Abstract: A V-block assembly for an electrical machine having a rotor with a spider and poles disposed in a circular array around the spider and conductive windings encircling the poles comprising a dovetail groove in the spider between adjacent poles and a plurality of V-blocks each comprising a pair of flat bars having one end abutting, the abutting end being formed to fit the dovetail, the flat bars being bent outwardly to form a V and a jack screw fastened between the flat bars adjacent the open end to press the bars against the windings of adjacent poles to prevent the windings from moving laterally and radially outward as the rotor rotates.

Abstract: A high inertia inductor-alternator energy storage device provides backup energy in a simple, compact device. The inductor-alternator stores an acceptable level of energy via an improved rotor that provides a high level of rotational inertia. The improved rotor can be manufactured at a reduced cost due to reduced milling requirements. Moreover, the inductor-alternators of the present invention have reduced complexity and increased reliability as a result of the geometry of the improved rotor.

Abstract: A creepage block for a turbine rotor slot in which coil windings are embedded, wherein the creepage block is sandwiched between the windings and a wedge block, and wherein aligned radial cooling passages are formed in axially spaced locations in the windings and the wedge block. The creepage block includes a pair of solid half blocks in substantially parallel relationship, the blocks held in laterally spaced relation by a plurality of discrete spacers which may be dowel pins.

Abstract: The asynchronous discoidal electric motor has stator (1A, 1B) windings (13) and radial rotor bars (2) embedded in notches (11, 22) opened by a very narrow slit (11, 21). These slits (11, 21) and notches (12, 22) may be machined electrochemically using a wire. Application to asynchronous discoidal electric motors with winding embedded in the stator and with a cartwheel structure on the rotor.

Abstract: A dynamoelectric machine rotor comprising a rotary shaft; a field core member engaged with the rotary shaft; a field coil wound on the field core member through a bobbin; and an outer circumferential tape which is wound on an outer circumference of the field coil to prevent the field coil from unwinding; wherein the outer circumferential tape includes a substrate sheet which is provided with at least one of a recess and a projection.

Abstract: In the stage of winding a drive coil (17) on salient poles (114) in the assembling of a motor (1), the opening width of an armature core (11) is wide enough to allow easy and proper winding of the drive coil (17). After the winding of the drive coil (17), opening-width adjusting members (50A) are put within open slots (100), to thereby reduce the opening width of the armature core (11) at the flux gathering parts (54A) and (55A) of the opening-width adjusting member (50A). The opening-width adjusting member (50A) is positioned and fixed, by its elasticity, within each open slot.

Abstract: A dynamoelectric machine having a rotor constructed to facilitate position sensing and a stator constructed to retain slot liners in the stator while reducing flux leakage between adjacent teeth of the stator. The rotor includes permanent magnets which project beyond one axial end of the rotor and the stator. Thus, a position sensor may be positioned in registration with the overhanging portion of the magnet. Slots in the stator are shaped to hold an insulating slot liner in the slot, and prevent the liner from slipping into the stator bore. The slots are also angularly formed near their inner ends to increase the space between adjacent stator teeth for reducing the flux leakage between the teeth.

Abstract: An electrical machine such as a switched reluctance motor includes a stator including a stator body, a plurality of poles each having an energizing coil, and a rotor. Portions of the coils are retained in channels between adjacent poles and by a wedge tied at each end to projections extending from the stator body. The manner of retaining the wedge avoids disturbance of the flux linkage in the stator poles and allows improved locating and retaining of the coils in the channels between stator poles.

Abstract: An electric rotating machine is constructed by an armature core including slots, upper coil trunks and lower coil trunks housed within the slots of the armature core, lower coil arms electrically connected at one end parts of the lower coil trunks, respectively disposed generally perpendicularly to the shaft, and upper coil arms electrically connected at one end parts to the upper coil trunks, respectively disposed generally perpendicularly to the shaft, and connected at the other end parts to the other end parts of the lower coil arms respectively. An insulating film for the upper coil trunk is made of an inorganic material having a higher heat resistance than an insulating film for the lower coil trunk and the insulating film for the upper coil trunk is thicker than the insulating film for the lower coil trunk. The slot has a circumferentially widened portion for housing the upper coil trunk and its insulating film.

Abstract: A generator rotor that reduces friction force transmitted to rotor teeth by a retaining ring is disclosed. The friction force is caused by end windings pushing longitudinally outward against the retaining ring when the windings heat up during operation of the rotor. A ring key diminishes the friction force transmitted to a rotor teeth region by transmitting more of the friction force to a rotor pole region. The present invention accomplishes this reduction in transmission by either forming a gap between the ring key and the teeth regions, by producing only light contact between the ring key and the teeth regions, by the ring key being formed of a lower stiffness material in the areas in which it contacts the teeth regions, or by a combination of the above.

Abstract: A rotary machine having a stator with a stator bore designed for accommodating a jacket. The stator comprises coils retained in notches and notch closing shims, wherein elastic members are provided between the coils and the shims. The shims protrude from the bore and the jacket is retained elastically in the bore by the pressure exerted on the jacket by the shims.

Abstract: A process is disclosed for fastening windings in a permanent and reliable manner without reducing the cooling cross-sections. Doses of an electroconductive elastomer are introduced for that purpose approximately in the middle of the partial bundle of lamination, on the top of the bar and/or on intermediate pieces. The elastomer material (9) is pushed upwards when the bottom bars (3) are pressed in or flows towards the middle of the conductive bar when the intermediate pieces (7) are laid in. No elastomer flows into the core ducts (10) of the partial bundles of laminations (11), so that the cooling cross-section is not narrowed. It thus becomes possible for the first time to glue the winding to the bundle of laminations in an elastic and stress-free manner. The main advantage however is that the dosed introduction of elastomer does not reduce the core ducts nor their cross-section.

Abstract: Damaging shaft voltages in an induction motor are prevented by an electrostatic shield between the stator winding structure and the rotor structure. The electrostatic shield is held at the same potential as the grounded motor frame. The shield includes an aluminum strip in each winding slot, with one strip in firm engagement with the stator core. The strips are flat strips and extend beyond both ends of the slot to the outer end turns of the stator winding. This places that one strip at the ground reference potential of the motor frame. All strips are connected to the one grounded strip by an end ring. All others are insulated from the core. The strips are connected at only one end to avoid a squirrel cage winding affect.

Abstract: An electrostatic shielding system is provided for an AC motor to eliminate generation of destructive motor bearing currents. Conductive end turn shields are layered over the stator coil end turns at each end of the stator. Conductive grounding clips mechanically and electrically engage the end turn shields at one end of the clip, and electrically and mechanically engage the slotted openings in the stator at the other end. Conductive strips extend longitudinally along the stator slotted openings.

Abstract: In order to realize a permanent magnet dynamo electric machine which permits a high speed of rotation, the permanent magnet dynamo electric machine includes a stator 20 having a stator iron core 22 in which a stator winding 24 is wound, and a rotor 30 facing the inner circumference of the stator 20 and rotatably supported thereby, the rotor 30 having a rotor iron core 32 and a plurality of permanent magnets 36 arranged inside the rotor iron core 32 so as to face the stator iron core 22, wherein the rotor iron core 32 is provided with the same number of permanent magnet insertion holes 34 as the number of permanent magnets 36 for receiving the same at positions where the ratio R1/R0 is equal to or more than 0.85, wherein R0 is the radius of the rotor 30 and R1 is the radius of an imaginary circle drawn by inscribing the faces of the plurality of permanent magnets 36 at the side remote from the stator 20.

Abstract: A permanent magnet type rotating machine includes a stator core provided on an inner periphery thereof with armature windings, a rotor core, a plurality of permanent magnets arranged on an outer periphery of the rotor core, and a magnetic ring arranged between the permanent magnets and a stator. The magnetic flux running from the permanent magnets to the stator core through a gap, can be increased by a reduction in magnetic reluctance due to the magnetic ring inserted between the gap and the permanent magnets. The magnetic ring is fitted on either one of the outer peripheries of the permanent magnets and the inner periphery of the stator core.

Abstract: In the method for producing conductor bars for dynamoelectric machines, the conductor bars are inserted, with a main insulation (4), applied when dry, into a pressing device with the interposition of a separating film, are pressed to size in said pressing device and, together with the pressing device, are impregnated with impregnating resin in an impregnating vessel and cured.In order to increase the dimensional accuracy of the conductor bars and to simplify the production method, the dry-insulated conductor bars are inserted (10, 11) individually into a pressing device which is adapted to the bar shape and surrounds the conductor bar over its entire length and circumference and are pressed to the final dimension in said pressing device. Subsequently, a plurality of conductor bars thus prepared are inserted together with the associated pressing device into the impregnating vessel and impregnated there with impregnating resin.

Abstract: An improved switched reluctance motor (1) has a stator assembly (3) and a rotor assembly (5) mounted for rotation relative to the stator assembly. A stator (9) has a plurality of stator teeth (11) defining stator slots (17) therebetween. Stator winding sets (19, 21) include coils inserted in the slots in concatenated pattern in which one part of a coil is inserted in one stator slot and another part of the coil is inserted in the adjacent stator slot. The part of one coil (19a) inserted in a slot is positioned adjacent an inner end of the slot, and a part of a coil (21a) of the second winding set is inserted in the slot toward the outer end of the slot. A wedge (25) is inserted in each slot after the concatenated sets of windings are installed therein. Each wedge is sized to fit in the outer end of a slot and extends the length of the slot. The wedge has a curved outer surface (27) which generally corresponds to the curvature of the end of the teeth adjacent the rotor assembly.

Abstract: An insulating member (10), which is disposed in each of slots (20) in a stator core (16) of a motor in order to insulate electrically the core (16) and windings (22) set in the slots (20), comprises a main insulating section 30, which covers the inner wall surface of the slot (20), and auxiliary insulating sections (32) having desired flexibility and flexural repulsiveness to substantially close and opening (26) of the slot. The auxiliary insulating sections (32) are easily deformed to allow the slot opening (26) to open partially when it is subjected to an external force, and are restored to their original state such that the opening (26) is closed when the external force is removed.

Abstract: An upper coil bar and lower coil bar are disposed in slots of an armature core. The upper coil bars have upper coil-end sections which extend radially from the outer periphery of the armature core and together from a commutator surface with which a brush member is in contact. The upper coil-end sections and coil-end sections of the lower coil bars are retained by a fixing cap fixed between a shaft of the rotary electric machine and the upper coil-end sections, and also by a spacer disposed between the upper coil-end sections and the lower coil-end sections so that the commutator surface can be maintained smooth even under conditions of thermal expansion or high-speed operation.

Abstract: A flywheel energy conversion device provides highly efficient conversion between kinetic and electrical energy. The flywheel produces increased output by providing armature coils in an air gap formed about the flywheel (both radial and axial embodiments are described). In preferred embodiments, field coils of a magnetic circuit are energized with DC drive current that creates homopolar flux within a rotating solid rotor having teeth cut from a flat disk. The total reluctance of the magnetic circuit and total flux remain substantially constant as the rotor rotates. The flux may travel radially outward and exit the flat disk through the teeth passing across an armature air gap. Airgap armature coils are preferably utilized in which the changing flux density (due to the rotating teeth) induces an output voltage in the coils.

