USRE48211E1 - Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing - Google Patents

Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing Download PDF

Info

Publication number
USRE48211E1
USRE48211E1 US15/625,780 US200815625780A USRE48211E US RE48211 E1 USRE48211 E1 US RE48211E1 US 200815625780 A US200815625780 A US 200815625780A US RE48211 E USRE48211 E US RE48211E
Authority
US
United States
Prior art keywords
magnet
machine
axle
electromagnetic coils
sector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US15/625,780
Inventor
Dumitru Bojiuc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clearwater Holdings Ltd
Original Assignee
Clearwater Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clearwater Holdings Ltd filed Critical Clearwater Holdings Ltd
Priority to US15/625,780 priority Critical patent/USRE48211E1/en
Assigned to CLEARWATER HOLDINGS, LTD. reassignment CLEARWATER HOLDINGS, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOJIUC, DUMITRU
Application granted granted Critical
Publication of USRE48211E1 publication Critical patent/USRE48211E1/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K23/00DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02Details
    • H02K21/10Rotating armatures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K41/00Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02Linear motors; Sectional motors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003Couplings; Details of shafts
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2213/00Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12Machines characterised by the modularity of some components

Definitions

  • This invention relates generally to electric motors and generators and more particularly to such an electromagnetic machine with novel structure and operation.
  • Tu et al, US 2004/0135452 discloses a flat rotary electric generator that includes at least one toroidal coil structure for cutting magnetic lines to induce a current and at least one disc-shaped magnetic pole structure oriented parallel to the helical coil structure. If multiple toroidal coil structures and disc-shaped magnetic coil structures are included, the toroidal coil structures and disc-shaped magnetic coil structures are arranged in alternating manner. The toroidal coil structure and disc-shaped magnetic pole structure are not provided with a permeable material. When either the toroidal coil structures or the at least one disc-shaped magnetic pole structure is rotated by an external force, the toroidal coil structure cuts the magnetic lines passing therethrough to generate an induced current.
  • Neal, US 2002/0135263, discloses a plurality of stator arc segments that form a toroidal core for a stator assembly used to make a motor.
  • a plurality of magnetic fields is created when electrical current is conducted through wire wound around poles on the toroidal core.
  • a monolithic body of phase change material substantially encapsulates the conductors and holds the stator arc segments in contact with each other in the toroidal core.
  • Hard disc drives using the motor, and methods of constructing the motor and hard disc drives are also disclosed.
  • Rose, U.S. Pat. No. 6,803,691 discloses an electrical machine that comprises a magnetically permeable ring-shaped core centered on an axis of rotation and having two axially-opposite sides. Coils are wound toroidally about the core and disposed sequentially along the circumferential direction. Each coil includes two side legs extending radially alongside respectively sides of the core. Coil-free spaces exist between adjacent side legs.
  • a bracket has first and second side flanges that are connected by a bridging structure and respectively abut the first and second sides of the coil.
  • Mohler U.S. Pat. No. 6,507,257 discloses a bi-directional latching actuator that is comprised of an output shaft with one or more rotors fixedly mounted thereon.
  • the shaft and rotor are mounted for rotation in a magnetically conductive housing having a cylindrical coil mounted therein and is closed by conductive end caps.
  • the end caps have stator pole pieces mounted thereon.
  • the rotor has at least two oppositely magnetized permanent magnets which are asymmetrically mounted, i.e., they are adjacent at one side and separated by a non-magnetic void on the other side.
  • the stator pole piece has asymmetric flux conductivity and in one embodiment is axially thicker than the remaining portion of the pole piece.
  • An abutment prevents the rotor from swinging to the neutral position (where the rotor magnets are axially aligned with the higher conductivity portion of the pole piece).
  • the rotor is magnetically latched in one of two positions being drawn towards the neutral position.
  • Energization of the coil with an opposite polarity current causes the rotor to rotate towards its opposite latching position whereupon it is magnetically latched in that position.
  • U.S. Pat. No. 5,337,030 discloses a permanent magnet brushless torque actuator that is comprised of an electromagnetic core capable of generating an elongated toroidally shaped magnet flux field when energized.
  • an outer housing Outside the generally cylindrical coil is an outer housing with upper and lower end plates at each end.
  • stator pole pieces Mounted to the end plates and extending towards each other are stator pole pieces separated from its opposing pole piece by an air gap.
  • a permanent magnet rotor is disposed in the air gap and mounted on a shaft which in turn is rotatably mounted in each of the end plates.
  • the permanent magnet rotor comprises at least two permanent magnets, each covering an arcuate portion of the rotor and having opposite polarities.
  • Energization of the coil with current in one direction magnetizes the pole pieces such that each of the two pole pieces attracts one of the magnets of the rotor and repels the other magnet of the rotor resulting in a torque generated by the output shaft. Reversal of the current flow results in a reversal of the torque and rotation of the rotor in the opposite direction.
  • Preferred embodiments are disclosed having multiple cells, i.e. a plurality of stator rotor stator combinations and/or cells in which there are a plurality of pole pieces at each stator pole plane.
  • Kloosterhouse et al U.S. Pat. No. 5,191,255, discloses an electromagnetic motor that includes a rotor having a plurality of magnets mounted along a perimeter of the rotor. Preferably, adjacent magnets have opposite poles facing outward.
  • One or more electromagnets are disposed adjacent to the perimeter of the rotor so that as the rotor rotates, the magnets mounted on the rotor are carried near the poles of the electromagnets.
  • the drive circuit includes a photosensitive device which produces a signal whose value varies according to whether the device is receiving light reflected from the reflective material. The signal is amplified to produce drive current for the electromagnets.
  • U.S. Pat. No. 4,565,938 discloses an electromechanical device which can be used as a motor or as a generator.
  • the device has a housing, including bearing means to support a rotatable shaft.
  • Disc magnet means are provided, and poled to have alternating polarity and are mounted on the shaft to define a rotor.
  • the device includes at least one first pole shoe in contact with the magnet means, having a portion extending radially therefrom to define a virtual pole chamber, of a first polarity.
  • at least one second pole shoe in contact with the magnet and having a portion extending radially therefrom to define a virtual pole chamber of the other polarity.
  • a toroid stator is mounted on the housing and has windings thereon.
  • the stator is positioned annularly around the disc magnets such that the virtual pole chambers of the first and second pole shoes surround portions of said windings with circumferentially alternating fields of alternating polarity.
  • Means are provided for electrical contact with the stator to draw off current when the device is operated as a generator, or provide current to operate the device as a motor.
  • U.S. Pat. No. 4,459,501 discloses an electromechanical device which can be used as a motor or as a generator that has a housing, including bearing means to support a rotatable shaft.
  • a pair of disc magnets are poled to have opposite polarity on the two faces of each.
  • the magnets are mounted face to face together on the shaft to define a rotor.
  • the device includes at least one first pole shoe in contact with one face of each magnet, and having a portion extending radially therefrom to define, in its preferred form, a pair of virtual pole chambers, of the same polarity as said one face.
  • At least one second pole shoe in contact with the other face of each magnet and having a portion extending radially therefrom to define in its preferred form a pair of virtual pole chambers of the same polarity as the other face.
  • a toroid stator is mounted on the housing and has windings thereon. The stator is positioned annularly around the disc magnets such that the virtual pole chambers of the first and second pole shoes surround portions of said windings with circumferentially alternating fields of alternating polarity.
  • Means for electrical contact with the stator draw off current when the device is operated as a generator, or provide current to operate the device as a motor.
  • the present invention teaches certain benefits in construction and use which give rise to the objectives described below.
  • the present invention functions as an electric motor, in a second embodiment it functions as a rotating electric generator, and in a third embodiment it functions as a rotating transformer.
  • the present invention may operate as a linear machine rather than rotating.
  • the machine may be operated as an AC machine or a DC machine.
  • the machine operates by coupling a moving electromagnetic field to magnets in attraction and also in repulsion.
  • primary electromagnets produce a field which couples to secondary magnets, which may be permanent magnets or electromagnets, with either the primary or the secondary magnets functioning as part of a stator structure of the machine, i.e., neither rotating nor translating.
  • An important aspect of the present invention in one structural embodiment, pertinent to the embodiments previously defined, is a novel electromagnetic coil structure wound or formed as spiral turns of a single flat strip of an either ferromagnetic or non-ferromagnetic material.
  • a further important aspect of the present invention is the modularity of the entire construction by use of coil special shape housings of ferromagnetic material which is separated into a plurality of segments magnetically isolated from each other but in mutual electrical continuity and hence minimizing hysteresis effects.
  • Another important aspect of the present invention is the incorporated self sustained passive magnetic bearing as a result of the permanent magnets sweeping a portion of the aluminum shaft ring beneath the permanent magnets and located between the guiding ball bearing and the electromagnets ferromagnetic core.
  • Another important aspect of the present invention is the permanent magnets edges cut in a distinct angle, such as at 45 degrees, or triangular in shape which allows a continuous magnetic one pole face and avoids the alternating magnetic end effect at both ends of the permanent magnet.
  • Another important aspect of the present invention is the useful capture of induced eddy currents of each ferromagnetic segment and sent back in the electrical circuit of the power supply.
  • a primary objective of the present invention is to provide an apparatus and method of use of such apparatus that yields advantages not taught by the prior art.
  • Another objective of the invention is to produce a machine as described herein having a high electromagnetic field density.
  • a further objective of the invention is the elimination of the need for a commutator.
  • a further objective of the invention is the establishment of low losses including losses derived from hysteresis, heat, radiation and eddy currents, which reduce the efficiency of typical machines of the present type.
  • a further objective of the invention is to produce a rotating machine with a compact, modular structure.
  • a further objective of the invention is to provide a rotating machine with open access to the interior of its central shaft on its axis of rotation.
  • a further objective of the invention is to provide rotating and translating machines with self sustained passive magnetic bearings as part of their integrated construction.
  • FIG. 1 is a schematic diagram of the present invention shown in cross-section
  • FIG. 2 is a side view of a rotational tubular axle of the present invention shown with bearing sets 20 , bearing securing fitting 15 , mounting rings 30 A, coil interconnection ring 30 C, magnetic bearing aluminum ring sweep surface 10 ′, and commutator 80 ;
  • FIG. 3 is a perspective view of a circuit common ring 30 B
  • FIG. 4 is a perspective end view thereof as seen with the bearing securing fitting detached;
  • FIG. 5 is an end view thereof as seen from the bearing securing fitting and showing proximal ends of connecting bars;
  • FIG. 6 is a perspective end view thereof as seen from the commutator
  • FIG. 7 is a perspective view of one of the connecting bars
  • FIG. 8 is a perspective view thereof showing the two half coil housings mounted on the mounting rings as seen from the bearing securing fitting end;
  • FIG. 9 is a close up partial side perspective view thereof showing the mounting interface between a coil housing and the mounting rings;
  • FIG. 10 is a partial side perspective view thereof showing a coil as mounted within a coil housing
  • FIG. 11 is a perspective view thereof of a coil either wire or tape as wound onto a coil form on a magnetic or non-magnetic material core like steel or aluminum, and a coil housing showing coil form mounting surfaces;
  • FIG. 12 is a side view of the coil housing thereof with coil and coil form in place;
  • FIGS. 13 and 14 are perspective views thereof showing a commutator housing positioned over the commutator;
  • FIGS. 15 and 16 are perspective views of system housing plates thereof
  • FIG. 17 is a partial side perspective view of the presently described apparatus showing physical relationships between coil housings, peripheral angle cut magnets adjacent to the ferromagnetic core's shape and the system housing plates;
  • FIGS. 18-20 are conceptual diagrams of an advanced electromagnet coil thereof.
  • FIG. 1 is a schematic diagram of the present invention shown in cross-section which shows some of the major constructional features of this machine.
  • FIG. 1 shows the machine's tubular axle 10 , bearing sets 20 , mounting rings 30 A, coil housings 40 , coil housing bolts 42 , peripheral magnets 50 , sector magnets 60 , system housing plates 70 and peripheral plates 72 .
  • FIG. 2 is a side view of the rotational tubular axle 10 , and its magnetic bearing aluminum swept surface 10 ′, showing bearing sets 20 , bearing securing fitting 15 , commutator 80 , mounting rings 30 A and coil input ring 30 C.
  • system housing plates 70 is are mounted on bearing sets 20 through adaptors 74 . Either the system housing plates 70 or axle 10 may act as stator with the other member rotating.
  • FIG. 3 is a perspective view of coil common ring 30 B which is constructed in two pieces and is independently removable from axle 10 , whereas mounting rings 30 A are an integral part of axle 10 .
  • FIG. 4 is a perspective end view of axle 10 with the securing fitting 15 detached.
  • FIG. 6 is a perspective end view thereof as seen from the commutator end of the machine, showing distal ends 94 of connecting bars 90 .
  • FIG. 7 is a perspective view of one of the connecting bars 90 , as detached, showing the proximal 92 and distal 94 ends.
  • a lateral rod 96 joined to bar 90 at the distal end 94 commutes between bar 90 and one segment 82 of commutator 80 and is secured by screws 84 as shown in FIG. 6 .
  • the distal end 94 is joined with lateral plate 98 which is covered with an insulator wrap 99 and secured to coil input ring 30 C through slots 12 in axle 10 , as shown in FIG. 2 , using tab 32 and screw 34 .
  • Screw 36 is available for securing coil wires as will be described presently.
  • Bars 90 including rods 96 , plates 98 and tabs 32 form the necessary electrical path between electromagnet coils of the machine (to be described), and the commutator 80 .
  • coils 110 are wired in parallel with current introduced from the commutator 80 through lateral rods 96 , bars 90 , plate 98 to insulated segments (tabs 32 ) mounted on input ring 30 C.
  • One end of each of the coils 110 are attached to each of tabs 32 respectively, at screws 36 .
  • the other end of each of the coils 110 are attached to the screws on common ring 30 B which acts as a ground back to the commutator 80 .
  • FIG. 8 shows two coil housings 100 mounted on the rings 30 A by coil housing bolts 42 ( FIG. 1 ) fastened into threaded holes.
  • FIG. 9 is a close up showing the novel mounting interface between coil housings 100 and the mounting rings 30 A. In this mounting it is noticed that the interfacing surfaces of the coil housings 100 abut rings 30 A and are close to rings 30 B and 30 C.
  • FIG. 10 shows part of the coil housing 100 removed revealing a portion of a coil 110 as mounted within the coil housing 100 .
  • FIG. 11 shows the coil 110 detached from the coil housing 100 and shows, too, coilform 120 upon which coil 110 is wound.
  • coil 110 is wound with common insulated wire 112 , however, coil 110 may also be wound with metal strip wherein such strip would have a thickness approximately equal to the diameter of wire 112 and a width W equal to the width of coil 110 , or of the ferromagnetic housing cell's width as shown in FIG. 11 . It is noticed that coil 110 has an axis 114 of the windings that is positioned tangential to the direction of rotation of the electromagnetic field of this machine when the coil is mounted within the coil housing 120 100. This may be best seen in FIG.
  • coil 110 is shown mounted within coil housing 120 100, and housing 120 100 is shown in its mounted position on ring 30 A Only two coil housings 120 100 are shown in the figures, but in the completely assembled machine, the coil housings 120 100 form a full circle around tubular axle 110 10.
  • FIGS. 13 and 14 show a commutator housing 85 positioned over the commutator 80 .
  • Housing 85 provides the wipers that frictionally contact the blades of commutator 80 .
  • FIGS. 15 and 16 are views of the system housing plates 70 which are shown in their assembled positions in FIG. 1 . Plates 70 are engaged with the outer bearing races of bearing sets 20 through adaptors 74 shown in schematic representation in FIG. 1 .
  • FIG. 17 shows the finished machine as a side view with two peripheral plates 72 , commonly known as “biscuits,” removed, to show the locations of peripheral magnets 50 and coil housings 100 . The axis 5 of rotation of the rotating magnetic field is depicted in FIG. 17 .
  • FIGS. 18-20 show an alternative embodiment of coil 110 .
  • Previously coil 110 was described as constructed by windings of common insulated electrical conductor wire 112 as is well known in the art, and alternatively using flexible insulated conductive metal strip stock.
  • coil 110 may also be advantageously constructed from a solid block of conductive metal.
  • FIG. 18 is shown a schematic diagram of such a coil 110 wherein the lines 110 A represent conductive paths and the spaces between the lines represent material that is cut away from the solid block of conductive metal. This may be accomplished using electrical discharge machining, also known by the acronym EDM.
  • EDM electrical discharge machining
  • EDM is used to cut into the solid block of electrically conductive material such as copper, aluminum or steel, but most preferably, iron, and the cuts are directed as shown in FIG. 18 .
  • the solid block has been reduced to a single continuous coil where the coil's windings are strips having the desired width W ( FIG. 19 ), i.e., the width of the original solid block.
  • FIG. 19 shows the cut block in perspective with plus (+) and minus ( ⁇ ) electrodes attached for connecting the coil 110 into a circuit of the present machine.
  • FIG. 20 shows the same cut block as FIG. 19 , but partially cut-away to better illustrate the layers of the windings.
  • no space is shown separating the windings, however, these figures are conceptual diagrams where the spaces between adjacent windings are considerably less wide than the windings themselves, and the spaces may be filled with an electrical insulator using an electro-chemical process such as electroplating.
  • the coil housing 100 may also be advantageously constructed in the same manner as the coil shown in FIGS.
  • the housing 100 may be sectioned using EDM to establish a coil-like configuration while maintaining the housing in the form shown in FIGS. 8-12 .
  • the establishment of coil 110 and coil housing 100 in the above manner provide significant advantages including low eddy current loss, less resistance to AC and to DC current flow, and smaller size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Dc Machiner (AREA)
  • Windings For Motors And Generators (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

