and process convert magnetic energy into mechanical force or electrical energy.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: September 4, 2007
    Assignee: M International, LLC
    Inventor: Harry Paul Sprain
  • Patent number: 7259485
    Abstract: A braking magnet is attached to the housing of a motor of a motorized component such as a window covering. With this structure the motor is braked from turning under the weight of the window covering when deenergized.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: August 21, 2007
    Assignee: Somfy SAS
    Inventors: Pierre-Emmanuel Cavarec, Winston Glenn Walker
  • Patent number: 7235909
    Abstract: In some embodiments, an electromagnetic motor/generator may include one or more of the following features: (a) a frame, (b) a magnetic section having an upper magnet, a lower magnet, and a center magnet, coupled to the frame, and (c) at least one solenoid coupled to the frame and the center magnet.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: June 26, 2007
    Inventor: James Alfred Moe
  • Patent number: 7218025
    Abstract: A rotational magnetic electrical generating device produces an alternating electrical current generated by a central rotational magnetic cylinder with an inner cavity having an central fixed coil operated by a DC current providing a driving rotational force upon a plurality of embedded neodymium magnets within the inner cavity of the central rotational magnetic cylinder, the central rotational magnetic cylinder having an upper outer margin with an upper magnetic ring and a lower outer margin having a lower magnetic ring, the two magnetic rings suspending the central rotational magnetic cylinder between two fixed magnetic fields supported by a frame member, the central rotational magnetic cylinder further having an outer perimeter surface embedded with a plurality of neodymium alloy magnets equally sized and spaced apart, a lower surface embedded with a plurality of neodymium alloy magnets equally sized and spaced apart, and an upper surface embedded with a plurality of neodymium alloy magnets equally sized an
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: May 15, 2007
    Assignee: Contiempo Energy, LLC
    Inventor: Donnie Pat McDonald
  • Patent number: 7199498
    Abstract: Electromechanical systems utilizing suspended conducting nanometer-scale beams are provided and may be used in applications, such as, motors, generators, pumps, fans, compressors, propulsion systems, transmitters, receivers, heat engines, heat pumps, magnetic field sensors, kinetic energy storage devices and accelerometers. Such nanometer-scale beams may be provided as, for example, single molecules, single crystal filaments, or nanotubes. When suspended by both ends, these nanometer-scale beams may be caused to rotate about their line of suspension, similar to the motion of a jumprope (or a rotating whip), via electromagnetic or electrostatic forces. This motion may be used, for example, to accelerate molecules of a working substance in a preferred direction, generate electricity from the motion of a working substance molecules, or generate electromagnetic signals. Means of transmitting and controlling currents through these beams are also described.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: April 3, 2007
    Assignee: Ambient Systems, Inc.
    Inventors: Joseph F. Pinkerton, John C. Harlan
  • Patent number: 7157828
    Abstract: In a fuel pump, four permanent magnets are installed in a housing. An armature is installed inside the permanent magnets rotatably. Six magnetic pole coil portions of the armature are installed in a central core. Each magnetic pole coil portion has a coil core, a bobbin and a coil formed by winding a winding on the bobbin in a concentrated winding form. Each coil core has an outer region in opposition to the permanent magnet in a direction of revolution, and a board-shaped coil-winding portion extending from the outer region toward the central core. Each bobbin covers the coil core except for the outer surface of the outer region and a convex portion.