Abstract: An electric machine having a stator winding which is impregnated by total immersion. The bar ends of the stator winding have soldering lugs which are insulated from one another and with respect to grounded housing parts. In order to simplify the assembly of the soldering lug insulation and at the same time to improve heat transfer, the soldering lugs are surrounded on all sides by a deformable insulating material with is pervious to impregnating resin. The insulating material is fixed by means of a shrinkable fabric which is likewise pervious to the impregnating resin. The insulation and shrinkable fabric are impregnated and cured at the same time as the winding insulation.

Abstract: A stator for an electric machine comprises a tubular unslotted ferromagnetic flux collector ring (16) and stator winding coils (18, 19, 20) having 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 stator insulating bobbin is disclosed including a plurality of insulating elements. These insulating elements are configured and dimensioned to substantially enclose and insulate an inner surface of a stator assembly. Each of the insulating elements includes a first flange portion and a second flange portion joined by an intermediate web portion.

Abstract: An electromagnetic bearing includes a canning arrangement (30, FIG. 2) for separating stator coils 33 from a suspension gap 21 containing gas at high pressure. The canning arrangement comprises a bridging member 38.sub.1 . . . in each cell slot 31.sub.1, 32.sub.2 . . . supported on notches 37 cut from the edges of bounding pole pieces 31.sub.1, 32.sub.2 . . . , the surface of which bridging member facing the rotor comprises a support face set radially outwardly of the pole faces. A thin, deformable can member 40 is supported on the pole faces and deforms outwardly in response to pressure difference between suspension gap and coil slot into contact with the bridging members and locates the can member and bridging members. The can and bridging members may be formed of stainless steel and deformation may be plastic.

Abstract: A rotor for a dynamo-electric machine has a V-shaped groove for providing a fast gas stream with an outward speed component in the radial direction, the V-shaped groove being provided on the upstream side of the fast gas stream at an opening of a wedge exhaust hole. The dynamo-electric machine also has a sloping surface which is inclined with respect to the radial direction so that the exhaust stream coming out of the wedge exhaust hole is led in the direction of the fast gas stream, the sloping surface being provided on the downstream side of the fast gas stream at the wedge exhaust hole. This structure permits a smaller angle of the mergence of the fast gas stream and the exhaust stream and it accordingly reduces the pressure loss in the coolant gas at the outlet of the wedge exhaust hole, thus achieving reduced loss in the fan power. The result is higher operating efficiency of the rotor.

Abstract: An apparatus reducing capacitive coupling between the stator and the rotor of an electromagnetic machine. The apparatus includes an electrically connective shield positionable between the stator and the rotor, the shield electrically separated from both the stator windings and the rotor when so positioned. A grounder electrically connects the shielder to ground thus substantially reducing capacitive coupling between the stator and the rotor.

Abstract: A magnetic top stick for use at the opening portion of a core slot of an electromagnetic device includes a group of magnetically anisotropic members arranged in a substantially non-magnetic body adapted to fit snugly within the core slot. The magnetic properties of the group of members combine to provide the top stick with an overall high magnetic permeability in the depth direction of the core slot and overall low magnetic permeabilities in the width and longitudinal directions of the core slot. A convenient method of manufacturing the top stick includes first forming magnetically anisotropic sheets by cold rolling and annealing, then laminating and heat processing the sheets with B stage materials to generate a unitary laminated structure. The unitary laminated structure is sectioned into multiple magnetic flux bars which are in turn disposed in the non-magnetic body forming the top stick.

Abstract: A stator lamination for an electric motor includes a plurality of notches extending about an inner periphery thereof shaped to minimize damage to insulation of the conductor during insertion of the conductor into the notches and removal of the conductor from the notches. Each notch includes two side walls which intersect the inner periphery of the laminate at a tapered angle. The side walls each include a cutout shaped to receive a retaining strip or slat therebetween, and the cutouts intersect the walls at tapered angles. The tapered angles are preferably less than about 12.degree. or greater than about 14.degree., in order to prevent the formation of a locking taper.

