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7608956 |
Automotive engine starter and electric rotary machine designed to withstand vibrational impact
An electric rotary machine which may be employed as a dc motor in an automotive engine starter. The motor includes an armature equipped with an armature shaft, a commutator, brushes, and a bearing...
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7605516 |
Motor, commutator, short-circuit member, and a method for manufacturing the commutator
A commutator connected to armature coils includes circumferentially arranged segments, short-circuit conductors, and a surge absorbing element. The number of the segments is a multiple of the...
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7586230 |
Brush, commutator, and commutator device
In a commutator of a rotary electric machine, each of commutator segments has a low-resistive layer made of a low-resistive material and a high-resistive layer made of a high-resistive material...
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7583004 |
Short-circuiting member, commutator, and method of manufacturing short-circuiting member
A short-circuiting member for preventing a commutator from being elongated in the axial direction without increasing the types of different components. The short-circuiting member includes...
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7569959 |
Motor
A motor has a field body having a number of field poles and an armature body having a number of coils which is placed outside of the above described field body in the radial direction. A commutator...
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7560848 |
Electrical machine with commutator rotor
An electrical machine having at least four exciter poles in the stator and having a commutator rotor, which has a number of slots pole teeth on its circumference that is greater than the number of...
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7560719 |
Commutator measuring device
The present disclosure provides an apparatus and method for the measurement of the width and radial spacing of commutator segments with respect to span. The apparatus utilizes a microprocessor and...
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7550893 |
Armature, method for manufacturing the armature, and direct current motor
Coils are provided on a plurality of tooth sections of a core. The coils are formed by successively winding a conductor on the tooth sections with at least one tooth section between each successive...
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7548002 |
Axial air-gap rotor and axial air-gap coreless motor equipped with the same
An axial air-gap rotor includes wound air-core armature coils disposed on one side of a printed wiring board, and a cylindrical commutator disposed at the rotation center. The commutator includes...
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7518282 |
Rotor, vibration motor having the same, and fabrication method thereof
A rotor, vibration motor having the same, and fabrication method thereof are disclosed. A rotor according to an embodiment of the invention comprises a first layer on which are formed a plurality...
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7495366 |
Compact slip ring incorporating fiber-on-tips contact technology
A compact slip ring ( 20 ), which is particularly adapted for use in small spaces, is adapted to provide electrical contact between a rotor ( 22 ) and a stator ( 21 ). The improved slip ring...
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7462972 |
Commutator for an electric machine
A commutator for an electric machine comprises a support member made from insulating molding compound, a plurality of metal conductor segments ( 3 ), disposed thereon in evenly spaced manner around...
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7414345 |
Commutator and armature
A commutator including a commutator main body having a plurality of commutator pieces and a short-circuit member having a short-circuit conductor for short-circuiting commutator pieces. The...
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7400077 |
Electric motor having multiple armatures
An electric motor that includes a housing, a rotatable axle, a first field armature, which is disposed substantially around the axle and secured to the axle, and which includes a plurality of first...
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7396217 |
Fuel pump to be installed inside fuel tank
A fuel pump for supplying fuel drawn from a fuel tank into an internal combustion engine comprises a rotor, a rotation shaft, bearing members and a drawing force generative means. The rotation...
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7375452 |
Commutator for an electrical machine
A commutator for an electrical machine, in particular for an electric motor for actuating drives in motor vehicles, has a commutator body that supports commutator laminations. To reduce the...
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7362029 |
Fuel pump comprising an electric motor
The invention relates to a fuel pump which comprises an electric motor. Said electric motor is provided with carbon brushes ( 11 ) that cover a plurality of lamellae ( 17 ) of a collector ( 9 )....
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7362020 |
Commutator housing with an overcurrent protection device
A commutator housing for a direct-current motor includes conductive tracks and two Lyre-shaped connectors each inserted in one of the conductive tracks. An overcurrent protection device is inserted...
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7352103 |
Motor assembly with a sealed commutator/brush interface
A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in...
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7352100 |
Direct-current motor
A stator of a direct current motor includes six magnetic poles. An armature of the direct current motor includes an armature core having eight slots, a plurality of windings wound around the...
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7327061 |
AC generator and method
One aspect of the invention is a generator with at least two commutators mounted on a rotatable shaft. At least two magnetically conductive bars may be mounted in an opposed relationship with at...
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7327058 |
Vibration motor having brushes with different osculatory tracks
A vibration motor includes a stator assembly, a rotor assembly, a shaft and a pair of brushes having different osculatory tracks. The stator assembly includes a magnet and a lower substrate. The...
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RE39974 |
Management of contact spots between an electrical brush and substrate
Devices for the management of contact spots, partly consisting of surface plating, partly of surface polishing and partly of substrate surface profiling in the form of parallel grooves stretched...
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7285931 |
Brushless motor commutation and control
A commutation apparatus drives a brushless motor having a stator equipped with a plurality of coils and a rotor. The commutation apparatus comprises a rotatable commutator shaft, two or more...
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7196440 |
Electric manual machine tool driven by an electric motor
A hand power tool that is driven via an electric motor ( 20 ), the electric motor ( 20 ) having a commutator ( 28 ) which is formed of disklike annular segments or laminations ( 32 ), is made more...