    Type: Grant
    Filed: April 17, 2003
    Date of Patent: January 2, 2007
    Assignee: Denso Corporation
    Inventors: Kiyonori Moroto, Motoya Ito, Eiji Iwanari
  • Patent number: 7148596
    Abstract: A magnetic rotating motor generator of the present invention comprises a rotating portion which is made of a non-magnetic substance whose periphery is provided with a group of permanent magnets tilted at a predetermined angle in an embedded manner; a group of electromagnets that are disposed adjacently to the rotating portion so as to oppose the group of permanent magnets; a positional sensor for detecting positions of the group of permanent magnets; a controller for applying an electric current to the electromagnet on the basis of a detected signal from the positional sensor; and a power generating section for obtaining power from a coil of the electromagnet. A rotation mode and a power generation mode are repeated, so that power generation is performed while a function as a motor is exhibited.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: December 12, 2006
    Inventors: Kohei Minato, Nobue Minato
  • Patent number: 7034423
    Abstract: An electric power steering system for a vehicle includes a steering wheel and a steering shaft that is connected to the steering wheel. A worm gear is connected to the steering shaft. A worm is threadably engaged to the worm gear. A permanent magnet motor is connected to the worm. The permanent magnet motor includes a stator with twelve slots and a rotor with ten poles. The rotor includes one or more axial rotor sections. If more than one axial rotor section is employed, the axial rotor sections are rotationally offset. The axial rotor sections are rotationally offset by an offset angle that is equal to a cogging angle divided by the number of axial rotor sections. The rotor includes breadloaf, spoke, radial or arc permanent magnets.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: April 25, 2006
    Inventors: Alan D. Crapo, Todd A. Walls, Richard E. Hartsfield, Jr.
  • Patent number: 6998756
    Abstract: The present invention provides a rotor shaft, comprising: a rod member (26); and a plurality of separately formed component parts (such as a compressor wheel 10, a turbine wheel 11 and a rotor 14 of an electric generator) through which the rod member extends so that the plurality of component parts are joined together on an axis of the rod member, wherein mutually facing axial end surfaces of adjoining ones of the plurality of component parts are formed with annular projections (22, 23) having a substantially same radial dimension (or thickness) such that an outer circumferential surface of the annular projection of one component part can tightly contact an inner circumferential surface of the annular projection of an adjoining component part.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: February 14, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventor: Ichiro Ishii
  • Patent number: 6979917
    Abstract: A permanent-magnetically excited electric machine comprising a stator part (2) and a moving part (30) movable relative to the stator part (2), as well as an air gap (8) between the stator part (2) and the moving part (30), with one of said stator part (2) and said moving part (30) having a flux path assembly for magnetic flux and winding coils (6) and the other one of said stator part (2) and said moving part (30) having a flux path assembly for magnetic flux and permanent magnets (36), characterized in that there is provided a flux conduction liquid (18) that is conductive for magnetic flux; and that in the region of the flux path assembly of the stator part (2) and/or of the moving part (30), there is provided at least one filling space (12; 16; 20; 38; 46; 48; 50) which, for changing the magnetic flux conductivity of the flux path assembly, may have optionally more or less flux conduction liquid supplied (18) thereto.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: December 27, 2005
    Assignee: Magnet-Motor Gesellschaft fur Magnetmotorische Technik mbH
    Inventor: Peter Ehrhart
  • Patent number: 6975050
    Abstract: A system and method for reducing the cost of producing a brushless DC motor is presented. The brushless DC motor provides higher power density and efficiency with an increased tool run time. The brushless DC motor includes a rotor assembly that has an unmagnetized permanent magnet affixed to a shaft. The permanent magnet remains unmagnetized until the motor is partially assembled. A plurality of coils for producing a magnetic field are wound about the rotor assembly. The coils include end turns that enclose the rotor assembly such that the rotor assembly is not removable. Since the windings are wound with the rotor assembly already enclosed, the windings do not require large end coils to allow subsequent insertion of the rotor. Minimizing the end coils reduces the length of wire required per turn, thereby reducing the resistance of the winding.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: December 13, 2005
    Assignee: Black & Decker Inc.
    Inventors: Aris C. Cleanthous, Bhauprasad V. Gorti, Michael J. Weaver, Christopher R. Yahnker, Richard T. Walter
  • Patent number: 6974522
    Abstract: A method and apparatus for assembling permanent magnet segments and a back ring wherein a fixture holds segments in circumaxially spaced relationship, adhesive is applied to the segments, externally from pressure sensitive adhesive tape and the fixture then expands to urge the segments into firm bonding engagement with the back ring.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: December 13, 2005
    Assignee: Torrington Research Co.
