Electrical generator or motor structure inventions 03/06

20060066153 - Synchronous machines: P

20060066154 - Resonance drive actuator: A resonance drive actuator includes a casing; an electromagnetic drive section supported in the interior of the casing; a plunger to be reciprocatively driven at least in a rotational direction or in an axial direction by the electromagnetic drive section; an output shaft on which the plunger is fixed; and...

20060066155 - Method and system for cooling a motor or motor enclosure: A method and system of cooling an enclosure or motor is disclosed. An exemplary permanent magnet electric motor is formed with an external stator and an internal rotor. The motor controller is in thermal proximity to the motor but is thermally isolated from the motor by an air chamber. In...

20060066159 - Fluid-passage built-in type electric rotating machine: A fluid-passage built-in type electrical rotating machine, which comprises a rotor fixed to a rotating shaft by means of a bearing; a stator in rotating relation to the rotor with a gap therebetween; a housing surrounding the stator; a pump turbine, fixed to one end of the rotating shaft, for...

20060066158 - High mechanical strength electrical connection system and method: In accordance with one embodiment, the present technique provides a bushing that is configured to electrically and mechanically couple a conductor bar of a rotor assembly to an end ring of the rotor assembly. The exemplary bushing has an interior surface that is configured to abut against the conductor bar...

20060066156 - Motor rotor cooling with rotation heat pipes: A heat pipe is partially-filled with a liquid, such as water, and is used to transfer heat from a rotating element, such as a rotor, via phase change and internal recycle of the liquid. Several heat pipes may be disposed radially around the rotating axis of the rotating element. The...

20060066157 - Rotor for an induction device: According to one embodiment, the present invention provides a rotor assembly. The exemplary rotor assembly includes a plurality of rotor laminations, which cooperate to form a rotor core, capped at each end by end members. Extending through the rotor core and the end members, a plurality of rotor channels is...

20060066160 - Ac generator for vehicle: An AC generator including positive-electrode side and negative-electrode side support members disposed between a casing body and a cooling fan for supporting one-way conducting elements at the positive-electrode side and the negative-electrode side respectively, the positive-electrode side support member and the negative-electrode side support member being arranged on substantially the...

20060066161 - Axial fan motor and cooling unit: Disclosed is an axial fan motor for air-cooling a heat sink of a heating element and thermally connected to the heat sink. The casing of the axial fan motor is formed of a plurality of laminated metal plates. The plurality of metal plates include a single first metal plate and...

20060066162 - Motor lead sealing system and method: An assembly having an externally threaded pipe nipple with an inserted grommet couples to a motor frame and to a conduit box, supporting the conduit box to the motor frame and providing a pathway for the motor lead through the grommet and nipple into the conduit box. T conduit box...

20060066163 - Apparatus and method for flywheel based cooling: In accordance with exemplary embodiments, the present invention provides a transient power source that includes a flywheel that stores kinetic energy. In the event of a loss of main or operating power, the kinetic energy stored in the flywheel is converted into electrical energy. As one example, the rotation of...

20060066164 - Multi-mode vibration generator for communication terminal: A multi-mode vibration generating device for a communication terminal includes a first vibration generator and one or more second vibration generators. The first vibration generator includes a first coil assembly and a first magnet and generating a vibration of a given direction by an interaction between an electric field generated...

20060066165 - Fan motor support: A fan motor support bracket has a central body portion and first and second end portions upwardly offset from the central body portion. First and second transition portions extend respectively between the first and second end portion and first and second ends of the central body portion. The central body...

20060066166 - Rotor body for the rotor of an electric machine and a method for the manufacture of a rotor body: A rotor body for the rotor of an electric machine having at least one rotor lamination which is formed in the way of a strip having a series of projections along a longitudinal edge of the strip and bent in the plane of the strip to form a ring, the...

20060066167 - Rotating electrical machine and coil: A stator coil, being a rectangular coil, is wound on a salient pole, striding across a plurality of slots, while being inserted sequentially through the inlet of a predetermined slot of the stator core. The stator coil comprises two slot inserts and to be inserted into the slot; two coil...

20060066168 - Bonded rotor laminations: In accordance with an exemplary embodiment, the present technique provides a rotor assembly formed of a plurality of rotor laminations that are bonded to one another. Specifically, the rotor laminations are bonded to one another via a bonding agent disposed between end surfaces of adjacent rotor laminations. Advantageously, the bonding...

20060066169 - Electric motor having different stator lamination and rotor lamination constructions: In accordance with one exemplary embodiment, the present technique provides an electric motor having a stator core that is formed of a plurality of stator laminations and a rotor core that is formed of a plurality of rotor laminations. In the exemplary motor, the rotor laminations have mechanical and/or electrical...

20060066170 - Built-up stator assembly: A built-up stator assembly comprises a plurality of magnetic guide members and each of the magnetic guide members further comprises a frame arm, a rib and a magnetic pole part. The frame arm with two ends provides a joining part at the two ends respectively. The rib with an inner...

