Abstract: A high efficiency electric motor has a generally polyhedrally shaped bulk amorphous metal magnetic component in which a plurality of layers of amorphous metal strips are laminated together to form a generally three-dimensional part having the shape of a polyhedron. The bulk amorphous metal magnetic component may include an arcuate surface, and preferably includes two arcuate surfaces that are disposed opposite to each other. The magnetic component is operable at frequencies ranging from between approximately 60 Hz and 20,000 Hz and exhibits (i) a core-loss of less than or approximately equal to 1 watt-per-kilogram of amorphous metal material when operated at a frequency of approximately 60 Hz and at a flux density of approximately 1.4 Tesla (T); (ii) a core-loss of less than or approximately equal to 20 watts-per-kilogram of amorphous metal material when operated at a frequency of approximately 1000 Hz and at a flux density of approximately 1.

Abstract: A brushless DC motor minimizes a chance of dislocation of or damage to an insulator used in the brushless DC motor. Slant portions are provided at end portions of the insulator; therefore, even if a nozzle of a machine for installing a winding should hit the insulator while moving between teeth, the insulator moves in a direction for coming in close contact with a slot aperture, i.e., in a direction substantially at right angles to a direction in which the nozzle moves. This arrangement prevents the insulator from moving by being pushed by the nozzle, making it possible to minimize a chance of occurrence of an insulation failure caused by a damaged or dislocated insulator.

Abstract: This invention provides a rotating electric machine using an inner section of a slot of a stator as a cooling passage and allowing a high cooling efficiency. Furthermore, it provides a manufacture method for the rotating electric machine which allows streamlining of the manufacture of the cooling passage. A plate is attached to the plate retaining groove formed in proximity to the opening of the slot of the stator. A resin layer is formed by injection of resin into a space formed between the outer face of the plate and the mold set on an inner peripheral face of the stator. The plate is pressed by the injection pressure of the resin to come into close contact with the stopper and to create a seal which prevents leakage of resin into the slot.

Abstract: A rotating electric machine using an inner section of a slot of a stator as a cooling passage obtains highly effective cooling performance with a small amount of cooling medium. An opening for a slot in a stator is closed by an under plate having a closing member. A regulating plate is disposed which is a member for regulating the cross-sectional area of the passage in substantially a central section of the slot. In this manner, the cross-sectional area of the cooling passage with the plate in the slot is smaller than the cross-sectional area when the regulating plate is not provided by an area corresponding to the cross-sectional area of the regulating plate. This arrangement allows increases in cooling efficiency.

Abstract: Radial pressure is applied to a turbine generator armature bar using a simple hand held device that can be readily manipulated by a single human operator. A retainer platform has two wedge shaped portions with handles, and by the operator sliding the wedge shaped portions with respect to each other the operative width of the platform may be adjusted, including to slide and lock the platform in a conventional dovetail slot in a stator. An inflatable bladder is positioned on or mounted to the top surface of the platform and is dimensioned so as to apply radial pressure (for example through a filler) to armature bars mounted in the stator. A conduit, preferably having a valve with quick-release actuator in it, extends from the inflatable bladder and connects to a source of gas under pressure.

Abstract: A stator for a high voltage generator has cable windings that are radially inserted into the stator slots. The stator is assembled as the cable windings are laid into the stator slots. The stator slots are left wide open to allow the cable windings and separator bars to be inserted in the slot as the stator is assembled. The open slots have sidewalls that are defined by stator teeth, which extend radially out from a rotor jig in the stator. As each coil section is laid in a slot, a separator bar is inserted over the coil so that another coil section can be laid into the stator. The coils are stacked in a slot and sandwiched between separator bars also in the slot. The separator bar is keyed to the sidewalls of the teeth to provide structural support for the cable windings.

Abstract: An electric rotating machinery is provided with a stator coil support device, which comprises a stator core provided with a slot having an opening, a stator coil installed in the slot of the stator core, a wedge member disposed so as to close the opening of the slot of the stator core, and an elastic plate member inserted between the stator coil and the wedge member. The wedge member is formed so as to have an inclination towards an axial direction of the stator core and the elastic plate member has a structure undulating towards the axial direction.