    Inventors: Gary L. Peresada, Carey L. Linkovich, Russel H. Marvin
  • Patent number: 6967418
    Abstract: Two braking magnets are attached to the housing of a motor of a motorized component such as a window covering, with one magnet north face down and the other magnet south face down. With this structure the motor is braked from turning under the weight of the window covering when deenergized, while during operation the average null value of the braking field results in minimal drag on the motor.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: November 22, 2005
    Assignee: Somfy SAS
    Inventors: Pierre-Emmanuel Cavarec, Winston Glenn Walker
  • Patent number: 6954019
    Abstract: Energy is generated by an apparatus and process which utilize magnetic forces to move a rotor in a circular direction to turn a rotor shaft. This apparatus and process convert magnetic energy into mechanical force or electrical energy.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: October 11, 2005
    Assignee: M International, LLC
    Inventor: Harry Paul Sprain
  • Patent number: 6949855
    Abstract: The invention concerns a transverse flux electrical machine operating with alternating current, having a first element having an alternate arrangement of excitation cores and of flux return cores and a winding of electrical conductors, the winding of electrical conductors being wound as a toroid, inside all said excitation cores; a second element having an exciter section comprising two toothed magnetic structures, each toothed magnetic structure comprising a number of slots equal in number to the total number of excitation cores and of flux return cores, the corresponding slots of each magnetic structure being toothed by being aligned; a magnetized sub-assembly is inserted inside each indentation so that an alternating arrangement of magnetic north poles and south poles is produced in each of these magnetic toothed structures of said exciter section; an air gap between the first element and the second element; at least one of the first element and of the second element being capable of rotating around a rota
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: September 27, 2005
    Assignee: Eocycle Technologies Inc.
    Inventors: Maxime Dubois, Henk Polinder, Jan Abraham Ferreira
  • Patent number: 6943476
    Abstract: A magneto generator for self-powered apparatuses; the magneto generator comprises a stator provided with an electric winding, and a permanent magnet rotor coaxially arranged to the stator. The stator and the rotor have a first, and respectively a second pole system which together with the electric winding define a multiphase electromagnetic system connected to a bridge rectifier, secured to the stator. The poles of the stator and the poles of the rotor have opposite polar surfaces in which the axis of each polar surface of the rotor, is slanted with respect to a reference line parallel to the longitudinal axes of the polar surfaces of the stator.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: September 13, 2005
    Assignee: Ducati Energia S.p.A.
    Inventors: Gianni Regazzi, Manuel Cocchi
  • Patent number: 6924579
    Abstract: A motor/alternator is formed by a single toroidal magnet and flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The motor/alternator geometry minimizes flux leakage. The form of the flux conductor and flux switch terminations allows for a high number of poles and reduces magnetic reluctance.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: August 2, 2005
    Inventor: David Calley
  • Patent number: 6924615
    Abstract: A motor for turning the rod of an object such as a window covering is attached to an elongated ferromagnetic bar. Magnets are closely spaced from the bar, and as the bar rotates to cut the magnetic field lines, pickup coils generate signals that can be used to determine the direction and speed of rotation and also the position of the motor (and, hence, the position of the object being moved). The magnets brake the motor from turning under the weight of the object when the motor is deenergized.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: August 2, 2005
    Assignee: Somfy SAS
    Inventors: Pierre-Emmanuel Cavarec, Winston Glenn Walker
  • Patent number: 6891294
    Abstract: An electric motor for a motor vehicle or other machine. The motor includes a support member with electromagnets (coils) and a moving member with permanent magnets. The coils are divided into groups, each group having several sets of coils, each set having several coil units. Each coil has its own battery or other energy source. A drive circuit controls activation of the coils. At maximum power, all coils sets are energized together. At each lower power level, different groups of coil sets are operated, and a cycling circuit varies which of the groups are energized. In this way, energy drain on the batteries is evenly distributed, maximizing the operating time of the motor before recharging of the batteries is required. In one embodiment, the coils are turned on by SCRs, and transistors turn off the SCRs, providing a novel SCR turnoff circuit ideal for high voltage, low current applications.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: May 10, 2005
    Inventor: Clarence D. Deal
  • Patent number: 6891299
    Abstract: A rotary electric machine including a flux-concentrating rotor with permanent magnets disposed between pole pieces, and a stator with teeth having a free end deprived of pole swellings and a concentrated winding. The pole pieces and the magnets are configured so as to minimize the difference Ld?Lq where Ld is inductance on a forward axis and Lq is inductance on a quadrature axis.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 10, 2005
    Assignee: Moteurs Leroy-Somer
    Inventors: Eric Coupart, Pascal Gauthier, Jacques Saint-Michel, Christophe Gilles, André Eydelie, Laurent Jadeau, Philippe Augier, Jean-Marie Guillot
  • Publication number: 20040189128
    Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.
