|| List of recent Magnetic Field-related patents
| Method and device for locating a magnetic object|
A method for locating a moving magnetic object, comprising: determining the position or the orientation of the magnetic object from measurements of an array of n (an integer greater than 5) tri-axial magnetometers mechanically linked to one another with no degree, the method also comprises the reiteration of the following steps. Estimating the position of the magnetic object relative to the array of magnetometers from measurements of the magnetometers made in a preceding iteration or from a measurement of a sensor distinct from the magnetometers of the array of magnetometers so that this estimation is obtained before making a new measurement using the magnetometers of the array; computing the distance between each magnetometer and the estimated position of the magnetic object; eliminating the ni magnetometers closest to this estimated position, where ni is a positive integer number strictly less than n; making a new measurement, by each non-eliminated magnetometer, of the magnetic field generated or modified by the magnetic object; and determining a new position or a new orientation of the magnetic object from the new measurements of the magnetometers which have not been eliminated and without taking into account new measurements made by the eliminated magnetometers, so as to obtain a new location of the magnetic object..
Commissariat à I' énergie Atomique Et Aux énergies Alternatives
| Magnetic navigation system with soft magnetic core electromagnets for operation in the non-linear regime|
The present invention relates to a magnetic manipulation and navigation system for moving a magnetic element through a body comprising at least six electromagnets (24) with soft-magnetic cores arranged in a predetermined position to said body. It allows for the operation of one or more of the electromagnets in the non-linear regime of the magnetization curve of the cores.
| Activation device|
An activation device activates a capsule medical device that has a first coil inside and is activated when voltage not less than a first specified value or current not less than a second specified value is generated in the first coil. The activation device includes: a case; a second coil that is provided in the case and is configured to generate a magnetic field when current flows through the second coil; and a guide portion for guiding to a position that is located outside the case and that is a position of the capsule medical device where the capsule medical device can be activated based on the magnetic field generated by the second coil.
Olympus Medical Systems Corp.
| Wirelessly powered capsule endoscope|
The disclosure features wireless power transfer systems that include a wirelessly powered capsule endoscope comprising a camera, a light source, electronics, an antenna, a device resonator, and a capsule enclosure; and a power supply resonator; wherein the power supply resonator is configured and arranged to resonantly couple with the device resonator to provide power to the wirelessly powered capsule endoscope via an oscillating magnetic field.. .
| Method of sensing flip cover|
Provided is a method and devices for sensing a flip cover including determining an angle of the flip cover. A hall sensor may be included in a mobile terminal (or display terminal) and may include at least one hall element for collecting a magnetic field intensity generated from a magnet of the flip cover..
Magnachip Semiconductor, Ltd.
| Method for manipulating magnetic particles in a liquid medium|
A method of mixing magnetic particles (3) in a reaction chamber (2) that is part of a microfluidic device and that contains the said particles in suspension, comprises the steps: (a) providing an electromagnetic means (1,1′,6,7) to generate magnetic field sequences having polarity and intensity that vary in time and a magnetic field gradient that covers the whole space of the said reaction chamber (2); (b) applying a first magnetic field sequence to separate or confine the particles (3) so the particles occupy a sub-volume in the volume of the reaction chamber (2); (c) injecting a defined volume of the said reagent in the reaction chamber; and (d) applying a second magnetic field sequence to leads the particles (3) to be homogenously distributed and dynamically moving over a substantial portion of the whole reaction chamber volume.. .
| Ion source of an ion implanter|
An ion source uses at least one induction coil to generate ac magnetic field to couple rf/vhf power into a plasma within a vessel, where the excitation coil may be a single set of turns each turn having lobes or multiple separate sets of windings. The excitation coil is positioned outside and proximate that side of the vessel that is opposite to the extraction slit, and elongated parallel to the length dimension of the extraction slit.
Advanced Ion Beam Technology , Inc.
| Ion implanter, magnetic field measurement device, and ion implantation method|
An ion implanter includes an energy analyzer electromagnet provided between an ion source and a processing chamber. The energy analyzer electromagnet includes a hall probe configured to generate a measurement output in response to a deflecting magnetic field and an nmr probe configured to generate an nmr output.
| Sample analysis device and sample analysis method|
A problem of a sample analysis device that uses magnetic particles is the difficulty in uniformly capturing magnetic particles, specifically the poor uniformity in the vicinity of channel side walls. This causes poor analysis accuracy and reproducibility.