Abstract: A miniature motor includes: a plurality of magnets serving as stator poles and attached to an inner surface of a motor casing having a closed-bottomed cylindrical shape; a salient-pole rotor having a core mounted on a rotor shaft and windings placed on the core; and a commutator mounted on the rotor shaft. The core includes a center portion having a hole formed therein at the center for engagement with the rotor shaft, a plurality of leg portions extending integrally and radially from the center portion in equal number with the salient poles, and a plurality of wing portions, each extending integrally and symmetrically from an end of each of the leg portions. The core comprises core laminations blanked from sheet steel and assembled together and is formed through deformation of the entire wing portions such that the radius of a circumcircle of the core coincides with a designed final radius of curvature of outer circumferential surfaces of the salient poles of the rotor.

Abstract: A generator armature bar support system includes in a temporary assembly state, an elongated armature bar having a bottom surface, a top surface and a pair of side walls. A spacer is then temporarily located on the top surface of the armature bar; and an elastomer stretched and wound about the armature bar and spacer along substantially the length of the armature bar.

Abstract: An armature (11) for a miniature DC motor constitutes a rotor provided in an interior of a casing and armature windings (10) are wound around an iron core (9) in the form of a coil. In this armature (11), insulators (25, 26) made of paper including at least ordinary paper and having an electric insulation property adhere to at least portions, of both end faces of the iron core (9), on which the armature windings are wound. Thus, the iron core and the armature windings do not come into direct contact with each other.

Abstract: A permanent-magnet electric rotating machine with a concentrated winding stator, including a stator having a plurality of stator magnetic poles formed so as to extend radially from an annular yoke portion of a stator iron core, and windings mounted on the stator magnetic poles; and a rotor having a permanent magnet with a plurality of magnetic poles and rotatably held so as to face the stator through an air gap; wherein each of the stator magnetic poles has a straight shape having a width which is made constant over a whole length, small grooves are formed in each of the stator magnetic poles in symmetrical positions on opposite sides and near a top end portion of the stator magnetic pole, a bottom portion of each slot portion defined by adjacent ones of the stator magnetic poles and the yoke is formed triangularly, each of the stator winding is constituted so that a winding having a predetermined number of turns and winding being formed so as to be fittable to each of the stator magnetic poles is mounted on

Abstract: A generator stator includes a magnetic core having a plurality of axially extending radial slots arranged about the periphery thereof with stator windings in each radial slot. At least one adjustable assembly is located in an axially outermost end of each radial slot, arranged to apply radial force to the windings in the radial slot, the adjustable assembly including mating wedge and slide components which interface along stepped matching surfaces which lie at an acute angle to a center axis of the magnetic core. The assembly is adjustable in situ to compensate for decreases in radial pressure with time while stepped contacting surfaces of the wedge and slide prevent axial regression of the slide.

Abstract: Provided is a rotating electric machine in which the cooling capacity is improved by increasing the width and depth of a gas vent groove 12 formed in a creepage block 11 and in which a fracture is prevented near the face of the creepage block 11 abutting against a magnetic winding 4 of the creepage block 11 fabricated from a resin material containing reinforcing fibers. The reinforcing fibers of the creepage block 11 fabricated from a resin material containing reinforcing fibers are continuously disposed to form straight lines and curved lines along the contour of the gas vent groove, whereby the area of interlayer slip face 32 subjected to a shearing force acting on the creepage block due to a temperature change of a rotor 1 is increased and the shearing force per unit a slip area is decreased, thereby to prevent a shearing slip fracture near the face of the creepage block 11 abutting against the magnetic winding 4.

Abstract: An air ventilation hole provided on a creepage block and an air ventilation hole provided on a rotor winding, and having a different shape than the air ventilation hole provided on the creepage block communicate smoothly with an air ventilation hole provided on the most outer diameter turn of the rotary winding, which is in contact with the creepage block of the rotor winding. Accordingly, the withstand pressure of the creepage block can be maintained fully and also the flow of a cooling air flowing in a radial direction to the rotor winding, the creepage block, and a wedge can be formed smoothly. As a result, the cooling air can be increased and a heat exchange having a good efficiency can be carried out. Accordingly, the cooling performance of the rotor winding can be heightened and the creepage block can be formed with a high reliability against centrifugal force.

Abstract: A generator stator including a magnetic core having a plurality of axially extending radial slots arranged about the periphery thereof with windings in each radial slot; at least one adjustable assembly axially inboard of an outermost end assembly in each radial slot, arranged to restrain the windings in the radial slot, the adjustable assembly comprising mating wedge and slide components which interface along stepped matching surfaces, the wedge component having an elongated slot therein providing access to the slide component. A tool is provided and includes a tool head pivotally secured to a handle. The tool head is formed with a stub adapted to seat in a hole in the slide component via the slot.

Abstract: An electrically conductive enclosure shield is disposed between a rotor enclosure and the rotor winding assemblies. The shield reduces transverse shear loads generated by non-uniform centrifugal radial forces in a generator rotor, while providing adequate electromagnetic shielding for the field winding. Ventilation holes in the shield enable ventilation gas discharge, and shallow ridges may be provided that serve as axial positioning guides for enclosure rings. Additionally, the enclosure shield advantageously adds axial stiffness to the rotor.

Abstract: A stator winding includes a plurality of winding sub-portions in each of which a strand of wire formed from a continuous wire is wound so as to alternately occupy an inner layer and an outer layer in a slot depth direction within slots at intervals of a predetermined number of slots and form a lap winding having two turns in each lap, the strands of wire folding over outside the slots at end surfaces of a stator core, four of the strands of wire constituting the winding sub-portions being housed so as to line up in each of the slots in a slot depth direction, turn portions formed by folding the strands of wire over outside the slots at a first end surface of the stator core being disposed circumferentially to form two rows in a radial direction, and turn portions formed by folding the strands of wire over outside the slots at a second end surface of the stator core being disposed circumferentially to form two layers in an axial direction.

Abstract: A generator stator includes a magnetic core having a plurality of axially extending radial slots arranged about the periphery thereof with stator windings in each radial slot. At least one adjustable assembly is located in an axially outermost end of each radial slot, arranged to apply radial force to the windings in the radial slot, the adjustable assembly including mating wedge and slide components which interface along stepped matching surfaces which lie at an acute angle to a center axis of the magnetic core. The assembly is adjustable in situ to compensate for decreases in radial pressure with time while stepped contacting surfaces of the wedge and slide prevent axial regression of the slide.

Abstract: In an elastic insulating material element for wedging a winding, in particular the stator winding, of an electric machine in the slots provided for this purpose in a laminated body, good mechanical and, at the same time, electric properties are achieved in that the insulating material element (10) has a striplike metal spring core (11) which is surrounded on all sides by a casing (12) made of an insulating material.

Abstract: A permanent magnet electrical rotating machine wherein the slots of stator core 2A of stator 1A are rectangular enclosed slots 4A in which triangular projecting gaps 3a are formed on the inner periphery side of this stator core 2A. The stator core 2A is cooled by passing gas through the projecting gaps 3a. The magnet flux that reaches stator core 2A from permanent magnets 6 by passing through retaining ring 8 and air gap 9 is caused to pass the inner periphery sides of the projecting gaps a of the stator core 2A. By this means, oscillation of magnetic flux density in the peripheral direction is prevented, eddy currents in the retaining ring 8 which accompany this oscillation are reduced and temperature rise prevented.

Abstract: The invention concerns a rotor shaft of a synchronous electric machine with two machined ends parts, framing an electrically active central part having conductors. The active part consists of stacked core disks maintained rigid by rods, the disks having radial notches for the conductors. Invention is applicable to synchronous electric machines.

Abstract: A protective conductor connection for a laminated stator core of an electric motor in which a grounding tongue is stamped into one of two sheet-metal segments that form the fronts of the stator core. A protective conductor is fixedly connected with the grounding tongue. Also provided is a method making the conductor connection.

Abstract: An electrical machine (10), in particular a generator, comprises a rotor (12) with pole zones, in which pole zones amortisseur bars (15) designed as wedges are arranged, which amortisseur bars (15), on the outside of the rotor (12), are pushed into slots (14) provided for this purpose and running in the longitudinal direction and are held in the slots (14) by supporting means (28) against the centrifugal forces occurring during rapid rotation of the rotor (12) and which are connected to one another in an electrically conductive manner at the ends of the rotor (12) by an amortisseur ring (18) or amortisseur segments (17), which enclose the rotor (12) in an annular or ring-section-shaped manner.

Abstract: A generator stator including a magnetic core having a plurality of axially extending radial slots arranged about the periphery thereof with windings in each radial slot; at least one adjustable assembly axially inboard of an outermost end assembly in each radial slot, arranged to restrain the windings in the radial slot, the adjustable assembly comprising mating wedge and slide components which interface along stepped matching surfaces, the wedge component having an elongated slot therein providing access to the slide component. A tool is provided and includes a tool head pivotally secured to a handle. The tool head is formed with a stub adapted to seat in a hole in the slide component via the slot.