A rotating electromagnetic machine has a tubular axle with mounting rings, a common ring, a coil input ring, and at least one bearing set mounted on it. A fitting is secured at a distal end of the tubular axle, and a commutator is secured at the proximal end. A housing is mounted on the bearing sets through adaptors. Connecting bars extend axially within the axle with lateral rods joined to the connecting bars at their distal ends, the bars commuting between segments of the commutator electromagnetic coils. A plurality of the electromagnetic coils are secured to the coil input ring. The coils are formed of spiral turns of a single flat strip electrically conductive material. A plurality of peripheral and sector magnets are mounted adjacent to the electromagnetic coils with electromagnetic interaction when relative motion occurs between the coils and the magnets.

Description

Notice: More than one reissue application has been filed for the reissue of U.S. Pat. No. 8,232,695. This is a continuation reissue of application Ser. No. 14/447,523, filed on Jul. 30, 2014, which is an application for reissue of U.S. Pat. No. 8,232,695, issued on Jul. 31, 2012. Application Ser. No. 14/447,523 issued as RE46,449 on Jun. 20, 2017. U.S. Pat. No. 8,232,695 granted from application Ser. No. 12/308,630, filed on Jul. 21, 2010, which is a National Stage of International Application No. PCT/US2008/008434, filed Jul. 9, 2008, each of which is hereby incorporated by reference herein in its entirety.
FIELD OF THE INVENTION
This invention relates generally to electric motors and generators and more particularly to such an electromagnetic machine with novel structure and operation.
DESCRIPTION OF THE RELATED ART
Tu et al, US 2004/0135452, discloses a flat rotary electric generator that includes at least one toroidal coil structure for cutting magnetic lines to induce a current and at least one disc-shaped magnetic pole structure oriented parallel to the helical coil structure. If multiple toroidal coil structures and disc-shaped magnetic coil structures are included, the toroidal coil structures and disc-shaped magnetic coil structures are arranged in alternating manner. The toroidal coil structure and disc-shaped magnetic pole structure are not provided with a permeable material. When either the toroidal coil structures or the at least one disc-shaped magnetic pole structure is rotated by an external force, the toroidal coil structure cuts the magnetic lines passing therethrough to generate an induced current.
Neal, US 2002/0135263, discloses a plurality of stator arc segments that form a toroidal core for a stator assembly used to make a motor. In a preferred embodiment, a plurality of magnetic fields is created when electrical current is conducted through wire wound around poles on the toroidal core. A monolithic body of phase change material substantially encapsulates the conductors and holds the stator arc segments in contact with each other in the toroidal core. Hard disc drives using the motor, and methods of constructing the motor and hard disc drives are also disclosed.
Rose, U.S. Pat. No. 6,803,691, discloses an electrical machine that comprises a magnetically permeable ring-shaped core centered on an axis of rotation and having two axially-opposite sides. Coils are wound toroidally about the core and disposed sequentially along the circumferential direction. Each coil includes two side legs extending radially alongside respectively sides of the core. Coil-free spaces exist between adjacent side legs. A bracket has first and second side flanges that are connected by a bridging structure and respectively abut the first and second sides of the coil.
Mohler, U.S. Pat. No. 6,507,257, discloses a bi-directional latching actuator that is comprised of an output shaft with one or more rotors fixedly mounted thereon. The shaft and rotor are mounted for rotation in a magnetically conductive housing having a cylindrical coil mounted therein and is closed by conductive end caps. The end caps have stator pole pieces mounted thereon. In one embodiment, the rotor has at least two oppositely magnetized permanent magnets which are asymmetrically mounted, i.e., they are adjacent at one side and separated by a non-magnetic void on the other side. The stator pole piece has asymmetric flux conductivity and in one embodiment is axially thicker than the remaining portion of the pole piece. An abutment prevents the rotor from swinging to the neutral position (where the rotor magnets are axially aligned with the higher conductivity portion of the pole piece). Thus, the rotor is magnetically latched in one of two positions being drawn towards the neutral position. Energization of the coil with an opposite polarity current causes the rotor to rotate towards its opposite latching position whereupon it is magnetically latched in that position.
Mohler, U.S. Pat. No. 5,337,030, discloses a permanent magnet brushless torque actuator that is comprised of an electromagnetic core capable of generating an elongated toroidally shaped magnet flux field when energized. Outside the generally cylindrical coil is an outer housing with upper and lower end plates at each end. Mounted to the end plates and extending towards each other are stator pole pieces separated from its opposing pole piece by an air gap. A permanent magnet rotor is disposed in the air gap and mounted on a shaft which in turn is rotatably mounted in each of the end plates. The permanent magnet rotor comprises at least two permanent magnets, each covering an arcuate portion of the rotor and having opposite polarities. Energization of the coil with current in one direction magnetizes the pole pieces such that each of the two pole pieces attracts one of the magnets of the rotor and repels the other magnet of the rotor resulting in a torque generated by the output shaft. Reversal of the current flow results in a reversal of the torque and rotation of the rotor in the opposite direction. Preferred embodiments are disclosed having multiple cells, i.e. a plurality of stator rotor stator combinations and/or cells in which there are a plurality of pole pieces at each stator pole plane.
Kloosterhouse et al, U.S. Pat. No. 5,191,255, discloses an electromagnetic motor that includes a rotor having a plurality of magnets mounted along a perimeter of the rotor. Preferably, adjacent magnets have opposite poles facing outward. One or more electromagnets are disposed adjacent to the perimeter of the rotor so that as the rotor rotates, the magnets mounted on the rotor are carried near the poles of the electromagnets. Current is supplied to the electromagnets by a drive circuit in a predetermined phase relationship with the rotation of the rotor such that, for substantially all angular positions of the rotor, magnetic attraction and repulsion between the poles of the electromagnets and the magnets mounted on the rotor urge the rotor to rotate in a desired direction. Reflective material is mounted on the rotor in predetermined angular positions. The drive circuit includes a photosensitive device which produces a signal whose value varies according to whether the device is receiving light reflected from the reflective material. The signal is amplified to produce drive current for the electromagnets.
Westley, U.S. Pat. No. 4,623,809, discloses a stepper motor housing a pole structure in which a pair of identical stator plates, each having a plurality of poles, are positioned back to back with the poles projecting in opposite directions, the stator plates being positioned between a pair of substantially identical stator cups, each stator cup having a plurality of poles projecting inwardly from a back wall with a peripheral side wall terminating in an outwardly extending flange. A major surface of each flange is in contact with a face on one of the stator plates so as to assure a low reluctance magnetic path.
Fawzy, U.S. Pat. No. 4,565,938, discloses an electromechanical device which can be used as a motor or as a generator. The device has a housing, including bearing means to support a rotatable shaft. Disc magnet means are provided, and poled to have alternating polarity and are mounted on the shaft to define a rotor. The device includes at least one first pole shoe in contact with the magnet means, having a portion extending radially therefrom to define a virtual pole chamber, of a first polarity. Also included is at least one second pole shoe in contact with the magnet and having a portion extending radially therefrom to define a virtual pole chamber of the other polarity. A toroid stator is mounted on the housing and has windings thereon. The stator is positioned annularly around the disc magnets such that the virtual pole chambers of the first and second pole shoes surround portions of said windings with circumferentially alternating fields of alternating polarity. Means are provided for electrical contact with the stator to draw off current when the device is operated as a generator, or provide current to operate the device as a motor.
Fawzy, U.S. Pat. No. 4,459,501, discloses an electromechanical device which can be used as a motor or as a generator that has a housing, including bearing means to support a rotatable shaft. A pair of disc magnets are poled to have opposite polarity on the two faces of each. The magnets are mounted face to face together on the shaft to define a rotor. The device includes at least one first pole shoe in contact with one face of each magnet, and having a portion extending radially therefrom to define, in its preferred form, a pair of virtual pole chambers, of the same polarity as said one face. Also included is at least one second pole shoe in contact with the other face of each magnet and having a portion extending radially therefrom to define in its preferred form a pair of virtual pole chambers of the same polarity as the other face. A toroid stator is mounted on the housing and has windings thereon. The stator is positioned annularly around the disc magnets such that the virtual pole chambers of the first and second pole shoes surround portions of said windings with circumferentially alternating fields of alternating polarity. Means for electrical contact with the stator draw off current when the device is operated as a generator, or provide current to operate the device as a motor.
SUMMARY OF THE INVENTION
The present invention teaches certain benefits in construction and use which give rise to the objectives described below. In one embodiment, the present invention functions as an electric motor, in a second embodiment it functions as a rotating electric generator, and in a third embodiment it functions as a rotating transformer. In further embodiments, the present invention may operate as a linear machine rather than rotating. In each of these embodiments, the machine may be operated as an AC machine or a DC machine. The machine operates by coupling a moving electromagnetic field to magnets in attraction and also in repulsion. In each embodiment, primary electromagnets produce a field which couples to secondary magnets, which may be permanent magnets or electromagnets, with either the primary or the secondary magnets functioning as part of a stator structure of the machine, i.e., neither rotating nor translating. An important aspect of the present invention, in one structural embodiment, pertinent to the embodiments previously defined, is a novel electromagnetic coil structure wound or formed as spiral turns of a single flat strip of an either ferromagnetic or non-ferromagnetic material. A further important aspect of the present invention is the modularity of the entire construction by use of coil special shape housings of ferromagnetic material which is separated into a plurality of segments magnetically isolated from each other but in mutual electrical continuity and hence minimizing hysteresis effects. Another important aspect of the present invention is the incorporated self sustained passive magnetic bearing as a result of the permanent magnets sweeping a portion of the aluminum shaft ring beneath the permanent magnets and located between the guiding ball bearing and the electromagnets ferromagnetic core. Another important aspect of the present invention is the permanent magnets edges cut in a distinct angle, such as at 45 degrees, or triangular in shape which allows a continuous magnetic one pole face and avoids the alternating magnetic end effect at both ends of the permanent magnet. Another important aspect of the present invention is the useful capture of induced eddy currents of each ferromagnetic segment and sent back in the electrical circuit of the power supply.
A primary objective of the present invention is to provide an apparatus and method of use of such apparatus that yields advantages not taught by the prior art.
Another objective of the invention is to produce a machine as described herein having a high electromagnetic field density.
A further objective of the invention is the elimination of the need for a commutator.
A further objective of the invention is the establishment of low losses including losses derived from hysteresis, heat, radiation and eddy currents, which reduce the efficiency of typical machines of the present type.
A further objective of the invention is to produce a rotating machine with a compact, modular structure.
A further objective of the invention is to provide a rotating machine with open access to the interior of its central shaft on its axis of rotation.
A further objective of the invention is to provide rotating and translating machines with self sustained passive magnetic bearings as part of their integrated construction.
Other features and advantages of the embodiments of the present invention will become apparent from the following more detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of at least one of the possible embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings illustrate the embodiments of the present invention. In such drawings:
FIG. 1 is a schematic diagram of the present invention shown in cross-section;
FIG. 2 is a side view of a rotational tubular axle of the present invention shown with bearing sets 20, bearing securing fitting 15, mounting rings 30A, coil interconnection ring 30C, magnetic bearing aluminum ring sweep surface 10′, and commutator 80;
FIG. 3 is a perspective view of a circuit common ring 30B;
FIG. 4 is a perspective end view thereof as seen with the bearing securing fitting detached;
FIG. 5 is an end view thereof as seen from the bearing securing fitting and showing proximal ends of connecting bars;
FIG. 6 is a perspective end view thereof as seen from the commutator;
FIG. 7 is a perspective view of one of the connecting bars;
FIG. 8 is a perspective view thereof showing the two half coil housings mounted on the mounting rings as seen from the bearing securing fitting end;
FIG. 9 is a close up partial side perspective view thereof showing the mounting interface between a coil housing and the mounting rings;
FIG. 10 is a partial side perspective view thereof showing a coil as mounted within a coil housing;
FIG. 11 is a perspective view thereof of a coil either wire or tape as wound onto a coil form on a magnetic or non-magnetic material core like steel or aluminum, and a coil housing showing coil form mounting surfaces;
FIG. 12 is a side view of the coil housing thereof with coil and coil form in place;
FIGS. 13 and 14 are perspective views thereof showing a commutator housing positioned over the commutator;
FIGS. 15 and 16 are perspective views of system housing plates thereof;
FIG. 17 is a partial side perspective view of the presently described apparatus showing physical relationships between coil housings, peripheral angle cut magnets adjacent to the ferromagnetic core's shape and the system housing plates; and
FIGS. 18-20 are conceptual diagrams of an advanced electromagnet coil thereof.
DETAILED DESCRIPTION OF THE INVENTION
The above described drawing figures illustrate the present invention in at least one of its preferred embodiments, which is further defined in detail in the following description. Those having ordinary skill in the art may be able to make alterations and modifications in the present invention without departing from its spirit and scope. Therefore, it must be understood that the illustrated embodiments have been set forth only for the purposes of example and that they should not be taken as limiting the invention as defined in the following.
The present invention is a rotating electromagnetic machine which may be used in several ways as described above as is familiar to those of skill in the art. The physical construction especially that of the electromagnetic coils and the coil housings, the manner of interconnecting the coils to the commutator and most of the structural configurations of this machine are novel. FIG. 1 is a schematic diagram of the present invention shown in cross-section which shows some of the major constructional features of this machine. FIG. 1 shows the machine's tubular axle 10, bearing sets 20, mounting rings 30A, coil housings 40, coil housing bolts 42, peripheral magnets 50, sector magnets 60, system housing plates 70 and peripheral plates 72. These components will be described in detail in the following referring to the attached pictorials where numerals shown thereon are found in this text.
FIG. 2 is a side view of the rotational tubular axle 10, and its magnetic bearing aluminum swept surface 10′, showing bearing sets 20, bearing securing fitting 15, commutator 80, mounting rings 30A and coil input ring 30C. In FIG. 1 it is seen that system housing plates 70 is are mounted on bearing sets 20 through adaptors 74. Either the system housing plates 70 or axle 10 may act as stator with the other member rotating. FIG. 3 is a perspective view of coil common ring 30B which is constructed in two pieces and is independently removable from axle 10, whereas mounting rings 30A are an integral part of axle 10. FIG. 4 is a perspective end view of axle 10 with the securing fitting 15 detached.
What is not depicted in FIG. 1, but is shown in FIG. 5; an end view from the securing fitting side, is proximal ends 92 of connecting bars 90 which extend axially within axle 10 as will be further shown. FIG. 6 is a perspective end view thereof as seen from the commutator end of the machine, showing distal ends 94 of connecting bars 90. FIG. 7 is a perspective view of one of the connecting bars 90, as detached, showing the proximal 92 and distal 94 ends. A lateral rod 96 joined to bar 90 at the distal end 94, commutes between bar 90 and one segment 82 of commutator 80 and is secured by screws 84 as shown in FIG. 6. The distal end 94 is joined with lateral plate 98 which is covered with an insulator wrap 99 and secured to coil input ring 30C through slots 12 in axle 10, as shown in FIG. 2, using tab 32 and screw 34. Screw 36 is available for securing coil wires as will be described presently. Bars 90, including rods 96, plates 98 and tabs 32 form the necessary electrical path between electromagnet coils of the machine (to be described), and the commutator 80. In the preferred embodiment, coils 110 are wired in parallel with current introduced from the commutator 80 through lateral rods 96, bars 90, plate 98 to insulated segments (tabs 32) mounted on input ring 30C. One end of each of the coils 110 are attached to each of tabs 32 respectively, at screws 36. The other end of each of the coils 110 are attached to the screws on common ring 30B which acts as a ground back to the commutator 80.
FIG. 8 shows two coil housings 100 mounted on the rings 30A by coil housing bolts 42 (FIG. 1) fastened into threaded holes. FIG. 9 is a close up showing the novel mounting interface between coil housings 100 and the mounting rings 30A. In this mounting it is noticed that the interfacing surfaces of the coil housings 100 abut rings 30A and are close to rings 30B and 30C. FIG. 10 shows part of the coil housing 100 removed revealing a portion of a coil 110 as mounted within the coil housing 100. FIG. 11 shows the coil 110 detached from the coil housing 100 and shows, too, coilform 120 upon which coil 110 is wound. In this embodiment coil 110 is wound with common insulated wire 112, however, coil 110 may also be wound with metal strip wherein such strip would have a thickness approximately equal to the diameter of wire 112 and a width W equal to the width of coil 110, or of the ferromagnetic housing cell's width as shown in FIG. 11. It is noticed that coil 110 has an axis 114 of the windings that is positioned tangential to the direction of rotation of the electromagnetic field of this machine when the coil is mounted within the coil housing 120 100. This may be best seen in FIG. 12 where coil 110 is shown mounted within coil housing 120 100, and housing 120 100 is shown in its mounted position on ring 30A Only two coil housings 120 100 are shown in the figures, but in the completely assembled machine, the coil housings 120 100 form a full circle around tubular axle 110 10.
FIGS. 13 and 14 show a commutator housing 85 positioned over the commutator 80. Housing 85 provides the wipers that frictionally contact the blades of commutator 80. FIGS. 15 and 16 are views of the system housing plates 70 which are shown in their assembled positions in FIG. 1. Plates 70 are engaged with the outer bearing races of bearing sets 20 through adaptors 74 shown in schematic representation in FIG. 1. FIG. 17 shows the finished machine as a side view with two peripheral plates 72, commonly known as “biscuits,” removed, to show the locations of peripheral magnets 50 and coil housings 100. The axis 5 of rotation of the rotating magnetic field is depicted in FIG. 17.
FIGS. 18-20 show an alternative embodiment of coil 110. Previously coil 110 was described as constructed by windings of common insulated electrical conductor wire 112 as is well known in the art, and alternatively using flexible insulated conductive metal strip stock. However, it has been discovered that coil 110 may also be advantageously constructed from a solid block of conductive metal. In FIG. 18 is shown a schematic diagram of such a coil 110 wherein the lines 110A represent conductive paths and the spaces between the lines represent material that is cut away from the solid block of conductive metal. This may be accomplished using electrical discharge machining, also known by the acronym EDM. In this process EDM is used to cut into the solid block of electrically conductive material such as copper, aluminum or steel, but most preferably, iron, and the cuts are directed as shown in FIG. 18. When the cutting is complete, the solid block has been reduced to a single continuous coil where the coil's windings are strips having the desired width W (FIG. 19), i.e., the width of the original solid block.
FIG. 19 shows the cut block in perspective with plus (+) and minus (−) electrodes attached for connecting the coil 110 into a circuit of the present machine. FIG. 20 shows the same cut block as FIG. 19, but partially cut-away to better illustrate the layers of the windings. In FIGS. 19 and 20 no space is shown separating the windings, however, these figures are conceptual diagrams where the spaces between adjacent windings are considerably less wide than the windings themselves, and the spaces may be filled with an electrical insulator using an electro-chemical process such as electroplating. The coil housing 100 may also be advantageously constructed in the same manner as the coil shown in FIGS. 18-20, that is, the housing 100 may be sectioned using EDM to establish a coil-like configuration while maintaining the housing in the form shown in FIGS. 8-12. The establishment of coil 110 and coil housing 100 in the above manner provide significant advantages including low eddy current loss, less resistance to AC and to DC current flow, and smaller size.
The enablements described in detail above are considered novel over the prior art of record and are considered critical to the operation of at least one aspect of one best mode embodiment of the instant invention and to the achievement of the above described objectives. The words used in this specification to describe the instant embodiments are to be understood not only in the sense of their commonly defined meanings, but to include by special definition in this specification: structure, material or acts beyond the scope of the commonly defined meanings. Thus if an element can be understood in the context of this specification as including more than one meaning, then its use must be understood as being generic to all possible meanings supported by the specification and by the word or words describing the element.
The definitions of the words or elements of the embodiments of the herein described invention and its related embodiments not described are, therefore, defined in this specification to include not only the combination of elements which are literally set forth, but all equivalent structure, material or acts for performing substantially the same function in substantially the same way to obtain substantially the same result. In this sense it is therefore contemplated that an equivalent substitution of two or more elements may be made for any one of the elements in the invention and its various embodiments or that a single element may be substituted for two or more elements.
Changes from the described subject matter as viewed by a person with ordinary skill in the art, now known or later devised, are expressly contemplated as being equivalents within the scope of the invention and its various embodiments. Therefore, obvious substitutions now or later known to one with ordinary skill in the art are defined to be within the scope of the defined elements. The invention and its various embodiments are thus to be understood to include what is specifically illustrated and described above, what is conceptually equivalent, what can be obviously substituted, and also what essentially incorporates the essential idea of the invention.
While the invention has been described with reference to at least one preferred embodiment, it is to be clearly understood by those skilled in the art that the invention is not limited thereto.