Hitachi High-technologies Corporation
| Dual coil loudspeaker system|
A dual coil loudspeaker system having a voice coil having a first coil configured to receive a first electrical signal from a first source, and a second coil configured to receive a second electrical signal from a second source different from the first source; a field magnet configured to generate a magnetic field that interacts with magnetic fields created by the first coil and the second coil; and a diaphragm connected to the voice coil such that the diaphragm is displaced in response to energization of at least one of the first coil and the second coil.. .
The Boeing Company
Memory circuit and dissipating external magnetic field
Memory circuit and method for at least partially dissipating an external magnetic field before the magnetic field affects operation of an array of addressable magnetic storage element stacks in the memory circuit. Multiple dummy magnetic storage element stacks are provided around the periphery of the array.
Fast switch fault current limiter
A fault current limiter circuit including a fast switch fault current limiter (fsfcl) and a voltage control reactor (vcr) operative to conduct load current during a steady state operation and limit load current when the load current exceeds fault current limits. The fsfcl may include a breaker having electrical contacts, a coil electrically coupled to the electrical breaker contacts, a plunger mechanically coupled to the electrical breaker contacts, a parallel voltage control (vcr), a transient overvoltage control circuit (tocc), wherein when current greater than a threshold level flows through the coil, a magnetic field having strength to move the plunger is generated, the movement of the plunger operates to open the contacts in the breaker and transfer fault current to vcr and tocc and limit the overall system fault current..
Varian Semiconductor Equipment Associates, Inc.
Image capturing device and inspection apparatus and inspection method
An image capturing device comprising, a light source configured to emit light having a predetermined wavelength, a polarization beamsplitter configured to receive the light from the light source, a faraday rotator configured to rotate a polarization plane of the light via the polarization beamsplitter by changing the intensity of the magnetic field, an objective lens configured to illuminate an inspection target with the light transmitted through the faraday rotator and a sensor configured to capture an optical image of the inspection target by causing the light reflected by the inspection target to be incident through the objective lens, the faraday rotator, and the polarization beamsplitter.. .
Nuflare Technology, Inc.
Locating device for evaluating the distance between an rfid label and an interface
A locating device for determining a distance of an rfid tag with respect to an interface between two media comprising an inductive coupling antenna and a sensor for determining a distance between the antenna and the interface. There is an energizing circuit configured to energize the antenna to generate an electromagnetic field with various successive amplitude values and a detection device for detecting an electromagnetic field response from the rfid tag.
Commissariat à L'énergie Atomique Et Aux énergies Alternatives
Electromagnetic shield for testing integrated circuits
A probe card includes a number probes. Each probe is adapted to contact a corresponding terminal of a circuit integrated in at least one die of a semiconductor material wafer during a test phase of the wafer.
Nuclear magnetic resonance logging tool having multiple pad-mounted atomic magnetometers
Various disclosed nuclear magnetic resonance (nmr) logging systems and methods employ a plurality of nmr sensors, including atomic magnetometers, mounted on pads. Certain method embodiments include: utilizing the earth magnetic field to pre-polarize the protons in a formation; utilizing a plurality of atomic magnetometers to obtain nmr measurements; and determining at least one characteristic relaxation time of the formation.
Halliburton Energy Services, Inc.
Apparatus and reset and stabilization control of a magnetic sensor
A magnitude and direction of at least one of a reset current and a second stabilization current (that produces a reset field and a second stabilization field, respectively) is determined that, when applied to an array of magnetic sense elements, minimizes the total required stabilization field and reset field during the operation of the magnetic sensor and the measurement of the external field. Therefore, the low field sensor operates optimally (with the highest sensitivity and the lowest power consumption) around the fixed external field operating point.
Everspin Technologies, Inc.