Abstract: An arrangement for sealing the slots, which are filled with conductor bars or coils, in the laminated stator core of an electrical machine by use of slot sealing elements includes an upper prismatic body, on whose underneath a surface runs in an inclined manner, and a lower prismatic body. The upper surface, facing the upper body, runs inclined in the opposite direction to the gradient of the lower surface of the upper body, and actual wedging is effected by relative displacement of the two prismatic bodies with respect to one another.In order to be able to utilize the elasticity of the upper body in the transverse direction in an optimum manner, the force is introduced from the conductor bar or coil to the upper prismatic body, essentially only in its central section, over its entire length. As a consequence, relatively large spring movements in the radial direction are available which, for their part, can compensate better for a seating phenomena in the winding structure.

Abstract: A method of forming a crepe paper insulated superconducting magnet coil with fifty percent overlap crepe paper wrapping with the paper wound superconductor subsequently wound into a coil on a coil form pocket using the crepe paper wrap as an insulating and friction reducing component.

Abstract: Electrically-conductive, segmental, slot wedges, with electrically-conductive inserts therebetween, and electrically-conductive interconnects, between end ones of the wedges and the annular, end retaining ring, of a rotor, define an amortisseur winding for the rotor. The inserts are spring-loaded in end slots formed in the wedges, and in an embodiment of the invention, are formed of beryllium copper and are silver-plated. As is typical of rotors in electrical, rotating equipment, the slot wedges are formed of aluminum.

Abstract: A system for supporting a retaining ring on an end of body portion of a rotor in an electrodynamic system includes an end wedge which is adapted to be in contact with a retaining ring, a damper bar having a first surface which abuts the end wedge member and a second, oppositely facing surface; and a filler block positioned between the second surface of the damper bar and a field winding portion of a rotor. The filler block has a tapered surface which defines a stress-reducing gap between the field winding portion and the retaining ring, so as to minimize stress in the slot cell and field windings during high-speed rotation of the rotor.

Abstract: A wedge and spring assembly for use in electromagnets or dynamoelectric machines having a housing with an axis therethrough and a plurality of coils supported on salient poles that extend radially inward from the housing toward the housing axis to define a plurality of interpole spaces. The wedge and spring assembly includes a nonmagnetic retainer spring and a nonmagnetic wedge. The retainer spring is formed to fit into one of the interpole spaces, and has juxtaposed ends defining between them a slit extending in a direction generally parallel to the housing axis. The wedge for insertion into the slit provides an outwardly directed force on respective portions of the juxtaposed ends to expand the slit so that respective portions of the retainer spring engage areas of the coils adjacent thereto, thereby resiliently holding the coils against their respective salient poles. The retainer spring is generally triangular shaped to fit within the interpole space, and the wedge is generally T-shaped.

Abstract: A switched reluctance starter/generator is presented which has a stator mounted within a housing having an outer periphery and a plurality of salient poles defining an inner periphery, the salient poles further defining slots therebetween. A stator cooling sleeve is press fit on the outer periphery of the stator and defines a plurality of cooling channels between the outer periphery of the stator cooling sleeve and the housing. A plurality of phase windings are wound on the plurality of salient stator poles, and phase winding retainers are positioned within the slots for securing the phase windings on the salient stator poles. The winding retainers comprise a triangular base separator, a quasi-dove-tailed retaining member, and two opposing wedge shaped expanders. A rotor assembly is rotatably positioned within the stator, and comprises a hollow shaft assembly and a rotor core having a plurality of salient poles press fit on the outer periphery of the shaft.

Abstract: The winding overhang support of a turbo-generator comprises an inner ring (12) which fits closely, either directly or with the insertion of an interlayer (14), against the ends of the turns of the stator winding (4, 5), which ends widen like an internal taper, and a multipart external support comprising rings (9, 27) and supporting brackets (7). The supporting brackets (7) are attached to the end of the stator core end plate (3) of the laminated core. The first outer ring (9), which is composed of insulating material, fits closely against the outside of the free ends of the supporting brackets (7). The second outer ring (27) is manufactured from high-strength nonmagnetic steel and is supported on a shoulder (26) on the stator core end plate (3) and is attached to the supporting brackets (7). There are double-wedge clamps (16, 17, 20) between the inward-facing surfaces (18, 19) of the supporting brackets (7) and the ends of the turns.