    Type: Application
    Filed: January 8, 2004
    Publication date: September 30, 2004
    Inventors: Kim Houng Joong, Kazuo Tahara, Kou Ajima, Koki Ueta, Toshiyuki Innami, Noriaki Hino, Taizo Miyazaki, Tomoyuki Hanyu, Kousaku Ohno
  • Publication number: 20040183387
    Abstract: This invention relates to a true permanent electro magnetic motor, with no electrical winding, coils or electrical circuitry of any kind that is attached to any of the permanent magnets in this invention.
    Type: Application
    Filed: March 21, 2003
    Publication date: September 23, 2004
    Inventor: James Alfred Moe
  • Patent number: 6794778
    Abstract: Small permanent magnets are affixed to the protruding portion of a rotor of a motor that is coupled to gears in a gear enclosure. The rod of a window covering is coupled to the gears such that when the motor is energized by a user command signal, the window covering moves. Small braking magnets are also affixed to the receptacle of the gear enclosure, such that when the motor is deenergized, the magnetic coupling between the magnets of the rotor and those of the gear enclosure brakes the rod from turning under the weight of the window covering.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: September 21, 2004
    Assignee: Harmonic Design, Inc.
    Inventors: Winston G. Walker, Dave Schmeling, Rich Scharf
  • Patent number: 6781270
    Abstract: An apparatus for producing magnetically induced movement of a second member in relation to a first member. The apparatus includes a first member having at least one perimeter magnet disposed thereon. The first member and at least one perimeter magnet are pivotable in relation to an axial member central of the first member. A second magnet is disposed central of the at least one perimeter magnet, with the second magnet disposed on a second member that is reciprocatable in relation to the first member as the second magnet is alternately attracted and repelled by magnetic forces of the at least one first magnet, and is also moved by gravitational force. Additional perimeter magnets and axial magnets are disposed in relation to the at least one perimeter magnet and the second magnet to convert motion of the first member into movement of the second member for recreational and energy conversion applications.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: August 24, 2004
    Assignee: Harmonic Drive, Inc.
    Inventor: Johnny D. Long
  • Patent number: 6737781
    Abstract: A rotor for an electric rotary machine having signal generating inductor magnetic poles provided on a periphery thereof comprising a cup-like rotor yoke having a peripheral wall and a bottom wall and an inductor forming member mounted on the peripheral wall of the cup-like yoke and including a ring-like portion fitted onto the peripheral wall of the rotor yoke and having the inductor magnetic poles formed thereon and securely mounted on the rotor yoke by forcing protrusions formed on the peripheral wall of the rotor yoke against the both axial ends of the ring-like portion.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: May 18, 2004
    Assignee: Kokusan Denki Co., Ltd.
    Inventors: Takahiro Osada, Yoshimasa Serizawa
  • Patent number: 6734574
    Abstract: A Buoyancy-Driven System for generating electric power is disclosed. The Buoyancy-Driven System utilizes Archimedes' Principle to drive magnet capsules through a fluid-filled portion of pipe and gravity to return the magnet capsules. As the magnet capsules pass through coil modules, electric power is generated.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: May 11, 2004
    Inventor: Ernest Eun Ho Shin
  • Patent number: 6713921
    Abstract: A permanent magnet structure for use in brushless motors is disclosed. In an exemplary embodiment of the invention, the magnet structure includes a parallelogram shaped body. The body has an outer surface and an inner surface, with the outer surface and the inner surface being arcuate in shape.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: March 30, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Tomy Sebastian, Sunil Keshava Murthy, Buyun Liu, Mark F. Fleer
  • Patent number: 6710492
    Abstract: The motor/generator according to this invention is provided with a first rotor (23), a second rotor (21) and a stator (22) provided with a plurality of stator coils (1-6). The first rotor (23) is provided with magnetic poles by a magnet. The second rotor (21) is provided with magnetic poles by a magnet and a plurality of rotor coils (A-D). The motor/generator functions as a magnetic coupling by creating an equal number of magnetic poles in the first rotor (23) and the second rotor (21). When the first rotor (23) and the second rotor (21) are rotated by supplying a polyphase alternating current to the stator coils (1-6), a part of the rotor coils (A-D) are excited and the number of magnetic poles of the second rotor (21) is varied to allow independent rotation of the first rotor (23) and the second rotor (21).
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: March 23, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Yuusuke Minagawa
  • Publication number: 20040041481
    Abstract: A magnetism driven power machine includes a main body, a rotating rack, rotors, and stators. The main body is cylindrical. The rotating rack can rotate about a central axis of the main body, and has two opposing disks connected to the shaft thereof. Each of the rotors has a bent bar connected to inner sides of the disks at two ends. The rotors have magnets spaced along the bent bars. Each of the stators has C-shaped magnets spaced along one of rods positioned along the outer side of the cylindrical wall. Rotation of the rotating rack can continue with attraction and repulsion of the magnets and corresponding C-shaped magnets, allowing the shaft to pass on rotation to other machinery connected thereto. Adjustment member is provided for adjusting distance between the magnets to adjust power output.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 4, 2004
    Inventor: Jin-Hu Kuo
  • Patent number: 6700269
    Abstract: A yoke housing that receives an armature has a plurality of permanent magnets (primary magnetic poles) secured to an inner peripheral surface of the yoke housing. Furthermore, the yoke housing includes a plurality of groove-like reduced thickness portions for increasing a magnetic resistance. Each reduced thickness portion extends along a center line of a corresponding one of the permanent magnets.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: March 2, 2004
    Assignee: Asmo Co., Ltd.
    Inventors: Katsuhiko Torii, Kengo Yamamura, Hiroaki Yamamoto
  • Publication number: 20040007929
    Abstract: A motor in which an attracting magnet for attraction between a rotor and a stator is used in the present invention. The attracting magnet is formed into a hollow cylindrical shape such as to have two flat surfaces between which a predetermined thickness is defined. The attracting magnet is magnetized so as to have different polarities at the inner and outer circumference sides divided in the radial direction in each of its two flat surfaces, and to be reversed in polarity in an interchanging manner between its two flat surfaces. The attracting magnet is mounted on an inner surface of a rotor case while being opposed to a bearing housing. In this motor using the attracting magnet arrangement, the shaft is not magnetized even though the attracting magnet for attraction of the rotor toward the stator is used.
    Type: Application
    Filed: May 21, 2003
    Publication date: January 15, 2004
    Inventors: Tadayuki Wakita, Nobuyuki Sata, Hisashi Ogino, Shinji Furukawa, Kazuo Kadooka, Hideki Itaya
  • Publication number: 20030234590
    Abstract: The rotor and stator of a motor are separated by an air gap The rotor presents a plurality of magnetic flux windows of a given magnetic polarity to the air gap, and the stator provides a different number of magnetic flux windows of the given magnetic polarity to the air gap. The rotor carries a number of equally-spaced bar-type magnets, each magnet of which presents a magnetic pole of the given polarity, for example, a north pole to the air gap The stator carries a different number of equally-spaced bar-type magnets, each magnet of which presents a north pole on the other side of the air gap The rotor and stator carry a number of magnetic flux shields that are made of a material having a high magnetic permeability, for example, mumetal These flux shields are placed on the rotor and on the stator such that the rotor presents a number of equally-spaced north magnetic flux windows to the air gap, and such that the stator presents a different number of equally-spaced north magnetic flux windows to the air gap.