Method and device for measuring a magnetic field and the temperature of a magneto-resistive transducer
A method for measuring a first magnetic field and the temperature of a magneto-resistive transducer includes producing, by the magneto-resistive transducer, a measurement signal dependent on the intensity of the first magnetic field and on the temperature of the magneto-resistive transducer. The method includes establishing a measurement of the intensity of the first magnetic field on the basis of the measurement signal produced and a measurement of the temperature of the magneto-resistive transducer.
Acyclic exciter for an alternator
A self-excited alternator for generating electrical energy. The alternator includes a stator, a rotor, and an exciter.
Electric power transmission system
An electric power transmission system for curbing reduction in power transmission transmits energy via an electromagnetic field from a power transmission antenna to a power receiving antenna including: an inverter converting dc to ac voltage of a predetermined frequency to output; a power transmission-side control unit controls a drive frequency of the inverter and dc voltage input to the inverter; controlling a power value output from the inverter kept at constant level; the power transmission antenna to which ac voltage is input from the inverter; a rectifying unit rectifies output of the power receiving antenna obtaining dc voltage, and outputs dc voltage; a step-up and step-down unit steps up or down dc voltage output from the rectifying to output; a battery is charged with output of step-up and step-down unit; and a power receiving-side control unit controls the step-up and step-down unit to charge the battery with maximum power value.. .
Equos Research Co., Ltd.
Method and device for positioning a brushless electric drive
A method for positioning a brushless electric drive comprising a stator that has at least one phase winding to which a voltage signal can be applied, and a rotor equipped with magnetic poles. In the method, a voltage signal is applied to the at least one phase winding, the voltage signal generates a magnetic field as a result of the current flowing in the phase winding.
Brose Fahrzeugteile Gmbh & Wuerzburg
Homopolar permanent-magnet-biased action magnetic bearing with an integrated rotational speed sensor
Radial poles are placed around a radial actuator target mounted on a body. The poles are separated from a cylindrical surface of the target by radial gaps and adapted to communicate a magnetic flux with it.
Calnetix Technologies, Llc
Commutatorless and brushless dc machine with stationary armature and operating the same
The invention relates to commutatorless, brushless dc machine with stationary armature and method of operating the same. The armature system is so deployed within magnetic flux producing arrangement having closed path for flux through magnetic substance except air gaps, that the two coil sides of an armature coil are facing like poles of two different magnetic field systems 1 and 2.
Rotor for magnetic motor
Rotor formed by groups of materials (4) that orientate the magnetic field and magnets (2) in spiral lines, with the two magnetic poles of each magnet (2) facing the stator (3). Close to a magnetic pole of the end of the group, the material (4) that orientates the magnetic field protrudes towards the stator (3).
Circuitry for inductive power transfer
Circuitry for use in a primary unit of an inductive power transfer system to generate an electromagnetic field so as to transfer power wirelessly by electromagnetic induction to one or more secondary units of the system, the or each secondary unit being separable from the primary unit, the circuitry comprising: a plurality of drivable portions, each portion comprising a primary coil or a dummy coil; driving means operable to supply both or at least two of said portions with drive signals so as to cause those driven portions that have a said primary coil to generate said electromagnetic field; and control means operable, in dependence upon a feedback signal indicative of a characteristic of the primary or dummy coil of one or more of the driven portions, to control the circuitry so as to tend to regulate said feedback signal, wherein the circuitry is configured so that; those portions that are driven are connected together in parallel and have a tuned resonant response; and said control tends to regulate such a characteristic of each of said driven coils.. .
Access Business Group International Llc
Wireless power supply device
Wirelessly supplying power is rapidly changed by a switching circuit 11 selectively exciting a magnetic field coupling resonance circuit of l1 and c1 for wireless power supply by use of a resonant frequency of the resonance circuit and its ⅓-divided frequency. A large power is supplied in the case of excitation at the resonant frequency, and in the case of excitation at the ⅓-divided frequency, a small power is supplied.
Power supply device, power reception device, and power supply/reception device
A power supply unit is a power supply device that supplies power to a power reception device using electromagnetic induction. The power supply unit has a power supply coil in which planar coils that are formed by winding respective wire materials around the same point in the same plane are arranged from an inner side to an outer side in the radial direction.
Lequio Power Technology Corp.
An electric damper for damping the relative motion between a first and a second mass includes a generator that can be driven by the mass motion. In addition to field generating means in the generator, an additional field winding is provided for producing a secondary magnetic field, the additional field winding being arranged in such a way that the primary and secondary magnetic fields have oppositely oriented field lines..
Rotary linear generator (stroke-rotor generator)
The benefits are twofold; as driving engines may now utilised simple environmental friendly two stroke engines with rotating pistons, secondly conventional rotating generators may also be used for generating electrical energy. Even at a desired low sliding speed of the pistons the desired high speed between the two interacting magnetic fields can be high depending on the diameter of the rotating part of the generator.
Pneumatic fastener driver
The invention provides, in one aspect, a pneumatic fastener driver including a cylinder and a piston positioned within the cylinder. The piston is moveable between a top-dead-center position and a bottom-dead-center position.
Techtronic Power Tools Technology Limited
Method and system for magnetic particle assisted add-on module on inkjet printer to prevent ink from settling
An ink jet printing system comprises an ink reservoir, an ink passageway, an inkjet nozzle, and a plurality of magnetic elements that are located adjacent at least one of the ink reservoir and the ink passageway. The at least one of the ink reservoir and the ink passageway further includes having micro-magnetic particles located therein.
Micro-cathode thruster and a increasing thrust output for a micro-cathode thruster
A magnetically enhanced micro-cathode thruster assembly provides long-lasting thrust. The micro-cathode thruster assembly includes a tubular housing, a tubular cathode, an insulator, an anode and a magnetic field.
The George Washington University
Method of manufacturing a logging tool for a borehole
Methods of manufacturing a logging tool for a borehole are provided. In an embodiment of the present invention, shields are disposed to prevent or reduce circulating electrical currents from causing a voltage difference that would adversely affect the measured voltage difference between two adjacent electrodes.
Rem Scientific Enterprises, Inc.
Devices and methods to provide stimulation therapy in the presence of external conditions that induce undesirable perturbations
Devices and methods compensate for perturbations in a stimulation signal caused by external conditions such as a magnetic field of an mri machine so that stimulation therapy may continue in the presence of the external condition. Compensation for the perturbations during a stimulation pulse of a stimulation phase may be provided by using feedback within a stimulation current source.
Mr imaging using apt contrast enhancement and sampling at multple echo times
The invention relates to a method of cest or apt mr imaging of at least a portion of a body (10) placed in a main magnetic field b0 within the examination volume of a mr device. The method of the invention comprises the following steps: •a) subjecting the portion of the body (10) to a saturation rf pulse at a saturation frequency offset; •b) subjecting the portion of the body (10) to an imaging sequence comprising at least one excitation/refocusing rf pulse and switched magnetic field gradients, whereby mr signals are acquired from the portion of the body (10) as spin echo signals; •c) repeating steps a) and b) two or more times, wherein the saturation frequency offset and/or a echo time shift in the imaging sequence are varied, such that a different combination of saturation frequency offset and echo time shift is applied in two or more of the repetitions; •d) reconstructing a mr image and/or b0 field homogeneity corrected apt/cest images from the acquired mr signals.
Koninklijke Philips N.v.
Three-dimensional molding using magnetically activated static and dynamic ferrofluid configurations
The present invention provides a method to cure material (polymer, metals) into a mold against the shape of a fluid (aka the substrate). The substrate is a ferrofluid, and its shape can be dictated by surrounding magnetic fields.
Method and determining linear position using multiple magnetic field sensors
The linear position of an object is estimated using multiple magnetic field sensors and a magnet. The multiple magnetic field sensors are held in fixed relation to one another and in moving relation with respect to the magnet.
Allegro Microsystems, Llc
Alignment x-ray imaging system
A method for aligning a radiation source with a portable image receiver in a radiographic imaging system generates a magnetic field with a predetermined field pattern and with a time-varying vector direction at a predetermined frequency from an emitter apparatus that is coupled to the radiation source, wherein the generated magnetic field further comprises a synchronization signal. Sensed signals from the magnetic field are obtained from a sensing apparatus that is coupled to the image receiver, wherein the sensing apparatus comprises three or more sensor elements, wherein at least two of the sensor elements are arranged at different angles relative to each other and are disposed outside the imaging area of the image receiver.
