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7619345 |
Stator coil assembly
A stator coil assembly includes a cylindrical support tube with first and second pluralities of stator coils disposed radially around the support tube. Each stator coil includes first, second,...
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7555893 |
Aircraft propulsion system
To provide an aircraft propulsion system which can secure the optimum thrust and thrust vector for flight conditions, as well as the optimum sectional area for the engine, and which is highly...
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7554241 |
Three-gapped motor with outer rotor and stationary shaft
A motor with three gaps produces higher torque than existing one or two gap motors. The motor uses both one radial and two axial gaps to produce torque. A single stator is provided with an...
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7282831 |
Generator in a wheel of a bicycle with collective multiple magnetic poles
A small generator with collective multiple magnetic poles includes a magnet, multiple magnetic poles arranged in an annular shape and facing to the magnet, an annular iron core having its outer...
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7242124 |
Sequentially joined-segment coil for rotary electrical machine
A polyphase sequentially joined-segment coil of a rotary electric machine and a production method thereof are provided. The coil is made up of a plurality of conductor segments joined in series....
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7132775 |
Stator of dynamoelectric machine and method for manufacturing stator winding
The present invention provides a dynamoelectric stator and a method for the manufacture thereof enabling electrical insulation properties to be improved by forming slot-housed portions with a...
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7091644 |
Sequentially joined-segment armature and ac machine using same
A sequentially joined segment armature coil is provided which may be employed in an ac machine such as an ac motor or motor generator. The armature coil is equipped with three phase coils each of...
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7000307 |
Method for reducing arcing for motor armature with distributed windings
An armature for a brush commutated electric motor having a distributed coil winding arrangement for reducing brush arcing and electro-magnetic interference (EMI). The winding pattern involves...
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6971153 |
Method of manufacturing winding of rotary electric machine
A method of manufacturing a winding of a rotary electric machine includes steps of pressing a portion of a conductor segment in a predetermined direction to reduce its dimension in the direction,...
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6910258 |
Method of assembling windings on a rotor core
A method is disclosed for fitting a rotor enclosure over at least one assembly of field windings mounted on a rotor core, said method comprising the steps: applying a force to elastically reduce a...
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6856063 |
Electromotive devices using notched ribbon windings
A multiple phase winding for an electromotive device comprised of individual phase windings. Each phase winding includes multiple layers of conductors and defines working length portions and...
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6841914 |
Motor with brush and commutator, and electric apparatus using the same motor
An arc length in contact with a commutator of two brushes in a rotational direction of a motor is defined as not more than 5% of an outer rim length or circumference of the commutator, i.e., not...
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6774525 |
Dynamo-electric machine
The present invention provides a dynamo-electric machine that prevents the lead portions of the coil portions disposed at places, at which mechanical balance is provided, from intersecting each...
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6710501 |
Stator for a dynamo-electric machine and method for the manufacture thereof
In a stator for a dynamo-electric machine, a winding includes a conductor having a rectangular cross-sectional shape in a direction perpendicular to an axial direction, an overall shape of the...
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6700282 |
Rotary electric machine and method for connecting stator conductors
A rotary electric machine having improved coil connection reliability, simplified coil end processing steps and improved workability based on an improved components mounting method is to be...
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6548933 |
Stator of rotating electric machine
A linear shape straight angle line is transformed to form U-shape configuration in advance and by sandwiching a stator tooth portion to adjacent slots linear shape two sides are inserted and using...
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6545377 |
Coil with cooling means
The invention relates to a coil comprising current-conducting turns ( 2 ) and cooling means ( 3 ) for cooling the coil. To improve the cooling efficiency, the coil comprises a plurality of heat...
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6388357 |
Armature winding for dynamo-electric machine
In a three phase armature winding for a dynamo-electric machine, each phase of the winding comprises a first phase belt for (3n+2) slots and a second phase belt for (3n+1) slots. Three parallel...
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6388355 |
Motor for an electric power steering assembly
A motor for an electric power steering assembly includes a yoke, a multipolar magnetic field portion composed of at least four poles secured to the inner wall of the yoke, a shaft disposed within...
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6326715 |
Stator for an automotive alternator
A stator for an automotive alternator includes a stator core having a number of slots, and a polyphase stator winding installed in the slots, the stator winding being constructed by joining a...
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6236138 |
Electro mechanical machine and armature structure therefor
The coils on the disc-type armature of an electro mechanical machine are all wound in the same direction (rotational sense). The coils on each face of the armature are formed into at least two...
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6229241 |
Structure and manufacturing method for motor and stator
A motor having a lap winding structure and a manufacturing method therefor, wherein inserts of two different coils are installed side by side in one slot of a stator in a circumferential direction...
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6201332 |
AC generator stator for vehicle
In an alternator stator for vehicle, each of the phase-windings includes first and second coil-end groups at opposite axial ends the stator core. Each of the slots includes radially aligned six...
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6181046 |
Dynamo-electric machine with commutator assembly
A commutator assembly for an electric motor includes a commutator having commutator segments arranged circumferentially, brushes contacting the commutator segments, and an equalizer connecting...
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6057623 |
Dynamo-electric machine having a hook shaped commutator and equalizer attached thereto
A dynamo-electric machine comprises an armature having a winding composed of a wire or wires wound by a lap winding method through slots extending in the axial direction formed on the outer...