Abstract: A rotor of a turbogenerator having direct gas cooling of an excitation winding conductor. An insulating strip is provided between a slot base and the excitation winding conductor. A resiliently elastic intermediate layer, which may be in a form of a corrugated spring, is provided between the insulating strip and the excitation winding conductor in order to compensate for seating phenomena of the excitation winding. This corrugated spring extends in a direction of the rotor body center, originating from the body end. In order to fix this corrugated spring axially without the cross section of the keyway being constricted, the corrugated spring has a pair of projections which point downwards and engage in lateral recesses in the insulating strip.

Abstract: An improved armature assembly includes an armature stack mounted coaxially with a rotatable shaft. Conductive windings are disposed in the armature stack in accordance with a preselected winding sequence. The conductive windings include end turns which extend longitudinally beyond the armature stack. End plates are disposed at opposing ends of the armature stack. Each end plate includes an integral banding ring in the form of a retaining flange located radially outwardly of, and in a supporting relation to, the end turns. Each end band further includes a centrally located aperture which is adapted to receive the rotatable shaft and maintain concentricity of between end plate, the armature stack and the rotatable shaft.

Abstract: The rotor 2 of a rotating field type turbine generator is provided with slots 3 for accommodating the field windings, wedges 4 positioned at the portions of the magnetic poles on the rotor 2 for holding the field windings and wedges 5 positioned between the magnetic poles on the rotor. These wedges 4 and 5 are constituted by metal bars without joints to enhance damper effect thereby. Magnetomotive forces due to higher harmonics, which causes temperature rise of the rotor 2 and torque ripple during starting with thyristors, induces an elliptic rotating magnetic field having the longer diameter on d axis extending in the direction of magnetomotive force induced by the field windings and the shorter diameter on q axis perpendicular to d axis, and thus a larger eddy current is induced flowing along q axis on the rotor 2 than that flowing along d axis.

Abstract: The rotor for a dynamo electric machine serving as a synchronous generator as well as being designed operable as a variable speed motor for starting a prime mover for the synchronous generator, the rotor (1) comprising a rotor core (2), a plurality of slots (4) disposed around the circumference of the rotor core (2) and extending along the axial direction of the rotor core (2), rotor windings (3) being accommodated in the slots (4) and wedges (6) being accommodated in the slots (4) over the rotor windings (3) near at the surface of the rotor core (2) for preventing the rotor windings (3) from being pushed out due to a centrifugal force caused by rotation of the rotor (1), wherein wedges (6) where an eddy current flows are formed by Cu-0.05.about.4 wt % Zr-0.3.about.5 wt % Ni-0.2.about.1.5 wt % Si having a 0.2% proof stress equal to or more than about 20 Kg/mm.sup.

Abstract: In a dynamoelectric generator, a low-resistance electrical contact is provided by using a spring below the rotor slot wedges to bias the wedges against the overlapping retaining rings. This biased contact between the wedges and retaining rings forms a conductive current path for high-frequency eddy currents induced on the surface of the rotor and retaining rings at all operating speeds and at rotor standstill. In addition, the spring reduces gauling between the rotor key slots, wedges and retaining ring.

Abstract: A stator core for supporting an electrical coil includes a plurality of groups of circumferentially abutting flat laminations which collectively form a bore and perimeter. A plurality of wedges are interposed between the groups, with each wedge having an inner edge and a thicker outer edge. The wedge outer edges abut adjacent ones of the groups to provide a continuous path around the perimeter.

Abstract: A wedge assembly for use in retaining a conductive winding in the core slot of a dynamoelectric machine including a conformable hose positioned within the core slot and cooperable with the conductive winding. The conformable hose is useful in minimizing movement of the conductive winding during operation of the dynamoelectric machine by filling gaps caused during the assembly process. The conformable hose may be filled with a resinous material under pressure and may be further looped over the end of and attached to the top of the slot wedge for use in retaining optionally used wedge locks.

Abstract: The armature (1) for high-speed electric motors force-ventilated in air containing abrasive dust, in particular in electric tools including right angle grinders, has windings which are laid in slots (7) of an armature laminate stack (5), and are held down in the slots (7) by elongated, elastic slot seals (15), and forth winding overhangs (9, 11) on the end faces of the armature. To increase the strength of the armature winding, the resistance to cooling air containing abrasive dust, and to improve the cooling, the slot seals (15) project over the slots (7), follow the contour of the winding overhangs (9, 11), in particular along surface lines, in the armature longitudinal direction, extend up to the end faces of the armature (1), and their ends are secured there by a ring (19) or cord winding (17).

Abstract: Two coil windings per slot are disposed in a dynamoelectric machine rotor. The coil winding conductors are stacked on the sides of the rotor slots with the central coil sides separated by a plurality of insulating spacers driven between them in a radial direction and with the spacers distributed in the axial direction along the rotor slots such that radial ventilating passages are formed by the sides of the spacers and coil conductors. Coolant gases enter the slots axially below the coils and progress radially through the ventilating passages as well as the slot creepage block and wedge and discharges from the rotor into the stator-rotor air gap.

Abstract: A constrained ripple spring assembly 26 is disposed in the radial slots 12 of a dynamoelectric machine and radially between the windings 14 and the wedges 20 maintaining the windings in the slots. The ripple springs 28 are adhesively secured to flat surfaces, for example, the underside of the wedges or one or two filler strips 30, 32, such that the spring assemblies are substantially flat upon insertion. At a predetermined elevated temperature, the adhesive bond is broken, enabling the spring to expand into a natural corrugated shape to apply a radial loading against the wedges and winding.

Abstract: A motor having a rotatable assembly which rotates about an axis of rotation and having a stationary assembly in magnetic coupling relation with the rotatable assembly. The stationary assembly includes a stator core which has two ends and a plurality of teeth. Adjacent teeth define a slot therebetween. The teeth are wrapped with windings adapted for commutation in at least one preselected sequence. The stationary assembly also includes a slot liner in each of the slots. The slot liners are disposed between the stator core and the windings, thus, separating the windings from the stator core. An end cap on each end of the stator core retains the slot liners in their respective slots.

Abstract: An improved rotor for a dynamoelectric machine which includes a rotor core of magnetizable material having a longitudinal axis and axially spaced core ends, winding end supports of electrically insulating material at the core ends, and a winding having a plurality of layers of continuously connected turns of wire and first and second exciter lead portions at electrically opposite ends of the winding. The first exciter lead portion includes a crossover section oriented generally transverse to the longitudinal axis and located at one of the core ends.

Abstract: A coil-end supporting apparatus comprising a holder comprising retainers for supporting the coil ends of a rotary machinery stator at both ends of a bar- or plate- shaped support and an insert perpendicularly intersecting the intermediate portion of the support in such a manner as to be inserted into a slot of a stator core; the holder supporting the coil ends; and a rotary-machinery stator equipped with the coil-end supporting apparatus.

Abstract: An improved construction of a .?.Randel.!. .Iadd.Lundell.Iaddend.-type rotor of a vehicle-mounted alternator, capable of reducing the windage noise which is produced as a result of interference between the rotor and the stator of the alternator. The rotor has a pair of pole cores provided with a plurality of mutually meshing claws, and an exciting coil disposed at the inner side of the pole cores. Spacers in the form of an integral ring or discrete wedges are fitted in the spaces between adjacent pole core claws so as to provide a substantially smooth cylindrical outer peripheral surface of the rotor portion facing the radial teeth on the stator.