Matches 301 - 350 out of 1034 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6384507 Coreless AC induction motor  
Disclosed herein is a coreless AC Induction motor. The motor comprises a cup type coreless rotor. A rotating shaft is combined with the cup type coreless rotor. An induction rod is inserted into...
6380658 Method and apparatus for torque ripple reduction in sinusoidally excited brushless permanent magnet motors  
A method for determining a dimension in a motor is described. By applying Fourier analysis, a sequence of terms is obtained. Since the fifth harmonic is the most undesirable term, the minimization...
6376956 Permanent magnet pole arrangement of motor  
A pole arrangement of a motor includes a plurality of permanent-magnet main poles disposed annularly at equal intervals on the inner periphery of a yoke, a plurality of auxiliary poles disposed...
6376955 Motor/generator with multiple rotors  
A first rotor ( 9 ) is disposed on an inner side of a first stator ( 7 ) provided with a plurality of coils ( 19 ). A second rotor ( 15 ) is disposed on an inner side of a second stator ( 13 )...
6376954 Hermetic compressor for a refrigeration system  
A hermetic compressor for a refrigeration system, in which a previously dilated tubular bushing ( 10 ) is mounted around an axial portion of a shaft ( 6 ) and affixed to said axial portion upon...
6373921 X-ray unit including electromagnetic shield  
An X-ray unit includes an X-ray tube including a rotating anode coupled to a rotor and a metal frame enclosing the rotating anode and the rotor. A motor, including the rotor of the X-ray tube, and...
6373161 Periodic air gap electric generator  
A rotating machine that can generate standard AC, high-frequency AC, or DC electricity by non-conventional means. The method involves changing the air gap between a pole of a stationary magnet and...
6362555 Small motor with improved connecting structure between coil, riser and varistor  
When winding an armature coil, start S of a winding is entwined around a riser R 1, the wire is wound via a riser R 4 around a salient pole P 1 adjacent to the riser R 4 and an opposed salient...
6362552 Electric motor rotor  
A novel electric motor rotor has a plurality of laminate discs 20 having a central aperture 22 and a plurality of slots 30 therein for acceptance of a plurality of electrically conductive...
6362551 Motor rotor and its manufacturing method  
A motor rotor and a method for making the motor rotor are disclosed. A rotor casing and a central shaft of the rotor are integrally formed. The central shaft is in a central position of the rotor...
6359365 Superconducting synchronous machine field winding protection  
A superconducting winding includes a pair of superconducting winding sections electrically connected at a node and bypass circuitry connected between the node and electrical ground and configured...
6353272 Rotor shaft for a rotary machine and rotary machine provided with a rotor shaft of this kind  
A rotor shaft for a high speed rotary machine has bearing parts which, after being fitted in the machine, are held in oil-lubricated sliding-contact bearings. The rotor shaft is provided, in the...
6351043 Dynamically balanced small electric motor  
A small electric motor comprising a stator, a rotor with a rotor shaft, and a projecting shaft end of the rotor shaft which has arranged thereon an element to be driven, so as to be of a...
6338447 Device for tensioning yarn or the like  
A device for applying tension to yarn or the like, the device including a stator and a rotor. The rotor includes an outer spool around which, in use, yarn or the like is passed and an inner part...
6339275 Rotor, method for assembling rotor, and motor using the rotor  
A rotor includes a hollow rotor case having a cylindrical portion and flanges on ends of the cylindrical portion, an annular magnet fixed to the inner circumferential surface of the cylindrical...
6329734 Permanent magnet and reluctance type rotating machine  
A permanent magnet-reluctance type rotating machine includes an annular stator having armature windings arranged on an inner periphery of the stator, a rotor rotatably arranged inside the stator...
6323575 High-efficiency rotating coil torque motor  
A torque motor includes an annular, cylindrically symmetric, stationary inner support ring having an outer surface, and a plurality of inner permanent magnets affixed to the outer surface of the...
6317963 One piece, extruded housing for a dynamoelectric machine  
A dynamoelectric machine (10) includes a stator (12), a rotor (14), a bearing (16) supporting the rotor (14) for rotation about an axis (20), and a housing (22). The housing (22) is manufactured by...
6316850 Small-sized motor  
A small-sized motor includes a rotor, which, in turn, includes a shaft, a laminated core forming salient magnetic poles an odd number and mounted on the shaft, windings, each being wound around a...
6311383 Method of manufacturing electric-machine-rotor having a field coil and permanent magnets  
An electric-machine rotor is composed of a field coil, a pair of pole cores having a plurality of claw poles to enclose the field coil, a plurality of auxiliary permanent magnets disposed between...
6313561 Dynamic blocking restraint of a rotor field winding contained by a non-metallic structural rotor enclosure  
The conventional bar by bar assembly of a generator rotor can be replaced with a solid rotor having parallel slots milled into a rotor forging so that containment components can be replaced with a...
6310418 Reduction of sparking in large rotating electrical machines  
In a large rotating electrical machine having a rotor comprising conductor bars of copper located in slots in a rotor core and connected together at their ends to form a winding, the conductor bars...
6304009 Rotor assembly and method of manufacturing  
Described is a rotor assembly comprising: a circular iron core having a top and bottom side spaced from each other; extruded aluminum bars inserted into and around the circumference of the...
