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5726513 |
Motor governor mounting assembly
An improved connection assembly for connecting a centrifugal governor to the shaft of a fractional horsepower electric motor. The end of the rotor shaft to which the governor is mounted is provided...
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5723927 |
Dynamic pressure bearing spindle motor
A dynamic pressure bearing spindle motor includes a housing; a sleeve fixed to the housing and having a projecting lip; a rotor hub rotatable with respect to the housing and having a stopper which...
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5717268 |
Electric motor with tachometer signal generator
A permanent magnet electric motor including a rotor having an annular arrangement of field magnets for rotation around an axis relative to a stator. An annular FG magnet arrangement affixed to an...
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5715116 |
Spindle motor for driving memory disk
In a spindle motor for a driving a memory disk, a closed space is formed by a sleeve, an end portion of a shaft and a thrust plate. The closed space is connected to outside open space by a...
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5714828 |
Electric motor having a stator and a rotor
An improved spindle motor, particularly for a hard-disc drive, having a stator in the form of a cylindrical coil carried by a mounting plate and a permanent magnet rotor carried on a rotatable hub....
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5714812 |
Combined energy and data storage system
A data terminal utilizes a rotating flywheel system for energy storage and storage and retrieval. Energy storage and data storage systems are combined into a single system.
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5711221 |
Transfer cylinder with electromotive drive unit
Transfer cylinder with an electromotive drive unit includes a common bearing for a rotor of the electromotive drive unit and for the transfer cylinder, the bearing being disposed in a unit of a...
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5708310 |
Permanent magnet type stepping motor
A permanent magnet type stepping motor wherein and that at least one pitch formed by two adjacent small pole teeth of each of stator magnetic poles is different from other pitch formed by other two...
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5705866 |
Spindle motor
A spindle motor comprises a stationary shaft, a rotor hub having an annular rotor magnet and rotatably mounted by bearings to the stationary shaft, a stator fixedly mounted to the stationary shaft...
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5705868 |
Spindle motor connector having supported electrical leads
An improved spindle motor connector for a disc drive. The spindle motor connector includes a central housing having socket connectors for mating engagement with connector pins of the spindle motor....
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RE35702 |
Compact motor mount for information storage devices
A compact motor mount for cassette drive systems includes a base plate in the form of a laminate that includes at least one planar layer of ferromagnetic material sandwiched between two printed...
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5698915 |
Spindle motor
A spindle motor comprising a bracket, a shaft member provided on the bracket, a rotor rotatably mounted to the shaft member through a pair of bearings, a rotor magnet mounted to the rotor, a stator...
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5698921 |
Permanent magnet type motor
A permanent magnet type motor comprising: a field magnet including permanent magnet arranged inside a yoke in an 8-pole structure; and an armature including an armature coil and armature...
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5698919 |
Integral bearing type electric motor
An integral bearing type electric motor is disclosed, which comprises a bearing body including a spindle, a sleeve surrounding the spindle, an inner or outer ring fitted in or on the spindle, and...
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5694268 |
Spindle motor having overmolded stator
A disc drive spindle motor for rotating at least one disc in a data storage device includes a base, a shaft, a rotor and a stator. A bearing interconnects the rotor with the shaft and allows the...
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5691584 |
Wheel motor for vehicles
A wheel motor for a vehicle is provided in which an electric motor is arranged in a central space defined in a wheel, to rotatably drive the wheel. A gear reducer is also arranged in the central...
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5691588 |
Drive arrangement for a hybird vehicle
A drive arrangement for a hybrid vehicle with an electric motor, which has a rotor with a hub body and a stator, and with two engagable and disengagable dry-disk clutches. Each of the dry-disk...
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5689146 |
Conical bearing system for spindle motors
A conical bearing system includes a first conical bearing having an integral shaft and a second conical bearing defining a bore having a shaft mating bore section and a threaded bore section. The...
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5686771 |
Electric motor
In an electric motor, its motor frame has a shaft hole, a shaft is fitted in the shaft hole in such a manner that its one end potion is in the shaft hole while the other end portion is extended...
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5684348 |
Automatic damping and transient supressing improvement in synchronous motors and generators
A synchronous motor/generator is modified by mounting the conventional rotor on a sleeve that rotates freely on the main shaft rather than being fixedly mounted on the shaft. Limits to this...
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5675196 |
High speed ten pole/twelve slot D.C. brushless motor with minimized net radial force and low cogging torque
A ten pole/twelve slot brushless DC motor for a disk drive spindle includes a base; a cylindrical rotor structure rotating relative to the base and a generally symmetrically slotted stator...
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5675206 |
Slim-line brushless motor
A slim-line direct current (DC) brushless motor for automotive and HVAC applications utilizes a sleeve bearing assembly to rotatably couple an exterior rotor to an interior stator. The rotor...
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5672924 |
Robots using modular direct drive motors
A direct drive robot motor may be used for the arms, legs, eyes and fingers of a robot. The motor comprises a rotor, having a permanent magnet, and a tubular arm portion, which is integral with the...
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5670837 |
Disk drive spindle motor having split windings for each phase
A reduced size brushless DC motor preferably for use as a disk drive spindle motor includes a rotor having two sets of permanent magnets, and a stator having separate portions corresponding to the...
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5662405 |
Light-emitting pedal for bicycles
A pedal for a bicycle including a body portion formed with a plurality of recesses on a circumference thereof, the body portion being formed with an opening at a central portion thereof, a...