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7148602 |
Commutator
A commutator is provided which can be produced at low cost and is excellent in wear resistance and can be used in the fuel pump. The commutator is one in which at least those portions which come...
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7129657 |
Single track brush-based position encoder for rotating shaft
A position sensor generates a signal representative of the angular position and, if desired, angular velocity of a rotating object using only a single circular track and plural brushes that ride on...
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7129610 |
Commutator for an electric motor
A commutator includes a support ring and a plurality of conducting segments arranged over a circumference of the support ring. Some of the conducting segments have an electrically insulating...
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7119468 |
Electric motor
An electric motor intended for driving transport vehicles without a reduction gear is described. The electric motor can have an annular magnetic conductor of the stator with permanent magnets...
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7102266 |
Motor assembly with a sealed commutator/brush interface
A motor assembly includes a commutator having a shaft extending axially therefrom, a commutator end bracket assembly, and at least two brushes carried by the commutator end bracket assembly and in...
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7084547 |
Motor, fuel pump, commutator, and method for manufacturing a commutator
A commutator includes six segments disposed in the direction of rotation, and is attached to one axial end of an armature. By the commutator rotating together with the armature, each of the...
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7084546 |
Commutator, manufacturing method of commutator, manufacturing apparatus of commutator and commutator plate material
A commutator includes a generally cylindrical dielectric body and a plurality of commutator segments arranged along an outer peripheral surface of the dielectric body. Each commutator segment...
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7045926 |
Commutator for an electric motor
A commutator for an electric motor includes a support ring, a plurality of metal segments arranged around a circumference of the support ring, and a plurality of capacitors arranged between the...
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7043822 |
Method of manufacturing commutator of rotary electric machine
A method of manufacturing a commutator of a rotary electric machine includes a step of forming a first unitary material having nail portions, a step of forming a second unitary material for the...
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7009323 |
Robust commutator bar anchoring configuration with dove-tailed features
A commutator bar ( 10 ) includes a body and first and second anchors disposed in spaced relation with each anchor and coupled to a proximal end of the body. A free end of the first anchor ( 13 )...
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7006761 |
Control device for DC motors
In order to design as inexpensively as possible a control device for DC motors which are provided with a commutator for feeding their motor windings which has at least four sliding contacts, this...
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6984916 |
Integrated commutator with sense magnet
A commutator 10 is equipped with a magnet 1 for use in detecting and diagnosing motor inefficiencies and problems as well as in adjusting motor parameters to impact motor operation. The...
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6979922 |
Commutator with integral oil throw and recovery structure
A commutator 100 for an electric motor includes a body 112 having opposing ends. Commutator bars 118 are attached to a periphery of the body. Oil throw and recovery structure 122 is...
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6975058 |
Commutator arrangement for a small electric motor
A commutator arrangement for a small electric motor with a capacitor ring disk having several capacitor elements, wherein the capacitor ring disk is made of a dielectric first ring disk (RS) on...
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6960863 |
Commutator for an electric machine
A commutator for an electric machine comprises a support member ( 1 ) made from an insulating molding compound, a plurality of metal conductor segments ( 3 ) disposed thereon in evenly spaced...
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6958563 |
Riser commutators
Rotary switches, and in particular riser-style commutators, are detailed together with featured strips from which they are made. Segments formed from the strips may include anchor notches and slots...
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6952067 |
Rotary electric machine and a method of producing the same
A surface of a commutator 5 is rubbed by a shakedown brush 21 other than ordinary brushes 11 to produce a carbon coat, whereby a shakedown process can be reduced or abolished.
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6949859 |
Commutator assembly for motor
A commutator assembly for a motor has a recessed portion formed to each commutator segment so that coils, which are pressed and deformed by bending the hooks of commutator segments, can be...
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6944933 |
Manufacturing method of a rotor of small motors
Each of the rotor magnetic poles is composed of a winding around a laminated core and each of both ends of each wound wire is connected to a commutator leg part coupled with a tip of a...
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6927521 |
Commutator and electric rotary device having the same
The commutator is capable of reducing contact resistance between the brush and a commutator, improving efficiency of an electric rotary device and restricting exhaustion of the commutator. The...
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6903481 |
Commutator for electric motors
The commutator has a cylindrical collector ( 1 ), disposed on a motor armature shaft, and electrical-contact means ( 4, 5 ), which during one rotation of the collector ( 1 ) touch at least two each...
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6894419 |
Current passing circuit board for rotary electric machine inserted in molded resin
One current passing circuit board is constituted by one metal plate in which a continuous current passing pattern that is to be separated in a plurality of current passing patterns is formed, and...
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6888285 |
Dynamo-electric machine and fan motor for vehicle
An electric rotating machine and a fan motor for vehicle are obtained, wherein variation width of current waveform resulting from occurrence of coils in a short circuit state is narrowed to reduce...
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6873083 |
Double brush assembly
A multi-brush cage assembly for a subfractional horsepower electric motor has two brushes 22, 23 received in separate chambers 24, 25 of the cage and urged by springs 26, 27 towards a...
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6873076 |
Electric drive unit consisting of an electromotor and an electronic module
An electric drive unit provides a simple and economical electrical connection of an electric motor and an electronic module. The commutator of the electric motor, a brush rocker ring arranged on...
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