Abstract: An armature for a motor has a core, which comprises a plurality of core sheets stacked together in an axial direction. Each sheet has a plurality of teeth having an extended protrusion which covers an armature winding fitted in slots. The extended protrusion may be a pair of bendable long protrusion pieces on each tooth of one sheet, and a pair of bendable short protrusion pieces on each tooth of another sheet stacked adjacently to the one sheet. Alternatively, the extended protrusion may be a pair of long protrusion piece and short protrusion piece on each tooth. The protrusion pieces are bent to cover the armature winding after winding operation, leaving only a narrow slit between the two extended protrusions. The slit is discontinuous in an axial direction of the core. Thus, the armature winding is restricted from slipping out from the slots, and cogging in torque of the motor is reduced.

Abstract: A method for fabricating an induction motor rotor lamination includes using an indexed notching die to punch a plurality of closed rotor slots at different distances from a center point of rotation by punching a first rotor slot, changing the position of a center point of the rotor lamination with respect to the notching die, and punching a second rotor slot. In another embodiment, a plurality of rotor slit patterns are punched using a variable depth indexed notching die including at least two rotor slit punching portions, one being deeper than another, by punching a first rotor slit pattern, changing the depth of closure of the notching die, and punching a second rotor slit pattern with the second rotor slit pattern having a different number of rotor slits than the first.

Abstract: The present invention provides an improved DC electric starter-generator having high starting torque, compact size and weight, increased efficiency and reliability, and being particularly suitable for a starter-generator for aircraft engines but also suitable for other applications. The DC electric starter-generator has a rotor assembly including a rotor core having a cross-sectional silhouette formed by a hub having preferably one of four and six appendages extending radially from the hub. Each appendage includes a flanged formation having an outer edge which is formed to obtain a desired commutation current wave form. The DC electric starter-generator further includes a stator assembly with a plurality of stator slots, each of which include at least two phase windings which are wound in a direction opposite each other to substantially reduce the effects of counter e.m.f. during operation.

Abstract: A switched reluctance motor having a rotor and a stator is disclosed. The stator has a plurality of peripherally spaced stator poles, each being defined by an inner curvilinear face, which is generally aligned with the curvilinear faces of adjacent stator poles in a circumferential path. A plurality of stator inserts are also provided that are disposed between adjacently spaced stator poles. Each stator insert has a curvilinear face that is generally aligned in the same circumferential path with the curvilinear faces of adjacently spaced stator poles to reduce siren noise. Each stator insert is also constructed to include at least one pocket opposite its curvilinear face for receiving a magnet to facilitate positioning of the rotor relative to the stator poles. Each stator insert is further provided with oppositely extending arms for receiving and mounting a pre-wound stator coil or “wound-in-place” coils.

Abstract: A rotor for use in an electric machine and a rotary electric machine utilizing such a rotor, the rotor comprising a rotor body provided with a plurality of slots, each slot housing electrical conductors of two independent rotor coils, the conductors being secured in position by an outer wedge member, an inner wedge member being located between the outer wedge member and the conductors, the rotor including pole tips defining load bearing lips located adjacent the radially outer edges of each slot, wherein a part of each coil projects beyond the respective lips in a direction perpendicular to the axis of the coil.

Abstract: In manufacturing the iron core of a divided stator, a plurality of pole pieces with fitting portions formed on both sides of pole portions are laminated and fixed to one another. A plurality of the pole piece laminates are arranged in the form of a ring and the outer or inner circumference is held with a jig. A non-magnetic and high-rigidity connecting member is press-fit in the laminating direction into fitting portions of a plurality of adjacent pole piece laminates, thereby a plurality of adjacent pole piece laminates are positioned with high accuracy and rigidly connected to one another.

Abstract: A method and associated apparatus (10) are provided for tightening slot wedges (32, 36) of a generator rotor. The method preferably includes the steps of positioning an electrically-conductive slot tightening member (25) within a recess (20) formed in at least one slot filler member (12, 16) positioned within a rotor slot (18) and positioning at least two end portions of electrically-conductive slot wedges (32, 36) to overlie the recess (20) and abuttingly contact at least portions of the slot tightening member (25) so that an electrically-conductive path is provided from one of the at least two end portions of the slot wedges (32, 36), through the slot tightening member (25), and to another one of the at least two end portions of the slot wedges (32, 36). The apparatus (10) preferably includes at least one slot filler member (12) for positioning within a rotor slot (18). The at least one slot filler member (12) has a recess (20) formed therein.

Abstract: A rotor for an electric machine, the rotor comprising: a rotor body having a plurality of axially extending, circumferentially spaced slots therein; at least one winding conductor disposed in each said slot; and a retainer located in each said slot radially outwardly of the or each said winding conductor for limiting radial outward movement of the or each winding conductor; wherein each retainer has a radially inwardly directed surface configured so as to locate the or each winding conductor in a predetermined position in its respective slot. The invention further resides in a retainer and in a method of manufacturing a rotor.

Abstract: A dynamoelectric device utilizes retaining members to prevent the windings from migrating into the air-gap between the stator and the rotor. The retaining members used in the device are axially self-locking, thereby preventing undesired axial translation of the retaining members during severe operating conditions of the dynamoelectric device.

Abstract: A seal for a generator stator end winding seals the gap between the annular air shield and a radially inner surface of the stator end winding. The seal includes a first flat piece layer formed of a flexible rubber material and having an inner diameter side and an outer diameter side. A plurality of first radial slits are formed across the outer diameter side. A second flat piece layer is disposed in a layered configuration with the first flat piece layer. The second flat piece layer is formed of the same flexible rubber material. A plurality of second radial slits are formed across the outer diameter side of the second flat piece layer and are offset from the first radial slits in the layered configuration. The seal is secured in a radial groove formed in an end of the air shield by a locking dowel and/or glue. With this arrangement, a reliable seal is configured that is inexpensive to manufacture and easy to install.

Abstract: A stator wedge (30) to position in a coil slot (40) for retaining coils (40) of a stator of a power generator and methods of forming the wedge (30) are provided. The stator wedge (30) preferably includes an elongate, non-conductive, and substantially rigid body member (36). The body member (36) preferably includes a relatively flat bottom surface (35) and a relatively flat top surface (33). The top surface (33) preferably has less surface area than the bottom surface (35). The body member (36) also includes at least a pair of side peripheries sloping upwardly from peripheries of the bottom surface (35) having a greater surface area to peripheries of the top surface (33) having a lesser surface area to thereby define at least a pair of angled sides (31, 37). A thin-film, abrasion-resistant, non-conductive coating layer (32) is formed on upper surfaces of at least the pair of angled sides (31, 37).

Abstract: An electrical generator having a keyway for a retaining ring key formed in only the pole portion of the rotor and not in the tooth region of the rotor, and a method of repairing an electrical generator by forming such a keyway. The present invention lengthens the operating life of the rotor by eliminating a stress-concentrating discontinuity and by reducing the loads in the highly stressed tooth region of the rotor.

Abstract: In the case of an electrical machine which has in its laminated stator core (10) slots which comprise winding slots (1) and preliminary slots (2), the winding bars (3, 4) which are embedded in the winding slot (1) are fixed by means of a slot sealing arrangement (8), which slot sealing arrangement (8) also has a double function of sealing the preliminary slot (2) from an air gap (12) of the machine. The slot sealing arrangement (8), which is formed essentially from an upper wedge (5), a lower wedge (6) and a wedge attachment (7), forms, together with the slot walls (13a, 13b) which bound the preliminary slot (2), flow channels (2a) for a gaseous cooling medium for cooling the teeth (15) of the laminated stator core (10).

Abstract: A winding wedge retention system designed to maintain coil form includes a rotor (21) having a plurality of rotor poles (24), a coil (20) wound on one of the rotor poles (24), a V-shaped support wedge (22) positioned between adjacent rotor poles (24, 24) and that is adapted to support the coil (20), and a second wedge (26) that is positioned between and adjacent to the coil (20) and the rotor pole (24) on which the coil (20) is wound. The second wedge (26), in the presence of centrifugal loads, maintains a constant shape of the coil (20) and also maintains a constant position of the coil (20) relative to a position of the support wedge (22).

Abstract: A system and a method for forming, storing and loading slot cell insulators into slots in a stator core of a dynamoelectric machine. The system includes a forming assembly for forming slot cell insulators and a loading assembly for storing the insulators and loading the insulators into the stator core. The system also includes a transfer mechanism for moving the insulators from the forming assembly into the loading assembly. In the process, these elements cooperate to align end portions of the insulators before they are inserted into the stator core, thereby improving the efficiency of the loading procedure. When the stator core is ready to receive the insulators, the loading assembly simultaneously loads all of the insulators into the stator core.

Abstract: A pole cap insulator is used in a field assembly of a motor having a cylindrical motor frame where the field assembly includes a winding having a central opening therein, and a pole member having a base portion with side surfaces and top and bottom surfaces. The pole cap insulator includes a generally rectangular body portion having a back edge disposed proximal the motor frame, and side boundaries disposed opposite each other. The body portion has a radially inwardly facing edge disposed opposite the back edge and tapered tip portions outwardly extending from opposite side boundaries cooperating with the radially inwardly facing edge to form a curved edge corresponding to a curved contour of the pole member.