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5663604 |
Brushless motor
A brushless motor for use as a fan motor or the like has a housing, a bearing tower provided inside the housing, a stator fixed on a circumference of the bearing tower, a rotor having a shaft...
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5663602 |
Spindle motor
The inner wall of a hub has a step surface between an upper bearing mounting surface and a magnet mounting surface. A spacer of ring-like shape is directly mounted to the step surface of the hub...
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5663603 |
Rotary element driving device
A disk drive device includes a device stand on which a spindle motor and a device control board are fixedly mounted. The device stand has a motor mounting section which is embossed so that the...
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5661351 |
Disc drive having a brushless DC drive motor with an external rotor for supporting one or more storage discs
A disc drive having a housing which encloses a clean room that is provided with a brushless DC drive motor having an external rotor and three pole shoes on a substantially ring-shaped stator for...
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5654598 |
Brushless motor with inside mounted single bearing
A direct current (DC) brushless motor for automotive and HVAC applications utilizes a single angular contact bearing assembly to rotatably couple an exterior rotor to an interior stator. The single...
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5652473 |
Rotary assembly including in particular radial support means and a magnetic axial abutment
A rotary assembly comprising a stator and a rotor of axis Δ, rotary drive means, radial support means, and an active magnetic axial abutment comprising a magnetic circuit in two portions, namely a...
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5648693 |
Disk driving motor with low noise lead wire arrangement for frequency generator
A stator includes a frequency generating pattern, a driving coil composite pattern and lead lines. A rotor includes a frequency generating pattern, a driving coil composite and lead lines. A rotor...
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5635780 |
Instrument holder and method for inspection of a dynamo-electric machine in a gap between a stator and a rotor and dynamo-electric machine having the instrument holder
A dynamo-electric machine includes a stator having a ferromagnetic yoke with an internal recess and a rotor disposed in the internal recess defining a gap between the yoke and the rotor. An...
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5634622 |
Remote controllable television viewing stand
A remote controllable television viewing support including a rigid base; a rigid platform positioned above of the base and having a substantially horizontal longitudinal axis, a substantially...
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5635781 |
Brushless motor with an improved connector terminal
A brushless motor includes a coil for energizing a motor to thereby rotate a rotor of the motor, a core having a plurality of projection poles around which the coil is wound, a terminal pin serving...
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5635783 |
Brushless direct current motor
The present invention relates to a brushless direct current motor which includes a second magnet mounted on an inner part of the motor bush in such a way so as to allow an attractive engaging force...
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5633544 |
Wheel motor
A wheel motor for a vehicle has an electric motor which is arranged in a central space defined in a wheel, to rotatively drive the wheel. A gear reducer is also arranged in the central space of the...
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5625241 |
Carousel electric generator
A permanent magnet generator or motor having stationary coils positioned in a circle, a rotor on which are mounted permanent magnets grouped in sectors and positioned to move adjacent said coils,...
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5623382 |
Disk driving apparatus
A disk driving apparatus solves such problems that the position of a rotor is unstable and likely to float, and the rotor is displaced when an excessive acceleration is applied thereto, so that a...
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5610457 |
Brushless motor with hall elements for controlling drive circuit and for detecting a position of rotor by use of magnetic flux varying means
A brushless motor including: a rotor casing having a cylindrical wall with an opening, the rotor casing holding a magnet therein, the magnet having an exposed portion which is exposed through the...
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5607329 |
Integrated motor/marine propulsor with permanent magnet blades
An integrated motor/marine propulsor is provided having an electric motor apted for converting electrical energy into hydropropulsive energy. The electric motor comprises at least one stator...
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5608278 |
Self-pumped fluid bearing with electromagnetic levitation such as for a light beam deflector
A fluid bearing includes a rotor and a stator. A DC motor drives the rotator. The DC motor has (1) a multi-phase set of coils on one of the rotor and stator and (2) a multi-pole magnet on the other...
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5606207 |
Power generating apparatus for a bicycle
A power generating apparatus for a bicycle, in particular, a racer type bicycle such as a road racer and a mountain bike, is disclosed. The power generating apparatus of the present invention...
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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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5600191 |
Driving assembly for motor wheels
A driving assembly for motor wheels including a plurality of permanent magnets arranged around the outer periphery of a securing element on an axle for forming a stator. When electric currents are...
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5598047 |
Electric motor for driving magnetic disk
A cylindrical shielding plate is provided on an inner circumference of the cylindrical recess formed on the bracket of an electric motor of a magnetic disk drive, and an open sector of the stator...
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5598048 |
Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor
An apparatus for rotatably journaling a rotor of a flat spindle motor about a stator comprising a spindle magnet disc disposed on the rotor assembly of the flat spindle motor and journaled about...
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5596235 |
Spindle motor with seal structure
A spindle motor comprises a stationary shaft, a rotor hub rotatably mounted by ball bearings to the stationary shaft, and annular sealing members disposed between the outer surface of the...
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5594606 |
Disk storage drive for maintaining precision during thermal variations
A disk storage drive is provided with a brushless drive motor having a stator (34) with a winding. An external rotor housing (32) including a permanent magnet (33) coaxially surrounds the stator...
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5585711 |
Generator arrangement for producing electrical energy and for use in vehicles with anti-skid systems
A method of producing electrical energy from rotary motion of an axle of a vehicle utilizes a generator assembly including a generator coupled to the axle. The method includes determining the rate...
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