20060066172 - Permanent magnet type generator: A permanent magnet type generator includes a rotor having 4n (n is a positive integer) permanent magnet poles disposed in a circumferential direction of the rotor to have circumferential gap between adjoining poles and a stator that has 3n teeth and coils wound around the teeth. The stator core includes...

20060066171 - Stator core for rotating electric machine: An outer rotor type split stator core which can be simply assembled at one time of core elements arranged in a circular form and possesses high rigidity, wherein core elements divided into magnetic pole units composed of yokes, a magnetic pole and a claw are coupled shiftably with one another...

20060066173 - Brushless direct-current motor of radial core type having a structure of double rotors and method for making the same: A radial core type double rotor brushless direct-current motor is provided in which a double rotor structure is employed with inner and outer rotors which are doubly disposed and thus a stator core is completely divided. The motor includes a rotational shaft which is rotatably mounted on a housing of...

20060066174 - Electrostatic actuator and image pickup apparatus: In an electrostatic actuator, stoppers are provided on a driving electrode substrate. Stoppers are provided so that when a first movable section moves in the direction in which a penetrating portion penetrates a stator frame, a gap is created between driving electrodes and a movable-section driving electrode, with the stoppers...

20060066175 - Piezoelectric resonator, method for manufacturing the same, piezoelectric filter, and duplexer: A piezoelectric resonator suitable for use in a high frequency band is provided, in which variation in the piezoelectric material is reduced, variation in performance is reduced, and production can be performed without the need for a polarization treatment step. In the piezoelectric resonator, a piezoelectric material made of a...

20060066176 - Piezoelectric/electrostrictive film type device and method of manufacturing the same: There is disclosed a piezoelectric/electrostrictive film type device 1 provided with: a thin substrate 2 made of a ceramic; and a piezoelectric/electrostrictive operating portion 5 disposed on the substrate 2 and constituted by successively laminating a lower electrode film 3a, a piezoelectric/electrostrictive film 4 containing a large number of crystal...

20060066177 - Actuator, and transporting apparatus, movable apparatus and device provided with the actuator: An actuator includes an apex section which can make a contact with a paper, a thin plate which has two inclined sections each extending from the apex section, a piezoelectric layer which is arranged on each of the inclined sections, and an individual electrode which is provided to each of...

20060066178 - Piezoelectric actuator with strain-reducing structures: A piezoelectric actuator has stacked ceramic layers of a piezoelectric material and electrodes situated between the layers to form a piezoelectric stack and having at least one structure that reduces the mechanical strain occurring in the piezoelectric stack. The strain reducing structure is comprised of a strain-reducing layer equipped with...

20060066179 - Energy efficient vibration driven motor: A motor includes a resonator and a vibration source coupled to the resonator. The vibration source can be a piezoelectric vibration source. A drive shaft is coupled to the resonator via a linkage. The vibration source(s) impart a vibration along the resonator such that a lateral displacement of the resonator...

20060066180 - Piezoelectric/electrostrictive porcelain composition, piezoelectric/electrostrictive article, and piezoelectric/electrostrictive film type element: m

20060066181 - Transducer assembly: The present invention provides a piezoelectric assembly, comprising at least one piezoelectric element and at least one electrode assembled to lie between an energy delivery member and a pre-loading member, characterised in that the electrode further comprises, where in contact with the piezoelectric element, a coating of a material which...

20060066182 - Piezoelectric actuator: The invention relates to a piezoelectric actuator (1) comprising a stack of a plurality of individual piezoelectric actuator elements (2, 2′, 2″) which are arranged between inner electrodes (3, 3′, 3″). Said piezoelectric actuator comprises a first metallisation strip (4) and a second metallisation strip (5), the inner electrodes (3,...

20060066183 - Elastomer actuator and a method of making an actuator: A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g. an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and...

20060066184 - Ultrasonic transducer and manufacturing method thereof: An ultrasonic transducer comprises: an acoustic matching layer including at least a layer made up of a hard material; a piezoelectric member of which the length dimension is shorter than this acoustic matching layer, which is fixed and disposed at a predetermined position of a layer made up of the...

20060066185 - Piezoelectric resonator element and piezoelectric device: A piezoelectric resonator element includes a base portion formed of a piezoelectric material, a plurality of resonating arms formed integrally with the base portion and extending parallel to each other, a longitudinal groove formed along a longitudinal direction of each of the resonating arms, and an electrode for driving formed...

20060055251 - Tubular linear motor for electrical discharge machine: A tubular linear motor for electrical discharge machine generally comprises: a stator, a forcer, a set of coils and a hollow central shaft. The forcer is mounted onto the hollow central shaft, the forcer and the hollow central shaft are slidably disposed at the axial center of the stator, the...

20060055252 - Voice coil motor apparatus for positioning: A voice coil motor apparatus for positioning is disclosed. The voice coil motor is used by the auto-focus lens control module of a miniature camera. The apparatus contains a voice coil motor, a position feedback sensor, and a positioning controller. The voice coil of the voice coil motor can be...

