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6114789 |
Switched reluctance motor
A switched reluctance motor comprised of a stator having a plurality of evenly spaced, radially oriented, like stator poles that define a gap between adjacent stator poles. Windings for three...
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6114784 |
Motor with cooling structure
In a motor having a cylindrical stator fixed to a motor housing and inner and outer rotors concentrically arranged to the stator, a cooling structure of the motor includes cooling jackets formed in...
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6107718 |
Stator for an electrical machine
In a stator (11) for an electrical machine, in particular for a starter motor in motor vehicles, having an exciter winding (22) with a plurality of windings that is wrapped randomly around the...
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6104113 |
Coil assembly for sensorless rotor angular position control of single phase permanent magnet motor
A coil assembly for sensorless rotor angular position control of a single phase permanent magnet motor. The coil assembly is positioned axially adjacent one end of the motor's rotor core in...
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6097115 |
Counterbored rotors for natural frequency variation
A motor having improved resistant to vibration has a shaft, a pair of bearings engaging the shaft, a set of pressed-on laminations stacked axially on the shaft between the pair of bearings, and a...
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6093993 |
Set of laminations for a switched reluctance machine
A switched reluctance machine has a stator or rotor lamination with pole arcs that are wider than necessary to fulfill the starting requirement of producing torque in the required direction at...
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6087755 |
Radial gap type cylindrical motor
A motor structure having an armature yoke 1 including a cylindrical portion and a plurality of salient poles 20 formed in the radial direction on the circumference of one end of the cylindrical...
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6081059 |
Outer-rotor electric motor having inner-stator formed by concentrically wrapping flattened stator elements on stator core
An electric motor of outer-rotor type includes: an inner stator mounted on a stator holder, an outer rotor rotatably circumferentially disposed around the inner stator, a shaft coaxially secured...
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6075304 |
Stator with molded encasement for small motors and manufacturing process therefor
A stator has a lamination stack with a first electrically insulating layer and coil guides formed of high flow thermoplastic synthetic resin simultaneously insert-molded thereon. A coil is wound...
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6072259 |
Stator for electric motor
A stator core for a motor in which a member with rounded edges is used to prevent the electrical breakdown of the winding of a coil which may occur at a slot edge therein. End plates 18 are...
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6072260 |
Noise reduction in reluctance machines
In a switched reluctance machine, the air gap between aligned rotor and stator poles is defined to have an inner region of substantially uniform length and outer regions of increasing length. The...
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6066908 |
Disc-type brushless alternator
The present invention resides in an improved disc-type brushless alternator which contains an alternator housing, a shaft rotatably attached to the alternator housing, a plurality of rotors and a...
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6064134 |
Rotor for a synchronous reluctance machine
A rotor assembly for a synchronous reluctance machine has a plurality of steel punched star-shaped supports secured along a shaft at spaced locations for retaining a plurality of laminated rotor...
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6064132 |
Armature structure of a radial rib winding type rotating electric machine
A structure of an armature of a radial rib winding type rotating electric machine which constitutes at least a member of a stator or a rotor is disclosed. The structure comprises a laminated core...
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6060810 |
Stator for linear motor by staggered core lamination
The present invention relates to a stator for a linear motor by staggered core lamination which can facilitate insulation and assembly of a stator core, can freely set an interval of an opening of...
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6057624 |
Canned motor with stator can reinforcement
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...
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6057621 |
Cylindrical radial gap type motor structure
Salient poles made from soft magnetic steel plates have tip sections of approximately the same length as a rotor magnet. The salient poles are constructed with laminations in the circumferential...
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6057625 |
Pole insulator cap
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...
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6043583 |
Motor structure
A motor structure having a laminated stack made of soft magnetic plates, a plurality of laminated constituting stator magnetic pole portions and a yoke portion, between each plate is an insulative...
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6034461 |
Stator of motor
A stator of motor into which two separate magnetic poles wound by conductive wires are assembled is applied. The stator has a minimized space between the magnetic poles, so that the magnetic...
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6031311 |
Brushless DC motor capable of preventing leakage of magnetic flux
A brushless DC motor has a stator and a rotor. The stator has a stator core and excitation coils wound around the stator core. The rotor has a rotor core disposed at the inner space of the stator,...
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6031312 |
Squirrel cage rotor
A squirrel cage rotor includes a cage, lamination sheets provided with a plurality of slots, and short circuit rings arranged at the axial ends of said lamination sheets and connected by short...
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6023118 |
Stator of single-phase electric motor with four poles having parallel axes
A stator of an electric motor with four poles which are all parallel to each other and arranged in mutually opposite pairs around the rotor cavity. Each pole has a pole shoe which is inclined...
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6020667 |
Stator bonding nib
A stator includes projecting portions extending from an outer edge of a plurality of stator laminations. The projecting portions form a point. When the stator is inserted into a motor housing, the...
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6018208 |
Articulated motor stator assembly for a pump
An articulating motor stator assembly for use in a pump incorporates features that permit recycling of the motor stator when disposing of other parts of the pump. Such a stator assembly facilitates...