Carestream Health, Inc.
Non-contact power supply transmitter system, receiving device, and analog circuit
A non-contact power supply transmitter system 100 transmitting an electric power from a transmitting device (tx) 200 to a receiving device (rx) 300 with a non-contact power supply transmitter method, the tx 200 including: a transmitting coil 202; a driver 204 causing the transmitting coil 202 to generate a power signal of the electromagnetic field; and an fsk modulation unit 240 transmitting an fsk signal sf through the transmitting coil 202, the rx 300 including: a receiving coil 302; an fsk demodulation unit 330 demodulating the fsk signal sf received through the receiving coil 302; and a controller 312 inputting the fsk signal demodulated by the fsk demodulation unit 330, the fsk demodulation unit 330 is composed of an analog circuit. The non-contact power supply transmitter system, the receiving device, and the analog circuit can realize a low power, space-saving fsk communication..
Rohm Co., Ltd.
Non-contact power supply transmitter system and receiving device
A non-contact power supply transmitter system 100 transmitting an electric power from a transmitting device (tx) 200 to a receiving device (rx) 300 with a non-contact power supply transmitter method, the tx 200 including: a transmitting coil 202; a driver 204 causing the transmitting coil to generate a power signal of the electromagnetic field; and an fsk modulation unit 240 transmitting an fsk signal sf through the transmitting coil, the rx 300 including: a receiving coil 302; a rectifier circuit 320 rectifying an electric current induced by the receiving coil; an fsk demodulation unit 340 demodulating the fsk signal received through the receiving coil; and a controller 312 controlling so that a rectifying mode of the rectifier circuit is switched to a diode rectifying mode during the fsk communication. The non-contact power supply transmitter system 100 and the rx 300 can execute a stable fsk communication..
Rohm Co., Ltd.
Reconfigurable resonant aerial with an impedance corrector
The invention relates to aerial technology and can be used as a compact reconfigurable aerial for long-wave, medium-wave and short-wave communications. An aerial with an impedance corrector, consisting of an inductance coils, comprises a flat or three-dimensional vibrator.
Eas tag utilizing magnetometer
An eas tag comprises a microprocessor, motion sensor, magnetometer, communication elements, and audible alarm generator. Various means of attaching the tag to an object to be protected can be used.
Field emission system
A magnetic system is provided that involves field emission structures having magnetic field sources, magnetically active intermediate layers, and magnetically inactive intermediate layers. The magnitudes, polarities, and positions of the magnetic field sources may be configured to have desirable correlation properties, which may be in accordance with a code.
Correlated Magnetics Research, Llc.
Use energy resource from gravity (magnetic force) of permanent magnet and apply the principle of “magnetic field, magnetic force of permanent magnet was holding (stopped), can not get out of the closed environment of a metal with very high magnetic permeability”, along with applying laws of physics and the physical-chemical properties different types of material in nature. Eternal engine invented in the form of a cylinder system, operated by the innovative method that closed-open automatically the fixed magnetic force of permanent magnets..
Device for measuring coating thickness
The invention relates to a device for measuring a thickness of a dielectric layer (8) on a base substrate (7), comprising a cylindrical resonant cavity (1) having a circular cylindrical wall (9) and a plane wall (10) on one end thereof, wherein the opposite end (3) is open to be placed upon the dielectric layer (8) on the substrate (7) to form a wall of the resonant cavity (1) on the opposite end (3); an antenna (4) located within said resonant cavity (1) and adapted to excite an electromagnetic field in the resonant cavity (1) that is approximately zero in the dielectric layer (8); a reflection meter (5) connected to said antenna (4) and adapted to measure the resonant frequency of the resonant cavity (1); and a processor (6) connected to said reflection meter (5) and adapted to determine the thickness of the dielectric layer (8) from the resonant frequency of the resonant cavity (1). The invention also relates to a method for measuring a thickness of a dielectric layer (8) on a base substrate (7) having a curved surface, the method comprising placing a thin conductive foil onto the curved surface to closely fit the curved surface, at least in an area to be measured; performing, using an aforementioned device, a first thickness measurement in the area to be measured to derive a thickness compensation data; removing the thin conductive foil; performing, using said device, a second measurement in the area to be measured to derive uncompensated thickness data; and applying said thickness compensation data to said uncompensated thickness data to derive the thickness of said dielectric layer (8)..
Towable transient electromagnetic survey device
A towable transient electromagnetic survey device for connection to a land, water based or an airborne towing vehicle is provided. The towable transient electromagnetic survey device includes a central body structure and a number of booms extending therefrom to interconnect the central body structure to the towing vehicle and suspend a transmitter loop for generating a primary electromagnetic field.
Groundwater Imaging Pty Ltd
Magnetic resonance imaging apparatus and manufacturing method thereof
The mri apparatus includes a main magnet forming a static magnetic field in a bore, and a gradient coil assembly which forms a magnetic field gradient in the static magnetic field and includes a plurality of shim trays arranged therein at a predefined interval and at least one first shim token provided between the shim trays.. .
Samsung Electronics Co., Ltd.
Gradient coil supporting implement and magnetic resonance imaging apparatus
In one embodiment, a gradient coil supporting implement includes three bearings and a mounting main body. At least one of the three bearings is a spherical bearing.
Toshiba Medical Systems Corporation
Magnetic resonance imaging apparatus and control device of a magnetic resonance imaging apparatus
A control device of a magnetic resonance (mri) imaging apparatus includes a condition setting unit and a judging unit. The condition setting unit sets an imaging sequence to be performed by the magnetic resonance imaging apparatus based on set conditions of the set imaging sequence.
Toshiba Medical Systems Corporation
Magnetic resonance imaging apparatus
A magnetic resonance imaging (mri) apparatus includes a housing which has a bore to which a magnetic field for use in an mri scan is applied, a moving table on which an inspection target may be placed and that enters the bore of the housing, a projector which projects an image onto an inner wall that forms the bore of the housing, and a controller which controls the projection unit and transmits a video signal to the projector.. .
Samsung Electronics Co., Ltd.
Simple microwave field imaging device
The invention relates to a device for sensing a microwave magnetic field polarization component (b−, bπ, b+,) of a microwave relative to a static magnetic field b0, comprising: a preparation means being designed to prepare an atomic vapor (10) comprising a plurality of thermal atoms in a first hyperfine state, particularly a dark state to applied laser light, which first hyperfine state is split from at least one other hyperfine state due to the zero-field hyperfine splitting and/or due to a static magnetic field (b0) generated by said preparation means, at least one cell (1) enclosing said plurality of thermal atoms (10), wherein said microwave is adapted to drive rabi oscillations of said plurality of thermal atoms between said first hyperfine state and a second hyperfine state, the rabi frequency of said rabi oscillations being proportional to said magnetic field polarization component (b−, bπ, b+) of said microwave, and an imaging means being designed to capture a state image of said plurality of atoms representing the spatial atomic density distribution (ne) being a function of the rabi frequency (Ωi(r)) of said rabi oscillations. Further, the invention relates to a method for sensing a microwave field..
Fluxgate magnetic sensor readout apparatus
Compact, low power fluxgate magnetic sensor readout circuits and apparatus are presented in which demodulator or rectifier circuit to modulates a sense signal from the fluxgate sense coil, and the demodulated signal is provided to an amplifier circuit with a transconductance or other amplifier and one or more feedback capacitors connected between the amplifier input and amplifier output to integrate the amplifier output current and provide a voltage output signal indicating the magnetic field sensed by the fluxgate sensor.. .
Texas Instruments Deutschland Gmbh
Device for the detection of the p, r, n, d, m+, m and m- positions of a control lever of a gearbox of an automotive vehicle
A device is mounted with a capability for angular movement in a mounting unit, the movement being detected by an element that is able to send electrical signals within a processing unit. The element consist of a single 2d hall-effect sensor able to measure the rotations of the magnetic field, the sensor being mounted in close proximity to a dual magnet to measure two rotations of the lever in two planes, each corresponding to the p, r, n, d and m+, m and m− positions..
Dura Automotive Systems Sas
Charging device for charging the energy store of a portable electric device
A charging device for charging the energy storage device of a portable electric device. The charging device has a load cell or load cells with a controllable resonant circuit for inductively transmitting energy, a parallel resonant circuit with two coils and a controllable supply voltage, two controllable switching elements for a self-oscillation of the parallel resonant circuit, which have control connections that can be connected to one another via a respective controllable switch-off element, and a demodulator connected to an output of the load cell being formed by a coil end that is not connected to the other coil end.
Conti Temic Microelectronic Gmbh
Wireless power transfer through conductive materials
An electrical component with conductive material(s) that is suitable for use within the electromagnetic field path of a wireless power transfer system. The electronic component includes conductive materials that are sufficiently thin to absorb no more than an acceptable amount of the electromagnetic field, yet thick enough to remain sufficiently conductive to perform the desired electrical function.
Access Business Group International Llc
Radially anisotropic ring r-tm-b magnet, its production method, die for producing it, and rotor for brushless motor
A method for producing a radially anisotropic ring magnet having at least one axial groove on the inner surface comprises using a die comprising a cylindrical, magnetic core, a magnetic sleeve having an axial ridge in alignment with the groove on the outer surface and disposed on an outer peripheral surface of the core, and an outer, cylindrical die member defining a cavity for forming the ring magnet with the magnetic sleeve, and compression-molding magnet powder charged into the cavity while applying a magnetic field in a radial direction, and a radially anisotropic ring magnet substantially having a composition of r-tm-b, wherein r is at least one of rare earth elements including y, tm is at least one of transition metals, and b is boron, having at least one axial groove on the inner surface, and magnetized such that centerlines between magnetic poles do not overlap grooves.. .
Hitachi Metals, Ltd.
Stator device for a linear motor, and linear transport system
A stator device for a linear motor comprises an electrically energizable magnetic field generator for forming a magnetic field, and a first holding device for holding the magnetic field generator, wherein the magnetic field generator is fastened to the first holding device, wherein the first holding device is formed at least partially from an any of an electrically and magnetically non-conductive material, wherein the magnetic field generator comprises a coil and a stator tooth as a core around which the coil is wound, and wherein the first holding device is in the form of a printed circuit board for electrical contacting of the magnetic field generator.. .
Beckhoff Automation Gmbh
Electric power transmission system
An electric power transmission system that properly recognizes, from a coupling coefficient, a positional change between a power transmission antenna and a power receiving antenna and can efficiently transmit electric power. The electric power transmission system includes: an inverter unit that converts dc voltage to ac voltage of predetermined frequency to output; power transmission antenna to which ac voltage is input from the inverter unit; power transmission control unit that controls a voltage value of dc voltage input to the inverter unit, and a frequency of ac voltage output by the inverter unit; and a power receiving antenna that faces the power transmission antenna and is for transmission of electric energy from the power transmission antenna via electromagnetic fields, and current flowing through the inverter unit, wherein, based on current flowing through the inverter unit, a coupling coefficient between the power transmission antenna and the power receiving antenna is calculated..
Equos Research Co., Ltd.
Embodiments of the present disclosure are directed to integrated circuit (ic) package assemblies with magnetic contacts, as well as corresponding fabrication methods and systems incorporating such magnetic contacts. A first ic substrate may have a first magnet coupled with a first electrical routing feature.
Electromagnetic field assisted self-assembly with formation of electrical contacts
A method and apparatus for self-assembling a part on a substrate are disclosed herein. In some embodiments, a method includes placing a substrate having a first binding site capable of generating a first magnetic field and having a first shaped surface with a first droplet conformably disposed thereon into a first fluid; placing a part having a second binding site capable of generating a second magnetic field and having a second shaped surface with a second droplet conformably disposed on the second shaped surface into the first fluid; and attracting the part towards the first binding site such that an equilibrium is formed between an attractive force and a repulsive force such that the part is free to rotate about the first binding site to minimize the repulsive force when the first and second shaped surfaces rotate into an alignment causing the part to aligned with the first binding site..