Claims (37)

What is claimed is:
1. A rotating electromagnetic machine comprising:
a tubular axle defining a distal and a proximal ends thereof, and mounted medially thereon, a pair of mounting rings, a common ring, a coil input ring, and at least one bearing set; a fitting is secured at the distal end of the tubular axle, and a commutator is secured at the proximal end of the tubular axle;
a housing mounted on the bearing sets through adaptors; the common ring constructed in two pieces and independently removable from axle,
connecting bars extending axially within axle; lateral rods joined to connecting bars at distal end thereof, the lateral rods commuting between bars and segments of commutator with distal ends joined with lateral plates;
a plurality of electromagnetic coils secured to the mounting rings, the coils formed of spiral turns of a single flat strip electrically conductive material; and
a plurality of peripheral and sector magnets mounted adjacent to the electromagnetic coils.
2. The rotating electromagnetic machine of claim 1 assembled with a modular construction with coil housings of a ferromagnetic material separated into a plurality of magnetically isolated segments in mutual electrical continuity, whereby hysteresis is minimized.
3. The rotating electromagnetic machine of claim 1 wherein each of the peripheral and sector magnets has edges cut in a shape that enables a continuous magnetic pole face and avoids an alternating magnetic end effect at opposing ends of the magnet, whereby, induced eddy currents of the ferromagnetic segments are returned to the electrical circuit thereof.
4. A rotating electromagnetic machine comprising:
an axle;
a plurality of coil housings spaced about and coupled to the axle, each of the plurality of coil housings including ferromagnetic material;
a plurality of electromagnetic coils, each of the plurality of electromagnetic coils being disposed in a respective one of the plurality of coil housings; and
a plurality of magnet sets, each of the plurality of magnet sets being disposed adjacent to a respective one of the plurality of electromagnetic coils, each of the plurality of magnet sets having a first sector magnet, a second sector magnet, and a peripheral magnet, each sector magnet of each of the plurality of magnet sets having a front surface facing toward the respective one of the plurality of electromagnetic coils, the peripheral magnet of each of the plurality of magnet sets having (i) a front surface facing toward the respective one of the plurality of electromagnetic coils and perpendicular to the front surface of each sector magnet, (ii) first and second end surfaces, each end surface facing parallel to and opposed to the front surface of one of the sector magnets, and (iii) first and second angled surfaces, each angled surface positioned between and at an angle relative to the front surface and one of the opposing end surfaces, the first sector magnet and the second sector magnet being disposed in mutually opposing and facing positions, the peripheral magnet being positioned orthogonal to both the first sector magnet and the second sector magnet,
wherein each of the plurality of coil housings is disposed between a respective one of the plurality of electromagnetic coils and a respective one of the plurality of magnet sets, and
wherein a first wedge-shaped portion of each of the plurality of coil housings extends between (i) the front surface of the first sector magnet of the respective one of the plurality of magnet sets, and (ii) the first angled surface of the peripheral magnet, and
wherein a second wedge-shaped portion of each of the plurality of coil housings extends between (i) the front surface of the second sector magnet of the respective one of the plurality of magnet sets, and (ii) the first angled surface of the peripheral magnet.
5. The machine of claim 4, wherein the angle at which the first and second angled surfaces of each peripheral magnet are positioned is about 45 degrees.
6. The machine of claim 4, wherein each of the plurality of electromagnetic coils is formed of spiral turns of a single flat strip of electrically conductive material.
7. The machine of claim 4, wherein the plurality of coil housings is configured to capture eddy currents induced therein and to return the captured eddy currents to a power supply of the rotating electromagnetic machine.
8. The machine of claim 4, wherein each of the plurality of electromagnetic coils has a respective winding axis.
9. The machine of claim 8, wherein the respective winding axis of each of the plurality of electromagnetic coils is perpendicular to a central axis of the axle.
10. The machine of claim 8, wherein the respective winding axis of each of the plurality of electromagnetic coils is spaced apart from a central axis of the axle.
11. The machine of claim 4, further comprising:
at least one bearing set rotationally disposed about the axle, and;
a magnet housing having each of the plurality of magnet sets mounted therein, the magnet housing coupled to the at least one bearing set to allow relative rotation between the magnet housing and the axle.
12. The machine of claim 11, wherein the magnet housing acts as a stator of the rotating electromagnetic machine.
13. The machine of claim 4, wherein the axle acts as a stator of the rotating electromagnetic machine.
14. The machine of claim 4, wherein the plurality of electromagnetic coils are coupled together in an electrically parallel configuration.
15. The machine of claim 4, wherein the first sector magnet, the second sector magnet, and the peripheral magnet of each of the plurality of magnet sets are permanent magnets.
16. The machine of claim 4, wherein each of the plurality of coil housings is separated into a plurality of magnetically isolated segments in mutual electrical continuity, whereby hysteresis is minimized.
17. The machine of claim 4, further comprising a fitting being attached to a distal end of the axle and a commutator being attached to a proximal end of the axle.
18. The machine of claim 4, wherein each of the plurality of electromagnetic coils is mounted on a pair of mounting rings mounted to the axle.
19. The machine of claim 18, further comprising:
the pair of mounting rings;
a common ring mounted to the axle; and
a coil input ring mounted to the axle.
20. The machine of claim 19, wherein the common ring is constructed in two pieces, each of the two pieces of the common ring being independently removable from the axle.
21. The machine of claim 18, further comprising a commutator attached to a first end of the axle, the commutator being electrically coupled to each of the plurality of electromagnetic coils.
22. The machine of claim 21, further comprising:
a plurality of connecting bars extending generally axially within the axle, each of the plurality of connecting bars aiding in electrically coupling one of the plurality of electromagnetic coils to the commutator; and
a plurality of lateral rods extending in a radial direction, a first end of each of the plurality of lateral rods being coupled to a first end of a respective one of the plurality of connecting bars.
23. The machine of claim 22, wherein a second end of each of the plurality of lateral rods is coupled to the commutator and wherein a second end of each of the plurality of connecting bars is coupled to the coil input ring.
24. The machine of claim 23, wherein a first end of each of the plurality of electromagnetic coils is coupled to the coil input ring to thereby electrically couple each of the plurality of electromagnetic coils to the commutator.
25. The machine of claim 24, wherein a second end of each of the plurality of electromagnetic coils is coupled to the common ring to electrically ground each of the plurality of electromagnetic coils.
26. The machine of claim 4, wherein each respective coil housing is disposed between a respective one of the plurality of electromagnetic coils and a respective one of the plurality of magnet sets.
27. A rotating electromagnetic machine comprising:
an axle;
a plurality of electromagnetic coils, each of the plurality of electromagnetic coils being mounted on separate coil housings of ferromagnetic material, each of the coil housings being mounted on the axle, each of the plurality of electromagnetic coils having a winding axis tangential to a direction of rotation of the machine;
a plurality of sets of peripheral and sector magnets, the plurality of magnet sets positioned adjacent to the coils, each of the plurality of magnet sets having two of the sector magnets in mutually opposing and facing positions and at least one of the peripheral magnets positioned orthogonal to the sector magnets, each sector magnet of each of the plurality of magnet sets having a front surface facing toward the respective one of the plurality of electromagnetic coils, each peripheral magnet of each of the plurality of magnet sets having (i) a front surface facing toward the respective one of the plurality of electromagnetic coils and perpendicular to the front surface of each sector magnet, (ii) first and second end surfaces, each end surface facing parallel to and opposed to the front surface of one of the sector magnets, and (iii) first and second angled surfaces, each angled surface positioned between and at an angle relative to the front surface and one of the opposing end surfaces, and wherein the plurality of electromagnetic coils and the plurality of magnet sets are engaged for relative rotation between the electromagnetic coils and the magnet sets,
wherein each of the plurality of coil housings is disposed between a respective one of the plurality of electromagnetic coils and a respective one of the plurality of magnet sets, and
wherein a first wedge-shaped portion of each of the plurality of coil housings extends between (i) the front surface of the first sector magnet of the respective one of the plurality of magnet sets, and (ii) the first angled surface of the peripheral magnet, and
wherein a second wedge-shaped portion of each of the plurality of coil housings extends between (i) the front surface of the second sector magnet of the respective one of the plurality of magnet sets, and (ii) the first angled surface of the peripheral magnet.
28. The machine of claim 27, wherein the angle at which the first and second angled surfaces of each peripheral magnet are positioned is about 45 degrees.
29. The machine of claim 27, wherein the plurality of coil housings is configured to capture eddy currents induced therein and to return the captured eddy currents to a power supply of the rotating electromagnetic machine.
30. The machine of claim 27, wherein each of the plurality of electromagnetic coils has a respective winding axis.
31. The machine of claim 30, wherein the respective winding axis of each of the plurality of electromagnetic coils is perpendicular to a central axis of the axle.
32. The machine of claim 30, wherein the respective winding axis of each of the plurality of electromagnetic coils is spaced apart from a central axis of the axle.
33. The machine of claim 27, further comprising:
at least one bearing set rotationally disposed about the axle, and;
a magnet housing having each of the plurality of magnet sets mounted therein, the magnet housing coupled to the at least one bearing set to allow relative rotation between the magnet housing and the axle.
34. The machine of claim 33, wherein the magnet housing acts as a stator of the rotating electromagnetic machine.
35. The machine of claim 27, wherein the axle acts as a stator of the rotating electromagnetic machine.
36. The machine of claim 27, wherein the plurality of electromagnetic coils is coupled together in an electrically parallel configuration.
37. The machine of claim 27, wherein the first sector magnet, the second sector magnet, and the peripheral magnet of each the plurality of magnet sets are permanent magnets.
US15/625,780 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing Active 2029-01-22 USRE48211E1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/625,780 USRE48211E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US95877207P 2007-07-09 2007-07-09
PCT/US2008/008434 WO2009009075A1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US12/308,630 US8232695B2 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US15/625,780 USRE48211E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing
US201414447523A 2014-10-30 2014-10-30

Publications (1)

Publication Number Publication Date
USRE48211E1 true USRE48211E1 (en) 2020-09-15

Family

ID=40228927

Family Applications (4)

Application Number Title Priority Date Filing Date
US15/625,780 Active 2029-01-22 USRE48211E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing
US14/447,523 Active 2029-01-22 USRE46449E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US12/308,630 Ceased US8232695B2 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US16/983,847 Active 2029-01-22 USRE49413E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing

Family Applications After (3)

Application Number Title Priority Date Filing Date
US14/447,523 Active 2029-01-22 USRE46449E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US12/308,630 Ceased US8232695B2 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US16/983,847 Active 2029-01-22 USRE49413E1 (en) 2007-07-09 2008-07-09 Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing

Country Status (10)

Country Link
US (4) USRE48211E1 (en)
EP (1) EP2168225A4 (en)
JP (3) JP2010541519A (en)
KR (1) KR101531728B1 (en)
CN (1) CN101842965B (en)
BR (1) BRPI0813185B1 (en)
EA (1) EA017646B1 (en)
MX (1) MX2010000366A (en)
TW (1) TWI446689B (en)
WO (1) WO2009009075A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE49413E1 (en) * 2007-07-09 2023-02-07 Clearwater Holdings, Ltd. Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10230292B2 (en) 2008-09-26 2019-03-12 Clearwater Holdings, Ltd Permanent magnet operating machine
KR102048601B1 (en) * 2012-03-20 2019-11-25 리니어 랩스, 엘엘씨 An improved dc electric motor/generator with enhanced permanent magnet flux densities
US9729016B1 (en) 2012-03-20 2017-08-08 Linear Labs, Inc. Multi-tunnel electric motor/generator
US10263480B2 (en) 2012-03-20 2019-04-16 Linear Labs, LLC Brushless electric motor/generator
US10284029B2 (en) 2012-03-20 2019-05-07 Linear Labs, LLC Brushed electric motor/generator
US10505412B2 (en) 2013-01-24 2019-12-10 Clearwater Holdings, Ltd. Flux machine
US20140354106A1 (en) * 2013-06-03 2014-12-04 Hamilton Sundstrand Corporation Reduction of leakage flux in electrical machines
CN103393436B (en) * 2013-07-31 2015-09-16 深圳先进技术研究院 The fan-shaped pendulous device of machinery
EP3195452A4 (en) 2014-07-23 2018-01-17 Clearwater Holdings, Ltd. Flux machine
US10447103B2 (en) 2015-06-28 2019-10-15 Linear Labs, LLC Multi-tunnel electric motor/generator
US10476362B2 (en) 2015-06-28 2019-11-12 Linear Labs, LLC Multi-tunnel electric motor/generator segment
JP6893306B2 (en) 2015-10-20 2021-06-23 リニア ラブズ リミテッド ライアビリティ カンパニー Circumferential magnetic flux electromechanical machine equipped with a magnetic field weakening mechanism and how to use it
CA3034629A1 (en) 2016-09-05 2018-03-08 Linear Labs, LLC An improved multi-tunnel electric motor/generator
WO2019050772A1 (en) 2017-09-08 2019-03-14 Clearwater Holdings, Ltd. Systems and methods for enhancing electric storage
MX2020007205A (en) * 2017-10-29 2023-03-23 Clearwater Holdings Ltd Modular electromagnetic machines and methods of use and manufacture thereof.
KR102506864B1 (en) 2017-12-12 2023-03-08 현대자동차주식회사 Apparatus for varying a transparency of window glass using wireless power transfer
US11277062B2 (en) 2019-08-19 2022-03-15 Linear Labs, Inc. System and method for an electric motor/generator with a multi-layer stator/rotor assembly