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6012217 |
Method of fabrication of motor coil stator including bobbin wound coils
A motor stator comprises a first stator frame part, a second stator frame part including first and second pole portions separated by a stator bridge, and two magnetic arms. Each of two bobbins is...
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6013963 |
High efficiency electro-mechanical energy conversion device
An Electro-Mechanical Energy Conversion (EMEC) device and a method of electro-magnetically converting electrical energy to mechanical energy and electrical energy. The EMEC device comprises a...
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6011340 |
Dynamo-electric apparatus and methods for manufacturing
A dynamo-electric core which has a lamination stack defining an axial bore therethrough is wrapped by a wire coil having a coil lead. A mounting member is axially movable within said axial bore...
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6008562 |
Rotor section containment with steel punched star
A rotor assembly for a synchronous reluctance machine has a plurality of steel punched star-shaped supports secured along a shaft at spaced locations for retaining a plurality of laminated rotor...
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6008563 |
Reluctance motor and compressor-driving reluctance motor
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.
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6002191 |
Paired interlocks for stacking of non-rotated lamination cores
A rotor core is formed from a stack of laminations. The core includes a plurality of generally circular laminations in a stacked formation one on top of each other. Each lamination defines an axis...
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6000119 |
Lamina stack having a plurality of outer perimeter configurations and an apparatus and method for manufacturing said stack
A method and apparatus for manufacturing a lamina stack having laminas with a plurality of outer perimeter configurations. Each of the outer perimeter configurations has at least one common choke...
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6002190 |
Weight optimized rotors
A substantial saving of material cost and weight is obtained in an induction motor by a rotor including two sets of differently punched laminations. The laminations in one of the two groups each...
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5998904 |
Motor
A motor comprises a stator 101 and a rotor 102, wherein the stator 101 has recesses (small-diameter sections) 107, 108 and large-diameter sections 103 and is formed with a plurality of slots that...
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5992003 |
Method for spacing laminations
A method for manufacturing laminated parts in which spacing of individual laminas is maintained during the manufacturing process. As the laminas are stamped from strip stock material, a staking lug...
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5994814 |
Reluctance motor having magnetic poles formed by laminating steel plates in circumferential direction
Directional electromagnetic steel plates are laminated, and a plurality of stator and rotor core segments are produced by generating into an approximate U-shape so as to provide a U-shaped cross...
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5990591 |
Permanent magnet type synchronous motor
A permanent magnet type synchronous motor includes an iron core rotor having a plurality of holes which are circumferentially spaced, permanent magnets mounted in the holes, an iron core stator and...
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5990584 |
Direct current torque motor with extended stator poles
A permanent magnet D.C. torque motor has the stator mounted in cantilever from a base and nested in a cup-shaped rotor journalled for rotation on the base. The permanent magnets are disposed about...
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5990595 |
Rotors and methods of manufacturing such rotors
Rotors and methods of assembling such rotors for electric motors are described. In one embodiment, the rotor includes a substantially cylindrical core having substantially planar first and second...
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5986366 |
Rotor for a dynamoelectric machine
A rotor (10) is provided for a dynamoelectric machine. The rotor (10) includes a rotor shaft (12) and a laminated core (14). The rotor shaft (12) is adapted to mount the rotor (10) for rotation...
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5986378 |
Electric motor and generator having amorphous core pieces being individually accommodated in a dielectric housing
A device such as an electric motor, an electric generator, or a regenerative electric motor includes a rotor arrangement and a stator arrangement. The stator arrangement has a dielectric...
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5986377 |
Stator for dynamoelectric machine
A stator for a dynamoelectric machine includes an annular stator core composed of a developed core formed by stacking a number of steel sheets, each steel sheet including a plurality of unit cores...
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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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5986374 |
Vehicle mounted motor with rotor having ferrite magnet section with embedded permanent magnet pieces therein
A motor mounted in a vehicle having ferrite magnet section formed as a rotor core. The ferrite magnet section has a plurality of recesses, or through holes, circumferentially provided along an...
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5982071 |
Cooling of electrical machinery
An electrical machine has a stator, and a rotor defining an axis of rotation, the stator including laminations located along that axis, the laminations having protrusions, the protrusions on each...
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5982055 |
Miniature motor
A miniature motor with a two-pole stator, and a rotor having three or more salient poles each having a core with flanges extending toward both sides thereof and a winding. The rotor is adapted to...
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5977684 |
Rotating machine configurable as true DC generator or motor
A rotating machine configurable as a pure DC generator for use in various applications, including recharging batteries in battery operated portable devices. The generator consists of a pair of...
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5977680 |
Method for trimming the stator of a motor
An improved method for stator of a motor, which is related to a shape of a stator made of laminated silicon steel in a motor; the prime of the method is to reduce the cogging torque upon the motor...
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5977671 |
Motor assembly for driving a fan of a gas boiler
An fan motor assembly for driving a fan of a gas boiler. The motor assembly has a core having a hollow portion at a center thereof, a coil assembly for magnetizing the core by applying an electric...
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5977679 |
Pole-phase modulated toroidal winding for an induction machine
A stator (10) for an induction machine for a vehicle has a cylindrical core (12) with inner and outer slots (26, 28) extending longitudinally along the inner and outer peripheries between the end...
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