20060055253 - Stepping motor: A small-sized and low-cost stepping motor having a short length in the axial direction and a high output is provided. The stepping motor includes a stator made of a soft magnetic material integrally having first and second outer magnetic poles, a bobbin body integrally having a first bobbin externally fitted...

20060055255 - Electric rotating machine: An electric rotating machine capable of lowering the temperature of a rotor disposed, wherein at least one of closed ventilation loops for cooling is formed, one of the loops constituting a ventilation passage communicating with an exhaust side through a heat source of the end of the generator to a...

20060055254 - System and method for managing air flow in a motor: Certain exemplary embodiments can comprise a system for managing air flow within an induction motor, such as in the rotor assembly of the motor. The system can comprise a gap blocker to substantially impede air flow through radial apertures defined by and/or near end regions of the rotor conductor bars....

20060055256 - Method for ventilating a motor: Certain exemplary embodiments comprise a system comprising: a motor stator comprising: a motor frame comprising a core shell adapted to surround a stator core comprising: a plurality of panels; a plurality of apertures located in one or more of said panels; and a first plurality of non-destructively removable plates adapted...

20060055257 - Motor and method for manufacturing motor: A holder-side connecting portion 10c provided on a brush holder 10 and a connector-side connecting portion 16b provided on a connector portion 16 are electrically and mechanically connected with each other. The holder-side connecting portion 10c and the connector-side connecting portion 16b are clamped between a yoke housing 4 and...

20060055258 - Motor gear box with grommets: A motor gear box has a direct current motor, a first bevel gear, a second bevel gear, a pinion transfer gear, at least one cluster gear, an output gear, an output shaft, and a collar abutting against the output gear and surrounding the output shaft. The motor gear box also...

20060055260 - Fault tolerant homopolar magnetic bearings: A magnetic bearing for supporting a spinning shaft in the radial direction and/or the axial direction includes a rotor formed on the shaft and a stator positioned around the rotor. Poles in the stator creates a magnetic field that supports the rotor. The number of poles is at least sufficient...

20060055259 - Fault-tolerant magnetic bearing position sensing and control system: A magnetic bearing sensing and control system and method provides increased tolerance to faults associated with the associated displacement sensors. The system includes a plurality of redundant displacement sensor sets to provide dual or triple displacement sensor redundancy, or higher if desired, and implements a process for determining when one...

20060055261 - Multiple stator charging system: A charging system comprising a rotor with at least two rows of magnets affixed to the inside surface of the sidewall of the rotor and at least two stators connected in parallel or in series with each stator having a plurality of pole pairs and the rotor having a plurality...

20060055262 - Flat motor with brushes: A flat electrical machine having high efficiency by configuring the coil windings so that adjacent edges thereof are closely adjacent, extend radially and do not overlap circumferentially. The thickness of the windings varies along their length and thee facing magnets are also tapered to maintain a constant and small air...

20060055263 - Rotor of bldc motor: Disclosed is a rotor of a BLDC motor including a frame rotatably disposed on an inner circumference of a stator, rotor teeth connected to the outer circumference of the frame in the radial direction at regular intervals, and magnets fixed between the rotor teeth, and arranged in the radial direction...

20060055264 - Method of making a rotor for an electric motor: A method of making a rotor for an electric motor, the rotor including a magnet assembly and a bearing, the bearing being adapted for supporting the rotor on a shaft whilst permitting rotation of the rotor about the shaft, the method including the steps of engaging the bearing with a...

20060055265 - Printed circuit board motor: A printed circuit board motor is disclosed. The motor comprises a rotor plate embedded with magnets, an axle, and a printed circuit board stator. The printed circuit board comprises two conductors printed on the same surface or on opposite surfaces of the printed circuit board The two conductors produce alternating...

20060055266 - Sintered ring magnet: A sintered ring magnet (10) is produced through processes of magnetically orienting magnetic powder by applying a magnetic field, pressing the magnetic powder and sintering a ring-shaped powder compact (30) thus formed. The sintered ring magnet (10) has a generally cylindrical outer surface with surface corrugations formed by alternating hollows...

20060055267 - Rotor for rotary electric machine: A rotor for a rotary electric machine includes a rotor core made of magnetic material, and being in the form of a disk, and a plurality of magnet sets each including a pair of permanent magnets whose polarities are identical to each other. The magnet sets are arranged circumferentially in...

20060055268 - Magnetic circuit structure for rotary electric machine: A rotary electric machine includes a rotor including a plurality of magnet sections arranged along a rotational direction of the rotor so that polarities of the magnet sections change alternately, and a stator including armature coils, and being disposed to confront the rotor across an air gap. Permanent magnet flux...

20060055269 - Servo-drive system and continuous finishing system of press: A servo drive system of a press machine has a pair of servo motors which can generate necessary ram pressure by compositing and using a torque based on the same speed-torque characteristics. The servo motors are symmetric with each other in a mirror image manner. The servo motors are opposed...

20060055270 - Apparatus and method for dissipating a portion of the commutation derived collapsing field energy in a multi-phase unipolar electric motor: A multi-phase unipolar motor is configured such that each stator pole is formed with bifilar wound primary and inductively associated secondary windings corresponding with one phase. The primary winding at one stator pole corresponding with one phase is coupled with a secondary winding at another stator pole corresponding with another...