Citations (161)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435267A (en) 1965-01-21 1969-03-25 Lloyd Dynamowerke Gmbh Discoidal electrical machines
JPS4934082B1 (en) 1969-08-05 1974-09-11
US4185366A (en) 1973-12-06 1980-01-29 Wickman Machine Tool Sales Ltd. Spindle drives for multi spindle lathes
JPS55160964A (en) 1979-06-01 1980-12-15 Kenkichi Tsukamoto Dc motor
US4286198A (en) 1978-05-11 1981-08-25 Valbrev S.A.R.L. Direct current motor unit without commutator
US4370577A (en) 1980-07-22 1983-01-25 Matsushita Electric Industrial Co., Ltd. Linear motor
DE3142913A1 (en) 1981-10-29 1983-05-11 Herbert Prof. Dr.-Ing. 3300 Braunschweig Weh Electrical machine having an annular winding armature and permanently excited rotors
US4441043A (en) 1980-11-24 1984-04-03 Decesare Dominic Compound interaction/induction electric rotating machine
US4458228A (en) * 1980-10-29 1984-07-03 Pierburg Gmbh & Co. Kg. Rotary positioning apparatus and associated methods, such as for a carburetor choke valve
US4542323A (en) 1978-05-22 1985-09-17 Papst Motoren Gmbh & Co Kg Direct current motor without commutator
US4563602A (en) 1985-01-09 1986-01-07 Kabushiki Kaisha Yasawa Denki Seisakusho Permanent magnet type stepping motor
US4568862A (en) 1983-04-15 1986-02-04 Mavilor Systemes, S.A. Commutatorless d.c. motor with electronic commutation
US4626751A (en) 1978-05-22 1986-12-02 Papst-Motoren Gmbh & Co Kg Direct-current motor without commutator
US4802690A (en) 1986-11-12 1989-02-07 Raidel John E Suspension assembly for steer axle with single air spring mounted directly over the axle
US4806832A (en) 1982-11-23 1989-02-21 Papst Motoren Kg Fan with temperature controlled rotation speed
US4924156A (en) 1987-05-27 1990-05-08 Papst-Motoren Gmbh & Co. Kg Driver circuit for a D.C. motor without commutator
US4973869A (en) 1988-07-29 1990-11-27 Samsung Electro-Mechanics Co., Ltd. Brushless coreless DC motor
WO1991007805A1 (en) 1989-11-14 1991-05-30 The United States Of America, Secretary Of The Army, The Pentagon Permanent magnet structure for use in electric machinery
JPH0366553U (en) 1989-10-31 1991-06-27
US5051641A (en) 1987-02-13 1991-09-24 J. M. Voith Gmbh Transversal flow machine in accumulator arrangement
US5117142A (en) 1989-11-20 1992-05-26 501 Ibk Ab Permanent magnetized synchronous machine designed according to the transverse flux principle
US5128570A (en) 1991-06-24 1992-07-07 Japan Servo Co., Ltd. Permanent magnet type stepping motor
US5130583A (en) 1989-11-13 1992-07-14 Ricoh Company, Ltd. Linear motor
US5142181A (en) 1990-07-09 1992-08-25 Newell Stanley E Direct current dynamo
JPH04359656A (en) 1990-07-31 1992-12-11 Sony Corp Rotor yoke
WO1993015547A1 (en) 1992-01-29 1993-08-05 Stridsberg Innovation Ab Brushless dc motors/generators
JPH065380A (en) 1992-06-18 1994-01-14 Achilles Corp Manufacture of electrostatic charge removing device
US5289072A (en) 1990-11-23 1994-02-22 J. M. Voith Gmbh Electrical machine
US5474799A (en) 1992-10-13 1995-12-12 Reliance Electric Industrial Company Apparatus and method for coating an electromagnetic coil
US5543674A (en) 1990-07-02 1996-08-06 Radio Energie Dynamoelectric machine composed of sectors having transverse fluxes
US5625241A (en) * 1994-07-28 1997-04-29 Energy Research Corporation Carousel electric generator
US5708310A (en) 1995-07-24 1998-01-13 Japan Servo Co., Ltd. Permanent magnet type stepping motor
US5777418A (en) 1995-06-23 1998-07-07 Voith Turbo Gmbh Transverse flux motor with magnetic floor gap
US5838079A (en) 1996-05-28 1998-11-17 Mitsubishi Denki Kabushiki Kaisha Synchronous linear motor using permanent magnet
US5894902A (en) 1996-09-05 1999-04-20 The United States Of America As Represented By The Secretary Of The Navy Self-propelled wheel for wheeled vehicles
RU2131637C1 (en) 1998-02-04 1999-06-10 Караваев Виктор Терентьевич Electric machine
US5942828A (en) 1995-12-16 1999-08-24 Hill; Wolfgang Transverse flux machine
US5952743A (en) 1995-08-29 1999-09-14 Sidey; Roger Charles Hey Electric motor
US5973436A (en) 1996-08-08 1999-10-26 Rolls-Royce Power Engineering Plc Electrical machine
US5977684A (en) * 1998-06-12 1999-11-02 Lin; Ted T. Rotating machine configurable as true DC generator or motor
US6011339A (en) * 1996-01-18 2000-01-04 Shibaura Engineering Works Co., Ltd. Motor mounted in a vehicle
US6043579A (en) 1996-07-03 2000-03-28 Hill; Wolfgang Permanently excited transverse flux machine
WO2000054396A1 (en) 1999-03-05 2000-09-14 Helmut Schiller Electric dc generator
US6222287B1 (en) 1998-11-06 2001-04-24 Canon Kabushiki Kaisha Motor
JP2001211623A (en) 2000-12-21 2001-08-03 Nitto Zoki Kk Flat motor
DE10037787A1 (en) 2000-08-03 2002-03-14 Landert Motoren Ag Permanent magnet excited synchronous machine e.g. general purpose drive motors, has external rotor design with external rotor joined rotationally-rigidly to rotatable shaft, around common axis
US6414408B1 (en) 1992-04-06 2002-07-02 General Electric Company Integral motor and control
US20020130655A1 (en) 2001-03-13 2002-09-19 Ntn Corporation Wheel support bearing assembly
US6492758B1 (en) 2000-02-25 2002-12-10 Fisher & Paykel Limited Polyphase transverse flux motor
US20030011455A1 (en) 2001-07-16 2003-01-16 Hitachi, Ltd. Magnet, a method of adjustment of magnetic field and a magnetic resonance imaging apparatus
US20030025417A1 (en) 2001-08-06 2003-02-06 Mitchell Rose Ring-shaped motor core with toroidally-wound coils
US20030102770A1 (en) 2001-07-31 2003-06-05 Laskaris Evangelos Trifon High temperature superconductor synchronous rotor coil support insulator
US20030127917A1 (en) 2001-12-26 2003-07-10 Kang Do Hyun Transverse flux linear motor with permanent magnet excitation
WO2003065554A1 (en) 2002-01-25 2003-08-07 California Linear Devices, Inc. Bearing surface layer for magnetic motor
WO2003094328A1 (en) 2002-04-30 2003-11-13 Wavecrest Laboratories Llc Rotary electric motor having both radial and axial air gap flux paths between stator and rotor segments
US20030230946A1 (en) 2000-07-19 2003-12-18 Durham Gary L. Flux diode motor
US6700267B2 (en) 2001-03-01 2004-03-02 Deere & Company Transverse flux drive
US6710581B1 (en) 1998-02-11 2004-03-23 I.S. Motor Korea Co., Ltd. Constant-power brushless DC motor
JP2004129339A (en) 2002-09-30 2004-04-22 Mitsubishi Electric Corp Dc motor and manufacturing method thereof
US6729140B2 (en) 2001-02-09 2004-05-04 Rolls-Royce Plc Electrical machine
US6741010B2 (en) 2000-01-19 2004-05-25 Rolls Royce Plc Rotor disc assembly having rotor rim with alternate magnets and laminated pole pieces
US20040155548A1 (en) 2001-05-08 2004-08-12 Rasmussen Peter Omand Transverse flux machine with stator made of e-shaped laminates
US6798089B1 (en) 2001-07-05 2004-09-28 Anorad Corporation Forcer and associated three phase linear motor system
US20040239199A1 (en) 2003-05-30 2004-12-02 Wisconsin Alumni Research Foundation Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine
US20040251759A1 (en) 2003-06-12 2004-12-16 Hirzel Andrew D. Radial airgap, transverse flux motor
US6847135B2 (en) 2000-12-13 2005-01-25 Robert Bosch Gmbh Unipolar transverse flux machine
US6870284B2 (en) 2001-02-23 2005-03-22 Canon Kabushiki Kaisha Linear motor and stage apparatus, exposure apparatus, and device manufacturing method using the same
US6888272B2 (en) 2001-08-16 2005-05-03 Robert Bosch Gmbh Unipolar transverse magnetic flux machine
US20050104456A1 (en) 2003-11-13 2005-05-19 Smc Corporation Electromagnetic actuator
US20050179336A1 (en) 2003-11-17 2005-08-18 Masahiro Hasebe Axial gap electric rotary machine
US6952068B2 (en) 2000-12-18 2005-10-04 Otis Elevator Company Fabricated components of transverse flux electric motors
JP2005287103A (en) 2004-03-26 2005-10-13 Ceremo:Kk Power generator
US20060022544A1 (en) 2004-07-30 2006-02-02 Ichinomiya Denki Co., Ltd. Stator and brushless motor
US20060038456A1 (en) 2004-08-20 2006-02-23 Dumitru Bojiuc Monopole field electric motor generator
US20060043821A1 (en) 2004-08-25 2006-03-02 Fujitsu General Limited Axial air-gap electronic motor
US7030529B2 (en) 2002-04-06 2006-04-18 Robert Bosch Gmbh Electrical machines, especially engines excited by permanent magnets
US7067942B2 (en) 2003-02-13 2006-06-27 Canon Kabushiki Kaisha Linear motor, moving stage system, exposure apparatus, and device manufacturing method
US20060192453A1 (en) 2003-05-27 2006-08-31 Gieras Jacek F Modular transverse flux motor with integrated brake
JP2006280066A (en) 2005-03-29 2006-10-12 Toyota Motor Corp Stator and rotary electric machine
WO2006117210A1 (en) 2005-05-04 2006-11-09 Bosch Rexroth Ag Phase module for a transverse flux motor
WO2007000054A1 (en) 2005-06-29 2007-01-04 Eocycle Technologies Inc. Transverse flux electrical machine with segmented core stator
US7164220B2 (en) 2002-12-07 2007-01-16 Rolls-Royce Plc Stator pole structure for an electrical machine
US20070216249A1 (en) 2006-03-16 2007-09-20 Mtu Aero Engines Gmbh Transverse flux machine and turbine-type machine having such a transverse flux machine
US20070228860A1 (en) * 2006-03-31 2007-10-04 Rao Dantam K Three-gapped motor with outer rotor and stationary shaft
US20070247017A1 (en) 2004-05-29 2007-10-25 University Of Durham Axial-Flux, Permanent Magnet Electrical Machine
