| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 310216008 |
Plural axially laminated segments circumferentially united
| 55 |
| 310216057 |
Laminated pole
| 18 |
| 310216041 |
Having axially extended spiral lamination
| 12 |
| 310216015 |
Plural diverse elements
| 10 |
| 310216007 |
Plural laminated segments radially united
| 9 |
| 310216011 |
Circumferentially offset laminations
| 8 |
| 310216048 |
Having interlamina mating structure on lamina face
| 8 |
| 310216065 |
Adhesively bonded laminations
| 6 |
| 310216049 |
Having a lamination including a radially extending mounting projection (e.g., mounting ear)
| 6 |
| 310216045 |
Radially stacked | 3 |
| 20130134825 | METHOD OF CONSTRUCTING CORE WITH TAPERED POLE PIECES AND LOW-LOSS ELECTRICAL ROTATING MACHINE WITH SAID CORE - An electrical rotating machine having a stator or a rotor with a core that includes a plurality of tapered pole pieces is a low loss electrical machine that results in improvements such as higher output power, higher torque and higher efficiency than a machine that does not have tapered pole pieces. The stator or the rotor with tapered pole pieces may be applied to a power train in automobiles, power tools, and various appliances. The core is constructed by winding an iron-based amorphous magnetic alloy ribbon to form a cylinder-shaped core, then heating, impregnating with resin, and machining by cutting the cylinder-shaped core to form a plurality of tapered pole pieces being separated in an alternating manner by a plurality of slots. The cores having an outside diameter of 50 mm-1200 mm, a tapered angle of 10°-45°, and a slot depth of 10 mm-210 mm are advantageous. | 05-30-2013 |
| 20110095642 | MAGNETIC IRON CORE, METHOD FOR MANUFACTURING THE SAME, AXIAL-GAP ROTATING ELECTRICAL MACHINE, AND STATIC ELECTRICAL MACHINE - The invention provides a high-quality magnetic iron core by concurrently satisfying requirements for enhancement in strength of a wound iron core, particularly, strength of a wound iron core made up of amorphous foil strips, reduction in manufacturing time, and manufacturing cost. The invention also provides an electromagnetic application product highly efficient and small in size as an application of the magnetic iron core. The magnetic iron core includes an amorphous foil strip being wound to form the magnetic iron core. The magnetic iron core is filled with resin, the resin being disposed in every plural turns of windings of the amorphous foil strip. Preferably, the magnetic iron core is filled with the resin, the resin being disposed by using a spacer in every plural turns of windings of the amorphous foil strip. Preferably, the magnetic iron core is covered with resin which is integrated with and continuous to the resin disposed in every plural turns of windings of the amorphous foil strip. | 04-28-2011 |
| 20110316381 | ARMATURE CORE - Teeth are arranged annularly around a rotation axis. The yoke has through holes. The through holes open in a radial direction around the rotation axis and in an axial direction along the rotation axis. The teeth are inserted through the through holes. A metal plate is arranged to face the yoke in the axial direction. A reinforcing plate is fixed to the teeth. | 12-29-2011 |
| 310216055 |
Having a particular outer peripheral shape | 2 |
| 20110285242 | STRESS REDUCTION IN ELECTRICAL MACHINES - A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the lamination when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine. | 11-24-2011 |
| 20150333576 | LOCKING STRUCTURE FOR STATOR CORE - A locking structure for a stator core that locks the stator core having a circular outer circumference into an inner circumference of a cylindrical housing includes a first cut-out formed in an outer circumference of the stator core and a second cut-out formed in an inner circumference of the housing. The locking structure also includes a key interposed between the first and second cut-outs. | 11-19-2015 |
| 310216021 |
E-shaped | 2 |
| 20090174280 | POLYPHASE ELECTRIC MOTOR ESPECIALLY FOR DRIVING PUMPS OR VENTILATORS - A polyphase motor, for example for applications for driving pumps or ventilators in the automobile industry, including a stator part excited by electric coils and a rotor exhibiting N pairs of poles that are magnetized radially in alternate senses, the stator part exhibiting wide teeth and narrow teeth extending radially from an annular ring. The wide teeth carry the coil windings and the distance between a wide tooth and a narrow tooth is greater than the width of a narrow tooth. | 07-09-2009 |
| 20130076194 | Electromechanical Device and Assembly Method - An electromechanical device includes a rotor and a stator, wherein the stator includes multiple teeth excitable by a coil. The stator is formed from multiple stator sections with one section having a protrusion in spaced relation with a first tooth and a second section having a second protrusion in spaced relation with a second tooth. The protrusions have voids for receiving opposing protrusions in an overlapping manner to integrally form the first stator section with the second stator section. The electrical coil is extended around at least a portion of one tooth before mating the multiple stator sections. The rotor has a diametral magnetized magnet extending into the aperture. | 03-28-2013 |
| 310216005 |
Having winding lead accommodation structure | 2 |
| 20140139067 | DIE ASSEMBLY AND METHOD FOR MANUFACTURING WOUND MOTOR LAMINATED ARTICLE - A metal article, such as a stator core, is formed from a continuous strip of wound sheet stock material including winding slot cutouts. The winding slot cutouts are maintained at a substantially constant width throughout most of the radial extent of the winding slots in the finished article, except that one or more of the first and/or last wound layers (i.e., the radially innermost and radially outermost layers) may define winding slot cutouts that are wider than the other winding slot cutouts. Several radial layers may define cutout widths that are progressively expanded such that the resulting winding slot has terminal ends with edges that defining a stair-step profile that approximates a “radiused” or rounded edge. This rounded edge profile protects windings projecting radially into or outwardly from the winding slots near the edge of such slots. | 05-22-2014 |
| 20150372545 | AXIAL-FLUX ELECTRIC MACHINE WITH WINDING ROTOR AND METHOD FOR THE PRODUCTION THEREOF - An axial-flux electric machine with a winding rotor comprises a stator section and a rotor section, both developing around and axis. The rotor section comprises a rotor, which, in turn, comprises a toroidal rotor core made of a ferromagnetic material and a plurality of windings and of teeth, which are angularly distributed on the rotor core in an alternated configuration. The teeth have, on at least one lateral surface of theirs, a shaped profile defining at least one holding surface, which is such as to cooperate with a resin matrix, which is suited to steadily lock the teeth on the rotor core. | 12-24-2015 |
| 310216053 |
Having integral spider (e.g., spokes) | 2 |
| 20090315428 | LAMINATION OF STATOR OF THREE-PHASE MOTOR FOR INCREASING WINDING SPACE - A lamination of a stator of a three-phase motor has a core ring and multiple winding frames. Each winding frame has a body and two wings. The body is implemented for winding wires thereon, is elongated and defines two side edges and an outer end. The wings oppositely protrude transversely from the outer end of the body and each defines an inner edge adjacent to one corresponding side edge of the adjacent body to retain the wires wound on the body. The inner edges of the wings are formed perpendicular to, or slightly outward relative to the side edges of the body. Such that interference between the wings and wound wires near the outer ends of the bodies can be prevent, and a capacity of the winding space defined around the body is increased and an efficient of wire winding is ensured. | 12-24-2009 |
| 20120019095 | RADIAL PIN COUPLED HUB AND RIM ASSEMBLY - A rotor assembly includes a lamination and a hub. The hub includes an inner portion and an outer portion surrounding the inner portion and separated from it by an expansion gap. The rotor assembly also includes two or more connecting members coupling the inner portion to the outer portion, the connecting members having a first end and a second end. | 01-26-2012 |
| 310216054 |
Non-planar lamination (e.g., wavy) | 2 |
| 20110062817 | STATOR CORE FOR DYNAMO-ELECTRIC MACHINE AND MANUFACTURING METHOD THEREFOR - A claw-pole type dynamo-electric machine, from which an improvement in productivity of stator winding can be expected, has such as a structure that the whole stator wiring is covered with a magnetic body, and thereby the inductance increases to pose the problem of decreasing a power factor. Disclosed is a stator core of a dynamo-electric machine in which a plurality of stator cores of respective phases are arranged independently in the direction of the rotating shaft of a rotor, the magnetic poles of the stator cores are arranged in the shape of a wave in the circumferential direction of the rotating shaft of a rotor, slots extending in the direction of the rotating shaft are formed between respective magnetic poles, and the stator winding can be arranged in a slot formed on the side of the inner end face of the magnetic pole arranged in the shape of a wave and in the axial direction of the rotating shaft. | 03-17-2011 |
| 20150028717 | Apparatus And System For Attaching Integral Spacers To Laminations - Disclosed are methods, apparatuses, and systems with regard to laminations. In an embodiment, an apparatus includes a lamination having a variable thickness and a spacer connected with the lamination at a location, wherein the location of the spacer is based on a determined thickness of the lamination. | 01-29-2015 |
| 310216023 |
C- or U-shaped core | 2 |
| 20140265714 | TRANSVERSE FLUX STATOR CORE MANUFACTURE - A transverse flux stator core is provided and includes laminations. Each of the laminations has a desired profile and is non-planar. The laminations are bonded in a stacked, aligned arrangement. | 09-18-2014 |
| 20140210305 | SINGLE PHASE SWITCHED RELUCTANCE MACHINE WITH AXIALLY EXTENDING STATOR LAMINATIONS - A reluctance machine includes a stator having a plurality of stator poles and a rotor having a plurality of rotor poles and configured to rotate about an axis of rotation. Each of the stator poles includes a primary stator pole and an auxiliary stator pole. The auxiliary stator pole is axially aligned with the primary stator pole in the direction of the axis of rotation. | 07-31-2014 |
| 310216006 |
Having particular grain orientation | 1 |
| 20120119610 | TRANSVERSE AND/OR COMMUTATED FLUX SYSTEMS HAVING SEGMENTED STATOR LAMINATIONS - Electrical machines, for example transverse flux machines and/or commutated flux machines, may be configured to achieve increased efficiency, increased output torque, and/or reduced operating losses via use of laminated materials, for example laminated materials configured with cuts and/or segmentations. Segmentations may also assist with manufacturability, mechanical retention of components, and the like. | 05-17-2012 |
| Entries |
| Document | Title | Date |
|---|
| 20090195109 | ELECTRIC MACHINE - A stator assembly adapted for use in an external rotor electric motor. The assembly includes a stator core having a hub, a plurality of teeth extending radially outward from the hub, a root tooth diameter and an outer diameter. Each tooth has a root, a neck extending from the root and a head opposite the root. The neck has a maximum width. Each adjacent pair of teeth has a pitch measured at the roots of the corresponding teeth. The assembly includes a winding wrapped around each tooth of at least three teeth of the stator core. A ratio of the root tooth diameter of the stator core to the outer diameter of the stator core is less than about 0.75. A ratio of the maximum tooth neck width to the tooth pitch measured at the root of the teeth is greater than about 0.36. | 08-06-2009 |
| 20100052464 | AC-INDUCTION-MOTOR ROTOR LAMINATION HAVING ROTOR SLOTS - An AC-induction-motor rotor lamination has a longitudinal axis and circumferentially spaced apart and closed rotor slots. Each rotor slot includes first through fifth corners, a straight slot base, straight first and second slot sides, and first and second curved sides. The slot base extends from the first corner to the second corner, the first slot side extends substantially radially inward from the second corner to the third corner, and the second slot side extends substantially radially inward from the first corner to the fourth corner. The first and second curved sides extend from a corresponding one of the third and fourth corners to the fifth corner. A rotor lamination having slot sides extending substantially radially outwardly from the second and first corners, and rotor laminations having open rotor slots (with slot sides extending substantially radially inward or outward) are also described. | 03-04-2010 |
| 20110127876 | LAMINATED STATOR CORE - A laminated stator core | 06-02-2011 |
| 20110248596 | ROTOR FOR ELECTRIC ROTATING MACHINE - A rotor for an electric rotating machine includes a rotor core and a plurality of magnetic poles. The rotor core is formed of a plurality of magnetic steel sheets laminated in the axial direction of the rotor core. The magnetic poles are formed on a radially outer periphery of the rotor core. The magnetic poles are arranged at predetermined intervals in the circumferential direction of the rotor core so that the polarities of the magnetic poles alternate between north and south in the circumferential direction. Furthermore, the magnetic steel sheets forming the rotor core are welded so that a plurality of welds are formed on one of radially outer and inner surfaces of the rotor core. Each of the welds has a pair of axial end portions that are offset from each other in the circumferential direction of the rotor core and electrically connected to each other. | 10-13-2011 |
| 20110273054 | ELECTRICAL STEEL, A MOTOR, AND A METHOD FOR MANUFACTURE OF ELECTRICAL STEEL WITH HIGH STRENGTH AND LOW ELECTRICAL LOSSES - In a method for manufacture of electrical steel a liquid steel mixture is created with a specified mixture chemistry. A continuous casting is performed to convert the liquid steel mixture to a slab. Hot roll steel band is created from the slab which is then pickled and hot band annealed, and then a cold rolled steel strip is formed. In a continuous annealing line, the cold rolled strip is annealed to achieve a partial recrystallization with a smaller grain size than would be the grain size with a complete recrystallization. Electrical steel created by the method is used for rotors and matching stators of a motor with properties at high strength and low electrical losses. | 11-10-2011 |
| 20110309710 | Core and motor having the same - Disclosed is a core including a plurality of core layers in a laminated structure formed through one-directional press shearing and having an insulating layer formed on the surface thereof prevented from being damaged by burrs formed through the press shearing when a winding coil is wound on and around the core, and a motor having the core. The core for a motor includes: a plurality of core plates having a laminated structure formed through one-directional press shearing; and a chamfered portion formed on at least some of the corners of a face opposed to one face of the core plate to which force is applied by the press shearing. | 12-22-2011 |
