Abstract: A method of filling a brake system for a motorcycle including a brake system having a master cylinder assembly and a caliper assembly. The master cylinder assembly includes a housing and a cover coupled to the housing to define an enclosed reservoir. The caliper assembly includes a fluid passageway and a fitting adjustable to selectively provide fluid communication with the fluid passageway. The motorcycle also includes a brake line coupled between the master cylinder assembly and the caliper assembly to fluidly connect the reservoir and the fluid passageway. The method also includes substantially evacuating the reservoir, brake line and fluid passageway, coupling a fluid source to the fitting, passing fluid from the fluid source through the fitting, and filling the reservoir, brake line, and fluid passageway with the fluid passed through the fitting from the fluid reservoir.

Abstract: To provide an accumulator which is capable of relieving a pressure in a seal attaching portion (a portion under a seal) in order to make the attached state of a seal stable and prevent slipping off of the seal from the seal attaching portion, the seal attaching portion with which a working member is freely contacted and released and a seal holder attaching portion attaching a seal holder holding the seal are provided around a pressure inflow port inside the inner surface of a housing receiving the working member such as a bellows cap, the seal is attached to the seal attaching portion, the seal holder is attached to the seal holder attaching portion by fixing means such as welding, bonding, screwing, engaging, or fitting, and a pressure relief path is provided for relieving the pressure in the seal attaching portion generated by attaching of the seal thereon.

Abstract: A master cylinder is connected to a vacuum booster which multiplies a brake operating force of a brake pedal. A push rod then transmits that multiplied force to an input piston and a pressurizing piston of the master cylinder. In addition, a hydraulic pump transmits a control pressure to the input piston and the pressurizing piston of the master cylinder such that a predetermined brake pressure is output from the master cylinder. A reaction force spring is also provided which applies a reaction force to the brake pedal which is greater than the reaction force transmitted from the vacuum booster to the operating rod.

Abstract: A brake module provides a first circuit, a second circuit, and a third circuit of pressurized brake fluid. A first set and second set of brake actuators are operated by the application of pressurized brake fluid. A first and second fluid separator unit are integrated between the first and second circuit, and the first and third circuit, respectively, for substantially preventing any intermixing of pressurized brake fluid between the first, second, and third circuits. The first and second fluid separator units include a moveable pressure boundary which enables the second circuit and third circuit of pressurized brake fluid to selectively act upon the first set and second set of brake actuators in response to the first circuit of pressurized brake fluid acting upon the first and second fluid separator units. At least one proportional valve selectively controls the pressurized brake fluid of the first circuit for acting on the first and the second fluid separator units.

Abstract: A system for supplying power to electromechanical brake systems is disclosed, generally comprising a primary power supply, one or more electromechanical brake units, and one or more capacitors for supplying auxiliary power to the brake units in the event of a failure of the primary power supply. In certain embodiments, the brake units comprise self-energizing electromechanical brake units. In other embodiments, each brake unit is supplied auxiliary power by its own capacitor.

Abstract: A brake system including a brake pad shaped and located to frictionally engage a brake rotor and an actuator shaped and located to act upon the brake pad to cause the brake pad to frictionally engage the rotor. The system further includes a sensor material which varies in resistance when the actuator acts upon the brake pad, wherein the sensor material includes an electrically insulating material with electrically conductive particles distributed therein. The system further includes a controller operatively coupled to the sensor material to detect a change in resistance of the sensor material.

Abstract: A method of braking force distribution and a braking force control system for a vehicle provide a proper control on distribution between braking force between front wheels and rear wheels by controlling braking force on a rear right wheel and a rear left wheel such that an actual wheel speed of each rear wheel follows a target wheel speed thereof. The method includes the steps of calculating a current target wheel speed of each rear wheel to be used based on an actual deceleration speed of at least one of the front wheels and a previous target wheel speed of each rear wheel; and controlling braking force on each of the rear wheels based on the thus calculated current target wheel speed.

Abstract: A brake fluid pressure control device for vehicles is provided capable of adjusting with a simple control a brake fluid pressure applied to a wheel brake. The control device includes for each system of an X-pipe arrangement: a cut valve as a linear solenoid valve provided to a first fluid pressure path; a pump capable of pressurizing brake fluid on a side toward the wheel brakes than the cut valve on the first fluid pressure path; and a control valve provided on the second fluid pressure path. The control device further includes: a target fluid pressure setting portion for setting a target fluid pressure for each of the wheel brake; and a valve actuating portion for drive-controlling the cut valve and the control valve, based on the target fluid pressure.

Abstract: The invention provides a shaft for a roller wheel which is excellent in strength and can achieve a weight saving. The invention provides a shaft for a roller wheel which rotatably supports a roller (3) outward fitted between both end portions (5a, 5b) in a state in which both end portions (5a, 5b) are fixed, and receives a load in a diametrical direction via the roller (3). Recess portions (6, 6) are provided on a side to which the load is not applied, on an outer peripheral surface corresponding to the roller (3). The load applying direction is a vertical direction. A cross sectional shape of the shaft in the recess portions (6, 6) is formed in a shape which is constituted by an upper circular arc portion (10) on an upper side, a lower circular arc portion (11) on a lower side, and a vertical connection portion (12) passing through a shaft axis (0) and connecting the upper circular arc portion (10) to the lower circular arc portion (11).

Abstract: A power enhancement control system for operation with at least one power enhancement device installed in a vehicle comprises a user interface having a display screen operable to display data and a plurality of buttons operable to receive user input, and a control unit coupled to the user interface and in data communication with the at least one power enhancement device. The control unit is operable to set at least one select one of the at least one power enhancement device to a discrete power level setting in response to at least in part to user input and input from a sensor measuring a vehicle operating condition parameter.

Abstract: A power IGBT device is monolithically integrated to include an input terminal suitable to receive an input voltage and an output terminal suitable to supply a current having a limited and predetermined highest value. Such IGBT device includes an IGBT power element inserted between said output terminal and a supply reference. The power element has a control terminal connected to the input terminal through a control circuit that includes at least a transistor inserted between the control terminal and the supply reference voltage and a resistive element inserted between the input terminal and the control terminal.

Abstract: A thermal type flow measuring apparatus includes a heating resistor provided in a thin part of a substrate and a bridge circuit for driving the heating resistor to have a preset heating temperature, wherein resistor elements on sides forming the bridge circuit are temperature sensitive resistors, a part or whole of at least one of the temperature sensitive resistors is placed in the thin part and near the heating resistor so that the temperature sensitive resistor is influenced by a heat of the heating resistor, and the preset heating temperature is increased as the flow of fluid is increased. This configuration introduces flow dependency into the heating temperature of the heating resistor.

Abstract: A manual operation device of the present disclosure allows a user to intuitively recognize a force pattern by providing a graphical representation of the force pattern on a display unit. The force pattern or a relationship between an operation position an operation unit of the manual operation device and a control value is visually represented as, for example, a two-dimensional line graph. In this manner, the reaction force is suitably adjusted to an operation force of the user to reduce an false operation of the manual operation device, because the user can easily controls the reaction force for achieving an improved operability.

Abstract: A vehicle equipment control system locks vehicle doors by any one of auto-lock and trigger lock systems. In the auto-lock system, a wide communication area is set that covers an entire vehicle compartment is set. In the trigger lock system, a narrow communication area is set that disables the communication with a portable unit carried by a user near a vehicle. When no response signal is received from the portable unit in the respective communication areas, the respective vehicle doors are locked. Accordingly, even when any one of the auto-lock and trigger lock systems is used, the portable unit is prevented from being left in the compartment, and the respective vehicle doors can be locked.

Abstract: Embodiments of a distributed front-end rectifier system in an electronics system and related methods are disclosed. One system embodiment comprises a first alternating current-to direct current (AC/DC) front end rectifier, a second AC/DC front end rectifier, and an AC power bus directly connected to the first AC/DC front end rectifier and the second AC/DC front end rectifier.

Abstract: An architecture for implementing an integrated capacity advantageously includes a capacitive block inserted between a first and a second voltage reference. The block is formed from elementary capacitive modules. An enable block is inserted between the first voltage reference and the capacitive block and includes switches connected to the elementary capacitive modules and driven on their control terminals by control signals. Each switch of the enable block is inserted between the first voltage reference and a first end of a corresponding elementary capacitive module. A verify and enable circuit is connected to the first voltage reference, as well as at the input of the first end of the elementary capacitive modules and at the output of the control terminals of the switches of the enable block.

Abstract: The present invention is a solid state relay having improved high speed turn on and lower heat dissipation of the power transistor. It uses a voltage level converter and AC-DC converter to provide a control input to an isolation transformer primary. The secondary of the isolation transformer is rectified and charges capacitors having capacitance much higher than that of control input of the power transistor. Transistors are coupled to a controller and the capacitors. The transistors are controlled by the controller to provide for the charging of the capacitors and later transferring of voltage from the capacitors into the capacitance of the control input of the power transistor so that it is charged quickly and turns on quickly. Similar operation occurs for quickly turning off the power transistor.

Abstract: A system detects for the presence of an identification (ID) code associated with an object. The detected ID code is communicated to a computer and power is provided to an energy consumption device. In response to detecting that the ID code has been absent for less than a first duration, an indication of the absence of the ID code is communicated to the computer and energy is withheld from the energy consumption device. If, however, the ID code has been absent for more than the first duration and motion is detected in a field of view, an intruder indication is communicated to the computer if the presence of the ID code is not detected within a second duration. However, if motion is not detected in the field of view, power is provided or withheld from the energy consumption device as a function of an ambient temperature of an environment.

Abstract: Machine with an electromechanical converter, where a linear movable piston (30) is placed in a tubular cylinder casing (20). The piston supports a row of centrally placed annular permanent magnets (38) which produce an electromagnetic field of force. This is effective towards a surrounding row of annular coils (21). Such a machine can be driven as a motor or as a generator with a minimum of movable parts. At the ends of the closed cylinder is formed a chamber (40, 50), which forms a gas spring. In its simplest form the machine acts as a vibrator or as a vibration-driven generator. Additionally, to the gas springs, and at least at one end of the cylinder casing, can be placed a helical spring which ensures the central position of rest of the piston in the case of vertical installation. The piston can be connected to an axial bar (34) which is lead out of the machine on its one end for transmission of kinetic energy to or from the machine.

Abstract: A driving apparatus includes a first magnet, second magnet, stator, first coil, second coil, first bearing, second bearing and rotor. The first and second magnets respectively have a magnetized portion in which S pole and N pole are alternately magnetized. The rotor has a magnetic pole portion opposite to each magnetized portion. The stator fixes the first magnet and second magnet to the same axis to rotatably support the rotor. The first coil magnetically excites a portion where the magnetic pole portion of the rotor faces the first magnet. The second coil magnetically excites a portion where the magnetic pole portion of the rotor faces the second magnet. Thereby, a driving apparatus is provided which stabilizes the quality by simplifying the configuration of a rotor and makes it possible to realize high speed of rotation and improvement of response speed by decreasing the moment of inertia of a rotor.

Abstract: The vehicle-use generator driven by a vehicle engine at a rotating shaft thereof includes a rotor rotatably mounted to said rotating shaft, a stator fixedly located radially outwardly of the rotor, a cooling fan fixed to the rotor to rotate together with the rotating shaft in order to generate cooling air for cooling the stator, and a housing housing the rotor and the stator and rotatably supporting the rotating shaft. The housing is provided with a plurality of ribs arranged in a circumferential direction of the rotating shaft so as to form a plurality of cooling air outlet windows. The plurality of the ribs are inclined with respect to a radial direction of the rotating shaft, and shaped such that widths of the plurality of the ribs are gradually changed thereamong cyclically in the circumferential direction.

Abstract: High-power electric machines must be intensively cooled. At the same time, it is necessary to ensure a high level of immunity to impurities. For this purpose, the rotor and stator sheet packs (41, 42, 61, 62) are embodied in two parts, thereby making it possible to carry out a two-sided ventilation, said parts being maintained separately in the middle by a ring (5, 7). Said ring (5,7) is provided with ribs (51, 52, 71, 72) in such a way that radial flow channels are formed between partial sheet stacks and ensure corresponding flow rate. In another embodiment, monoblock sheet stacks are provided with cooling channel extensions on either side of the sheet stack. Said cooling extensions alternate on the axial cooling channels in the peripheral direction and transport heated coolant outwards in respectively opposite directions.

Abstract: The aim of the invention is to optimize cooling of a rotor using simple means. A rotor is provided, comprising rotor pressure rings (1) such that at least one of the two rotor pressure rings (1) is configured in order to enable targeted guiding of the coolant through the axial bores (3, 3?) in the rotor. In a special embodiment, the rotor pressure ring (1) can be formed in such a manner that it produces, in several bores (3?) in the rotor sheet stack (8), a flow of coolant in a first direction and in other bores (3), a flow of coolant in the other direction. An even, opposite flow cooling can be exclusively obtained by the contour of the rotor pressure ring (1).

Abstract: This invention relates to a ventilator for an alternator-starter fixed on a rotor (4) with magnetic poles including: a metal insert (13) which is used to fix the ventilator to the rotor: an end shield plate (17) and ventilation blades (12) which are made of a plastic material and which are molded on the metal insert; a magnetic target (14) ensuring metal follow-up of the rotation of the rotor with the aid of at least one associated rotor.

Abstract: A wind turbine generator includes a stator having a core and a plurality of stator windings circumferentially spaced about a generator longitudinal axis. A rotor is rotatable about the generator longitudinal axis, and the rotor includes a plurality of magnetic elements coupled to the rotor and cooperating with the stator windings. The magnetic elements are configured to generate a magnetic field and the stator windings are configured to interact with the magnetic field to generate a voltage in the stator windings. A heat pipe assembly thermally engaging one of the stator and the rotor to dissipate heat generated in the stator or rotor.

Abstract: An inverter-integrated rotating electric machine includes an enclosure in which a vent hole is formed, an AC motor accommodated in the enclosure, the AC motor including a rotor and a fan whose rotation introduces external air into the enclosure from outside through the vent hole, the fan being fixed to the rotor, and an inverter unit accommodated in the enclosure and disposed in the vent hole. The inverter unit includes a power circuit portion and a control circuit portion whose control board is housed in a case which thermally isolates the control board from the power circuit portion. The power circuit portion is located at a position facing the fan and the control circuit portion is located upstream of the power circuit portion with respect to an inflow of the external air. Signal lines from the power circuit portion are connected to signal lines from the control circuit portion through holes formed in the case.

Abstract: A direct current (DC) brushless vibration motor comprises an inductive coil as the stator, and a magnetic element, which has a plurality of coplanar magnetic poles, as the rotor. The inductive coil is a single annular coil formed by a singly-wound conductive wire. The winding area corresponds to two magnetic poles of the magnetic element of the like polarity at opposite sides. The magnetic element has a centrifugal slot to make the gravity center of the magnetic element eccentric from the axis. When current is input into the inductive coil to form a magnetic field, the magnetic element and the magnetic field generated by the inductive coil repulse each other to generate rotation. The eccentric gravity center of the magnetic element can generate the vibration desired.

Abstract: A cooling module 67 includes a motor assembly 42 having a motor case 24 having at least one open end and including mounting brackets 30 integral therewith. Each bracket has only a bottom portion 32 connected with the motor case. An armature assembly is disposed in the motor case and includes a rotatable shaft 46. A brush card assembly 56 is associated with the armature assembly, and an end cap 60 is disposed over the brush card assembly and partially covers the open end of the motor case and thereby defining a non end cap covered motor portion 63. A fan 64 is coupled to an end of the shaft and has a hub substantially covering one end of the motor assembly. A shroud 74 has a motor cover 76. Fastening structure 78 is associated with the shroud and engaged with the brackets thereby mounting the motor assembly to the shroud, with the motor cover substantially covering the end cap and the non end cap covered motor portion.

Abstract: To provide a hydrodynamic bearing device with high reliability, with which reductions in size, weight, and thickness can be achieved, as well as a motor and a disk driving apparatus that make use of this hydrodynamic bearing device. The hydrodynamic bearing device pertaining to the present invention comprises a shaft 10, a thrust flange 16, a sleeve 11, a seal plate 21, and a retaining plate 20. A radial dynamic pressure bearing is formed in the radial direction gap between the shaft 10 and the sleeve 11, and a thrust dynamic pressure bearing is formed in the thrust dynamic bearing gap between the sleeve 11 and the thrust flange 16. A communicating hole 11d is formed for communicating between the gap between the sleeve 11 and the seal plate 21 and the thrust direction gap between the sleeve 11 and the thrust flange 116.

Abstract: A thrust plate for supporting a bottom end of a shaft in an axial direction is provided on a top surface of a bottom section of a bearing housing. An attracting magnet for attracting the shaft, which is made of a magnetic material, in the axial direction is provided below the thrust plate. A substantially cup shaped magnet holder is provided surrounding a periphery of the attracting magnet. The magnet holder retains the attracting magnet by a bottom section and a radial periphery surface of the attracting magnet. The magnet holder is integrally formed, by an insert molding, with the bottom section of the bearing housing.

Abstract: A magnetic bearing device (1) for rotatably supporting a shaft (20) for rotation about a rotation axis (101) is disclosed. The device (1) comprises a first active radial bearing (5), one or more first radial displacement sensors (81), and an axial bearing (6, 7). At least a part of the axial bearing (6, 7) is disposed between the first active radial bearing (5) and the first radial displacement sensors (81) when viewed in an orthogonal projection onto the rotation axis (101). A vacuum pump including the magnetic bearing device (1) and a multiple-sensing unit (8) are also disclosed.

Abstract: A magnetic bearing assembly utilizes repulsive magnetic forces between components, having magnetic sources, of the bearing at two or more gaps which are angled with respect to an axis of the inner component. Each gap provides force vectors in two directions, while allowing for relative movement of the components in a third direction. The gaps collectively provide a stable equilibrium in the first two directions, meaning that, in response to relative movement of the components in the first or second direction causing a decreased gap width, magnetic repulsive forces at the decreased gap width urge the components away from each other to return to equilibrium. The components of a radial magnetic bearing according to the invention move relative to one another rotationally, and the components of a linear magnetic bearing according to the invention move relative to one another longitudinally.

Abstract: A method for manufacturing a rotor assembly. The method includes providing a stub shaft having a first part and a second part, providing a magnet between the first part and the second part, and compressing the magnet between the first part and the second part using a connecting device. The method also includes drilling a hole through the first part and the magnet, cooling an inner shaft, and inserting the inner shaft into the hole.

Abstract: A permanent magnet rotor for a brushless electrical machine has a rotor shaft and a cylindrical plastic cage. Permanent magnets are inserted in this plastic cage. The plastic cage has dovetailed retainers. The permanent magnets are trapezoidal in shape and are inserted so as to fit tightly in the dovetailed retainers.

Abstract: A permanent-magnet generator includes a flywheel having a ringlike portion and a bottom portion which closes off one end of the ringlike portion and a plurality of protrusions bulging inward from the bottom portion of the flywheel. An irregular surface portion is formed in each of the protrusions for producing turbulence when the flywheel rotates, the irregular surface portion being irregularly shaped in section along a circumferential direction of the flywheel.

Abstract: The machine (1) comprises: a rotor (2) with a permanent magnet (5), for producing an annular distribution of magnetic polarities (N, S) of angularly alternating sign about the axis of rotation (A-A) of the rotor (2), within a magnetized surface (5) lying in a plane essentially perpendicular to said axis (A-A), and a stator (3) including: a flow-conveying structure (16) formed as one piece with a pressure-shaped mass of insulated ferromagnetic particles; this structure (16) having an annular base portion (17) from which first and second arms (18; 19) extend substantially parallel to the axis of the rotor (A-A), said arms being situated at a first and a second radial distance, respectively, from this axis (A-A) and angularly alternating with respect to each other; the ends (18a; 19a) of these first and second arms (18, 19) frontally facing said magnetized surface (5a) of the rotor (5) from which they are separated by an air-gap (21); and a winding (23) arranged coaxially with the rotor (2), in an annular region

Abstract: A power disk alternator includes a rotor of circular cross-section arranged to rotate about an axis having at least two disks facing each other and defining at least one gap therebetween, and a shaft connected to an external source for driving the shaft in rotation about the axis. Each disk has a circular array of arcuately-spaced magnetized elements located adjacent to its periphery, each of the magnetized elements having surfaces of opposite polarity and being disposed side-by-side in a like polarity configuration. Magnetized elements of one disk face magnetized elements of the other disk of opposite polarity, creating magnetic fields between the opposite polarities in the gap between the two disks. The alternator also includes a stator comprising at least one fixed nonmetallic disk having a conductor path comprising at least one uninterrupted conductor on at least one surface thereof, each stator being located in one of the at least one air gap.

Abstract: An ac motor is provided which includes a plurality of looped windings each of which extends in a circumferential direction of a stator. The stator is equipped with N stator pole groups made up of magnetic poles arranged along a circumference thereof. The looped windings are disposed adjacent each other in an axial direction of the stator. The number P of the rotor magnetic poles and the number M of the magnetic poles of the stator are selected to meet a relation of M<(P/2)×N. This structure permits the number of the magnetic poles of the stator to be decreased, which ensures desired air gaps between the magnetic poles of the stator, thus minimizing a leakage of magnetic flux between the magnetic poles of the stator to increase torque to be outputted by the motor.

Abstract: A winding method of a motor stator comprises the steps of serially winding a wire on a plurality of odd poles along a first direction; pulling out a common terminal from the wire to serve as a first power terminal; serially winding the wire on a plurality of even poles along a second direction; and knotting a start and an end of the wire to form a second power terminal. A single-phase motor comprises a stator and a rotor. The stator has a plurality of poles and a wire, and the rotor cooperates with the stator. The wire serially winds odd poles of the plurality of poles along a first direction and then serially winds even poles of the plurality of poles along a second direction.

Abstract: An axial gap dynamoelectric machine comprises first and second stators disposed coaxially with an intermediate rotor. The stators are selectively aligned with an axial offset between the positions of their respective teeth and slots. The stators comprise toroidal cores having laminated layers composed of a material selected from the group consisting of amorphous and nanocrystalline metals and optimized Fe-based alloy. Optionally, the machine further comprises misalignment means for adjusting the offset of the stators. Adaptive adjustment permits the machine to be operated to in a mode that reduces the back EMF of the motor, allowing constant voltage to be maintained as speed is increased. Reducing back EMF also allows a wider range of operating speed, especially in combination with use of high pole counts. Alternatively, the machine can be operated, e.g. at lower speed, in a constant torque mode. The machine may exploit the high pole count achievable by use of improved soft magnetic materials.

Abstract: An electric motor has an armature rotatably accommodated inside a motor housing and a pair of magnets fixed to an inner surface of the motor housing so as to face the armature. The armature has an armature core 17 fixed to a rotating shaft 16, and ten slots S1 to S10 formed on the armature core accommodate coils. These slots S1 to S10 are of four types that are different in shape, thereby enhancing a lamination factor of each coil. Also, these slots S1 to S10 are formed so as to be tilted in a rotating direction with respect to an axial direction of the rotating shaft 16. Therefore, a magnetic imbalance caused by the slots S1 to S10 being formed in varying shapes is uniformized.

Abstract: An electric motor includes a stator including a stator core made of a plurality of split cores joined to each other and a stator winding wound on the stator core, and an admixture interposed in a joint between the split cores and comprising a binder mixed with a granular magnetic substance.

Abstract: An electrical generator comprising a stator having stator windings and a rotor having rotor windings. The rotor and the rotor windings extend about the stator windings. The rotor includes an annular rotor housing. On an inside of the rotor housing are mounted the rotor windings. The stator includes an end member with a central member extending therefrom. The stator windings are mounted on the central member. The stator also includes an annular stator housing that extends about the central member, including the stator windings, and the rotor. The end member attaches to the stator housing thereby positioning the stator windings in a central location. The stator housing and the end member enclose the stator windings and the rotor windings therein. The rotor housing further includes a rotor mounting member on an end. The stator housing includes a stator mounting member on an end thereof, and a stator windings mounting member on an opposite end.

Abstract: An electric motor has a field assembly, such as a stator, for a dynamoelectric machine has field coils that are wound to a net shape. Lead wires are brought out from the ends of each field coil. The field coils are insulated with insulating sleeves or insulating slot liners. The field coils are assembled with stator core pieces, such as pole pieces and return path pieces, into the stator. The stator core pieces are formed prior to being assembled with the field coils. In an aspect of the invention, the pole pieces and return path pieces are separately formed and then assembled together with the field coils, which have also been separately formed.

Abstract: An electric power steering apparatus includes; a DC brush motor, and a boss arranged between an output shaft of the motor and an input shaft driven by the motor, for transmitting a rotational force of the motor from the output shaft to the input shaft by the boss per se. A weight of the boss is equal to or larger than 10% of a weight of a rotor of the motor. An electric power steering apparatus includes; a DC brush motor and a boss arranged between the output shaft of the motor and the input shaft driven by the motor, for transmitting the rotational force of the motor from the output shaft to the input shaft by the boss per se. A moment of inertia of the boss is equal to or larger than 10% of a moment of inertia of the rotor of the motor.

Abstract: A rotor assembly for an electric machine, which includes a shaft; a core positioned on the shaft; a field winding surrounding the core; a plurality of pole fingers configured to rotate with the shaft; the plurality of pole fingers each having a tip end, a root end, a straight trailing edge, and a curved leading edge; wherein the tip end is offset from the root end in a trailing direction with respect to rotation.

Abstract: A solid-state energy converter with a semiconductor or semiconductor-metal implementation is provided for conversion of thermal energy to electric energy, or electric energy to refrigeration. In n-type heat-to-electricity embodiments, a highly doped n* emitter region made of a metal or semiconductor injects carriers into an n-type gap region. A p-type layer is positioned between the emitter region and gap region, allowing for discontinuity of corresponding Fermi-levels and forming a potential barrier to sort electrons by energy. Additional p-type layers can optionally be formed on the collector side of the converter. One type of these layers with higher carrier concentration (p*) serves as a blocking layer at the cold side of the converter, and another layer (p**) with carrier concentration close to the gap reduces a thermoelectric back flow component. Ohmic contacts on both sides of the device close the electrical circuit through an external load to convert heat to electricity.

Abstract: In accordance with an embodiment of the present invention, an electrostatic actuator has a base having a plurality of base pillars formed thereon and has a stage having a plurality of stage pillars formed thereon. The controlled application of voltage signals to the base pillars and/or the stage pillars results in electrostatic force that effects movement of the stage with respect to the base.

Abstract: MEMS devices (100) and methods for forming the devices have now been provided. In one exemplary embodiment, the MEMS device (100) comprises a substrate (106) having a surface, an electrode (128) having a first portion coupled to the substrate surface, and a second portion movably suspended above the substrate surface, and a stress-release mechanism (204) disposed on the electrode second portion, the stress-release mechanism (204) including a first slot (208) integrally formed in the electrode. In another exemplary embodiment, the substrate (106) includes an anchor (134, 136) and the stress-release mechanism 222 is formed adjacent the anchor (134, 136).

Abstract: A piezoelectric thin-film acoustic wave device formed of a piezoelectric thin film of AlN on the +C plane and having the polarization strength of not lower than 0.63×10?20 F/V and an information processing unit using the same are disclosed. This is the result of the inventors having studied the factors other than the C-axis orientation affecting the electromechanical coupling factor and developing a method of improving the electromechanical coupling factor in view of the occasional fact that the electromechanical coupling factor cannot be improved by improving the C-axis orientation and the electromechanical coupling factor required for the piezoelectric thin-film acoustic wave device is not obtained. In such a case, the receiving sensitivity of the receiving system may be deteriorated and the transmission strength of the transmission system is required to be increased undesirably having an adverse effect on the power saving efforts.