US20070267929A1 (en) 2006-05-16 2007-11-22 Minebea Co., Ltd. Stator arrangement and rotor arrangement for a transverse flux machine
US20080048505A1 (en) 2003-12-09 2008-02-28 Toshiba Kikai Kabushiki Kaisha Coreless Linear Motor
US20080122311A1 (en) 2006-06-13 2008-05-29 The Board Of Regents, The University Of Texas System Rotor assembly and method of assembling a rotor of a high speed electric machine
US20080136272A1 (en) 2006-12-07 2008-06-12 Toshio Ishikawa Rotating electrical machine
US20080211326A1 (en) 2006-12-28 2008-09-04 Korea Electro Technology Research Institute Inner rotor type permanent magnet excited transverse flux motor
US20080246362A1 (en) 2003-06-12 2008-10-09 Hirzel Andrew D Radial airgap, transverse flux machine
US20080278020A1 (en) 2007-05-11 2008-11-13 Uqm Technologies, Inc. Stator for permanent magnet electric motor using soft magnetic composites
WO2009009075A1 (en) 2007-07-09 2009-01-15 Clearwater Holdings, Ltd. Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US20090026869A1 (en) 2007-07-24 2009-01-29 Christian Kaehler Transverse flux reluctance machine and method for manufacturing same
US7492074B1 (en) 2007-03-30 2009-02-17 Norman Rittenhouse High-efficiency wheel-motor utilizing molded magnetic flux channels with transverse-flux stator
US20090102305A1 (en) 2005-06-29 2009-04-23 Union Plastic (Hangzhou) Machinery Co., Ltd. Brushless electric machine
US20090108712A1 (en) 2007-07-27 2009-04-30 Holtzapple Mark T Short-flux path motors / generators
TW200919903A (en) 2007-08-11 2009-05-01 Clearwater Holdings Ltd Electrical commutator with segmented brushes
WO2009070333A1 (en) 2007-11-30 2009-06-04 Rittenhouse Norman P Wind turbine generator
US7579742B1 (en) 2008-01-17 2009-08-25 Norman Rittenhouse High-efficiency parallel-pole molded-magnetic flux channels transverse wound motor-dynamo
US20090243413A1 (en) 2007-06-27 2009-10-01 Brooks Automation, Inc. Robot drive with magnetic spindle bearings
US7633198B2 (en) * 2005-03-16 2009-12-15 Robert Ernest Kirkman 50 DN alternator stator terminal insulator apparatus
US7652406B2 (en) 2002-06-26 2010-01-26 Amotech Co., Ltd. Apparatus for driving drum of washing machine
US7701678B2 (en) 2006-05-26 2010-04-20 Pratt & Whitney Canada Corp. Electric motor control
US20100101879A1 (en) 2007-02-14 2010-04-29 Mcvickers Jack C Motor Battery Systems
US7777381B2 (en) 2002-11-18 2010-08-17 Seiko Epson Corporation Magnetic structure and motor employing said magnetic structure, and driver comprising said motor
US7791245B1 (en) 2009-03-24 2010-09-07 Gm Global Technology Operations, Inc. Optimized electric machine for smart actuators
US7812500B1 (en) 2008-11-12 2010-10-12 Demetrius Calvin Ham Generator / electric motor
US20100327787A1 (en) 2008-02-22 2010-12-30 Kabushiki Kaisha Toshiba Permanent-magnet-type rotating electrical machine
US7884563B2 (en) 2004-03-12 2011-02-08 Seiko Epson Corporation Motor and drive control system thereof
US20110058967A1 (en) 2008-05-14 2011-03-10 Mitsubishi Electric Corporation Magnetic inductor rotary machine and fluid transfer apparatus that uses the same
US20110109190A1 (en) 2009-11-09 2011-05-12 Yasuaki Aoyama Rotary electrical machine
US7944112B2 (en) 2006-04-06 2011-05-17 Amotech Co., Ltd. Method of making integrated stator, brushless direct-current motor of radial core type double rotor structure using the integrated stator, and method of making the same
US7944107B2 (en) 2006-12-29 2011-05-17 Michael Thoms Synchronous permanent magnet machine
US7986069B2 (en) 2007-10-02 2011-07-26 Seiko Epson Corporation Brushless electric machine
US7990019B2 (en) 2008-02-05 2011-08-02 Sam Kyung Sung Flat motor having a dual air gap
US20110234033A1 (en) 2010-03-23 2011-09-29 Calnetix, Inc. Combination radial/axial electromagnetic actuator with an improved axial frequency response
US8053946B2 (en) 2006-07-27 2011-11-08 Sumitomo Heavy Industries, Ltd. Coreless and brushless direct-current motor, Gifford McMahon (GM) cryogenic cooler, pulse tube cryogenic cooler, cryopump, magnetic resonance imaging (MRI) apparatus, superconducting magnet (SCM) apparatus, nuclear magnetic resonance (NMR) apparatus, and cryogenic cooler for cooling semiconductor
US8058763B2 (en) 2006-05-27 2011-11-15 Converteam Uk Ltd Rotor having an inverted U-shaped retainer and magnet carrier
US8074922B2 (en) 2005-08-22 2011-12-13 Dumitru Bojiuc Discoidal flying craft
US8084879B2 (en) 2007-11-26 2011-12-27 Siemens Aktiengesellschaft Wind turbine
US8089175B2 (en) 2007-11-26 2012-01-03 Siemens Aktiengesellschaft Direct drive generator and wind turbine
US8106563B2 (en) 2006-06-08 2012-01-31 Exro Technologies Inc. Polyphasic multi-coil electric device
US8110961B2 (en) 2007-11-20 2012-02-07 Ut-Battelle, Llc Permanent-magnet-less machine having an enclosed air gap
US8115361B2 (en) 2008-01-31 2012-02-14 Honda Motor Co., Ltd. Coil assembly for electrical rotating machine, stator for electrical rotating machine, and electrical rotating machine
US8154146B2 (en) 2009-01-14 2012-04-10 Amsc Windtec Gmbh Generator, nacelle, and mounting method of a nacelle of a wind energy converter
US8159104B1 (en) 2005-08-22 2012-04-17 Clearwater Holdings, Ltd DC induction electric motor-generator with magnetic gap self commutating laminated ferromagnetic rotating core
US8169109B2 (en) 2009-03-13 2012-05-01 Nidec Sr Drives Ltd. Electrical machine with dual radial airgaps
US8188633B2 (en) 2009-01-05 2012-05-29 Eric Stephane Quere Integrated composite electromechanical machines
US8207644B2 (en) 2009-07-14 2012-06-26 Hamilton Sundstrand Corporation Hybrid cascading lubrication and cooling system
US8207648B2 (en) 2008-10-15 2012-06-26 Panasonic Corporation Dual rotor having varying air gaps
US8212445B2 (en) 2004-08-12 2012-07-03 Exro Technologies Inc. Polyphasic multi-coil electric device
US8258782B2 (en) 2008-07-30 2012-09-04 Tdk Corporation Angle detecting apparatus and angle detecting method
US8264120B2 (en) 2007-11-20 2012-09-11 Ut-Battelle, Llc Permanent-magnet-less synchronous reluctance system
US20120228977A1 (en) 2011-03-09 2012-09-13 Nova Torque, Inc. Rotor-stator structures with an outer rotor for electrodynamic machines
US8274191B2 (en) 2008-09-15 2012-09-25 Siemens Akteingesellschaft Stator arrangement, generator and wind turbine
US8278872B2 (en) 2009-04-16 2012-10-02 Shenzhen Futaihong Precision Industry Co., Ltd. Charging device
US8288916B2 (en) 2007-09-13 2012-10-16 Eric Stephane Quere Composite electromechanical machines with uniform magnets
US8294322B2 (en) 2008-03-28 2012-10-23 Toyota Jidosha Kabushiki Kaisha Rotating electrical machine
US8299676B2 (en) 2007-09-14 2012-10-30 Shin-Etsu Chemical Co., Ltd. Axial gap type coreless rotating machine
US20120299430A1 (en) 2009-12-22 2012-11-29 Hoganas Ab (Publ) Rotor for modulated pole machine
US20120299405A1 (en) 2011-05-26 2012-11-29 Yue Li Electric motor
US20120306212A1 (en) 2009-12-30 2012-12-06 Sarmiento Munoz Gustavo Direct-action superconducting synchronous generator for a wind turbine
US8334634B2 (en) 2006-07-26 2012-12-18 Millennial Research Corporation High power rotary device
US8339009B2 (en) 2007-09-12 2012-12-25 Ngentec Ltd. Magnetic flux conducting unit
US8344567B2 (en) 2010-03-16 2013-01-01 Kabushiki Kaisha Yaskawa Denki Rotating electrical machine
US8350442B2 (en) 2008-07-22 2013-01-08 Honda Motor Co., Ltd. Power plant
US8354768B2 (en) 2008-01-21 2013-01-15 Avio S.P.A. Modular electromagnetic device with reversible generator-motor operation
US8358046B2 (en) 2007-12-28 2013-01-22 Platon Mihai C Hybrid electric power system with distributed segmented generator/motor
US8373319B1 (en) 2009-09-25 2013-02-12 Jerry Barnes Method and apparatus for a pancake-type motor/generator
US8381389B2 (en) 2008-09-03 2013-02-26 Renzo Lisi Method for assembling the rotor of an electric machine
US8390168B2 (en) 2008-11-20 2013-03-05 Ut-Battelle, Llc Permanent-magnet-less machine having an enclosed air gap
US8432081B2 (en) 2009-11-10 2013-04-30 Yuanchang Wang Direct rotation-inducing generator
US8436507B2 (en) 2010-05-06 2013-05-07 Industrial Technology Research Institute Adjustable axial-flux disc motor
US8482171B2 (en) 2009-01-05 2013-07-09 Rolls-Royce Plc Magnetic gear arrangement
US8536758B2 (en) 2008-09-03 2013-09-17 Renzo Lisi Electric rotary machine
US8546988B2 (en) 2008-08-08 2013-10-01 Rolls-Royce Plc Magnetic gear arrangement
US20130270955A1 (en) 2010-10-08 2013-10-17 Global Motors Invent Pty Ltd Electromagnetic machine
US20140191612A1 (en) 2013-01-09 2014-07-10 Eurocopter Electric machine with multiple air gaps and a 3d magnetic flux
TW201444231A (en) 2013-01-24 2014-11-16 Clearwater Holdings Ltd Flux machine
WO2016014717A1 (en) 2014-07-23 2016-01-28 Clearwater Holdings, Ltd Flux machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934082A (en) 1972-07-31 1974-03-29
US4185365A (en) * 1978-09-08 1980-01-29 General Electric Company Method of making stationary anode x-ray tube with brazed anode assembly
EP0439337B1 (en) 1990-01-25 1995-04-05 Yoshiyuki Naito Broad-band wave absorber
CN1070653C (en) * 1996-04-18 2001-09-05 赫尔穆特·席勒 DC electric machine
JP3983509B2 (en) * 2000-08-01 2007-09-26 Ntn株式会社 Wheel bearing device
WO2004062069A1 (en) * 2003-01-02 2004-07-22 Joseph Ronald Segal Electric motor
JP4292050B2 (en) * 2003-10-27 2009-07-08 本田技研工業株式会社 Rotating electric machine stator

