Matches 251 - 300 out of 1145 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6674201 Spindle motor with an aerodynamic and hydrodynamic bearing assembly  
A spindle motor ( 10 ) including a stator component ( 16 ), a rotor component ( 18 ), including a hub ( 14 ) for supporting one or more discs, and a bearing assembly between tHe components, formed...
6674192 Dynamoelectric machine  
Slip rings are fixed to an outer circumference of a shaft axially inside a rear-end bearing, brushes are disposed so as to contact outer circumferential surfaces of the slip rings, a sensor rotor...
6669416 Driving head for the numerically controlled setting movements of a tool spindle or workpiece table around at least one axis of rotation  
A driving head for the numerically controlled setting movements of a tool spindle or workpiece table around at least one axis of rotation. The basic structure of the driving head comprises a...
6671125 Fluid seal and bearing with same  
A fluid seal is disposed in a radial gap between a shaft of a motor and a hub rotatably held about the shaft, for preventing contaminates such as oil dusts and the like within the motor from...
6664685 High adhesion, wear resistant coatings for spindle motors in disk drive/storage applications  
A disc drive storage system including a housing having a central axis, a stationary member that is fixed with respect to the housing and coaxial with the central axis, and a rotatable member that...
6661150 Motor having stator with L-shaped salient poles  
A motor comprises a base to rotatably support a rotor and a ring-shaped magnet having a magnetic pole segment which is S-pole shaped and a magnetic pole segment which is N-pole and which are...
6661142 Motor device wherein accurate sizing is possible  
A motor device, in which decentering during rotation of a disk can be prevented, is provided with a bearing unit including a cylindrical bearing and a flange formed integrally with each other, the...
6661135 Multi-pole high speed generator with a modular rectifier circuit  
A multi-pole high speed generator includes a rectifier module assembly that is dimensioned to be mounted within the hub of a high speed generator exciter armature includes a rectifier module...
6657339 Method for setting gaps in hydrodynamic bearings  
A method for setting a gap in a hydrodynamic bearing of a disc drive spindle motors and a motor having such a bearing gap. The method comprises mounting a rotor hub having a central journal sleeve...
6657342 Spindle motor having dynamic pressure bearing  
A spindle motor preferable for hard disk drive (HDD) is composed of a radial dynamic pressure bearing portion constructed by a periphery of a shaft and a sleeve and a thrust dynamic pressure...
6653755 Radial air flow fan assembly having stator fins surrounding rotor blades  
A fan assembly is described having a circular arrangement of fins located around a circular arrangement of blades. Air leaving tips of the blades has high velocity to efficiently break down a...
6654213 Stator and bearing fixing structure of a motor  
A stator and bearing fixing structure of a motor includes a housing provided with a shaft seat having a bottom provided with a bottom stop member and having an outer wall provided with multiple...
6651310 Method of manufacturing aluminum rotor and motor incorporating the same  
A method of manufacturing an aluminum rotor and motor incorporating the rotor where after a solvent cleaning step of a rotator body using a chlorine-family solvent, an alkaline degreasing step...
6638019 Ceiling fan  
A ceiling fan has a stator 38 rigidly mounted to a shaft 33 and a rotor 40 rotatably mounted to the same shaft about the stator. The shaft is rigidly mounted to a housing. The rotor is...
6636007 DC brushless vibration motor  
A DC brushless vibration motor is disclosed to comprise of a stator, a rotor, a drive circuit and a casing. The stator has an upper magnetic pole piece, a lower magnetic pole piece and a stator...
6630758 Motor with a stationary shaft with formed knurled grooves on shaft and/or housing  
A motor comprises a rotor, a stator, and a shaft wherein one of the stator and the rotor is provided with a housing, a rolling bearing is provided between the housing and the shaft and having an...
6630764 High performance brushless motor and drive for an electrical vehicle motorization  
The system includes a permanent magnet three-phase motor and an electronic current controlled inverter by pulse width modulation. The motor has twenty-two poles and twenty-four slots, three phases...
6628028 Small and flat vibrational motor having impact-resistant structure  
A bearing supporter and stator supporter concentric with the bearing supporter and for being mounted with a stator assembly are provided on a motor base. Around the bearing supporter, lower faces...
6624541 Stator with a radial winding and method for manufacturing same  
A stator with a radial winding and a method for manufacturing such a stator provides a plurality of pole plates made of a magnetically conductive material. Each pole plate comprises a hub and at...
6617729 Light deflecting electric motor with oscillation preventing means  
A light deflecting electric motor includes a stator assembly including a base, a fixed shaft fixed to the base and a stator mounted on the base, a rotor assembly including a rotating member...
6617720 Integrated paper pulp and process machinery having integrated drive and control and methods of use thereof  
The invention pertains to equipment and methods in which the rotatable drive member of a variable speed motor, such as a switched reluctance motor, carries a rotatable pulp processing element ( 10...
6617721 High speed spindle motor  
The present invention is directed to a high speed spindle motor comprising a stator assembly including a stator having multiple conductors that create a plurality of magnetic fields when electrical...
6617740 D.C. PM motor and generator with a stator core assembly formed of pressure shaped processed ferromagnetic particles  
A d.c. PM motor and corresponding generator having a stator core assembly which is formed of a molded or pressure shaped processed ferromagnetic particulate material. The low permeability...
6614138 Stator interconnect ring  
A spindle motor incorporates a hollow shaft and a prewound stator having an interconnect ring attached to one end of the stator assembly. The interconnect ring is preferably a printed circuit or...
6611074 Array of electromagnetic motors for moving a tool-carrying sleeve  
An array ( 10 ) contains a rotary electromagnetic motor ( 11 ) and/or a linear electromagnetic motor ( 12 ) that is (are) attached to a tool-carrying sleeve ( 19 ) of a machine tool that carries...