    Type: Application
    Filed: June 19, 2002
    Publication date: December 25, 2003
    Inventors: Christopher Mark Gitzen, Daniel S. Pendl, Justin O. Storto
  • Patent number: 6664704
    Abstract: A motor/alternator is formed by a single toroidal magnet, which may be a hybrid magnet, having flux conductors which, in combination with flux switches, create an alternating magnetic circuit around a power coil. The motor/alternator minimizes the amount of material experiencing hysteresis by making the flux switches small and reduces eddy currents in the flux conductors by using a material very resistant to eddy currents. The subsequent reduction in core losses allows for very high electronic frequency operation and thus a high power density. The form of the flux conductors allows for a high number of poles in the motor/alternator thus enabling a high electronic frequency at modest rotational speed.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: December 16, 2003
    Inventor: David Gregory Calley
  • Publication number: 20030227228
    Abstract: This patent application presents three methods of detection of Basic Magnetic Radiation (BMR) a nonpollution and high capacity source of energy witch is independent of time and space and a method of converting it into electrical energy, by using electrical means, an assembly made of an electrical generator of counter rotation and an electrical motor of counter rotation
    Type: Application
    Filed: June 11, 2002
    Publication date: December 11, 2003
    Inventor: Traian Cherciu
  • Patent number: 6633100
    Abstract: Disclosed is a permanent magnet motor consisting of a rotor which is a multi polar-magnetized cylindrical permanent magnet such as a neodymium/iron/boron magnet, and a stator having a plurality of stator teeth. Different from conventional but expensive multi-radial orientation of the magnetic anisotropy, the cylindrical permanent magnet has a direction of orientation along a single diameter of the cylinder that is perpendicular to the cylinder axis when a definite relationship is held between the number of the multipolar magnetic poles and the number of the stator teeth. Even when using such a simple and inexpensive cylindrical permanent magnet as the rotor, high performance of the permanent magnet motor can be ensured with regard to a large induced voltage and small torque ripples.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: October 14, 2003
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Koji Sato, Takehisa Minowa, Koji Miyata
  • Publication number: 20030173853
    Abstract: A rotor for permanent magnet synchronous machines with a reduction in the stray flux transmitted through the rotor shaft includes substantially ring-shaped punched sheet metal plates with a central opening for receiving the rotor shaft, and a plurality of recesses arranged in the circumferential direction, wherein at least two permanent magnets can be inserted in each of the recesses. A corresponding intermediate sheet metal segment is arranged or can be arranged in each of the recesses between the permanent magnets. At least one of the recesses is shaped so as to form an air gap between the surface of the intermediate sheet metal segment that is oriented radially inwardly towards the center and an edge of the recess that is oriented radially outwardly from the center, when the permanent magnets are inserted radially towards the outside. The air gap aids in attenuating the stray flux.
    Type: Application
    Filed: October 31, 2002
    Publication date: September 18, 2003
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Axel Knauff, Rolf Vollmer
  • Patent number: 6603232
    Abstract: In the embodiments described in the specification, permanent magnets are retained on a permanent magnet rotor rim by inverted U-shaped retainers and in one embodiment the outer surfaces of the retainers converge inwardly in the radially outward direction and engage corresponding surfaces of adjacent pole pieces which converge inwardly in the radially outward direction. In another embodiment the U-shaped retainers are affixed to the rotor rim by screws accessible through openings in the radially outer wall of the retainers and a further embodiment each retainer has outwardly projecting flanges which are affixed to the rotor rim by screws.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: August 5, 2003
    Assignee: Electric Boat Corporation
    Inventors: Pieter Van Dine, Alberto Franco, Spyro Pappas, Michael Gheorghiu
  • Publication number: 20030102753
    Abstract: Energy is generated by an apparatus and process which utilize magnetic forces to move a rotor in a circular direction to turn a rotor shaft. This apparatus and process convert magnetic energy into mechanical force or electrical energy.
    Type: Application
    Filed: November 6, 2002
    Publication date: June 5, 2003
    Inventor: Harry Paul Sprain
  • Publication number: 20030067235
    Abstract: In this vehicle, the diamagnetic fields principles are applied to obtain a hovering and propulsion effect which makes low cost, friction free and zero pollutant emissions transport media. This is done using a special combination of electromagnetic generators and the natural diamagnetic susceptibility present in all elements. The physical effect of this phenomenon is an air gap between the surface and the vehicle. The height of levitation has a direct relationship with the material used as floor surface; since all materials have different diamagnetic susceptibility factors. Also, the power on the diamagnetic field generator is a key for the levitation and propulsion effect. All these factors make this prototype vehicle an easy maneuverable one, since there are almost no inertial forces present in the system.
    Type: Application
    Filed: October 10, 2001
    Publication date: April 10, 2003
    Inventor: Arturo Acevedo Vazquez