Patent Citations (182)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435267A (en) 1965-01-21 1969-03-25 Lloyd Dynamowerke Gmbh Discoidal electrical machines
JPS4934082B1 (en) 1969-08-05 1974-09-11
US4185366A (en) 1973-12-06 1980-01-29 Wickman Machine Tool Sales Ltd. Spindle drives for multi spindle lathes
US4286198A (en) 1978-05-11 1981-08-25 Valbrev S.A.R.L. Direct current motor unit without commutator
US4542323A (en) 1978-05-22 1985-09-17 Papst Motoren Gmbh & Co Kg Direct current motor without commutator
US4626751A (en) 1978-05-22 1986-12-02 Papst-Motoren Gmbh & Co Kg Direct-current motor without commutator
JPS55160964A (en) 1979-06-01 1980-12-15 Kenkichi Tsukamoto Dc motor
US4370577A (en) 1980-07-22 1983-01-25 Matsushita Electric Industrial Co., Ltd. Linear motor
US4458228A (en) * 1980-10-29 1984-07-03 Pierburg Gmbh & Co. Kg. Rotary positioning apparatus and associated methods, such as for a carburetor choke valve
US4441043A (en) 1980-11-24 1984-04-03 Decesare Dominic Compound interaction/induction electric rotating machine
DE3142913A1 (en) 1981-10-29 1983-05-11 Herbert Prof. Dr.-Ing. 3300 Braunschweig Weh Electrical machine having an annular winding armature and permanently excited rotors
US4806832A (en) 1982-11-23 1989-02-21 Papst Motoren Kg Fan with temperature controlled rotation speed
US4568862A (en) 1983-04-15 1986-02-04 Mavilor Systemes, S.A. Commutatorless d.c. motor with electronic commutation
US4563602A (en) 1985-01-09 1986-01-07 Kabushiki Kaisha Yasawa Denki Seisakusho Permanent magnet type stepping motor
US4802690A (en) 1986-11-12 1989-02-07 Raidel John E Suspension assembly for steer axle with single air spring mounted directly over the axle
US5051641A (en) 1987-02-13 1991-09-24 J. M. Voith Gmbh Transversal flow machine in accumulator arrangement
US4924156A (en) 1987-05-27 1990-05-08 Papst-Motoren Gmbh & Co. Kg Driver circuit for a D.C. motor without commutator
US5134682A (en) 1987-05-27 1992-07-28 Papst-Motoren Gmbh & Co. Kg Driver circuit for a d.c. motor without commutator
US5038083A (en) 1987-05-27 1991-08-06 Papst-Motoren Gmbh & Co. Kg Driver circuit for a d.c. motor without commutator
US4973869A (en) 1988-07-29 1990-11-27 Samsung Electro-Mechanics Co., Ltd. Brushless coreless DC motor
JPH0366553U (en) 1989-10-31 1991-06-27
US5130583A (en) 1989-11-13 1992-07-14 Ricoh Company, Ltd. Linear motor
WO1991007805A1 (en) 1989-11-14 1991-05-30 The United States Of America, Secretary Of The Army, The Pentagon Permanent magnet structure for use in electric machinery
US5117142A (en) 1989-11-20 1992-05-26 501 Ibk Ab Permanent magnetized synchronous machine designed according to the transverse flux principle
US5543674A (en) 1990-07-02 1996-08-06 Radio Energie Dynamoelectric machine composed of sectors having transverse fluxes
US5142181A (en) 1990-07-09 1992-08-25 Newell Stanley E Direct current dynamo
JPH04359656A (en) 1990-07-31 1992-12-11 Sony Corp Rotor yoke
US5289072A (en) 1990-11-23 1994-02-22 J. M. Voith Gmbh Electrical machine
US5128570A (en) 1991-06-24 1992-07-07 Japan Servo Co., Ltd. Permanent magnet type stepping motor
WO1993015547A1 (en) 1992-01-29 1993-08-05 Stridsberg Innovation Ab Brushless dc motors/generators
US6414408B1 (en) 1992-04-06 2002-07-02 General Electric Company Integral motor and control
JPH065380A (en) 1992-06-18 1994-01-14 Achilles Corp Manufacture of electrostatic charge removing device
US5474799A (en) 1992-10-13 1995-12-12 Reliance Electric Industrial Company Apparatus and method for coating an electromagnetic coil
US5625241A (en) * 1994-07-28 1997-04-29 Energy Research Corporation Carousel electric generator
US5777418A (en) 1995-06-23 1998-07-07 Voith Turbo Gmbh Transverse flux motor with magnetic floor gap
US5708310A (en) 1995-07-24 1998-01-13 Japan Servo Co., Ltd. Permanent magnet type stepping motor
US5952743A (en) 1995-08-29 1999-09-14 Sidey; Roger Charles Hey Electric motor
US5942828A (en) 1995-12-16 1999-08-24 Hill; Wolfgang Transverse flux machine
US6011339A (en) * 1996-01-18 2000-01-04 Shibaura Engineering Works Co., Ltd. Motor mounted in a vehicle
US5838079A (en) 1996-05-28 1998-11-17 Mitsubishi Denki Kabushiki Kaisha Synchronous linear motor using permanent magnet
US6043579A (en) 1996-07-03 2000-03-28 Hill; Wolfgang Permanently excited transverse flux machine
US5973436A (en) 1996-08-08 1999-10-26 Rolls-Royce Power Engineering Plc Electrical machine
US5894902A (en) 1996-09-05 1999-04-20 The United States Of America As Represented By The Secretary Of The Navy Self-propelled wheel for wheeled vehicles
RU2131637C1 (en) 1998-02-04 1999-06-10 Караваев Виктор Терентьевич Electric machine
US6710581B1 (en) 1998-02-11 2004-03-23 I.S. Motor Korea Co., Ltd. Constant-power brushless DC motor
US5977684A (en) * 1998-06-12 1999-11-02 Lin; Ted T. Rotating machine configurable as true DC generator or motor
US6222287B1 (en) 1998-11-06 2001-04-24 Canon Kabushiki Kaisha Motor
WO2000054396A1 (en) 1999-03-05 2000-09-14 Helmut Schiller Electric dc generator
JP2002539748A (en) 1999-03-05 2002-11-19 シラー,ヘルムート DC electric machine
US6741010B2 (en) 2000-01-19 2004-05-25 Rolls Royce Plc Rotor disc assembly having rotor rim with alternate magnets and laminated pole pieces
US6492758B1 (en) 2000-02-25 2002-12-10 Fisher & Paykel Limited Polyphase transverse flux motor
US20030230946A1 (en) 2000-07-19 2003-12-18 Durham Gary L. Flux diode motor
DE10037787A1 (en) 2000-08-03 2002-03-14 Landert Motoren Ag Permanent magnet excited synchronous machine e.g. general purpose drive motors, has external rotor design with external rotor joined rotationally-rigidly to rotatable shaft, around common axis
US6847135B2 (en) 2000-12-13 2005-01-25 Robert Bosch Gmbh Unipolar transverse flux machine
US6952068B2 (en) 2000-12-18 2005-10-04 Otis Elevator Company Fabricated components of transverse flux electric motors
US7124495B2 (en) 2000-12-18 2006-10-24 Otis Elevator Company Method for making an electric motor
JP2001211623A (en) 2000-12-21 2001-08-03 Nitto Zoki Kk Flat motor
US6729140B2 (en) 2001-02-09 2004-05-04 Rolls-Royce Plc Electrical machine
US6870284B2 (en) 2001-02-23 2005-03-22 Canon Kabushiki Kaisha Linear motor and stage apparatus, exposure apparatus, and device manufacturing method using the same
US6700267B2 (en) 2001-03-01 2004-03-02 Deere & Company Transverse flux drive
US20020130655A1 (en) 2001-03-13 2002-09-19 Ntn Corporation Wheel support bearing assembly
US20040155548A1 (en) 2001-05-08 2004-08-12 Rasmussen Peter Omand Transverse flux machine with stator made of e-shaped laminates
US6798089B1 (en) 2001-07-05 2004-09-28 Anorad Corporation Forcer and associated three phase linear motor system
US20030011455A1 (en) 2001-07-16 2003-01-16 Hitachi, Ltd. Magnet, a method of adjustment of magnetic field and a magnetic resonance imaging apparatus
US20030102770A1 (en) 2001-07-31 2003-06-05 Laskaris Evangelos Trifon High temperature superconductor synchronous rotor coil support insulator
US20040061397A1 (en) 2001-08-06 2004-04-01 Mitchell Rose Ring-shaped motor core
US20030025417A1 (en) 2001-08-06 2003-02-06 Mitchell Rose Ring-shaped motor core with toroidally-wound coils
US6803691B2 (en) 2001-08-06 2004-10-12 Mitchell Rose Ring-shaped motor core
US6888272B2 (en) 2001-08-16 2005-05-03 Robert Bosch Gmbh Unipolar transverse magnetic flux machine
US20030127917A1 (en) 2001-12-26 2003-07-10 Kang Do Hyun Transverse flux linear motor with permanent magnet excitation
WO2003065554A1 (en) 2002-01-25 2003-08-07 California Linear Devices, Inc. Bearing surface layer for magnetic motor
US7030529B2 (en) 2002-04-06 2006-04-18 Robert Bosch Gmbh Electrical machines, especially engines excited by permanent magnets
WO2003094328A1 (en) 2002-04-30 2003-11-13 Wavecrest Laboratories Llc Rotary electric motor having both radial and axial air gap flux paths between stator and rotor segments
US7652406B2 (en) 2002-06-26 2010-01-26 Amotech Co., Ltd. Apparatus for driving drum of washing machine
JP2004129339A (en) 2002-09-30 2004-04-22 Mitsubishi Electric Corp Dc motor and manufacturing method thereof
US7777381B2 (en) 2002-11-18 2010-08-17 Seiko Epson Corporation Magnetic structure and motor employing said magnetic structure, and driver comprising said motor
US7164220B2 (en) 2002-12-07 2007-01-16 Rolls-Royce Plc Stator pole structure for an electrical machine
US7067942B2 (en) 2003-02-13 2006-06-27 Canon Kabushiki Kaisha Linear motor, moving stage system, exposure apparatus, and device manufacturing method
US20060192453A1 (en) 2003-05-27 2006-08-31 Gieras Jacek F Modular transverse flux motor with integrated brake
US6924574B2 (en) 2003-05-30 2005-08-02 Wisconsin Alumni Research Foundation Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine
US20040239199A1 (en) 2003-05-30 2004-12-02 Wisconsin Alumni Research Foundation Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine
US20040251759A1 (en) 2003-06-12 2004-12-16 Hirzel Andrew D. Radial airgap, transverse flux motor
US20080246362A1 (en) 2003-06-12 2008-10-09 Hirzel Andrew D Radial airgap, transverse flux machine
US20050104456A1 (en) 2003-11-13 2005-05-19 Smc Corporation Electromagnetic actuator
US20050179336A1 (en) 2003-11-17 2005-08-18 Masahiro Hasebe Axial gap electric rotary machine
US20080048505A1 (en) 2003-12-09 2008-02-28 Toshiba Kikai Kabushiki Kaisha Coreless Linear Motor
US7884563B2 (en) 2004-03-12 2011-02-08 Seiko Epson Corporation Motor and drive control system thereof
JP2005287103A (en) 2004-03-26 2005-10-13 Ceremo:Kk Power generator
US20070247017A1 (en) 2004-05-29 2007-10-25 University Of Durham Axial-Flux, Permanent Magnet Electrical Machine
US20060022544A1 (en) 2004-07-30 2006-02-02 Ichinomiya Denki Co., Ltd. Stator and brushless motor
US8212445B2 (en) 2004-08-12 2012-07-03 Exro Technologies Inc. Polyphasic multi-coil electric device
US20060038456A1 (en) 2004-08-20 2006-02-23 Dumitru Bojiuc Monopole field electric motor generator
US20060043821A1 (en) 2004-08-25 2006-03-02 Fujitsu General Limited Axial air-gap electronic motor
US7633198B2 (en) * 2005-03-16 2009-12-15 Robert Ernest Kirkman 50 DN alternator stator terminal insulator apparatus
JP2006280066A (en) 2005-03-29 2006-10-12 Toyota Motor Corp Stator and rotary electric machine