20060055271 - Flat motor with brushes: A flat electrical machine having high efficiency by configuring the coil windings so that adjacent edges thereof are closely adjacent, extend radially and do not overlap circumferentially. The thickness of the windings varies along their length and thee facing magnets are also tapered to maintain a constant and small air...

20060055272 - Stator for electric motor: A stator adapted for driving rotation of a rotor includes a stator body having a surrounding wall surface that surrounds a stator axis. A plurality of magnetic pole protrusions protrude radially from the surrounding wall surface relative to the stator axis, and a plurality of stator coils are respectively wound...

20060055273 - Screening assay based on rhe sod-3 promotor for the identification of compounds modulating akt or upstream regulators such as insulin igf-1 receptors: A traction system for lifts, escalators, moving walkways and aerogenerators, provided with an asynchronous motor with squirrel cage rotor with low start-up current and high performance, and an asynchronous motor to work in said traction system, the power and operating speed of which are scaleable, varying input frequency and voltage...

20060055274 - Stator of motor and method of manufacturing the same: A method of manufacturing a stator of a motor comprises the steps of bending at least one end of an electrical steel sheet to prepare a core sheet comprising a yoke part and at least one pole part bent from the yoke part, stacking a plurality of core sheets to...

20060055275 - Stator of motor: A stator of a motor having various shapes and capable of minimizing the manufacturing costs. At least teeth are manufactured by the iron powder metallurgy method. In order to obtain the overhang effect, the height of a tip of each tooth is lower than the height of a rotor and...

20060055276 - Keyed motor brushes: Round keyed brushes for electric motors. The brushes are formed from sintered material and the protruding key runs the length of the brush. The brush material is preferably carbon combined with copper and/or silver. Brush guides (or hoods) are screwed into an end bell, and keyways are then broached in...

20060055277 - Brush material for motor and manufacturing method thereof: A motor brush material contains copper particles dispersed and configuring particle group structure supported in inner pores of a sintered body containing carbon as a major component....

20060055278 - Step motor having stator with separated structure: A step motor includes a spindle, a magnet unit mounted around the spindle, and a stator assembly sleeved over the magnet unit. The stator assembly includes at least one coil-and-yoke unit having a coil support, a coil wound around the coil support, an outer tube sleeved over the coil, and...

20060055279 - Step motor having stator with separated structure: A step motor includes a spindle, a magnet unit mounted around the spindle, and a stator assembly sleeved over the magnet unit. The stator assembly includes at least one coil-and-yoke unit having a coil support, a coil wound around the coil support, and a pair of magnetic yokes mounted in...

20060055280 - Rotor for rotating electric machine: The present invention provides a dynamoelectric rotor enabling electromagnetic noise to be reduced by linking a facing tip end portion and root end portion of adjacent claw-shaped magnetic poles by a linking member and placing a field winding in contact with an inner peripheral surface of the claw-shaped magnetic poles...

20060055282 - Electrostatic actuator and image pickup apparatus: The present invention has a movable section guided by a stator so as to be movable in a direction in which a penetrating portion penetrates the stator. A film is provided on an area of the movable section which comes into contact with the stator when the movable section moves...

20060055281 - Microelectromechanical electrostatic actuator assembly: A MEMS electrostatic actuator assembly for connection to a DC voltage supply includes a MEMS device and a capacitive element. The MEMS device has a conductive member and a restoring force element. The conductive member is continuously movable between first and second positions in response to the electrostatic force produced...

20060055283 - Surface acoustic wave device: A surface acoustic wave device has a high electromechanical coefficient and reflection coefficient, and also has an improved frequency-temperature characteristic that is achieved by forming a SiO2 film on an IDT so as to prevent cracking from occurring on a surface of the SiO2 film so that desired properties can...

20060055284 - Driving device: The driving device has a piezoelectric element 32, a supporting member 16 fixed to one end of the piezoelectric element 32, a driving shaft 18 fixed to the other end of the piezoelectric element 32, a movable member 20 that is movably held on the driving member 18, and a...

20060055285 - Method and devices for driving a body: The invention relates to a method for relative driving of bodies on the basis of electromagnetic or piezo-electrical conversion of electricity into energy and/or movement. Use is made of intermediate bodies for the conversion into mechanical energy. The invention also relates to a linear drive assembly for a shaft or...

20060055286 - Surface acoustic wave die methods and systems: A surface acoustic wave die system and method are disclosed herein, including a surface acoustic wave sensor comprising one or more surface acoustic wave die disposed and hermetically sealed between a base and a cover. An adhesive is generally for securing one or more of the surface acoustic wave die...

20060055287 - Piezoelectric actuator and micro-electromechanical device: A piezoelectric actuator includes a first beam including a first bottom electrode, a first piezoelectric film on the first bottom electrode, and a first top electrode on the first piezoelectric film, a fixed end assigned at an end of the first beam and fixed on a substrate, a connecting end...

20060055288 - Method for the production of monolithic multilayer actuator monolithic multilayer actuator made of a piezoceramic or electrostrictive material and external electrical contact for a monolithic multilayer actuator: The invention relates to a method for the production of a monolithic multilayer actuator, a corresponding monolithic multilayer actuator, as well as an external contact for a monolithic multilayer actuator. According to the invention specific microdisturbances are incorporated in the actuator structure along the longitudinal axis of the stack essentially...

20060049700 - Linear motor and linear moving stage device: A linear motor for giving thrust to a movable unit capable of linearly moving freely in one direction with respect to a stator, comprising a plurality of permanent magnets arranged on the base side by lining up a positive pole and a negative pole in the one direction; and a...

20060049698 - Lithographic apparatus and device manufacturing method: A substrate or a patterning device used in a lithographic apparatus and a lithographic device manufacturing method are presented. The substrate and patterning device are aligned with respect to a patterning beam and are movably supported by a support. Resonances in said support, however, may render the manufactured device unusable...

20060049697 - Split coil linear motor for z force: Methods and apparatus for enabling a coil to be used to provide a net force along more than one axis are disclosed. According to one aspect of the present invention, an actuator includes a magnet assembly and a coil assembly. The coil assembly moves at least partially within the magnet...

20060049699 - Synchronous permanent magnet planar motor: According to the invention, configurations of X-windings and Y-windings in a synchronous permanent planar motor are improved, X-windings and Y-windings overlap in the direction normal to the planar magnet array and distribute on the entire surface of the thrust core, such that effective wires in the X-windings and Y-windings are...

20060049701 - Linear actuator: The present invention is directed to provide a linear actuator capable of propagating magnetic force of a stator magnet within a yoke in a smooth manner so as to form a superior magnetic path. A linear actuator is provided with a moveable part facing a stator magnet provided together with...

20060049702 - Drum drive with damping device for damaping vibrations: The invention relates to a drum drive that delimits an interior space intended for receiving an electromotor for producing a rotating movement of the drum. The electromotor comprises a stator, shell and stator cap. The stator is turnably journalled about the shaft (7), wherein the drive comprises at least one...

20060049703 - Three-phase brushless motor: A three-phase brushless motor in one mode of the present invention is comprised of a rotation axis, a rotor yoke rotating around said rotation axis, a drive magnet formed into a ring shape and attached on said rotor yoke, said drive magnet having a plurality of magnetized poles at an...

20060049704 - Neutral-point terminal device for dynamoelectric machine: A neutral-point terminal device for use with a neutral point side bundle of wires in a polyphase winding of a dynamoelectric machine includes a metal sleeve and an insulating cap covering the metal sleeve. The metal sleeve is covered by the insulating cap so that distal ends of the bundled...

20060049705 - Vibrating motor and portable terminal apparatus using same: A vibrating motor including a stepping motor in which control is simple, large vibration is generated, and drive torque can be efficiently generated, and a portable terminal apparatus using the same are provided. The vibrating motor includes a single-phase annular stator coil, a stator yoke disposed to surround the periphery...

20060049706 - On-vehicle generator mounting device: An on-vehicle generator mounting device includes: a stay provided with a first insertion hole; a front side mounting leg and a rear side mounting leg of the generator, both being disposed on two ends of the stay; a second insertion hole provided through one of the mounting legs; a cylindrical...

20060049707 - Video line driver: Video line drivers that operate using a single external supply voltage, without the need for large external capacitors (e.g., 470 uF) on the output, are provided. In accordance with an embodiment, a video line driver includes a charge pump and a plurality of amplifiers. The charge pump uses the single...

20060049708 - Electromagnetic retarder for a vehicle: An electromagnetic retarder (1) for a vehicle includes a disc (20), a first rotor (5) and a second rotor (6), the disc being arranged to couple the first rotor and the second rotor to a transmission shaft of a vehicle. In order to facilitate fitting of this transmission shaft on...

20060049709 - Brushless direct current motor with chamfered magnet: A brushless DC motor with improved configuration of magnets attached to a rotor thereof. The brushless direct current motor includes a stator having coils for inducting magnetic flux according to applied electric current, and a rotor installed in the stator, and including a core in which a rotating shaft is...

20060049710 - Single phase induction motor: A single phase induction motor includes a stator, an induction cage rotor rotatably installed in a center portion of the stator and having a shaft fixed at its center; and a permanent magnet freely rotatably installed between the stator and the induction cage rotor and having a first magnetization portion...

20060049711 - Homopolar multi-frames (cylinders) generator-motor: The main disadvantage of homopolar generators, motors and engines is a small working voltage and a high working current which make it difficult to change parameters of the generators, motors, and engines such as torque, which is important, for example, in motor vehicles where the starting torque is very large....

20060049712 - Brushless permanent magnet wheel motor with variable axial rotor/stator alignment: A brushless permanent magnet electric machine with a fixed radial air gap is operated to a much higher speed than normal maximum speed by the reduction in effective magnet pole strength. Permanent magnets are supported on the inner surface of an axially movable cylindrical shell. A plurality of magnetic poles...

20060049713 - Permanent-magnet type synchronization motor and method of manufacturing thereof: In a combination of, for example, a rotor having eight magnetic poles and a stator having twelve slots and pulsating components of permeance, which generate a sinusoidal cogging torque having maxima of the same number as the number of poles of the rotor, pressurizing parts arranged in predetermined positions applying...

20060049714 - Passive wireless acoustic wave chemical sensor: A passive wireless acoustic wave chemical sensor can be utilized for monitoring the concentration of an analyte in a substance such as blood. Such an acoustic wave chemical sensor can be configured to include one or more interdigital transducers and a selective coating formed upon a piezoelectric substrate. The coating...

20060049716 - Drive unit: A drive unit allowing ultraprecise positioning control of a movable member is provided. A drive unit includes an piezoelectric element which expands and contracts upon application of a voltage, a drive shaft fixed to one end of the piezoelectric element along expansion and contraction direction, a movable member which engages...

20060049715 - Method and appartus for driving electro-mechanical transducer: Two piezoelectric ceramics are equal to each other in the polarization directions thereof. Two electrodes disposed on both surfaces of one of the piezoelectric ceramics are connected to an AC voltage source, while other two electrodes disposed on both surfaces of the other piezoelectric ceramic are connected to another AC...

20060049717 - Transformer: A transformer is describe, whereas the primary of the transformer may be a piezoelectric element coupled to a magnetized material that moves in response to electric voltages applied to the primary and such movement is converted to a second electric voltage in a nearby secondary coil. Likewise, the primary may...

20060049720 - Mechanism comprised of ultrasonic lead screw motor: An optical assembly that contains an optical device movably attached to a apparatus for driving a threaded shaft assembly. The apparatus contains of a threaded shaft with an axis of rotation and, engaged therewith, a threaded nut. The assembly contains a device for subjecting the threaded nut to ultrasonic vibrations...

20060049718 - Micro-positioning device: A micro-positioning device adapted for displacement in a direction of travel. The device has a frame, an actuator attached to the frame, and a hydraulic booster attached to the frame and operably connected to the actuator. The actuator is adapted for activation and de-activation in sequence to achieve a displacement...

20060049719 - Vibration wave motor: The vibration wave motor of the present invention comprises a body to be driven, and a plurality of vibrators each of which is provided with a drive contact part contacting the outer surface of the body to be driven, is connected to a base and is disposed around the body...

20060049721 - Device for ultrasonic inspection: The invention relates to a device for ultrasonic inspection which can be used preferably for the non-destructive inspection of bodies, e.g. component parts, by means of ultrasonic waves, and in universal manner for the inspection of various bodies/component parts. It is an object of the invention to be able performing...

20060049723 - Method for producing piezoelectric film actuator, and composite structure having piezoelectric layer: A method for producing a piezoelectric film actuator is provided. This method includes the steps of preparing an intermediate transfer member having a porous layer formed thereon, with a vibrating plate and a piezoelectric layer being provided on the porous layer; bonding the vibrating plate to a nozzle substrate to...

20060049722 - Quartz resonator of small dimensions: The invention concerns a piezoelectric resonator (10), intended to be packaged in a case, including a base (12) formed of a first fixing zone (121), a second central mechanical uncoupling zone (122) and a third zone (123) opposite to the first fixing zone. At least two vibrating arms (13a, 13b)...

20060049724 - Resonator element, resonator and electronic device: A resonator element made of piezo-electric material having a thickness in a Z-direction includes a plurality of rod-like arms extending in a Y-direction, which is a rotational axis for the resonator element rotation; a plurality of rod-like beams extending in an X-direction, perpendicular to the direction in which the plurality...

20060043799 - Linear motor and exposure apparatus having the same: Disclosed is a linear motor having a multi-phase coil to be energized. The linear motor includes a movable element, a stator, and a control system for controlling the position of the movable element, wherein the control system is arranged to acquire drive information related to the linear motor going to...

20060043798 - Small-sized plunger: When a yoke 11 is inserted into a bobbin hole 20 from the one end of a coil bobbin 13A, 13B until a positioning portion 17 of the first leg 11A, 11B of the yoke 11 is brought into contact with the one end of the coil bobbin 13A, 13B...

20060043800 - Motor: A stepping motor includes a hollow cylindrical fixed yoke; a magnet disposed coaxially with the fixed yoke and divided into sections in the circumferential direction, the sections being alternately magnetized; a first coil and a second coil coaxially fixed to the fixed yoke; a first rotational yoke facing a magnetized...

20060043801 - Liquid cooled switched reluctance electric machine: A switched reluctance electric machine has a shaft and a rotor connected to the shaft. The electric machine also has a stator axially aligned with the rotor and disposed radially outward from the rotor. The stator has a plurality of teeth, a winding of wire disposed around each of the...

20060043802 - Brushless motor: In a brushless motor of the present invention, by disposing an electronic circuit board and a rotary magnet close to each other, detection precision of a magnetic pole of a Hall IC is enhanced, and a motor can be reduced in thickness. The electronic circuit board 4 is provided with...

20060043804 - Motor and damper using the same: A motor (M1) is provided with a hollow rotor shaft (3), an output shaft (T) inserted into the rotor shaft (3) and connected to an inner periphery of one end of the rotor shaft (3), and a detecting device which detects a torsion angle of the output shaft varying with...

20060043803 - Motor apparatus having rotational position detector: A motor apparatus is provided with a yoke housing, a gear housing and a brush holder. A receiving portion of the gear housing receives the worm wheel, etc. therein. The brush holder is interposed between the yoke housing and the gear housing. The worm wheel is provided with a switching...

20060043805 - Electronic package for electrical machine: Disclosed herein is an electronic package for an electrical machine including a slip ring end frame; a plurality of negative diodes dispersed in an angular fashion in the SRE frame acting as a negative heat sink; a plurality of positive diodes mounted on a separate electrically conductive plate located above...

20060043806 - Stator and motor: A stator includes a cylindrical-shaped stator core including multiple teeth projecting in a radial direction of the stator core, multiple coils wound around each of the multiple teeth, multiple bus rings arranged at an axially end portion of the stator core and each electrically connected to each of the multiple...

20060043807 - Bicycle generator hub: A bicycle generator hub is mounted to the front fork of a bicycle and includes a hub shaft, a hub shell, bearings, a generator mechanism and first and second magnetic flux recirculation members. The hub shaft is non-rotatably mounted to the front fork. The hub shell is disposed around the...

20060043808 - Hydrodynamic pressure bearing spindle motor: A spindle motor, having a hydrodynamic pressure bearing, including: a stator including a core, on which at least one winding coil is wound, and a base provided with a central hole formed through the central area of the main body thereof so that the core is placed on the upper...

20060043809 - Torque-limited electrical connector: A coupling mechanism is provided. The coupling mechanism includes a bushing assembly adapted to establish a coupling when rotated, a housing that is rotatable when torque is applied to the housing, a torque-limit member positioned between the housing and the bushing assembly such that when the torque-limit member is in...

20060043811 - Rotor assembly for a permanent magnet power electric machine: A rotor assembly for use in an electric motor or generator where the mass of the rotor assembly is reduced with respect to conventional rotor assemblies. In addition, the rotor assembly is configured to be scalable to different sized electric motors. Within the rotor assembly, the rotor hub, the shaft,...

20060043810 - Rotor for permanent magnet motor: A metal film 4 is disposed between a permanent magnet 3 and a rotor yoke 1, and the permanent magnet 3 and the rotor yoke 1 are subjected to beam welding. Since the metal film 4 is disposed between the permanent magnet 3 and rotor yoke 1, and the metal...

20060043812 - Permanent magnet assisted synrm and method for imposing magnetic force thereon: A PMA (Permanent Magnet Assisted) synRM and a method for imposing a magnetic force thereon. Magnets are inserted into outer flux barriers of a plurality of flux barriers formed along the radius of a rotor, and bridges or slim portions are formed on inner flux barriers at positions corresponding to...

20060043813 - Stator structures: Stator structures are provided. A stator structure includes at least a magnetic conductive layer and at least an auxiliary magnetic polar layer. The magnetic conductive layer comprises a plurality of first poles. The auxiliary magnetic polar layer is disposed above the magnetic conductive layer, below the magnetic conductive layer, or...

20060043816 - Electric motor, electric tool having the motor, and electric motor production method: An electric motor designed for electric tools. The motor includes a first molded coil having a first coil covered entirely with a resin that is electrically insulating and highly heat conductive. The motor also includes a second molded coil having a second coil covered entirely with the resin. The first...

20060043814 - Trapezoidal field pole shape in salient machines: Salient pole motors and generators use a magnetic steel pole surrounded by an electrical winding to provide field excitation. The parallel sided shape of conventional field poles limit the amount of magnetic flux due to geometry and saturation constraints at the base of the pole. The base of the pole...

20060043815 - Variable-reluctance resolver and multi-resolver using same: A VR resolver includes a stator yoke having a plurality of magnetic-pole portions; a rotor having a salient-pole portion; an excitation coil; and a plurality of output coils. The stator yoke and the rotor form an annular, hollow structure having a rectangular radial cross section. The excitation coil is provided...

20060043817 - Dc brush motor: A DC brush motor comprises an inner rotor which includes a shaft and two permanent magnets provided on a surface of the shaft, a substantially cylindrical outer stator which is arranged opposingly to the permanent magnets outside the inner rotor via an air gap, and coils, i.e., first and second...

20060043818 - Motor casing: A motor casing includes a first half and a second half which is connected to the first half along a longitudinal direction of the motor casing. A stator and a rotor with a commutator are received in a space enclosed by the first and second halves. A shaft is connected...

20060043819 - Metal-graphite brush and motor including metal-graphite brush: A metal-graphite brush for supplying electricity to a coil wound around a core provided at a rotor of a motor is made of sintered material having porosities at a surface and inside thereof, and the porosities is infiltrated with a conductive liquid having a boiling point higher than that of...

20060043820 - Electrical rotating machine: An electrical rotating machine including a stator core is provided. The stator core is formed of substantially sector-shaped sheet segments die-cut from electrical steel sheets and arranged in a circumferential direction of the stator core to form circular sheets which are stacked in an axial direction of the stator core....

20060043821 - Axial air-gap electronic motor: There is provided an axial air-gap electronic motor in which work for assembling a stator can be performed efficiently. A locking protrusion 26 is provided on a flange portion 24 of core members 21a to 21i which are divided for each teeth 21 and are arranged in a ring form...

20060043823 - Surface acoustic wave device and manufacturing method therefor, and communications equipment: A surface acoustic wave device configured by forming an oxide layer 2 on a piezoelectric substrate 1 composed of a lithium tantalate single crystal or a lithium niobate single crystal and having weak pyroelectric properties having a lower oxygen content than a stoichiometric composition ratio, and forming thereon an IDT...

20060043822 - Surface acoustic wave device, surface acoustic wave apparatus, and communications equipment: An IDT electrode 3, and an input electrode section 5 and an output electrode section 6 each connecting with the IDT electrode 3 are formed in a filter region on one main surface of a piezoelectric substrate 2, and a semiconductor layer 22 is formed on the other main surface...

20060043824 - Vibration wave linear motor and lens implement using vibration wave linear motor: The vibration wave linear motor of the present invention is structured comprising a driven component, a first vibrator having two or more driving contacting parts for driving the driven component in a certain predetermined direction, a second vibrator having one or more driving contacting parts for driving the driven component...

20060043825 - Acoustic driver assembly for a spherical cavitation chamber: An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). The head mass of the driver assembly is...

20060043826 - Acoustic driver assembly for a spherical cavitation chamber: An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). The driver assembly is either attached to the...

20060043827 - Acoustic driver assembly for a spherical cavitation chamber: An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). The driver assembly is either attached to the...

20060043828 - Acoustic driver assembly for a spherical cavitation chamber: An acoustic driver assembly for use with a spherical cavitation chamber is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass, coupled together with a centrally located threaded means (e.g., all thread, bolt, etc.). The driver assembly is either attached to the...

20060043829 - Acoustic driver assembly with recessed head mass contact surface: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass....

20060043832 - Acoustic driver assembly with recessed head mass contact surface: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass....

20060043833 - Acoustic driver assembly with recessed head mass contact surface: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass....

20060043836 - Acoustic driver assembly with recessed head mass contact surface: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass....

20060043837 - Acoustic driver assembly with recessed head mass contact surface: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface, is provided. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass....

20060043830 - Acoustic driver assembly with restricted contact area: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end...

20060043831 - Acoustic driver assembly with restricted contact area: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end...

20060043834 - Acoustic driver assembly with restricted contact area: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end...

20060043835 - Acoustic driver assembly with restricted contact area: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end...

20060043838 - Acoustic driver assembly with restricted contact area: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end...

20060043839 - Ultrasound transducer with enhanced thermal conductivity: A composite structure of a backing material with enhanced conductivity for use in a transducer is presented. The composite structure includes a plurality of layers of backing material alternatingly arranged with a plurality of thermal conductive elements, wherein the plurality of thermal conductive elements are configured to transfer heat from...

20060043840 - Acoustic driver assembly with restricted contact area: An acoustic driver assembly for use with any of a variety of cavitation chamber configurations, including spherical and cylindrical chambers as well as chambers that include at least one flat coupling surface. The acoustic driver assembly includes at least one transducer, a head mass and a tail mass. The end...

20060043841 - Stacked piezoelectric element, production method thereof and electrically conducting adhesive: An object of the present invention is to provide a stacked piezoelectric element with excellent reliability and durability, a production method thereof and an electrically conducting adhesive. A stacked piezoelectric element comprising a ceramic stack obtained by alternately stacking a piezoelectric layer comprising a piezoelectric material and an internal electrode...

20060043842 - Lamination-type piezoelectric element and manufacturing method thereof: A method of manufacturing a lamination-type piezoelectric element includes forming a ceramic laminated body in which ceramic layers and inner electrode layers are alternately laminated on each other. A pair of outer electrodes are respectively joined to a pair of joining faces formed on an outer circumferential face of the...

20060043843 - Ultrasonic sensor: An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of converters are juxtaposed. The protection component protects each of the...

20060043844 - Method for production of pzt-based ceramics having a slow sintering temperature: A method for manufacturing a PZT-based low-sintering piezoelectric ceramic material, the ions to be added as starting compounds being added as powdered oxides and/or powdered carbonates, mixed together, and then calcined to form the piezoelectric ceramic material. After calcining the starting compounds, lithium in ionic form is added to the...

20060043845 - Vibration type driving apparatus: A vibration type driving apparatus capable of inhibiting wear in an elastic member and a contact member is provided. The vibration type driving apparatus is a vibration type driving apparatus relatively driving an elastic member given vibrations by an electric-mechanical energy conversion element and a contact member contacting the elastic...