Electrical generator or motor structure inventions 12/05

20050285452 - Linear motor geometry for use with persistent current magnets: An electrically powered launcher is disclosed that can accelerate small payloads to orbital velocities. The invention uses a novel geometry to overcome limitations of other design, and allows full exploitation of existing superconducting materials....

20050285451 - Linear motor, stage apparatus, exposure apparatus, and device manufacturing apparatus: In a linear motor, each arrayed coil unit (160) of a stator yoke (151) is divided into an upper coil (161) and lower coil (162). A cooling pipe (153) is interposed between the upper coil (161) and the lower coil (162)....

20050285453 - Surface-mountable linear vibrator: The surface-mountable linear vibrator comprises a hollow cylindrical housing of a predetermined thickness having a space therein; an elastic member fixed to an inner surface of the housing; a vibrating body including a yoke fixed to the elastic member to be affected by elastic force in an axial direction of...

20050285454 - Vertical vibrator: A vertical vibrator is disclosed. The vibrator comprises a casing, a magnetic field part including a yoke and a magnet fixed to an inner surface of the yoke, a spring member fixed at one end to the casing and at the other end to the magnetic field part, a vibration...

20050285455 - Low speed discoidal electric motor: v

20050285456 - Method of manufacturing a resin-molded stator: A highly reliable resin-molded stator not suffering insulation breakdown between the different phases of the stator coils even when the operation mode where the output of a rotary machine using a resin-molded stator in which a stator coil wound around a plurality of slots and a stator coil provided at...

20050285457 - Motor cooling system: The motor cooling system of the present invention is a system for cooling a three-phase alternating current motor mounted on a vehicle as a traction motor where oil is introduced as cooling oil from driving-related equipment of the vehicle, wherein the traction motor is equipped with a stator having a...

20050285458 - Pressurized air-cooled rotating electrical machine and method of operating the same: A pressurized air-cooled rotating electrical machine comprising a housing, and a rotor and stator disposed within the housing driven by a shaft is provided. The pressurized air-cooled rotating electrical machine also comprises a compressor operable to pressurize air within the housing to increase the volumetric heat capacity of the air...

20050285459 - Automotive alternator having cooling fan coupled to rotor shaft: An alternator for use in an automobile includes a stator supported between a front housing and a rear housing, and a rotor connected to a rotor shaft and rotatably supported inside the stator. A cooling fan is positioned at an end of a pole core of the rotor. The cooling...

20050285460 - Heat sink arrangement, electric motor and casing part: The invention relates to a heat sink arrangement with a heat sink with a cylindrical interior, in particular a casing of an electric motor or casing part for such, with power electronics integrated into the casing or casing part, with at least one electronics component pressed against the heat sink...

20050285461 - Bicycle electrical generator hub: A bicycle gearshift system is mounted on the rear part of the frame of the bicycle. The bicycle gearshift system includes an electrically powered rear derailleur, a rear hub, a charger part, and a gearshift control part. The electrically powered rear derailleur is mounted on the rear part of the...

20050285462 - Electric blower and supercharger for automobiles using the same: A compact-sized, high-efficient, and high-speed electric blower has high centrifugal resistance. The electric blower includes a rotor that has a multi-slot rotor winding along which an excitation electric current is supplied through a slip ring by a power supply brush, a stator that detects the position of a magnetic pole...

20050285463 - Brush assemblies: Detailed are brush assemblies for electric motors. The assemblies may include lead frames to which leaded electrical components are mounted directly. The lead frames additionally may include two or more conductors and be positioned remote from the brushes of the assemblies....

20050285464 - Method and apparatus for dissipating shaft charge: The present invention relates generally to dissipation of shaft charge. According to an exemplary embodiment, the present invention provides a charge-dissipating device that includes a dissipation member disposed in an explosion-proof enclosure. When mounted to a rotatable shaft of an electric motor, for example, the dissipation member is configured to...

20050285465 - Tie ring: A tie ring is provided wherein the tie ring includes a tie ring structure defining at least one strap cavity. The tie ring structure includes a tie ring top surface and a tie ring bottom surface, wherein the tie ring top surface defines at least one top surface opening and...

20050285466 - Coaxial dynamical system: A coaxial dynamical system includes a motor having a transmission shaft, a dynamical transmission member rotatably connecting to the transmission shaft, and a magnetic driving mechanism connected between the transmission shaft and the dynamical transmission member. The magnetic driving mechanism includes a sleeve assembled, a sleeve fixing member, a magnetic...

20050285467 - Rotor of axial gap motor and method of producing same: A rotor of an axial gap motor has a circular rotor core. A circular frame member is put on one axial face of the circular rotor core. The frame member has a plurality of magnet receiving recesses that are circularly arranged about the axis of the circular frame member at...

20050285468 - Motor: A motor includes a rotor, a rotor core included in the rotor, the rotor core being configured to be embedded, therein, with at least one first magnet, a pair of end plates, one of the pair of end plates being positioned at an axial end of the motor, an other...

20050285469 - Flexible rotor pole crossover for a generator: A generator includes a shaft and rotor body defining poles and a winding positioned around the shaft on the rotor body. A rotor pole crossover is aligned to the shaft and connects ends of the winding between adjacent poles. The rotor pole crossover includes a body member having a curved...

20050285470 - Laminate coil and brushless motor using same: A laminate coil for an integral n-phase motor (n is a natural number of 2 or more) having pluralities of coil poles formed by patterned conductor coils formed in a laminate constituted by pluralities of insulating layers, the laminate coil comprising input and output terminals formed on an outer surface...

20050285471 - Stator structure of motor: A stator structure comprising at least one first magnetic conductive plate and at least one second magnetic conductive plate, each magnetic conductive plate having a plurality of radial arms and pole tooth provided on ends of the radial arms, wherein the pole teeth of the first and second magnetic conductive...

20050285472 - Alternator with removable brush block, method of changing brushes in an alternator, alternator with replaceable resistor, and method of changing the maximum output current of an alternator: An alternator comprises a housing including a first portion, and a second portion having a plurality of electrical connectors and having an aperture; a stator supported in the first portion of the housing; a rotor supported for rotation relative to the stator and configured to have a force current applied...

20050285473 - Motor: A motor includes a rotor part having a rotor shaft and a rotor magnet, a stator part oppositely disposed to the rotor magnet via a gap space, a bearing rotatably supporting the rotor shaft, a spring member abutting with one end of the rotor shaft to urge the rotor shaft...

20050285474 - Rotating electric machine: A rotating electric machine is comprised of a stator having a stator core and a stator coil wound around the stator core, the stator core having at least two tip portions, and a rotor having a rotor core and a plurality of permanent magnets provided in the rotor core, the...

20050285475 - Surface acoustic wave device manufacturing method, surface acoustic wave device, and communications equipment: After electrode patterning on an electrode forming surface of a piezoelectric substrate 2 (FIG. 1(b)), a conductor layer is formed on an electrode non-forming surface of the piezoelectric substrate 2 (FIG. 1(c)). After forming the conductor layer, the conductor layer formed on the other surface is removed (FIG. 1(f)) after...

20050285477 - Energy saving driving circuit for piezoelectric motor: In a method and a device according to the present invention, two piezo-elements are driven with two voltages having a phase difference. One of the piezo-elements is charged by an inductive step-up means to a voltage exceeding an available power supply voltage. Subsequently charge, i.e. energy is transferred from the...

20050285476 - Piezoelectric power supply: A piezoelectric power supply has a piezoelectric transformer circuit configuration which is alterable flexibly according to varying loading power requirements. It includes a control unit (control IC), a power switch (MOSFET) and an inductor to drive a piezoelectric transformer unit to actuate a high voltage and power load such as...

20050285478 - Driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel: A driving circuit for a piezoelectric transformer is provided, which ensures lighting of all the cold-cathode tubes connected to the piezoelectric transformer, and reduces the difference in brightness between the cathode tubes during steady lighting, thereby enhancing reliability and performance. A plurality of cold-cathode tubes connected to a secondary side...

20050285479 - Devices with mechanical drivers for displaceable elements: Devices with mechanical drivers for displaceable elements are described. In one aspect, a device includes a displaceable element, a driver, and a controller. The driver includes a plurality of actuatable drive elements. Each drive element has a respective engagement area that is operable to move from a respective start position...

20050285480 - Moving mechanism using a piezoelectric actuator and a magnetic disk apparatus having such a moving mechanism: A moving mechanism using a piezoelectric actuator is attached by an adhesive with adhesive parts of a constant area between a piezoelectric element and a slider and between the piezoelectric element and a suspension. A movable part, serving as the slider, is moved by the piezoelectric actuator. A support part,...

20050285481 - Rotation/displacement converting actuator: A rotation/displacement converting actuator has an actuator unit constituted by a displacing body and an actuator in which the displacing body can be linearly displaced. The actuator has a pair of plate-shaped bases, a rotor, a vibrating element that rotates the rotor, and a cam mechanism for converting rotary motion...

20050285482 - Crystal oscillator: A crystal oscillator of the present invention includes: a substrate provided in a package; a heating device arranged as surrounding an internal area of the substrate on at least one of the surfaces of the substrate; a crystal resonator or a crystal element and an oscillation circuit unit provided in...

20050285483 - Tuning folk type vibrating reed, tuning folk type vibrator, and method for making tuning folk type vibrator: A tuning fork resonator comprises a base portion and leg portions extending from the base portion. A groove portion is formed in a major surface of each leg portion. An in-groove electrode is formed in the groove portion. A side surface electrode is formed on a side surface of the...

20050280314 - Positioning mechanism for specimen inspection and processing: A specimen positioning mechanism includes a movable stage movable along multiple axes, a plate connected to and supporting a specimen mounting chuck, multiple linear displacement mechanisms coupling the plate to the movable stage and mutually spaced apart at different locations between the movable stage and the plate and separately controllable...

20050280317 - Linear motor: A field yoke (2) on which permanent magnets are mounted is fixed to a stationary member (1) of a machine. An armature (3) composed of coils is attached to a surface of a table (4), which is guided to move by a rectilinear movement guide (5), opposed to the field...

20050280316 - Linear motor and manufacturing method of linear motor: A linear motor comprise a pipe shaped member, and a stator stored in the pipe shaped member, the stator including plural magnets arranged in series so that adjacent poles of the plural magnets having the same magnetic pole are opposed each other, and a moving member capable of moving, the...

20050280315 - Tandem arrangement linear motor: A linear motor including a plurality of movers (1a to 1c), each of which is formed with an armature having a polyphase balancing winding (Ru to Rw), and a stator having a permanent magnet or a secondary conductor is configured such that the plurality of movers (1a to 1c) are...

20050280318 - Self-cooling actuator: An actuator for an active suspension system includes an armature and a housing enclosing an interior. The interior has a volume that varies in response to movement of the armature. A wall of the housing forms a first aperture through which air passes in response to movement of the armature....

20050280319 - Motor providing oscillating action for a personal care appliance: The motor assembly which produces an oscillating action for a personal care device includes a horizontally positioned U-shaped stator portion, and an armature portion which includes a torsion spring shaft which is anchored at one end thereof. The armature portion also includes a U-shaped magnet mounting member which is fixed...

20050280321 - Dynamoelectric machine having encapsulated coil structure with one or more of phase change additives, insert molded features and insulated pinion: An electric motor has an armature and a stators. The armature has a lamination stack having slots therein. An internal shaft extends coaxially through the lamination stack. A plurality of magnet wires are wound in the slots of the lamination stack. A commutator is disposed on the armature shaft to...

20050280320 - Resolver: To obtain a resolver in which the winding portion is prevented from breaking by corrosion caused by water. The resolver includes: a stator core in which a plurality of pole teeth are formed inside an annular stator core main body in a radius direction, a rotor provided inside the stator...

20050280322 - Induction generator for a rotatable object: An induction generator includes a mounting member, a supporting member, a sensing coil unit, and a magnet unit. The supporting member is mounted on the mounting member such that relative rotation between the mounting and supporting members is permitted about a pivot axis. The sensing coil unit is mounted on...

20050280323 - Motor unit: A motor unit of which the size is reduced by reducing the space of a control circuit section. In the motor unit integrating a motor and a drive control section 4, the drive control section 4 has a stack structure where two circuit component containing sections 33, 34 are arranged...

20050280324 - Motor having speed reducer and control circuit: A motor has a motor unit, an output shaft, a speed-reducing unit for controlling the motor unit, a control circuit board and a gear housing. The speed-reducing unit transmits a rotation of the rotation shaft of the motor unit to the output shaft to rotate slower than the rotation shaft....

20050280325 - Turbocharger with rotating electric machine: A turbocharger with a rotating electric machine includes a turbine rotor which constitutes a portion of a rotating member of the turbocharger; a compressor impeller which constitutes a portion of the rotating member of the turbocharger; a rotating electric machine which includes a stator and a rotor that constitutes a...

20050280326 - Brushless direct current motor: A direct current motor having a stator that has a plurality of radially arranged stator pole bridges to each of which one phase is allocated, at least one stator pole group being formed by at least two adjoining stator poles which are associated with the same phase, no winding sections...

20050280327 - Dynamoelectric machine stator core with mini caps: A stator assembly for a dynamoelectric machine in accordance with the present invention includes a generally cylindrically-shaped stator core having a plurality of core slots formed along the inner surface thereof and defined by a radial depth and wherein a stator coil is disposed. The plurality of core slots defines...

20050280328 - Stator of a rotary electric machine having secured core slot insulators: A stator of a rotary electric machine having secured core slot insulators includes a multi-phase stator winding, having a plurality of slot segments that are adapted to be radially inserted into a plurality of circumferentially spaced axially-extending core slots in a surface of a cylindrically-shaped stator core. The stator winding...

20050280329 - Electrical contact technology and methodology for the manufacture of large-diameter electrical slip rings: The present invention provides several improvements in a slip ring (36) that is adapted to provide electrical contact between a rotor (42) and stator (40). In one aspect, a brush tube (39) is crimped around the upper marginal end portions of a plurality of individual fibers (38) inserted therein. In...

20050280330 - Alternator having a slip-ring cover connected to brush holder: An automotive alternator has slip-rings connected to a rotor shaft and a brush device covering the slip-rings. The brush device is composed of a brush holder supporting brushes therein and a slip-ring cover firmly connected to the brush holder. The slip-ring cover includes a wall curved in a U-shape and...

20050280331 - Two-axis device and manufacturing method therefor: A two-axis device is provided. The two-axis device includes a first substrate having a plurality of electrodes, a first connecting layer located on the first substrate, an actuating layer, a second connecting layer and a cover. The actuating layer is connected to the first substrate via the first connecting layer...

20050280332 - Driving ciruit for piezoelectric motor: In a method and a device according to the present invention, two piezo-elements of a piezo-electric actuator are driven with two voltages having a mutual phase difference. One of said piezo-elements is charged by a capacitive voltage step-up means to a voltage exceeding an available power supply voltage. A capacitor...

20050280333 - Ultrasonic transducer, ultrasonic speaker and method of driving and controlling ultrasonic transducer: An ultrasonic transducer including: a fixed electrode; a vibrating film placed opposite to a surface of the fixed electrode and having a conducting layer; a member that holds the fixed electrode and vibrating film; the fixed electrode including a driving-use fixed electrode formed to drive the ultrasonic transducer, and a...

20050280334 - Piezoelectric generators and methods of operating same: A piezoelectric power generator (20, 120) comprises plural piezoelectric devices (22, 122); an actuator (24) positioned to impart an excitation to the plural piezoelectric devices (22, 122) in a predefined sequence; and, an electrical conduction system (30) connected to the plural piezoelectric devices for conducting an electrical charge created by...

20050280335 - Piezoelectric element, ink jet head, angular velocity sensor, method for manufacturing the same, and ink jet recording apparatus: A piezoelectric element includes a first electrode layer 14 provided on a substrate 11 and made of a noble metal to which at least one additive selected from the group consisting of Mg, Ca, Sr, Ba, Al and oxides thereof is added, an orientation control layer 15 provided on the...

20050280336 - Multilayer piezoelectric element: A multilayer piezoelectric element is provided with a multilayer body, a first external electrode on a side face of the multilayer body, and a second external electrode outside the first external electrode. The multilayer body consists of an alternate stack of a plurality of piezoelectric members and a plurality of...

20050275293 - System for integrating linear motion guide and linear induction motor: The present invention provides a system for integrating a linear motion guide and a linear induction motor that can commonly employ a stationary member between the linear induction motor and the linear motion guide so that a complicated connection structure between a conventional linear motion guide and a conventional linear...

20050275294 - Driving unit: A driving unit of the present invention comprises a moving element, an elastic body configured to support the moving element, a permanent magnet fixed on said moving element, an electromagnet disposed to be opposed to said permanent magnet, and a controller. The moving element and the elastic body constitute a...

20050275295 - Driving device and light amount controller: A low-cost, small-sized and high-output driving device which makes it possible to produce two outputs separately and is easy to handle. The driving device has two driving units comprised of a coil, a stator, a magnet, and a rotor. The two driving units are arranged, side by side, along the...

20050275297 - Actuator provided with grounding terminal: There is provided an actuator which includes: a stator assembly including a pair of stator yokes, and a coil disposed between the pair of stator yokes; a rotor unit including a magnet at its outer circumference and disposed inside the stator assembly; an output shaft disposed inside the rotor unit;...

20050275296 - Rotary electric apparatus with coil-end block from which lead wires are drawn out: A rotary electric apparatus, such as motor, comprises a rotor and a stator arranged to face the rotor in the radial direction. The rotor rotates together with a rotation shaft. The stator has a cylindrical stator core, a stator winding wound in the stator core to have coil-end blocks arranged...

20050275298 - Method for mounting a drive shaft of a compressor: r

20050275300 - Methods of controlling the instability in fluid film bearings: A method of controlling the instability in fluid film bearings by using a magnetic bearing in combination with a fluid film bearing (whether it is a cylindrical journal bearing, an elliptic bearing, an offset-half bearing, a multi-lobe bearing, foil bearing or a tilting-pad bearing, does not really matter), wherein the...

20050275299 - Motor with rotational balancing structure: A motor includes an axial tube mounted in a stator, a rotor, a balancing magnet, and a magnetically conductive member. The rotor includes an axial base formed on an inner face thereof and a shaft extending from the axial base through a bearing received in the axial tube. The balancing...

20050275301 - Electric motor: An electric motor includes a cylindrical yoke main body and a plurality of permanent magnets having an arcuate cross-section. The permanent magnets are secured to a inner circumferential surface of the yoke main body such that the permanent magnets are continuous with one another along the entire circumference of the...

20050275302 - Rotor magnet placement in interior permanent magnet machines: A machine includes a stator and a rotor having a plurality of poles. Each pole is formed at least in part by a plurality of permanent magnets recessed within the rotor at a predetermined distance from an outer surface of the rotor. The distance is predetermined to minimize rotor flux...

20050275303 - Differential flux permanent magnet machine: A differential flux motor includes a rotor and a stator assembly. The rotor has a shaft and rotor section(s) attached to the shaft. The stator assembly has first and second stator cores, first and second magnets, and a shell. The first stator core includes a first winding and concentrically surrounds...

20050275304 - Method and apparatus for reducing hot spot temperatures on stacked field windings: A method and apparatus for a generator coil includes a plurality of stacked windings in a rotor where individual turns are stacked in parallel sided radial slots in the rotor. Each successive turn has the same width substantially corresponding to a constant width of each slot, wherein a first turn...

20050275305 - Rotor arrangement for an electrical drive motor of a compressor, particularly a refrigerant compressor: For this purpose, it is ensured that openings (24, 26) of different sizes are provided in the sheet plates (23, 15) at least two sheet plates (23) forming a first group, each having an opening (24), which is smaller than the cross-section of the shaft (8), the remaining sheet plates...

20050275306 - Radially clamped ball and socket series and phase connector: The present invention comprises a U-bolt connector for connecting pairs of stator coil headers 2 with ball headers 6 comprising, a U-bolt 16, top capping pieces 18,20, bottom capping pieces 20, 21, a variable piece 24, and a tightening mechanism 26. The top capping pieces 18,20 secure one ball connector...

20050275307 - Rotor shaft coupling: A rotor has a rim that diverges from its peripheral portion. Accordingly, the rim more securely couples with a shaft. More specifically, the rotor has a support member with a peripheral portion and an interior rim. The interior rim defines a central opening and, as noted above, diverges from the...

20050275308 - Novel method of exciting a piezoelectric crystal: The invention describes the use of an electrical pulse that is a single square wave to excite a piezoelectric crystal. This pulse is applied alternately to either side of the crystal at twice the nominal resonant frequency of the crystal. This method provides a significant increase in net drive power...

20050275309 - Surface acoustic wave device, method of manufacturing the same, and electronic apparatus: A surface acoustic wave device, comprising a lithium-tantalate substrate and an IDT electrode that excites a pseudo-longitudinal wave type leaky surface acoustic wave in the surface of the lithium-tantalate substrate, wherein a normalized substrate thickness t/λ, which is a thickness t of the lithium-tantalate substrate normalized by an IDT wavelength...

20050275310 - Method for eletronic operation of a control device for an ultrasound piezoelectric actuator: The invention relates to a method for operation of a control device for at least one ultrasound piezoelectric actuator, comprising an a.c. converter with an assembly having a transformer connected to a voltage source by means of at least one controlled switch and providing an alternating driving voltage for the...

20050275311 - Compliant device for nano-scale manufacturing: The present invention is directed to a compliant device comprising a support body, a floating body, and a plurality of flexure arms. Each of the plurality of transfer arms is connected between the support body and the floating body to transfer a load therebetween in parallel. To that end, the...

20050275312 - Transducer: A transducer includes a Langevin type vibrator, a bending vibrator, and a ring-like member. The Langevin type vibrator has a construction in which a front mass, a cylindrical vibrator, and a rear mass are provided in tandem, and those elements are tightened by a bolt. The bending vibrator is provided...

20050275313 - Acoustic backing composition, ultrasonic probe and ultrasonic diagnostic apparatus: Disclosed is an acoustic backing composition comprising an ethylene-vinyl acetate copolymer containing 20 to 80% by weight of the vinyl acetate units and a filler contained in the ethylene-vinyl acetate copolymer....

20050275314 - Actuator: An actuator of the present invention comprises a piezoelectric element, one end face of the piezoelectric element in a displacement direction being supported by a fixing member, a block shaped driving member attached to the other end face of the piezoelectric element in the displacement direction, and a driven member...

20050275315 - Actuator and its control method and lens device: An actuator which drives a lens frame in an optical axis direction is constructed by piezoelectric elements, driving members, and a pressing spring. The piezoelectric elements are placed at opposite sides with a driven plate therebetween, and the driving members are fixed to the respective piezoelectric elements. The driving members...

20050275316 - Piezoelectric element, inkjet recording head and inkjet recording device: The present invention provides a piezoelectric element including: a piezoelectric body; and two electrodes between which the piezoelectric body is interposed, wherein the piezoelectric element is covered by a low water permeable insulating film serving as a protective film....

20050275317 - Structure with a plurality of substrates, its manufacturing method and crystal oscillator with the structure: The structure provided with a plurality of substrates of the present invention is provided with a plurality of substrates each provided with chip-shaped circuit devices connected by poles also used as electrical wiring. At least one pole connecting the plurality of substrates is also used as one of the circuit...

20050275318 - Stacked type electro-mechanical energy conversion element and vibration wave driving apparatus: A stacked type electromechanical energy conversion element which is compact in size and capable of providing higher output power and enhanced operating efficiency. A plurality of electrode layers are formed, respectively, on one surfaces of a plurality of piezoelectric layers, and the material layers and said electrode layers are stacked...

20050269884 - Electric tool: A shielding member is provided to cover the outer wall of the armature on a line segment connecting the inner wall at the front end of a magnet to the edge of a vent. The shielding member is ring-shaped and configured by a disk-shaped base section, a hole section formed...

20050269885 - Pressurized bearing system for submersible motor: Pressurized lubricant is used for stabilizing shaft bearings in an electrical submersible pump motor. A lubricant pump is located within the motor housing. The lubricant pump has a set of impellers attached to a lower end of the shaft and rotating with the shaft, the impellers being located in the...

20050269886 - Alternators and improvements to rotary internal combustion engines: The present invention provides improved alternators for use alone or in combination with, for example, rotary internal combustion engines wherein the alternators are characterised by absence of moveable bearings or mountability to existing driving shafts by use of an aligning plate and through passage through the rotor of the alternator...

20050269887 - High-reliability electro-mechanical actuator: An electrical actuator comprises two or more electrical motors to drive a threaded screw ram. Each motor has an armature that drives a threaded roller screw that is engaged to the threaded screw ram. Each armature of each motor is independently engageable and/or dis-engageable with the ram. The motor armatures...

20050269888 - Internal permanent magnet rotor having improved configuration of magnetic flux barriers: At each permanent magnet in a rotor of an IPM rotary electric machine, each of a pair of flux barriers respectively disposed adjoining circumferentially opposed side faces of the magnet is formed with a trench portion that extends farther from a circumferential face of the rotor than a position on...

20050269889 - Frameless switched reluctance motor and application as a top drive for a rotary pump: A frameless switched reluctance motor (SRM) has a stator sandwiched between two housings. Axial load on the rotor shaft is directed through a first bearing, through the first housing to the stator and through the second housing to a motor support. Heat is dissipated using low-loss electrical steel, one or...

20050269890 - Stator arrangement of rotary electric machine: In a stator of a rotary electric machine that includes a stator winding and a stator core having a plurality of slots, the stator winding is constituted of a plurality of series-connected regular U-shaped segments each of which has a pair of in-slot portions and a plurality of U-shaped irregular...

20050269891 - Motor and manufacturing method for the same: A motor has a rotor, a housing and a stator including a substantially ring shaped yoke portion, a wire mounting portion provided on the yoke portion and having a core portion and pluralities of passage portions extending in an axial direction of the core portion and a wire wound around...

20050269892 - Induction machine rotors with improved frequency response: The present invention generally relates to the use of electrical charge storage devices in the rotors of induction machines. Optimal induction machine rotor electrical field requirements increase with rotational velocity and inversely to frequency. Pseudocapacitance and other inverse frequency capacitance adjustment methods are employed to provide for that need and...

20050269894 - Rotor core and direct-current motor: A core includes a ring body and a plurality of teeth. The teeth extend radially outward form the outer circumference of the ring body. The core is formed by assembling a first core member and a second core member. Each core member has part of the teeth the number of...

20050269893 - Spiral linear motor: In a spiral linear motor 1, a rotator 3 and stator 2 are both constituted having a spiral shape and, by joining together both spiral-shaped parts, a drive force is produced in the axial direction during rotation in a spiral shape. By affording the spiral linear motor a spiral shape,...

20050269895 - Dc brushless motor for electrical power steering and the production method thereof: The stator core of a motor comprises an annular back core, and a plurality of tees created separately from the back core and secured onto the inner periphery of the back core. A stator coil is wound on each of the tees by a distributed or concentrated winding method. The...

20050269896 - Bracket assembly of universal motor: A bracket assembly of a universal motor comprises: a bracket composed of a base portion formed as a certain shape and coupled to a motor stator, a plurality of supporting portions extendingly formed at the base portion with a certain length, a bearing mounting portion extendingly formed at an end...

20050269897 - Rotor of electric rotating machine: Leakage of a magnetic flux from inside diameter face of claw magnetic poles is reduced to improve output, and deformation and vibration of the claw magnetic poles are reduced. A rotor includes: a rotor coil for generating magnetic flux; a pole core comprised of a first pole core body and...

20050269898 - Systems and methods for overcoming stiction: An electromechanical system includes a structural plate in contact with a stop and an actuator activated by a force for creating a movement of the stop relative to the structural plate, wherein the movement is sufficient to overcome stiction forces between the structural plate and the stop....

20050269900 - Acoustic resonators: An acoustic resonator of one inventive aspect includes a substrate, at least one generally crystalline primer layer provided on the substrate either directly or on top of one or more intermediate layers, a generally smooth and generally crystalline electrode layer provided on the primer layer, and a piezoelectric layer provided...

20050269899 - Ultrasonic transducer and method of manufacturing ultrasonic transducer: The present invention relates to an ultrasonic transducer that has a diaphragm in which an electrode layer is formed thereon. A fixed electrode having a plurality of asperities on the surface facing the diaphragm is provided. An alternating current signal is applied between the electrode layer formed on the diaphragm...

20050269901 - Micro electrical mechanical system (mems) tuning using focused ion beams: A method for tuning an electro-mechanical device such as a MEMS device is disclosed. The method comprises operating a MEMS device in a depressurized system and using FIB micromachining to remove a portion of the MEMS device. Additionally, a method for tuning a plurality of MEMS devices by depositing an...

20050269902 - Reducing coupling of rf interrogated saws to external bodies: Disclosed is an apparatus and methodology for providing reduced coupling of radio frequency (RF) interrogated surface acoustic wave (SAW) based sensors to external bodies. Coupling, and therefore electrical loading of the sensor element, is reduced by providing an electrically conductive housing surrounding the SAW sensor element and by electrically coupling...

20050269903 - Single-phase electroactive motor: A rotary piezoelectric motor (1) in which a geometrical asymmetry can be introduced, e.g. in the counter-masses (11, 14) or in the stator fixing elements (10), in order to produce a phase shift previously obtained using a phase quadrature power supply. A simplified single-phase power supply (40) can be used...

20050269904 - Thin film bulk acoustic resonator and method of manufacturing the same: The thin film bulk acoustic resonator includes a laminated body having a first electrode 12, a piezoelectric layer 13 adjacently formed on an upper surface of the first electrode 12, and a second electrode 14 adjacently formed on an upper surface of the piezoelectric layer 13, and is made such...

20050269905 - Driving apparatus, use thereof and an optical system comprising such apparatus: Driving apparatus, comprising at least two driving members (1, 2, 3, 4) and at least one driven member (5), wherein each of the at least two driving members are frictionally engaged to the at least one driven member (5) to move said driven member (5), wherein the friction between each...

20050269906 - Electro-active actuator: An electro-active actuator having a bender construction comprising layers of electro-active material and electrode layers for activation of the electro-active material, the layers of electro-active material being shaped to extend continuously along at least one curved portion and at least one substantially flat portion arranged with electrical terminals for electrical...

20050269907 - Power generator employing piezoelectric materials: An efficient generator of electrical power employs groups of piezoelectric devices disposed in a radial manner about a centrally located cam. The cam, when rotated by a prime mover as a conventional source of mechanical energy, applies a periodic varying force to each piezoelectric device in a suitable sequence. The...

20050269910 - Multilayer piezoelectric element: A multilayer piezoelectric element is provided with a multilayer body in which internal electrodes are arranged between stacked piezoelectric layers. The multilayer body has an active part piezoelectrically active, and nonactive parts piezoelectrically nonactive. The nonactive parts are located so as to interpose the active part in between in a...

20050269908 - Piezoelectric blades anchoring structure: A piezoelectric blades anchoring structure includes an electric input leg which has a resilient end in contact with the piezoelectric blades in normal conditions and a connection end inserting in a circuit board. The resilient end is covered by a protection plate which also covers the electric contact of the...

20050269911 - Piezoelectric oscillator and electronic device: A piezoelectric oscillator includes: a package having a package base, a bottom surface, a conductive cap that seals airtightly an interior space of the package base, and a terminal to perform at least one of inputting a signal from outside of the package and outputting a signal from the outside...

20050269909 - Piezoelectric-transformer and carrier arrangement: A piezoelectric-transformer and carrier arrangement in which the carrier is press-molded from elastic material, for example, silicon rubber and has integrated binding belt and retainers for securing the piezoelectric-transformer to the carrier body, for enabling the input and output terminal lead wires of the piezoelectric-transformer to be directly connected to...

20050269912 - Crystal oscillator: The present invention relates to a crystal oscillator that is provided with a crystal element; a main surface electrode configured of a first underlayer formed on each of two main surfaces of the crystal element and a first surface layer of Au superimposed over the first underlayer; an end surface...

20050269914 - Piezoelectric actuator: The invention provides a piezoelectric actuator having a stack body comprising a plurality of piezoelectric elements, each element having a positive and negative electrode pair which are electrically isolated from one another by the piezoelectric elements, the electrode pairs being arranged in groups of one or more electrode pairs, each...

20050269913 - Piezoelectric element and piezoelectric device: A piezoelectric element is provided with a multilayer body comprising an alternate stack of first internal electrodes and second internal electrodes with a piezoelectric layer in between each two of the first and second internal electrodes. The multilayer body has an outermost piezoelectric layer adjoining the second internal electrode at...

20050269915 - Long-stroke, high-resolution nanopositioning mechanism: The present invention relates to a long-stroke nanopositioning device, comprising: a piezoelectric tube; a quartz glass rod; two fixed seats being disposed on the ends of the piezoelectric tube and a piezoelectric actuator. Each of the fixed seats has a base for receiving at least one spring and a plurality...

20050264106 - Signal actuator device for a position adjustment control: Signal actuator device, comprising a support structure; a bottom drive shaft, turnable seated in a seat of the support structure; first torsional coupling means, integral to said bottom drive shaft and fully extending around said shaft; at least a first control cam torsionally coupled to said first torsional coupling means...

20050264108 - High field voice coil motor: An embodiment of the invention is a particular arrangement of permanent magnets that generates a higher strength and more uniform magnetic field than existing permanent magnet arrangements for a voice coil motor. The permanent magnet arrangement of an embodiment is based on the Halbach arrangement of permanent magnets. The increased...

20050264107 - Linear motor and manufacturing method thereof: To reduce the magnetic flux leakage through the gap between magnetic pole teeth of an armature so as to reduce the magnetic attraction force generated between the armature and a needle, an armature unit is provided with two magnetic poles, on the top of which are magnetic pole teeth protruding...

20050264109 - Linear actuator: A linear actuator, preferably for sickbeds and beds for domestic use, comprises a reversible electric motor (2) which, via a reduction gear, drives a spindle (4) with a nut (5) secured against rotation so that an activating element (6) connected with the nut is moved to and fro in response...

20050264110 - Flux probe for electric generator: A flux probe (100) for measuring the rotor flux of an electric generator (10). The probe (100) is affixed to a probe carrier (102) and held within a stator coil slot (62) by affixing the carrier (102) to two opposing grooves (104) formed in sidewalls (81) of the slot (62)....

20050264111 - Hub unit for use in electrically movable wheels and vehicle comprising the hub unit: A hub unit for use in electrically assisted bicycles has an improved effect to radiate heat from a stator. A hub (7) has inner teeth (66a) meshable with planetary gears (65) and a fixing support shaft (57) projecting from opposite ends of the hub and provided fixedly relative to a...

20050264112 - Hub unit for use in electrically movable wheels and vehicle comprising the hub unit: A hub unit wherein the axis is prevented from deflecting for use in electrically assisted bicycles. A single fixing support shaft (57) has opposite ends projecting outward respectively from opposite ends of a hub (7) enclosing a motor (9) and a planetary gear reduction mechanism (6) therein and having inner...

20050264113 - Actuator including rotor case and housing with sealing unit for hermetic structure: An actuator for use with a fluid channel structure comprises: a stator assembly including stator yokes, and a coil; and a rotor assembly including a housing shaped in a circular hollow-cylinder, an output shaft inserted through the housing, a sleeve, a magnet fixedly attached to the sleeve, and a rotor...

20050264114 - Vibration motor: A vibration motor includes: a lower case provided with a lower board; an upper case coupled with the lower case; a four-pole magnet provided on the lower case; a shaft supported between the lower case and the upper case; a rotor rotatably supported by the shaft with an eccentricity, in...

20050264115 - Housing of motor: A housing of a motor includes a barrel having fins on an outer surface thereof and stands on a bottom of the outer surface for mounting the motor onto a predetermined plane horizontally. A rear lid is mounted at a rear end of the barrel and has an axle hole...

20050264116 - Motor with a multifunction bearing cap and method of assembly: A motor and method of assembly of a motor having a stator core and at least a first end shield. The method includes selecting a bearing cap from one of a plurality of bearing caps. Each of the plurality of bearing caps has a different bearing cap length and is...

20050264117 - Stepping motor for use in high-temperature environments: There is provided a stepping motor comprising: a stator assembly; a rotor assembly rotatably disposed inside the stator assembly, and including a rotary shaft rotatably supported by bearings, a sleeve fixedly attached onto the rotary shaft, and at least one magnet disposed outside the sleeve; and a preloading mechanism disposed...

20050264118 - Conical bearingless motor/generator: A bearingless motor/generator comprises a rotatable part and a stationary part. The rotatable part is adapted to be rotated about an axis of rotation with respect to the stationary part. The stationary part has one or more windings for producing a drive field and a control field. The drive field...

20050264119 - Magnetic bearing using displacement winding techniques: The present invention provides a linear, rotary spherical motor with an integrated magnetic bearing. The motor can be a toothless permanent magnet, BLDC design composed of a permanent magnet rotor and a Zigzag stator winding containing at least two-phase windings, where each phase is constructed of at least two circuits....

20050264120 - Magnetization pattern of rotor magnet for stepping motor: A magnetization pattern of a rotor magnet for a stepping motor includes a plurality of magnetization portions, which is provided on the rotor magnet in a rotation direction of the rotor magnet. The magnetization portions have different magnetic poles which are alternately arranged. Some magnetization portions of the magnetization portions...

20050264121 - Cored motor: A cored motor is composed of a rotor (21), which is composed of a rotor hub (2), a shaft (1) fixed to the rotor hub (2), a rotor yoke (5) in ring shape and a ring magnet (6) fixed to an inner circumferential surface of the rotor yoke (5), and...

20050264122 - Permanent magnet motor: a value obtained by dividing the radius of the rotor 1 by the radius of curvature of a permanent magnet surface facing towards the stator is set at a value such as to decrease cogging torque. Thereby, there is provided a permanent magnet motor in which the radius of an...

20050264123 - Stator of rotating electric machine and manufacturing method of the stator: A plurality of coils concentratedly wound around individual teeth are formed as coil units having a common shape, each of the coil units being made by winding a conductor in a generally rectangular form, stacking one conductor line on top of another, and each of the coil units having two...

20050264124 - Generator rotor: An improved generator rotor (30) and a method of repairing an existing generator rotor (12) are disclosed. Methods consistent with the present invention provide techniques for repairing existing stress-damaged rotors (12) to remove stress-induced cracks (29), without requiring new retaining rings (16), to significantly extend the useful life of a...

20050264125 - Rotor of motor: A rotor of a motor is provided. The rotor includes a rotor core and a winding coil wound on the rotor core. The rotor is rotatable by an electromagnetic interaction with a stator, in which both sides of an end wall of each slot of the rotor core where the...

20050264126 - Ring cap for use on commutator in miniature electric motor for absorbing electrical noise/sound: A rotor assembly for an electric motor, including: a rotor shaft, an armature, wire windings and a commutator, wherein the rotor assembly further includes a ring cap directly connected with the commutator. The ring cap includes chip capacitors soldered on a printed circuit board through a Surface Mount Device (SMD)...

20050264127 - Brush holder for an electric-motor driven actuator and an electric-motor driven actuator: An electric-motor driven actuator has a housing, in which a motor (3) and a carrier plate (4) are arranged, whereby the carrier plate (4) is connected in a fixed manner to a brush holder (5). The brush holder (5) has a first brush holder component (51), which is connected rigidly...

20050264130 - Apparatus and methods for anchoring a modular winding to a rotor in an electrical machine: Locking strips secure winding modules to a rotor. The locking strips have paired deep and shallow recesses along a long edge and are disposed in a groove along the rotor. Upon assembly of the winding module, the deep recesses of the locking strips are aligned, enabling the winding supports of...

20050264129 - Optimized drive train for a turbine driven electrical machine: A rotor in a electrical machine comprises a magnetic core having at least two poles, a plurality of winding assemblies, one for each pole, and a damper winding enclosing at least a portion of the magnetic core and winding assemblies. The damper winding has (i) a plurality of electrically conductive...

20050264128 - Variable pitch manifold for rotor cooling in an electrical machine: A rotor in an electrical machine, the rotor comprises a magnetic core having at least two poles, a plurality of winding assemblies, one for each pole, and a cylindrical tube enclosing the magnetic core and winding assemblies, the tube including a plurality of rings having different axial widths. Each of...

20050264131 - Rotary-type comb-drive actuator and variable optical attenuator using the same: The present invention relates to an actuator and optical attenuator using the actuator. The rotary-type comb-drive actuator includes a substrate, a movable electrode, a drive electrode, one or more vertical springs, one or more vertical spring anchors, a horizontal spring and a horizontal spring anchor. The movable electrode is arranged...

20050264134 - Adaptive shape substrate support system: The present method and system features an active compliant pin chuck to hold a substrate, having opposed first and second surfaces, and compensates for non-planarity in one of the surfaces of the substrate. To that end, the support system includes a chuck having a plurality of piezo pins and reference...

20050264132 - Apparatus to control displacement of a body spaced-apart from a surface: An apparatus to control displacement of a body spaced-apart from a surface includes a flexure system having a first flexure member defining a first axis of rotation and a second flexure member defining a second axis of rotation. A body is coupled to the flexure system to move about a...

20050264133 - System and method for design and fabrication of a high frequency transducer: Techniques for fabricating high frequency ultrasound transducers are provided herein. In one embodiment, the fabrication includes depositing a copperclad polyimide film, a layer of epoxy on the copperclad polyimide film, and a polyvinylidene fluoride film on the epoxy. The assembly of materials are then pressed to bond the polyvinylidene fluoride...

20050264135 - Control structure for controlling water drop slidable property of surface: A control structure controls a slidable property of an object and has: a piezoelectric film, on a surface of an object, made of a piezoelectric material; and at least a pair of electrodes, on the piezoelectric film, to which AC voltage is applied....

20050264136 - Surface acoustic wave device: A surface acoustic wave device includes at least one interdigital transducer having electrodes of a double-layered structure in which an upper film and an underlying film are laminated. The upper film has a main component of Al and a first metal of Ti added to the main component. The underlying...

20050264137 - Piezoelectric thin-film resonator and filter and fabricating method: A piezoelectric thin-film resonator includes a device substrate and a laminated body provided on the device substrate and composed of a lower electrode, an upper electrode and a piezoelectric film sandwiched between the lower and upper electrodes. The laminated body has a membrane portion in which the upper and lower...

20050264138 - Piezoelectric/electrostrictive structure and method for manufacturing the same: A piezoelectric/electrostrictive structure includes a plurality of stacked sheet-shaped piezoelectric/electrostrictive bodies and at least one sheet of a thin film. The interfaces between the piezoelectric/electrostrictive bodies are exposed at side faces of the piezoelectric/electrostrictive structure, the side faces have notches, and at least one sheet of a thin film is...

20050264139 - Longitudinal-torsional ultrasonic tissue dissection: An ultrasonic tissue dissection system providing combined longitudinal and torsional motion of tips, together with irrigation and aspiration, for improved cutting of resistant biological tissue. The system permits the use of common and inexpensive electro-mechanical transducers for the production of such motion through the use of longitudinal-torsional resonators....

20050264140 - Piezoelectric oscillator and electronic device: Exemplary embodiments of the invention provide a piezoelectric oscillator that enables reduction in thickness. A piezoelectric oscillator is configured to include: an electronic component electrically connected with one side face of a plurality of leads that are formed from a lead frame, a mold material that seals the electronic component...