WO2006117210A1 (en) 2005-05-04 2006-11-09 Bosch Rexroth Ag Phase module for a transverse flux motor
US20090102305A1 (en) 2005-06-29 2009-04-23 Union Plastic (Hangzhou) Machinery Co., Ltd. Brushless electric machine
US7906885B2 (en) 2005-06-29 2011-03-15 Union Plastic (Hangzhou) Machinery Co., Ltd. Brushless electric machine
WO2007000054A1 (en) 2005-06-29 2007-01-04 Eocycle Technologies Inc. Transverse flux electrical machine with segmented core stator
US7466058B2 (en) 2005-06-29 2008-12-16 Eocycle Technologies, Inc. Transverse flux electrical machine with segmented core stator
US8159104B1 (en) 2005-08-22 2012-04-17 Clearwater Holdings, Ltd DC induction electric motor-generator with magnetic gap self commutating laminated ferromagnetic rotating core
US8074922B2 (en) 2005-08-22 2011-12-13 Dumitru Bojiuc Discoidal flying craft
US20070216249A1 (en) 2006-03-16 2007-09-20 Mtu Aero Engines Gmbh Transverse flux machine and turbine-type machine having such a transverse flux machine
US20070228860A1 (en) * 2006-03-31 2007-10-04 Rao Dantam K Three-gapped motor with outer rotor and stationary shaft
US7960893B2 (en) 2006-04-06 2011-06-14 Amotech Co., Ltd. Method of making integrated stator, brushless direct-current motor of radial core type double rotor structure using the integrated stator, and method of making the same
US7944112B2 (en) 2006-04-06 2011-05-17 Amotech Co., Ltd. Method of making integrated stator, brushless direct-current motor of radial core type double rotor structure using the integrated stator, and method of making the same
US20070267929A1 (en) 2006-05-16 2007-11-22 Minebea Co., Ltd. Stator arrangement and rotor arrangement for a transverse flux machine
US7701678B2 (en) 2006-05-26 2010-04-20 Pratt & Whitney Canada Corp. Electric motor control
US8058763B2 (en) 2006-05-27 2011-11-15 Converteam Uk Ltd Rotor having an inverted U-shaped retainer and magnet carrier
US8106563B2 (en) 2006-06-08 2012-01-31 Exro Technologies Inc. Polyphasic multi-coil electric device
US20080122311A1 (en) 2006-06-13 2008-05-29 The Board Of Regents, The University Of Texas System Rotor assembly and method of assembling a rotor of a high speed electric machine
US8334634B2 (en) 2006-07-26 2012-12-18 Millennial Research Corporation High power rotary device
US8053946B2 (en) 2006-07-27 2011-11-08 Sumitomo Heavy Industries, Ltd. Coreless and brushless direct-current motor, Gifford McMahon (GM) cryogenic cooler, pulse tube cryogenic cooler, cryopump, magnetic resonance imaging (MRI) apparatus, superconducting magnet (SCM) apparatus, nuclear magnetic resonance (NMR) apparatus, and cryogenic cooler for cooling semiconductor
US20080136272A1 (en) 2006-12-07 2008-06-12 Toshio Ishikawa Rotating electrical machine
US20080211326A1 (en) 2006-12-28 2008-09-04 Korea Electro Technology Research Institute Inner rotor type permanent magnet excited transverse flux motor
US7944107B2 (en) 2006-12-29 2011-05-17 Michael Thoms Synchronous permanent magnet machine
US20100101879A1 (en) 2007-02-14 2010-04-29 Mcvickers Jack C Motor Battery Systems
US7492074B1 (en) 2007-03-30 2009-02-17 Norman Rittenhouse High-efficiency wheel-motor utilizing molded magnetic flux channels with transverse-flux stator
US7755244B2 (en) * 2007-05-11 2010-07-13 Uqm Technologies, Inc. Stator for permanent magnet electric motor using soft magnetic composites
US20080278020A1 (en) 2007-05-11 2008-11-13 Uqm Technologies, Inc. Stator for permanent magnet electric motor using soft magnetic composites
US20090243413A1 (en) 2007-06-27 2009-10-01 Brooks Automation, Inc. Robot drive with magnetic spindle bearings
US8283813B2 (en) 2007-06-27 2012-10-09 Brooks Automation, Inc. Robot drive with magnetic spindle bearings
EP2168225A1 (en) 2007-07-09 2010-03-31 Clearwater Holdings, Ltd. Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US8232695B2 (en) 2007-07-09 2012-07-31 Clearwater Holdings, Ltd Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
USRE46449E1 (en) 2007-07-09 2017-06-20 Clearwater Holdings, Ltd. Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
WO2009009075A1 (en) 2007-07-09 2009-01-15 Clearwater Holdings, Ltd. Electromagnetic machine with independent removable coils, modular parts and self sustained passive magnetic bearing
US20090026869A1 (en) 2007-07-24 2009-01-29 Christian Kaehler Transverse flux reluctance machine and method for manufacturing same
US20090108712A1 (en) 2007-07-27 2009-04-30 Holtzapple Mark T Short-flux path motors / generators
TW200919903A (en) 2007-08-11 2009-05-01 Clearwater Holdings Ltd Electrical commutator with segmented brushes
US8339009B2 (en) 2007-09-12 2012-12-25 Ngentec Ltd. Magnetic flux conducting unit
US8288916B2 (en) 2007-09-13 2012-10-16 Eric Stephane Quere Composite electromechanical machines with uniform magnets
US8299676B2 (en) 2007-09-14 2012-10-30 Shin-Etsu Chemical Co., Ltd. Axial gap type coreless rotating machine
US7986069B2 (en) 2007-10-02 2011-07-26 Seiko Epson Corporation Brushless electric machine
US8110961B2 (en) 2007-11-20 2012-02-07 Ut-Battelle, Llc Permanent-magnet-less machine having an enclosed air gap
US8264120B2 (en) 2007-11-20 2012-09-11 Ut-Battelle, Llc Permanent-magnet-less synchronous reluctance system
US8084879B2 (en) 2007-11-26 2011-12-27 Siemens Aktiengesellschaft Wind turbine
US8089175B2 (en) 2007-11-26 2012-01-03 Siemens Aktiengesellschaft Direct drive generator and wind turbine
WO2009070333A1 (en) 2007-11-30 2009-06-04 Rittenhouse Norman P Wind turbine generator
US8358046B2 (en) 2007-12-28 2013-01-22 Platon Mihai C Hybrid electric power system with distributed segmented generator/motor
US7579742B1 (en) 2008-01-17 2009-08-25 Norman Rittenhouse High-efficiency parallel-pole molded-magnetic flux channels transverse wound motor-dynamo
US8354768B2 (en) 2008-01-21 2013-01-15 Avio S.P.A. Modular electromagnetic device with reversible generator-motor operation
US8536751B2 (en) 2008-01-21 2013-09-17 Avio S.P.A. Electromagnetic device with reversible generator-motor operation
US8115361B2 (en) 2008-01-31 2012-02-14 Honda Motor Co., Ltd. Coil assembly for electrical rotating machine, stator for electrical rotating machine, and electrical rotating machine
US7990019B2 (en) 2008-02-05 2011-08-02 Sam Kyung Sung Flat motor having a dual air gap
US20100327787A1 (en) 2008-02-22 2010-12-30 Kabushiki Kaisha Toshiba Permanent-magnet-type rotating electrical machine
US8330404B2 (en) 2008-02-22 2012-12-11 Kabushiki Kaisha Toshiba Permanent-magnet-type rotating electrical machine
US8294322B2 (en) 2008-03-28 2012-10-23 Toyota Jidosha Kabushiki Kaisha Rotating electrical machine
US20110058967A1 (en) 2008-05-14 2011-03-10 Mitsubishi Electric Corporation Magnetic inductor rotary machine and fluid transfer apparatus that uses the same
US8350442B2 (en) 2008-07-22 2013-01-08 Honda Motor Co., Ltd. Power plant
US8258782B2 (en) 2008-07-30 2012-09-04 Tdk Corporation Angle detecting apparatus and angle detecting method
US8546988B2 (en) 2008-08-08 2013-10-01 Rolls-Royce Plc Magnetic gear arrangement
US8381389B2 (en) 2008-09-03 2013-02-26 Renzo Lisi Method for assembling the rotor of an electric machine
US8536758B2 (en) 2008-09-03 2013-09-17 Renzo Lisi Electric rotary machine
US8274191B2 (en) 2008-09-15 2012-09-25 Siemens Akteingesellschaft Stator arrangement, generator and wind turbine
US8207648B2 (en) 2008-10-15 2012-06-26 Panasonic Corporation Dual rotor having varying air gaps
US7812500B1 (en) 2008-11-12 2010-10-12 Demetrius Calvin Ham Generator / electric motor
US8390168B2 (en) 2008-11-20 2013-03-05 Ut-Battelle, Llc Permanent-magnet-less machine having an enclosed air gap
US8188633B2 (en) 2009-01-05 2012-05-29 Eric Stephane Quere Integrated composite electromechanical machines
US8482171B2 (en) 2009-01-05 2013-07-09 Rolls-Royce Plc Magnetic gear arrangement
US8154146B2 (en) 2009-01-14 2012-04-10 Amsc Windtec Gmbh Generator, nacelle, and mounting method of a nacelle of a wind energy converter
US8169109B2 (en) 2009-03-13 2012-05-01 Nidec Sr Drives Ltd. Electrical machine with dual radial airgaps
US7791245B1 (en) 2009-03-24 2010-09-07 Gm Global Technology Operations, Inc. Optimized electric machine for smart actuators
US8278872B2 (en) 2009-04-16 2012-10-02 Shenzhen Futaihong Precision Industry Co., Ltd. Charging device
US8207644B2 (en) 2009-07-14 2012-06-26 Hamilton Sundstrand Corporation Hybrid cascading lubrication and cooling system
US8373319B1 (en) 2009-09-25 2013-02-12 Jerry Barnes Method and apparatus for a pancake-type motor/generator
US20110109190A1 (en) 2009-11-09 2011-05-12 Yasuaki Aoyama Rotary electrical machine
US8432081B2 (en) 2009-11-10 2013-04-30 Yuanchang Wang Direct rotation-inducing generator
US20120299430A1 (en) 2009-12-22 2012-11-29 Hoganas Ab (Publ) Rotor for modulated pole machine
US20120306212A1 (en) 2009-12-30 2012-12-06 Sarmiento Munoz Gustavo Direct-action superconducting synchronous generator for a wind turbine
US8344567B2 (en) 2010-03-16 2013-01-01 Kabushiki Kaisha Yaskawa Denki Rotating electrical machine
US20110234033A1 (en) 2010-03-23 2011-09-29 Calnetix, Inc. Combination radial/axial electromagnetic actuator with an improved axial frequency response
US8436507B2 (en) 2010-05-06 2013-05-07 Industrial Technology Research Institute Adjustable axial-flux disc motor
US20130270955A1 (en) 2010-10-08 2013-10-17 Global Motors Invent Pty Ltd Electromagnetic machine
US20120228977A1 (en) 2011-03-09 2012-09-13 Nova Torque, Inc. Rotor-stator structures with an outer rotor for electrodynamic machines
US20120299405A1 (en) 2011-05-26 2012-11-29 Yue Li Electric motor
US20140191612A1 (en) 2013-01-09 2014-07-10 Eurocopter Electric machine with multiple air gaps and a 3d magnetic flux
TW201444231A (en) 2013-01-24 2014-11-16 Clearwater Holdings Ltd Flux machine
KR20160130755A (en) 2013-01-24 2016-11-14 클리어워터 홀딩스, 엘티디. Flux machine
CN106233579A (en) 2013-01-24 2016-12-14 清水控股有限公司 Flux electric machine
CL2016001873A1 (en) 2013-01-24 2017-02-17 Clearwater Holdings Ltd Flow machine
WO2016014717A1 (en) 2014-07-23 2016-01-28 Clearwater Holdings, Ltd Flux machine
TW201618438A (en) 2014-07-23 2016-05-16 清水控股股份有限公司 Flux machine

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
Decision of Rejection dated Jan. 1, 2016. Japanese Patent Application No. JP2014-111950.
Decision of Rejection dated Jan. 26, 2016. Japanese Patent Application No. JP2014-111950.
Extended European Search Report for Application No. EP 08780071.0, dated May 22, 2015 (11 pages).
First Examination Report for Indian Patent Application No. 117/MUMNP/2010, dated Sep. 19, 2017 (6 pages).
International Search Report and Written Opinion of International Searching Authority for International Application No. PCT/US2008/008434, dated Sep. 26, 2008 (4 pages).
Notice of Reasons for Rejection in Japanese Patent Application No. 2016-100297, with English translation, dated Mar. 7, 2017 (4 pages).

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE49413E1 (en) * 2007-07-09 2023-02-07 Clearwater Holdings, Ltd. Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing

Also Published As

Publication number Publication date
JP2014161224A (en) 2014-09-04
JP6251317B2 (en) 2017-12-20
CN101842965A (en) 2010-09-22
EA201000190A1 (en) 2010-08-30
USRE49413E1 (en) 2023-02-07
CN101842965B (en) 2012-11-28
BRPI0813185B1 (en) 2023-12-19
USRE46449E1 (en) 2017-06-20
TWI446689B (en) 2014-07-21
JP2010541519A (en) 2010-12-24
MX2010000366A (en) 2010-03-29
EP2168225A1 (en) 2010-03-31
EP2168225A4 (en) 2015-06-24
JP2016167979A (en) 2016-09-15
WO2009009075A1 (en) 2009-01-15
KR20100057785A (en) 2010-06-01
TW200913439A (en) 2009-03-16
US8232695B2 (en) 2012-07-31
US20100289363A1 (en) 2010-11-18
BRPI0813185A2 (en) 2014-12-23
EA017646B1 (en) 2013-02-28
KR101531728B1 (en) 2015-06-25

Similar Documents

Publication Publication Date Title
USRE48211E1 (en) Electromagnetic machine with independent removable coils, modular parts and self-sustained passive magnetic bearing
US7348703B2 (en) Monopole field electric motor-generator with switchable coil configuration
US7791242B2 (en) DC induction electric motor-generator
US11784523B2 (en) Multi-tunnel electric motor/generator
US20060038456A1 (en) Monopole field electric motor generator
US20220302811A1 (en) Multi-tunnel electric motor/generator
US7834503B2 (en) Immersed windings, monopole field, electromagnetic rotating machine
US20060082237A1 (en) Toroidal AC motor
RU2154885C2 (en) Electric drive incorporating more than one permanent-magnet exited rotors (design versions) and used for shavers
US6191517B1 (en) Brushless synchronous rotary electrical machine
JPS62296750A (en) Commutator motor
JPWO2005091464A1 (en) Rotating machine
MX2008001720A (en) Monopole filed electric motor generator

Legal Events

Date Code Title Description
AS Assignment

Owner name: CLEARWATER HOLDINGS, LTD., CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOJIUC, DUMITRU;REEL/FRAME:042748/0860

Effective date: 20090316