6608410 Motor having shaft-grounding arrangement  
A DC motor has a conductive case and an arrangement for electrically connecting the shaft and case of the DC motor that is grounded. The arrangement includes a conductive member and a pressing...
6603225 Brushless spindle DC motor as an actuator to create radial force  
An apparatus for stabilizing the spin axis of a rotating system, the rotating system having a rotor and motor means to cause rotation of the rotor about the spin axis and a magnet, windings, a...
6590306 Electric motor driven wheel  
A motor scooter embodying an improved electric motor driven wheel. The electric motor for driving the wheel is quite compact and is designed so as to be nested within the disk of the wheel. The...
6586856 Spindle motor with sleeve for hard disc drives  
The invention relates to a spindle motor for solid-plate running gears with a stator, a rotor, the shaft of which is turnably borne with the aid of rolling bearings with respect to the stator, and...
6580190 Circumferential confronting type motor  
A circumferential confronting type motor includes an armature core that has drive coils wound around its plurality of poles, and a drive magnet positioned opposite to the armature core in the...
6580186 Balance correcting method for a high-speed rotatable body, a dynamic pressure bearing, and an optical scanning apparatus utilizing the dynamic pressure bearing  
A balance correcting method, a dynamic pressure bearing, and an optical scanning apparatus. For balance correction a method of attaching weight to the rotatable body and another method of partly...
6577034 Geared motor  
A spline is provided on a hollow shaft, and the key in the spline can couple directly a shaft to be driven of an external apparatus. Screw blocks rotational torque, thus screw is desirably located...
6574023 Light-beam deflecting apparatus, manufacturing method of light-beam deflecting apparatus and image-forming apparatus  
A light-beam deflecting apparatus is provided in which a polygon mirror is pushed against a flange to hold it stationary. The light-beam deflecting apparatus includes a base member; a polygon...
6570281 Structure for fitting generator stator to engine  
A structure for fitting a generator stator to an engine is provided which allows generator stators having different shapes to be fitted selectively to a common engine main body. In order to...
6565326 Heat-dissipating fan structure  
A heat-dissipating fan structure comprises a frame having a through-hole. An air inlet and an air outlet are respectively defined in two ends of the through-hole. A support section is provided in...
6566776 Spindle motor with sealing, flexible support film  
The invention relates to a spindle motor having a sealing support film which prevents exchange of air between the interior and surroundings of the spindle motor. In spindle motors for hard disk...
6563242 Slim motor and devices mounting the same motor  
A slim motor good for a portable device includes a frame, pipe, magnet, coil, shaft, first bearing and a second bearing (inside bearing). The pipe is disposed on an inner wall of the cylindrical...
6559573 Spindle motor and pivot assembly  
A shaft 2 of a spindle motor is composed of a steel material including 0.20 wt % of C, 0.35 wt % of Si, 8.00 wt % of Mn, higher than 0 and equal to or less than 0.05 wt % of P, 0.15 wt % of S,...
6545376 Three-phase hybrid type stepping motor  
In the three-phase hybrid type stepping motor according to the present invention, the small stator teeth formed on the tip end of the stator pole are classified to sets of two or three small teeth,...
6545379 Motor provided with flexible circuit board  
A motor includes a stator core mounted to a base frame and includes salient pole sections extending radially from the stator core and each of the plurality of salient pole sections is provided with...
6545378 Electric spindle motor with magnetic bearing and hydrodynamic bearing  
An electric spindle motor for use in precision instruments such as hard disk drives comprises a stationary sub-assembly and a rotary sub-assembly movable relative to the stationary sub-assembly for...
6534888 Electric motor intended to be fixed to a printed circuit board  
In an electric motor intended to be fixed to a printed circuit board, provision is made for it to have at least one expanding dowel ( 4 ), for it to be possible for the motor ( 1 ) to be fixed to a...
6534946 Synchronous AC motor  
The invention relates to a mains-commutated, synchronous AC motor ( 1 ) with permanent-magnet excitation, which is configured as an external-rotor motor with a permanent-magnet external rotor ( 6 )...
6534890 Disc drive spindle motor having reduced acoustic noise  
A disc drive spindle motor for reducing the idle noise of a disc drive includes a stator having a first cylindrical surface for contacting a motor mount of the spindle motor. The motor mount...
6534889 Motor with rotator having shaft insertion sections with different internal peripheral surfaces  
A motor has a rotatably supported rotor shaft and a rotator that rotates together with the rotor shaft. The rotator includes a shaft insertion section that has an internal peripheral surface and a...
6531796 Motor having high heat resistant coated terminals  
To facilitate the assembling work of a motor and to enhance the reliability without limiting the structure of the motor, the iron core 12 of a stator 14 is insulated by insulators 15 and 16...
6528909 Motor shaft having an integral heat pipe  
A spindle motor assembly having a shaft with an integral heat pipe. The shaft with the integral heat pipe improves the thermal conductivity of the shaft and the spindle motor assembly. The shaft...
6525441 Spindle motor having disc mounting portion  
A spindle motor includes a rotor case in which a shaft support is located at the center of the rotor and disc mounting guides are located around the shaft support at a predetermined interval, a...
6522038 Integrated air control valve using contactless technology  
A control valve assembly for the rotary or linear actuation of control valves using contactless technology and the use of direct integration of electronic componentry into a lead frame...
6519113 Spindle motor assembly with polymeric motor shaft and hub for rotating a data storage disk  
A spindle motor assembly ( 18 ) includes a polymeric motor shaft ( 20 ), a polymeric hub ( 22 ) to support a rotating disc ( 24 ), and a stator ( 40 ) disposed in an internal cavity defined by the...
Matches 251 - 300 out of 1145 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >