Abstract: A track roller assembly for a track-type machine such as an excavator or a tractor includes an outer surface with no fluid ports and an inner surface free from any fluids. The track roller includes self-lubricated bushings, which include a substrate that has lubricating properties, such as a substrate that carries a solid lubricant, which allows the track roller to require no liquid lubrication requiring regular maintenance. The bushing is sealed to prevent debris from entering a clearance between the bushing and the shaft as well as preventing any of the bushing's solid lubricant from escaping.

Abstract: Undercarriage assembly components of track-type machines having a metallurgically bonded wear-resistant coating and methods for forming such coated undercarriage assembly components is taught herein. The bodies of the undercarriage assembly components, formed of an iron-based alloy, have a hard metal alloy slurry disposed on a surface or into an undercut or channel and then fused to form a metallurgical bond with the iron-based alloy. The wear-resistant coating comprises a fused, metal alloy comprising at least 60% iron, cobalt, nickel, or alloys thereof. The portion of the outer surface of the undercarriage assembly components having the wear-resistant coating corresponds to a wear surface of the component during operation of the endless track of the track-type vehicle.

Abstract: A method and a device are provided for providing a supply voltage for the consumers of a vehicle electrical system, using generator units connected in parallel. The measurement voltage inputs and the monitor outputs of the controllers of the generator units are used in the initialization phase for the assignment of master or slave function, as well as for address assignment if warranted, and during later parallel operation are used to bring the degree of utilization of the generators of the generator units connected in parallel into agreement.

Abstract: An electronic device for supplying an operating voltage to field-proximal equipment, in which a bus supplies the operating voltage to the field-proximal equipment via a current loop between a field device and a voltage supply unit which are connected to the bus. The field-proximal equipment includes control means for adaptive operating-voltage matching to an instantaneous power demand. The control means utilizes the energy which is still freely available in the loop.

Abstract: A device for supplying power to a load, requiring both a pre-determined supply of electrical power and high power for short durations of the operating cycle of the load, where the operating cycle is repeated. The power supply device includes a connection to an electrical grid, an AC voltage transformation circuit, a voltage rectification means and a plurality of DC/DC converters mounted in series to terminals of the load. Each of the DC/DC converters has a storage capacitor mounted in parallel to it and at least one of the DC/DC converters is supplied directly by the voltage rectification means. At least another one of the DC/DC converters is not supplied directly by the voltage rectification means. The power supply device may compensate for losses in the power supply device and load, and may substantially continually and uniformly balance voltages at terminals of the storage capacitors.

Abstract: A power distribution system including a first power distribution unit connected to a power supply and a second power distribution unit connected to the first power distribution unit, the second power distribution unit being configured to split power provided from the first power distribution unit into a constant power source and a selectively active power source.

Abstract: [Task] In a power conversion system, a variation in PCS alternating current voltage is suppressed during a change operation to a self-contained run according to an instantaneous voltage drop-service interruption. [Means for solving the task] During an ordinary system voltage stabilization, with change switch 25 changed to the output side of APR control circuit 22 and change switch 400 changed to the output side of charge/discharge run PWM command value preparing section 200, the power conversion system is run in a charge/discharge run mode. If the instantaneous voltage drop or the service interruption occurs, change switch 25 is changed to the output side of the self-contained run change prior current command value preparing section 60 and the constant current discharge run is carried out in which the electric power is discharged for a predetermined time duration in response to the current command value of the self-contained run change prior current command value preparing section 60.

Abstract: There is described a plant (1) for converting solar energy into electrical energy, comprising a photovoltaic generator (2a) including at least one string (2) of photovoltaic modules (M), a pulse generator (31) able to send electrical pulses to the input of the string (2), a signal detector (OP) arranged at the output of the string (2) and able to detect, at the output of the string (2), the presence of a signal which is a function of the electrical pulses at the input, and alarm means connected to the signal detector (OP) and able to generate an alarm in the event that there is no signal at the output of the string (2).

Abstract: DC blocking capacitor and resistor are coupled in series with electricity storing section at its both ends, and ON/OFF circuit is coupled in parallel with resistor. Peak voltage holding circuit is coupled in parallel with ON/OFF circuit, and current sensing section is coupled in series with storing section, and an output from current sensing section is supplied to peak current holding circuit. In the structure of the storage device discussed above, a flowing direction of an electric current from a positive electrode to a negative electrode of storing section is referred to as a positive direction. ON/OFF circuit is controlled such that circuit is turned on when the current flows in a negative direction, and such that it is turned off when the current flows in the positive direction. An internal resistor of storing section can be found based on a peak voltage resulting from the control and held by circuit and a peak current resulting from the control and held by circuit.

Abstract: A resonant, contactless, RF power coupling suitable for high power-density applications and for use in an ocean environment is disclosed. In the illustrative embodiment, the power coupling includes a transmit coupling and a receive coupling, each of which include a resonant element. A high-powered RF generator is coupled to the transmit coupling and a rectifier circuit is coupled to the output coupling. Each of the resonant elements is disposed in its own electrically-conductive canister and advantageously potted in an appropriate insulating dielectric. Each canister has an open end to facilitate inductive coupling between the two resonant elements. In order to exclude seawater from the interface between the canisters, a seal of compliant material is disposed therebetween.

Abstract: A non-contact power transmission system comprises a power receiver and a power transmitter. The power transmitter includes a transmitter coil. The power receiver includes a module which comprises a coil sheet and a soft magnetic sheet stacked on the coil sheet. The coil sheet includes a receiver coil. Electric power is transmitted from the transmitter coil to the receiver coil. The soft magnetic sheet comprises a pair of insulation films and a soft magnetic member hermetically interposed between the insulation films.

Abstract: A switch arrangement comprises a first and a second terminal (1, 2), a first switch (3), a current sensor (10), a first and a second control circuitry (20, 30). The first switch (3) comprises a control terminal (4), a first terminal (5) which is coupled to the first terminal (1) of the switch arrangement and a second terminal (6) which is coupled to the second terminal (2) of the switch arrangement. The current sensor (10) is realized for the measurement of a load current (Iload) flowing through the first switch (3). The first control circuitry (20) is coupled to an output terminal of the current sensor (10) and to the control terminal (4) of the first switch (3). The second control circuitry (30) is coupled to the control terminal (4) of the first switch (3).

Abstract: A hot swap controller includes a shunt resistor (32-1,2) and a power transistor (37-1,2) having a source coupled to a load maintains the first power transistor in a fully-turned-on condition to cause it to deliver a load current contribution (I1,2) which flows through the shunt resistor and the power transistor to the load (25). Current sensing circuitry (35-1,2) produces a first control signal (V45-1,2-V47-1,2) equal to the difference between a DC component (V47-1) proportional to a first load current contribution (IL1) flowing in the first shunt resistor and a feedback-based component (V45-1). A control amplifier (49-1,2) produces a second control signal (V51-1,2) in response to the first control signal to modify a drive signal (53-1) to the power transistor so as to reduce a channel resistance of the power transistor if the first control signal exceeds a predetermined level.

Abstract: A mechanism to tap an electrical source which uses an aircraft (preferably a lighter than air balloon) tethered by a conductive line. The conductive line is extended/withdrawn by a winch motor to adjust the altitude of the aircraft. The conductive line is isolated from the ground and an electrical conductor is connected to the conductive line and to an electrical load. In this manner, static electricity generated in the atmosphere is gathered for use.

Abstract: There is disclosed a method of detecting the configuration of a network having a feeder line with a plurality of feeder meters and distribution transformer meters (DTMs) coupled thereto and with one or more customer meters and/or customer configuration modules coupled to the distribution transformers. The method includes the steps of having each of the feeder meters transmit a uniquely identifiable signal through the feeder line. The DTMs then identifying the phase of each of the uniquely identifiable signals and then transmitting the phase of each of the uniquely identifiable signals to a data collector along with a unique DTM identifier. The connectivity relationship between the feeder meters and distribution transformer meters is then extrapolated by comparing the phase information transmitted by the DTMs.

Abstract: A power management system for coupling to a worksite power-supply network and a PoE (Power over Ethernet) network, includes a power receiving terminal for receiving an input operating voltage with 24 volt DC from the worksite power-supply network, a voltage converter for converting the input operating voltage into an output operating voltage, and a power output terminal for transmitting the output operating voltage to a powered device coupled to the PoE network.

Abstract: The method of controlling a multi-converter having N converters with series-connected inputs and parallel-connected outputs is provided in the present invention. The proposed controlling method includes steps of: causing each of the N converters to have an intermittent operating period, an intermittent operating time interval and an intermittent operating duty ratio equal to a value of the intermittent operating time interval divided by a value of the intermittent operating period; and causing the N converters to operate alternately with the intermittent operating period, wherein N is an integer larger than one.

Abstract: A shock prevention device for an electrical distribution board having at least one incoming terminal and one or more bus conductors for distributing electrical power from the incoming terminal to a plurality of outgoing conductor terminals projecting from a housing of the distribution board, the shock prevention device comprising an insulating body adapted to receive and shroud at least one conductor terminal; a moveable element moveable relative to the body so as to place the device in one of a first configuration in which the device can be fitted to or removed from the distribution board so as to cover the exposed terminal and a second configuration in which the device is braced between the conductor terminal and part of the distribution board housing, whereby removal of the device is prevented; and means for locking the moveable element in the second configuration.

Abstract: An electromagnetic machine (1) comprises an electrical conductor vane (7) disposed between two magnetic arrays (3). The electrical conductor vane (7) comprises a plurality of electrically insulated conductors (35), wherein when the conductors (35) are disposed in magnetic fields produced by the magnetic arrays (3) and when current flows in the conductors (35), an electromagnetic force is induced to cause movement of the magnetic arrays (3) relative to the electrical conductor vane (7) and wherein the set of conductors (35) substantially fills the gap between the magnetic arrays (3) through which the magnetic fields pass.

Abstract: A method to set a small air gap by improving the parallelism between the armature and the stator assembly includes attaching a guide sleeve to a pole piece and grinding the surfaces on the guide sleeve and the pole piece after the attaching step to improve parallelism. By decoupling the armature assembly from a valve member in a fuel injector assembly, an improved parallel orientation between the armature assembly and the stator assembly can be achieved by grinding the outer surface of the guide sleeve perpendicular to the planar bottom surface of the stator assembly in a single chucking. When the solenoid is energized, the armature is at a final air gap with the flux piece parallel to the bottom surface of the armature and the armature not in contact with the valve member.

Abstract: A generator or motor apparatus having a stator formed of a plurality of pairs of parallel stator segments is provided The pairs of parallel segments are connected together to form a channel in which an annular rotor moves The annular rotor also comprises a plurality of detachable segments connected together to form an annular tram operable to move through said channel Each stator segment comprises a stator winding set and each rotor segment comprises a magnet dimensioned to fit between the parallel spaced apart stator segments The apparatus may include a support structure, the rotor segments being slidably coupled to the support structure and the stator segments being attached the support structure The apparatus may be a rim generator, wind turbine generator or other electrical machine The stator winding set includes a winding, and may include other electrical or electronic components, including possibly a power factor capacitor, direct current filtering capacitor, supercapacitor, and one or more diodes The s

Abstract: A conductor bar for a stator of a generator includes a plurality of internal conductor elements; an insulation wound around the plurality of internal conductor elements so as to externally enclose the plurality of internal conductor elements, the insulation including impregnated glass/mica bands; and at least one interlayer disposed between the insulation and the plurality of internal conductor elements so as to improve a mechanical connection between the plurality of internal conductor elements and the insulation.

Abstract: A cooling jacket for a motor includes an extruded jacket body having an outer peripheral surface, an inner peripheral surface, and a plurality of discrete cooling passages located between the inner and outer peripheral surfaces that provide multi-directional fluid flow. A fluid inlet is provided to direct cooling fluid into the jacket body and a fluid outlet to direct heated fluid away from the jacket body.

Abstract: A terminal structure for a vehicle-mounted motor includes a motor body having a motor terminal 28 connected to a coil, and a circuit body 5 holding a circuit board 18 for controlling a rotation of the motor body and is assembled in the motor body, wherein a stress relaxation section 35 is provided in an intermediate of an intermediate conductor 34, in order to reduce stress acting on the intermediate conductor 34 connecting the motor terminal 28 and the circuit board 18 and to thereby improve the conductive reliability of electrical joint.

Abstract: A vibration motor is provided. The vibration motor includes a case, a shaft, a rotor, a printed circuit board (PCB), and a coil. The case includes a lower case and an upper case. The case includes an insulating coating layer on the lower case thereof. The shaft is supported by the upper case and lower case. The rotor is rotatably coupled to the shaft to generate a vibration. The PCB is fixed to the lower case. The coil passes through the PCB and fixed to the lower case. the coil interacts with the rotor.

Abstract: A spindle motor includes: a stator yoke having a circular cylinder shape; a rotor magnet disposed opposite to the stator yoke with an air gap therebetween; a sheet-like coil disposed at a surface of the stator yoke opposing the rotor magnet; and a bearing structure, wherein the sheet-like coil includes a plurality of individual coils having a spiral-shape and arrayed in a circumferential direction, and a pattern made of a same material as the individual coils and disposed between two adjacent individual coils.

Abstract: A vehicular alternator is provided which can suppress the vibration of a circuit board. The vehicular alternator has a rectifier that includes a plurality of diodes forming a full-wave rectifier circuit, a pair of negative and positive terminal side heat sinks that hold the diodes, and a circuit board connecting the diodes and a stator coil to one another, wherein the negative and positive terminal side heat sinks and the circuit board are mounted on a casing at a plurality of mounting portions, which are superposed with one another in an axial direction of a shaft, by using mounting members. Between adjacent ones of the mounting portions, there are formed abutment portions in which the circuit board is superposed on and placed in abutment with the negative terminal side heat sink or the positive terminal side heat sink, and the abutment portions are fixed to each other by rivets.

Abstract: Disclosed herein is a sintered magnet motor having a sintered magnet rotor, the rotor comprising: a ferromagnetic material comprising iron as a main ingredient to be sintered; a fluorine compound or an oxyfluoride compound formed in the inside of a crystal grain or to a portion of a grain boundary of the ferromagnetic material; and at least one of alkalis, alkaline earth elements, and rare earth elements contained in the fluorine compound or the oxyfluoride compound; a portion of the fluorine compound or the oxyfluoride compound being distributed with a concentration gradient established from the surface to the inside of the ferromagnetic material, and a rare earth element being distributed with a concentration gradient established between the grain boundary surface and the parent phase of the ferromagnetic material, wherein the concentration distribution of the fluorine compound is asymmetrical when viewed from the pole center of the sintered magnet rotor.

Abstract: The present system is generally relates to a new method and apparatus for the creation of a DC electric pulse involving the use of stationary magnets, including permanent magnets and electro-magnets, stationary conductor coils, and a magnetic shield that opens and closes magnetic gateways. When a magnetic gateway is opened and closed, the magnetic flux is disturbed. The magnetic flux penetrates the coil at differing proportions, creating a flow of electrons in the conductor. The present system provides for less heat generation and produces substantially no exhaust fumes or radiation. Further, the present system operates with very low hysteresis losses, eddy currents, magnetic repulsion or drag, destructive back emf, and minimal impedance losses.

Abstract: A method of manufacturing a squirrel-cage rotor includes: providing a laminated stack; attaching a plurality of rotor bars to the laminated stack, wherein the plurality of rotor bars each include opposite longitudinal ends; and die-casting a pair of end rings at the longitudinal ends of the plurality of rotor bars.

Abstract: A method for reducing leakage currents in an electric machine is described. The method includes positioning a plurality of leakage current shields between windings and teeth of a stator, and coupling at least one of the plurality of leakage current shields to a reference point, wherein an electric potential at the reference point is not earth ground.

Abstract: A stator core includes: an assembled stator core formed of annularly arranged, divided stator cores; a fixing member disposed at an outer circumferential surface of the assembled stator core and capable of pressing the divided stator cores inward in a radial direction of the assembled stator core to annularly arrange and thus fix the divided stator cores; and a weak portion provided between the divided stator cores and the fixing member and deformable by a force exerted from the fixing member to press the divided stator cores.

Abstract: A brushless slip ring has a first conductive rotating member, and a second conductive non-rotating member that is positioned a predetermined distance away from the first conductive rotating member. A conductive semi-solid material electrically couples the first conductive rotating member to the second conductive non-rotating member. The semi-solid material is configured to transfer electric current from the rotating member to the non-rotating member.

Abstract: This present invention relates generally to manufacturing objects. More particularly, the invention relates to a method and structure for fabricating an out-of-plane compliant micro actuator. The compliant actuator has large actuation range in both vertical and horizontal planes without physical contact to the substrate. Due to fringe field actuation, the compliant actuator has no pull-in phenomenon and requires low voltage by a ‘zipping’ movement compared to conventional parallel plate electrostatic actuators. The method and device can be applied to micro actuators as well as other devices, for example, micro-electromechanical sensors, detectors, fluidic, and optical systems.

Abstract: A mechanism to tap an electrical source which uses an aircraft (10) (preferably a lighter than air balloon) tethered by a conductive line (12). The conductive line (12) is extended/withdrawn by a winch motor (13, 14) to adjust the altitude of the aircraft (10). The conductive line (12) is isolated from the ground (17) and an electrical conductor (6) is connected to the conductive line and to an electrical load (5). In this manner, static electricity generated in the atmosphere is gathered for use.

Abstract: The present invention provides meta-materials with an actively controllable mechanical property. The meta-material includes a deformable structure and a set of activation elements. The activation elements are controllable between multiple states. The meta-material includes a first value for a mechanical property when one or more of the activation elements is in the first activation state and includes a second value for the mechanical property when the activation elements have been activated to the second activation state. In one aspect, the meta-material resembles a composite material where the connectivity between the component materials or shape and arrangement of the component materials is dynamically controllable so as to affect a mechanical property of the meta-material.

Abstract: The invention relates to waveguide components based on acoustic surface waves, comprising at least one interdigital converter for exciting acoustic surface waves in a piezoelectric substrate or a piezoelectric layer. The object of the invention is to change known waveguide components, comprising at least one interdigital converter for exciting acoustic surface waves in a piezoelectric substrate or a piezoelectric layer, such that no reflectors are necessary with an otherwise equivalent function. The inventive waveguide components are characterized in that the interdigital converter(s) a) is or are disposed at a defined distance over the piezoelectric substrate or the piezoelectric layer for exciting wave fields, or b) is or are in contact with the piezoelectric substrate or the piezoelectric layer, wherein in version a) the piezoelectric substrate is designed as a ring and the piezoelectric layer is designed as a circular region.

Abstract: A piezoelectric driving device including a laminated body having a base that is capable of being deformed by applying force, a first piezoelectric body that is formed on a first face of the base directly or via another layer, and a second piezoelectric body that is formed on a second face of the base substantially parallel to the first face directly or via another layer, a driving voltage generating section that generates a driving voltage according to a displacement amount of the laminated body, a compensating voltage generating section that generates a compensating voltage compensating for hysteresis caused by the displacement of the laminated body by the driving voltage, and a voltage applying section that applies each of the driving voltage and the compensating voltage to each of the first piezoelectric body and the second piezoelectric body.

Abstract: A piezoelectric component with a body in which electrically connected transducer elements are realized is disclosed. The transducer elements are separated from each other by an essentially field-free neutral region of the body. A first transducer element has electrically connected first electrodes, and a second transducer element has electrically connected second electrodes. In addition, at least one third electrode, which is arranged in the first and second transducer element is provided. At least three of the first and third electrodes are arranged in an alternating sequence. At least three of the second and third electrodes are arranged in an alternating sequence. The neutral area is perpendicular to the planes in which the electrodes are arranged.

Abstract: A piezoelectric motor that includes a rotor and a stator having a surface on which a driving member that is in contact with the rotor for rotating the rotor is disposed. The stator includes a stator body, a plurality of piezoelectric elements disposed on a surface of the stator body, and an electrode wiring plate integrally formed with the stator body. The piezoelectric elements are electrically connected to a plurality of electrodes formed on the electrode wiring plate through a plurality of wiring lines. The wiring lines are constituted by an electroconductive film extending from a surface of the stator body to the electrodes.

Abstract: In one embodiment, an actuator device includes a first electroactive polymer layer, including an active electroactive polymer layer portion. In one embodiment, the active electroactive polymer layer portion is controllably shiftable between a substantially neutral state and a buckled state.

Abstract: A bending transducer device for generating electrical energy includes at least one elastically deformable support structure, one piezoelectric element, and a bearing device. The piezoelectric element is configured and situated on the support structure in such a way that the piezoelectric element is deformable due to a deformation of the support structure caused by vibration, and the support structure is supported vibration-capably in at least one bearing of the bearing device, the bearing being configured as an articulated receptacle, e.g., a hinge.

Abstract: A field device of a process automation installation is provided. The filed device includes an electrical connection configured to be connected to a superordinate control unit, a fluidic pressure connection configured to supply an operating pressure as an auxiliary energy, and a means for local feeding with electrical energy integrated into the field device. The means for local feeding with electrical energy includes a fluidic operating voltage production unit, which includes a piezo-element arrangement having at least part of the operating pressure is applied thereto to produce the electrical energy for the local feed.

Abstract: The present invention provides devices and structures and methods of use thereof in electrochemical actuation. This invention provides electrochemical actuators, which are based, inter-alia, on an electric field-driven intercalation or alloying of high-modulus inorganic compounds, which can produce large and reversible volume changes, providing high actuation energy density, high actuation authority and large free strain.

Abstract: In one aspect, an assembly includes an enclosure with an opening and a door for closing the opening. A first joining member is secured to the enclosure and a second joining member is secured to the door. The first and second joining members can be mechanically joined to one another in any one of a plurality of attitudes relative to one another and to be separated from one another. A third joining member is joined to at least one of the first and second joining members to establish an alignment position for the first and second joining members relative to one another. Following the separation of the first and second joining members, the alignment position established by the third joining member allows the first and second joining members to be rejoined in the same attitude as the attitude in which they were joined prior to being separated.

Abstract: A cart, useful in transporting medical equipment within a medical facility, is constructed of lightweight materials, such as foam filled panels. It features a drawer module that may be adapted to receive a number of drawers for different sizes for adaptable use. The foam-filled panels may be constructed for instance by creating foam core by machining or molding, and attaching both inner and outer plastic panels made using thermoforming or other similar process.

Abstract: A supporting device of the invention comprises a main body, a shaft, and a rotating component. The main body comprises a sliding path and an opening. The shaft and the rotating component can slide along the sliding path. The rotating component is connected to the shaft. The shaft and at least a part of the rotating component can then be extended beyond the main body through the opening. Through the aforementioned configuration, the shaft can rotate with respect to the main body when the shaft and at least a part of the rotating component are extended beyond the main body.

Abstract: A rack server includes a replaceable module, and a frame for supporting the replaceable module. Two slots are formed on both sides of the frame respectively. The rack server further includes a cover installed on the slots in a slidable manner. The cover includes a first housing and a second housing pivoted to the first housing. When the second housing rotates to a first position relative to the first housing, the second housing covers the replaceable module. When the second housing rotates to a second position relative to the first housing, the second housing can not cover the replaceable module. The rack server further includes a first fixing mechanism installed on a side of the slot of the frame for fixing the second housing on the frame when the second housing rotates to the first position relative to the first housing.

Abstract: A drawer based storage system is disclosed. It comprises a drawer adapted to be supported on a support frame having sides and, preferably, a front. The drawer is supported for pivotal movement between a closed, generally horizontal position and an open, non-horizontal position and, further, for sliding movement, only when the drawer is in the open position, between a retracted position and an extended position.

Abstract: In a pull arrangement including a housing with a guide structure movably supporting a carrier element which has a park position at one end of the guide structure and a rest position at the other end and a reversing structure is provided at the other end of the guide structure and a tension spring extending around the reversing structure is connected with one end to the carrier element and the opposite end to the housing for moving the carrier element to the end position, the tension spring comprises an area of high spring stiffness where it extends around the reversing structure and an area of low spring stiffness where the spring is connected to the housing away from the reversing structure.