6300703 Rotor core for reluctance motor  
This invention pertains to a rotor core (6) in which a plurality of core sheets (1) are laminated on one another on a rotor shaft (4). A plurality of slits (3, 7) and a plurality of strips (2) are...
6300704 Rotor for an electric motor and process for manufacturing the rotor  
A rotor for an electric motor includes a commutator and a rotor shaft with a rotor winding that is contained in a rotor body supported on the rotor shaft in a rotationally fixed manner. The...
6291916 Rotor balance structure  
A rotor balance structure, which comprises a vane shell, a rotor case installed on the inner side of the vane shell, and a magnet installed on the inner side of the rotor case. The rotor is coupled...
6291920 Motor counter weight attachment  
A counter weight system for an electric motor having a rotor with an end ring, the end ring having an outer surface, and at least one deformable lug extending from and a plurality of projections...
6291919 Conductive structural interface for a non-metallic rotor enclosure  
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...
6285110 Spline retaining ring  
A retaining ring for a rotor assembly, the retaining ring adapted to constrain field winding end turns arranged in a rotor body, the retaining ring comprising axially inboard and outboard ends and...
6281615 Stepping motor  
A magnet type stepping motor which has (1) a stator with three-phase stator windings, and 6m pieces of stator main pole arranged side by side, where m is an integer and ≥1, the stator windings of...
6274962 Induction motor driven seal-less pump  
A seal-less pump and electric motor assembly includes a motor rotor fixed to a driving shaft connected to an impeller in the pump assembly. The rotor and impeller are enclosed in a common housing...
6271613 Rotating machine, such as motor vehicle alternator  
An electric machine such as an alternator for a motor vehicle is provided. The machine includes a stator and a rotor, the stator having at least one secondary winding received in at least one pair...
6268674 Magnetic bearing apparatus  
A magnetic bearing apparatus is capable of supporting a rotatable rotor in a non-contact manner. The apparatus includes a plurality of electromagnets and a slit. The electromagnets are disposed...
6268673 Control coil arrangement for a rotating machine rotor  
A rotating machine (e.g., a turbine, motor or generator) is provided wherein a fixed solenoid or other coil configuration is disposed adjacent to one or both ends of the active portion of the...
6265805 Rotor shaft of synchronous electric machine  
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...
6252331 Brushless, separately-excited, variable-speed motor and AC generator/alternator with solenoid-wound, biphase AC rotor  
A rotating electrical machine includes a two-phase rotor having two non-rotating solenoid-wound rotor coil assemblies and two interleaved pole assemblies. Each pole assembly is magnetically coupled...
6252329 Rotor stack  
Rotor for electric motors, in which the laminations of two types and arranged alternately, are made in a manner that a first type is provided with a plurality of protrusions formed by respective...
6252323 Revolving magnetic field type motor  
A revolving magnetic field type motor has a rotor and a stator. The rotor has a plurality of permanent magnets. The permanent magnets defines a plurality of rotor magnetic poles. The number of the...
6246141 High torque reduced starting current electric motor  
An AC squirrel cage motor runs with a rotor current frequency equal to the slip of the motor times its excitation frequency. It is desirable to reduce the rotor current on start up by means of an...
6242833 Wound cover arrangement for an electric motor rotor  
A wound cover arrangement for an electric motor rotor, said rotor including a core (20), magnets (30) surrounding said core and a cover (10), which is wound around the core, in order to retain said...
6239527 Non-circular field winding enclosure  
An enclosure formed of a non-magnetic material occupies space in the non-magnetic gap between the rotor and stator. As the enclosure thickness increases, the size of the air gap, which is the...
6239532 Motor with external rotor  
An inside out motor includes a rotor including a concave member, a shaft defining a longitudinal axis mounted on the concave member and a magnet mounted on an interior surface of the concave...
6239526 Flux barrier synchronous reluctance motor  
A flux barrier type synchronous reluctance motor in which a plurality of flux barriers are provided in a rotor, of which a plurality of ribs form the end portion of each of the flux barriers,...
6239525 Permanent magnet dynamoelectric rotating machine and electric vehicle equipped with the same  
A permanent magnet dynamoelectric rotating machine comprises a stator provided with windings; and a rotor disposed with an air gap between the stator and the rotor, and provided with a plurality of...
6236126 Brushless motor  
A brushless motor comprises a parts protecting case; a drive shaft rotatable about its axis relative to the parts protecting case; a fixed housing for rotatably holding therein the drive shaft; a...
6236128 Radial lead spanner nut assembly with integral seals for hydrogen-cooled power generators and associated methods  
A radial lead spanner nut assembly (60) for preventing leakage of hydrogen gas in hydrogen-cooled power generators, an apparatus (50), and method are provided. The radial lead spanner nut assembly...
6236134 Hybrid alternator  
A hybrid alternator comprising a stator, and a rotor mounted for rotation within the stator and separated therefrom by an air gap. The rotor has a rotor core defining a plurality of magnetic poles...
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...
6229243 Rotor construction for controlled-pole electric machines  
A rotor for use in a high speed controlled-pole electric machine can include a rotor core having an exterior surface; a first layer of remagnetizable magnetic material positioned about the rotor...
6229239 Electrical machine with double excitation  
A double excitation, rotating electrical machine mounted on a shaft includes a rotor whereof the magnetic circuit carries at least one excitation element and a stator whereof the magnetic circuit...
Matches 301 - 350 out of 1034 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >