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5705874 |
Disc for electrodynamics motors
The invention relates to a disc (10) for the magnetic circuit of an electrodynamic motor with a central opening (12) and segments (14, 16) disposed about said opening (12), said segments having...
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5701047 |
Electric fan motor
An electric motor is suitable for use in, for example, a home appliance, such as a refrigerator/freezer, to drive a fan blade. The electric motor includes a permanent magnet rotor and an excited...
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5698925 |
Slotted wound stator for an electrical rotating machine, a method for manufacturing such a stator and a machine comprising such stator
Each stator lamination (2) is angularly offset with respect to the following adjacent lamination, about an axis (4) of the stator (1, 3), by a constant angle (α) equal to a multiple of the angle...
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5692882 |
Axial pump
A rotary blood pump includes a pump housing for receiving a flow straightener, a rotor mounted on rotor bearings and having an inducer portion and an impeller portion, and a diffuser. The entrance...
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5689147 |
Brushless motor
A brushless motor comprising a stator core having a plurality of tooth portions disposed peripherally at intervals, coils wound in a required manner on a plurality of tooth portions, an annular...
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5663601 |
Core winding set for a motor
A core winding set for a motor has a core with a plurality of salient poles, an insulation layer formed on a surface of the core and a winding wound around each of the salient poles. The insulation...
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5650680 |
Dynamo electric machine with permanent magnet rotor structure
A permanent magnet generator includes an annular stator with windings on the inner face. A round rotor is rotatably mounted in the stator, and includes a plurality of circumferentially spaced...
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5649349 |
Method for manufacturing of laminated components
A method and apparatus for manufacturing laminated rotor cores in which lamina thickness variations are compensated for without disturbing the relative alignment of lamina shaft holes throughout...
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5644181 |
Stator lamination design having a tapered opening
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...
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5642011 |
Double-stator electromagnetic pump having alignment ring and spine assembly
A support structure for clamping the inner coils and inner lamination rings of an inner stator column of an electromagnetic induction pump to prevent damaging vibration. A spine assembly, including...
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5637943 |
Rotor groove
In a squirrel-cage rotor, the theoretical ideal groove cross section is divided radially into at least two zones, which are displaced relative to each other alternatively in and against the...
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5635778 |
Motor for electric pumps
A motor for electric pumps which can easily prevent unbalance caused by the eccentricity of an armature shaft when the motor is in rotation by forming holes in a plurality of armature core sheets....
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5619086 |
Twin bobbin C-frame motors and methods for making same
A C-frame motor having cooperating first and second stack of laminations is disclosed. The first stack of laminations includes an end leg with a spaced pair of side legs which are attached at one...
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5604389 |
Spindle motor
A spindle motor is disclosed. The spindle motor is provided with a magnet fitted to a rotor, and a stator core, around which coils are wound. Openings are provided in the base plate. A part of each...
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5554901 |
Servo-drive for rotary angle adjustment of an actuator for controlling an opening cross-section of a medium flow line
A known servo-drive including a stator which is formed with two-component design or the exciter winding has to be attached directly to the stator, which is associated with a costly production...
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5548171 |
Direct-current motor
A direct-current motor is provided with a field pole including a main magnetic pole having an axial length of Lm and an auxiliary magnetic pole; and an armature core which is rotatably supported...
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5539974 |
Method for producing laminated iron cores
A method for producing laminated iron cores, in which at least one of a semi-stator sheet piece and a semi-rotor sheet piece is subjected to a pressing operation in a sheet thickness direction to...
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5534739 |
Electric machine
An electric machine includes an exciter part and an induction part disposed adjacent the exciter part. The exciter part and the induction part define an air gap there-between and are movable...
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5498917 |
Stator for motor
A stator for a motor in which there are provided a ring-shaped yoke portion iron core (2), tooth portion iron cores (3) arranged at an equal interval on the inner circumferential side of the yoke...
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5498918 |
Rotor for an electric machine
The invention relates to a rotor for an electric machine, particularly to a rotor for a hermetic refrigerating compressor. The rotor core contains a number of axial slots, containing the electric...
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5491371 |
Electrical machinery laminations cooling
A lamination for the stator or rotor of an electrical machine, the improvement comprising the lamination having a first periphery extending about a central axis defined by the lamination; the...
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5477096 |
Laminated core for a motor
A laminated core for a motor includes a plurality of core members made of magnetic material and which are laminated to form laminated core members; insulating layers formed on the surfaces of the...
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5471101 |
High efficiency electrical machine with minimized material content
An improved method is provided for the design of high-efficiency electric machines. The maximum practical value of air gap flux density B g is selected, consistent with maintaining acceptable...
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5457350 |
Laminated core of rotating electric machine
A laminated core for a rotating electric machine comprising a plurality of single sheet cores, each single-sheet core being formed by arranging a plurality of salient poles continuously on a...
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5449963 |
Armature end protector for a wound rotor
An armature end protector for protecting rotor windings from the end of a rotor stack, includes a hub and a body portion. The body portion has a plurality of radially extending spokes which cover...
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5434463 |
Direct current motor with crescent shaped brushes
A single speed, two pole permanent magnet motor has compact brush card assembly mounted within the volume form by a plurality of ring shaped laminations forming the armature to allow the height of...
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5420471 |
Electric generator utilizing minimal mechanical power
An electric generator which can be powered using a minimal amount of mechanical power, and in particular, an electric generator having a weak electromagnet which acts as a stator core, thus...
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5402028 |
Stator for an electric machine
The stator for an electric machine has a two-part stator laminate stack for mounting a stator winding consisting of two laminated stack parts (21,22) having a self-centering device. The laminated...
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5402026 |
Rotor for a short circuited alternating current motor
A rotor for short-circuited alternating current motors, having a pack of circular rotor blades fixedly mounted on a shaft, the plates have, uniformly around the peripheral edges thereof, a number...
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5398014 |
Core having earth contacting
A core for an ignition coil comprises a core element formed as a core stack with a plurality of laminations and having a mounting bore with an insulating layer, a connecting element for connecting...
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5397953 |
Stator for disc type electric motor
There is disclosed a stator for a disc type electric motor. The stator coises an annularly-shaped member of a non-magnetic material, the member having a slotted portion and a non-slotted portion....
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5382861 |
Asynchronous motor and a procedure for the manufacturing of the stator and/or rotor of an asynchronous motor
An asynchronous motor is disclosed with stator and rotor windings placed in respective grooves, at least one of the windings being a cast winding. The grooves on the stator and those on the rotor...
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5382859 |
Stator and method of constructing same for high power density electric motors and generators
A stator core for rotary high power density electro-mechanical transducers formed of multiple segments which have a plurality of radially oriented teeth. The stator core is a composite of two or...
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5382860 |
Electromagnetic pump stator core
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...
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5365137 |
Electric motor
A modular, expandable, low-weight electric motor has a cylindrical, non-magnetic casing formed in axially-aligned sections. The casing sections are releasably connected to define a unitary...
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5363002 |
Dynamoelectric machine having fluid cooling of back iron and end turns
A dynamoelectric machine such as a generator has stator winding end turns which extend beyond the ends of a stator core of the apparatus. The end turns are cooled by conveying fluid coolant from...
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5363004 |
Rotator element for electric motor
A rotator element for an electric motor is formed with a cylindrical core body which is to be rotated by a rotary filed produced by a winding of the electric mortor and a plurality of magnets. The...
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5359249 |
AC generator with tapered slots
A stator of an AC generator according to the present invention has a stator core which is formed in a ring shape having tooth portions protecting inside said ring shape and forming slots. The width...
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5355045 |
Torque reaction transfer in dynamoelectric machines having energy-efficient stator constructions
In a radial gap dynamoelectric machine a composite stator ferromagnetic structure having reduced losses is formed using thin section metallic glass or electrical steel strips folded or otherwise...
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5349741 |
Method of making an interlocked core spaced for anneal penetration
A process and apparatus for manufacturing lamina stacks used to form rotor or stator cores for electric motors. In the process of forming a plurality of blanked lamina, a blanking and stacking...
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5339514 |
Method of manufacturing laminated stator with improved flux pattern
A stator for a fractional horsepower motor has a mounting hole of reduced dimensions for fixing the position of motor mounting brackets which support a rotor. The configuration of the mounting...
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5338996 |
Armature core
An armature comprising a number of core sheets each having a number of slots and wherein a plurality of punched-in recesses for fitting are formed on the tail side of each core sheet and a...
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RE34667 |
Stator and rotor lamination construction for a dynamo-electric machine
A dynamo-electric machine includes a stator core fixed in a casing and formed of stator lamination plates, and a rotor supported in a bore of the stator core and formed of a stack of rotor...
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5331238 |
Apparatus for containment and cooling of a core within a housing
A core is retained within a housing, and a cooling fluid is supplied axially along an axis of the core between the housing and the core in order to cool the core. The core may have core laminations...
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5325009 |
Rotor shaft with integral wedge retainers for core of a two-pole generator
A two-pole generator rotor assembly (100) including a core (120) and a shaft for mounting the core (120). The shaft includes a pair of shaft end portions (117, 119), with each of the shaft end...
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5323080 |
One-piece rotor shaft for two-pole rotor
A two-pole generator rotor assembly including a one-piece shaft, a prewound field coil assembly and a one-piece shaft. The one piece shaft includes a pair of axially spaced shaft end portions and a...
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5304884 |
Molded armature
An armature, a method for producing the armature and a mold for molding the same are so configured that the coil pitch of each of phase coils is set to a value of 125% or less of the pole pitch,...
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5304885 |
Electric motor armature with winding end protection
An armature for a fractional horsepower motor is provided with spiders 10A having spokes 20 and arms 24. The spiders 10A fit at at least an end of laminated armature stacks around which the...
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5296773 |
Composite rotor for a synchronous reluctance machine
A rotor assembly for a synchronous reluctance dynamo/motor machine has a plurality of axial laminations comprised of alternate magnetic and non-magnetic materials. The rotor has an end cap on each...
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5293093 |
Limited large angle rotary dynamoelectric machine
A limited large angle dynamoelectric machine generates a constant torque over an arc greater than 180 degrees without discontinuity and zero cogging. At any given location of the rotor, the flux...
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