Abstract: A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

Abstract: A canned motor has a rotor having a rotor core and a rotor can covering an outer circumferential surface of the rotor core, and a stator disposed around the rotor with a gap left therebetween for rotating the rotor, the stator having a stator core and a stator can covering an inner circumferential surface of the stator core. The stator core has a plurality of slots defined therein at circumferentially spaced regular intervals and having respective open ends opening at the inner circumferential surface of the stator core, and a plurality of windings disposed in the slots, respectively. The slots include respective winding chambers with the windings housed therein, respective constricted throats disposed radially inwardly of the winding chambers, and respective stiffener chambers spaced radially inwardly from the constricted throats. A plurality of stiffeners are housed in the stiffener chambers, respectively.

Abstract: A V-block with a preselected shape defining a preselected included angle between a pair of V-block side portions is connected to a laminated spider of a rotor at preselected location between spaced apart adjacent poles of the rotor by disposing an elongated connecting piece in a slot longitudinally disposed in the spider and connecting the elongated connecting piece to the V-block by a fastener. Applying a preselected torque to the fastener establishes a predetermined force between the V-block and the conductive windings disposed about adjacent poles. The V-block arrangement is particularly suited for use in a dynamo-electric machine.

Abstract: A process for fabricating a stator for an electric machine having a tubular unslotted ferromagnetic flux collector ring (16) and stator winding coils (18, 19, 20) with two legs which extend substantially axially along the inner cylindrical surface of the flux collector ring (16). Each winding coil leg is confined within an envelope (22) of a thin, flexible, non-conductive non-magnetizable material which is impregnated with and bonded to the next legs as well as to the flux collector ring (16) by a hot-setting resinous material.

Abstract: A dynamoelectric machine includes a stator having a stator core. A winding is provided on the stator core and the stator core has a stator bore. A rotor including a rotor core is received in the stator bore. A permanent magnet is mounted on the rotor core periphery and a rotor shaft is mounted on the rotor core. Bearing means are provided for supporting the rotor shaft for rotation relative to the stator. A first circuit board having electrical components thereon is used in operating the dynamoelectric machine, and a second circuit board having an electrical component in the form of a sensing device thereon is used in determining the position of the rotor. The first circuit board is constructed for mounting the second circuit board thereon so that the second circuit board projects axially inwardly from the first circuit board and the sensing device is disposed in an axial position overlapping the axial position of the permanent magnet.

Abstract: Winding holding means 8 for retaining windings 6 are respectively provided at axially opposite end portions of each pole protrusion 5 of a stator on the inner peripheral side of the pole protrusions.

Abstract: An end turn arrangement for turns in a rotor where individual windings are stacked in tapered radial slots in the rotor, with successive turns having a smaller width in a radial inward direction, the end turns of the individual turns of each stack being vertically aligned along a common edge. The end turns are separated by blocking separators, each including a first anchor component having a first planar exterior surface and a second planar interior engagement surface; and a second slide component having a first non-planar exterior surface and a second planar interior engagement surface; the anchor and slide components having mating guide elements permitting the anchor and slide components to move relative to each other along a straight assembly path.

Abstract: An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing conductive windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is equipped with electrostatic shield arrangements in the winding slots and coilheads to reduce capacitive coupling between the stator and rotor during operation.

Abstract: After a coil 24 is wound through an open slot 26 which forms a sufficient space for the winding operation of an armature core 10, a magnetic member 34 is inserted and mounted into the open slot 26 and is then engaged with and fixed to the umbrella portions 20 of the armature core 10. A gap 36 formed in the central portion of the open slot 26 operates to narrow a gap between the magnetic poles of mutually adjoining salient poles 16, which reduces not only the generation of cogging phenomena and vibrations but also variations in quality between products, that is, the armature cores 10 produced.

Abstract: Disclosed is an insulated bobbin for stator which has good insertability of a stator iron core with no reduction of coil winding space.A first bobbin and a second bobbin each comprise a bobbin inner rim wall, provided along an outer rim face of an iron core main body, and a projections projecting from the bobbin inner rim wall in the diameter direction in correspondence with a plurality of projecting poles, each projection being U-shaped in cross-section with an opening on the division side, and a pair of side walls of the projections being of different height in the central axial direction so that a step is created by their edges.