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5986380 |
Mechanical constraints for tapered end turns of a generator rotor
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,...
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5925959 |
Electric generator with novel structure
The present invention provides a electric generator with novel structure, comprising two parts: a stator and a rotor. The stator has rectangle-section winding slots. The stator teeth have sectorial...
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5886444 |
Rotary machine and manufacturing method therefor
The present invention is characterized in that a rotary machine attempts to lower the resistance of each coil and realize improvement of efficiency and miniaturization of a motor by shortening the...
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5789841 |
Axial air gap brushless motor with layered disk stator
An axial airgap brushless motor including a rotor having a plurality of permanent magnet poles, and a stator having a plurality of conductor layers and a connecting layer for connecting the...
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5619085 |
Slotless, brushless, large air-gap electric motor
A polyphase electric motor includes a stator having a field winding and a field backiron, and a rotor disposed within the stator including a permanent magnet with a plurality of pole pairs, wherein...
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5616977 |
Polyphase electric machines with prefabricated winding layers
Known flat winding layers that can be prefabricated and inserted into soft magnetic bodies insufficiently utilize the available space in the grooves and winding overhang of polyphase machines and...
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5376852 |
Three-phase armature winding
In a three-phase four-pole armature winding of the double-layer lap type, three first pole windings of respective phases are dispersively arranged in first divided regions obtained by dividing all...
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5225729 |
Lap-wound stator with adjustable commutating angle
A stator winding for a motor comprising main, left and right poles wound by a main winding and auxiliary winding(s) which enable relatively continuous commutation angle adjustment by imparting...
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5065059 |
Field coil pole to pole connector with high cyclic duty capability
A high start/stop cyclic capability connector to interconnect the field coil poles in a rotating electric machine. The connector includes a U-shaped intermediate portion with parallel jaws which...
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4933586 |
D.C. rotary electrical machine
A D.C. rotary electric machine comprises an armature winding having a plurality of unit coils shifted from each other by a predetermined electrical angle and a commutator having a plurality of...
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4843270 |
Electrical machine with unequal pole faces
An electrical machine comprises a rotor (2) and a stator (5) as machine parts, means for generating an excitation flux, and active coils (W1-W5). In operation the coils link at least a portion of...
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4707629 |
Rotary converter having dual-winding rotor
The present invention includes a rotary converter for converting direct current to altenating current. The rotary converter includes a rotor and a stator. The rotor includes a shaft, a commutator...
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4644209 |
Cup-shaped winding and method of fabricating same
A cup-shaped winding for use in the rotor or stator of a motor such as a coreless motor or slotless motor makes use of leakage flux as well as magnetic flux in the main direction. The cup-shaped...
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4492890 |
Stator winding providing magnetomotive force wave of reduced harmonic content
A stator winding configuration employs graded, overlapping stator winding coil groups. The outer coils of the coil group have a reduced number of turns with respect to the center coil or coils of...
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4462859 |
Armature winding
An armature winding assembled in an armature core is formed by concentrically continuously winding a plurality of coils having respectively different coil pitches. The starting-end and...
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4431932 |
Advanced spiral pancake armature for a dynamoelectric machine
A spiral pancake armature winding assembly for a superconducting generator is provided which incorporates inner and outer support tubes along with a middle support tube disposed within the pancake...
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4417388 |
Method of making a multiple open turn lap wound dynamoelectric machine
Lap wound direct-current dynamoelectric machines may allow excessive currents to flow in single turn windings when such machines are operated at relatively low speeds and/or relatively high...
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4363985 |
Pole change dynamo-electric machines
A pole change dynamo-electric machine with three-phase distributed winding is adapted for reconnection to form either one of two different pole numbers and for operation on either one of two...
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4341973 |
Armature in electrical rotary machine
In the armature of an electrical rotary machine, each of the half coils printed on both surfaces of an insulating disc is made up of a radially extended linear conductor and inner and outer sloped...
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4334163 |
DC Electric motors
A DC electric motor comprising a tubular support carrying spaced bearings, a shaft journalled in said bearings for coaxial rotation within said support and having a driven end portion extending...
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4292559 |
Electric drive with a universal and induction motor combined on a common lamination stack
In an induction and universal motor combined in a common lamination stack and supplied from a single phase line in line with a single armature winding system common to universal commutator motor as...
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4227107 |
Direct current motor with double layer armature windings
A direct current motor, having armature windings superposed on each other in double layers, is provided with a fixed field magnet having 2 mn poles (m being a positive integer of 1 or more, n a...
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4219753 |
Winding arrangement for a direct current electric machine
A direct current electric machine with an ironless skew wound rotor coil rotating in the air gap of a stationary magnetic circuit is disclosed, wherein the rotor coil comprises a plurality of coil...
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4019075 |
Ironless rotor windings of rotary coils in miniature electric machines
An ironless rotor of high accuracy is provided readily and simply by coiling an elongated conductor into a plurality of hexagonal windings with a predetermined thickness, wrapping the windings...
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3979620 |
Segmental discoidal winding structure for dynamoelectric machines
A discoidal winding structure for an axial gap dynamoelectric machine is made in segments. Each segment is in the general shape of a sector of the discoid and contains a fraction of the total...
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