| 20120062065 | STATOR OF VEHICLE AC GENERATOR AND METHOD FOR MANUFACTURING THE SAME - In a vehicle AC generator, a stator core ( | 03-15-2012 |
| 20120086302 | STATOR CORE AND METHOD OF MANUFACTURING SAME - A stator core | 04-12-2012 |
| 20120326554 | STATOR, METHOD FOR MANUFACTURING SAME, AND MOTOR - The present invention provides a method for manufacturing a stator configured to ensure insulation properties between a conductor and an armature core while preventing a manufacturing cost from increasing and preventing a space factor from lowering. In an edge-removing step, a plurality of independent edge-removing punches, which correspond to one slot S or two or more slots S press and chamfer a corner portion of an axial opening edge of the slot in an axial end core sheet of the armature core. | 12-27-2012 |
| 20130002085 | Structured magnetic material - A bulk material formed on a surface is provided. The bulk material includes a plurality of adhered domains of metal material, substantially all of the domains of the plurality of domains of metal material separated by a predetermined layer of high resistivity insulating material. A first portion of the plurality of domains forms a surface. A second portion of the plurality of domains includes successive domains of metal material progressing from the first portion. Substantially all of the domains in the successive domains each include a first surface and a second surface, the first surface opposing the second surface, the second surface conforming to a shape of progressed domains, and a majority of the domains in the successive domains in the second portion having the first surface comprising a substantially convex surface and the second surface comprising one or more substantially concave surfaces. | 01-03-2013 |
| 20130062989 | METHOD FOR CONNECTING END SECTIONS OF AN ANNULAR LAMINATED ARTICLE AND ARTICLES MADE THEREFROM - A method for securing the end sections of an annular laminated article, such as a stator core, which includes a plurality of serially joined sections, each section formed of a plurality of stacked, planar laminas. The article is initially manufactured in a liner form, and is then formed into an annular form with the end sections disposed adjacent one another. At least one tab associated with one of the end sections is displaced by a forming tool into a corresponding cavity of the other of the end sections to secure the end sections together. In another embodiment, a pair of tabs each associated with one of the end sections are respectively displaced toward one another and into corresponding respective cavities each associated with the other of the end sections to secure the end sections together. | 03-14-2013 |
| 20130062990 | COIL BACK YOKE, CORELESS ELECTROMECHANICAL DEVICE, MOBILE BODY, ROBOT, AND MANUFACTURING METHOD FOR COIL BACK YOKE - A coil back yoke has laminated structure in which a plurality of annular components are stuck together along the axis direction of a cylinder, the annular component is formed of a soft magnetic body and has structure in which a plurality of divided annular components having a shape divided along the circumferential direction of an annular ring are stuck together in an annular shape, and, to prevent joint portions formed in the annular components by sticking together the divided annular components along the circumferential direction of the annular ring from lining up on a straight line parallel to the axis direction of the cylinder, the joint portions of at least a part of the plurality of annular components are stuck together while being shifted along the circumferential direction of the annular ring with respect to the joint portions of the other annular components. | 03-14-2013 |
| 20130134823 | ROTOR FOR ROTARY ELECTRIC MACHINE - A rotor includes a plurality of salient poles, each of which is formed by a plurality of plate members including steel plates that are stacked together, provided extending in a radial direction and around which a coil is wound. The plurality of salient poles has auxiliary salient poles that protrude from the salient poles between two salient poles that are adjacent to one another. The auxiliary salient poles are formed by only a first plate member that is a portion of plate members that forms the salient poles. | 05-30-2013 |
| 20130154434 | STATOR CORE, MANUFACTURING METHOD THEREFOR, AND ROTARY ELECTRIC MACHINE THAT USES THAT STATOR CORE - The method for manufacturing a stator core includes: a punching step in which magnetic segments are punched out of an electromagnetic steel sheet that is coated with an organic insulating coating; a laminating step in which a laminated body is formed by laminating a predetermined number of the punched magnetic segments; a first preheating step in which a welding position on a wall surface of the laminated body is heated locally from a first end to a second end in a direction of lamination to decompose an organic component in the insulating coating thermally at the welding position; and a first welding step in which the welding position at which the organic component in the insulating coating is decomposed thermally is welded from the first end to the second end in the direction of lamination to interconnect and integrate the laminated magnetic segments. | 06-20-2013 |
| 20140062251 | EMBEDDED MAGNET TYPE ELECTRIC MOTOR ROTOR - An embedded magnet type electric motor rotor ( | 03-06-2014 |
| 20140070658 | LAMINATION ASSEMBLY INCLUDING AN INTER-LAMINATION THERMAL TRANSFER MEMBER FOR AN ELECTRIC MACHINE - A lamination assembly having a lamination stack including a plurality of lamination members, and at least one inter-lamination thermal transfer member coupled to at least one of the plurality of lamination members. The at least one inter-lamination thermal transfer member establishes a heat dissipation path from the lamination stack. | 03-13-2014 |
| 20140132107 | METHOD AND APPARATUS FOR PRODUCING CORES FOR ELECTRICAL MACHINES - There is described a method and apparatus for forming a core for an electrical machine, in which a stamped metal strip ( | 05-15-2014 |
| 20140191611 | ROTOR CORE - The invention relates to a magnetic rotor core for an electric rotary machine, including a stack of magnetic laminations having some poles provided with pole tips, said core including a stack that comprises laminations of which at least one of the poles has at least one at least partially truncated pole tip, preferably a single pole tip. | 07-10-2014 |
| 20140252911 | ROTOR ARRANGEMENT FOR AN ELECTRICAL PRIME MOVER AND ELECTRIC PRIME MOVER AND ELECTRIC DRIVE SYSTEM - A rotor arrangement for an electric prime mover ( | 09-11-2014 |
| 20150097461 | Rotating Electrical Machine - A rotary electric machine may include a rotor that includes a laminated core arranged on a rotor shaft, wherein the rotor has at least one end-winding cover that encloses the laminated core in the axial direction of the rotor shaft, and the end-winding cover has an outer face, and a sensor track of a sensor is arranged on the outer face of the end-winding cover. | 04-09-2015 |
| 20160072342 | Systems and Methods for Constructing Laminations for Electric Motors - Systems and methods for the construction of components such as laminations for the stator core of an ESP motor wherein particles of different materials are mixed and pressed together at an elevated temperature to form a composite material in the desired lamination shape. The materials are selected to provide characteristics such as high magnetic permeability from one material and high thermal conductivity from the other material. The particles of the different materials are pressed together at a temperature that is sufficiently high to fuse the particles together and form a composite material, but is also sufficiently low that the materials are not sintered. The individual materials therefore retain their original characteristics, and the composite material benefits from the high magnetic permeability of the first material and the high thermal conductivity of the other material. | 03-10-2016 |
| 20160099615 | LAMINATED IRON CORE AND MANUFACTURING METHOD OF LAMINATED IRON CORE - A laminated iron core includes laminated iron core pieces, in which coupling parts are formed so as to communicate in a lamination direction of the laminated iron core pieces, and the coupling parts are filled with resins. The laminated iron core satisfies the following formula: (T×S)/η>{(4×E×δ×w×t | 04-07-2016 |
| 20160105058 | Generator Motor Wedge With Wide Arm Span and Reduced Stress Levels - A wedge for use in an electric machine has a central leg and arms extending in both circumferential directions. The wedge has a radially outer full surface defining a cylindrical aperture through an axial length, and ledge surfaces at each axial end of the full surface. A curved merging portion on an outer surface of the arms merges into a curved contact surface. A rotor, a machine and a method are also disclosed. | 04-14-2016 |
| 20160121421 | METHOD FOR MANUFACTURING ELECTRICAL STEEL SHEET LAMINATED CORE HAVING REDUCED CORE LOSS AND INCREASED STRENGTH, AND LAMINATED CORE PRODUCED BY THE SAME - There are provided a method for manufacturing an electrical steel sheet laminated core having reduced core loss and improved strength, and a laminated core produced by the manufacturing method. The method includes: stacking electrical steel sheets to obtain a lamination; and welding an outer surface of the lamination, wherein during the welding, a welding wire having a resistivity of 6.5×10 | 05-05-2016 |
| 20160141922 | GENERATOR - Provided is a so-called Lundell-type generator capable of avoiding generation of eddy current in rotor iron-cores without complicated structure. The generator includes a stator, a rotary shaft, first and second rotor iron-cores, and a rotor coil. Each rotor iron-core includes a base and rotor magnetic-pole portions extending axially from the base, the rotor coil disposed on the inside thereof. Each rotor iron-core is formed of a plurality of unit plates stacked axially. The unit plates integrally include respective basal plate portions stacked to form the bases and a plurality of magnetic—pole plate portions stacked to form the rotor magnetic-pole plate portions stacked to form the rotor magnetic-pole portions. | 05-19-2016 |
| 20160203896 | Non-Oriented Electrical Steel Sheet Having High Magnetic Flux Density And Motor | 07-14-2016 |