The United States Of America As Represented By The Secretary Of The Army
Soldering equipment for connecting solar cells
Soldering equipment for connecting solar cells includes an inductor loop for generating a high-frequently magnetic field for soldering conductors to the solar cells and holding-down devices, which devices penetrate the inductor loop, for pressing the conductor onto the conductor tracks of the solar cells. A field-concentrator element of a ferrite material is arranged in each holding-down pin of the holding-down device, whereby the magnetic field can be locally amplified and concentrated..
Komax Holding Ag
Polymeric composites having oriented nanomaterials and methods of making the same
The present invention relates to the development and fabrication of thin-film polymer nanocomposites containing vertically aligned nanomaterials, such as single-walled carbon nanotubes (swnts). In certain embodiments, the present invention utilizes liquid crystal mesophases of hexagonally packed cylindrical micelles that orient with their long axes parallel to an applied magnetic field, thereby directing the alignment of the nanomaterials, such as swnts, sequestered in the micellar cores.
Multi-stage locking system for selective release of a potential energy force to set a subterranean tool
An actuation tool uses a lock that when released allows a moving magnet to move into position to repel another magnet. Alternatively a magnetic field can be triggered in a stationary magnet such as one delivered on wireline, for example, to accomplish tool actuation.
Baker Hughes Incorporated
Steel sheet for rotor core for ipm motor, and manufacturing same
The present invention provides a steel sheet for a rotor core for an ipm motor, wherein the steel sheet has a magnetic flux density b8000 of 1.65 t or more as measured when magnetic field strength is 8000 a/m, and a residual magnetic flux density br of 0.5 t or more as measured at that time, and optionally, a coercivity hc of 100 a/m or more as measured after magnetization reaches 8000 a/m. By using the steel sheet of the present, invention for a rotor core of an ipm motor, it is possible to increase further an output torque in a high-speed rotational range and raise further the maximum, rotational speed..
Nisshin Steel Co., Ltd.
Method for manufacturing steel sheet for rotor core for ipm motor
The present invention manufactures a steel sheet for a rotor core for an ipm motor, wherein the steel sheet has a magnetic flux density b8000 of 1.65 t or more as measured when magnetic field strength is 8000 a/m, and a residual magnetic flux density br of 0.5 t or more as measured at that time, and optionally, a coercivity hc of 100 a/m or more as measured after magnetization reaches 8000 a/m. By using the steel sheet manufactured according to the present invention for a rotor core of an ipm motor, it is possible to increase further an output torque in a high-speed rotational range and raise further the maximum rotational speed..
Nisshin Steel Co., Ltd.
Monitoring of brake
The monitoring of a brake is disclosed. The brake includes first and second braking surfaces and a magnetizing device arranged to move the braking surfaces to an open state, in which the braking surfaces are separated from each other, and to a closed state, in which the braking surfaces are connected to each other.
Method for contactlessly measuring a relative position by means of a 3d hall sensor having measurement signal store
The present invention relates to a method for contactlessly measuring a relative position of a magnetic field source (102) which produces a magnetic field and a magnetic field sensor (100) in relation to each other. The present invention further also relates to a corresponding displacement sensor.
Tyco Electronics Amp Gmbh
Cochlear implant systems including magnetic flux redirection means
An exemplary cochlear implant system includes a component that houses a circuit board comprising electronic circuitry that generates one or more signals, an induction coil that transmits the one or more signals by generating a telemetry magnetic field, and a telemetry flux guide positioned between and in direct contact with a top surface of the induction coil and a bottom surface of the circuit board.. .
Advanced Bionics Ag
Method and system for in-vivo temperature measurement based on ac magnetization of magnetic nanoparticle
The invention discloses a method for in-vivo temperature measurement based on ac magnetization of magnetic nanoparticles, and relates to a nano test technology field. The invention positions magnetic nano agent at an area of a measured object, applies an ac excitation magnetic field to the area of the magnetic nano agent, collects an ac magnetization signal of the magnetic nano agent under the ac excitation magnetic field, detects amplitudes of odd harmonics of the ac magnetization signal, and finally calculates in-vivo temperature according to a relationship between the odd harmonics and the in-vivo temperature.
Huazhong University Of Science And Technology
Mr marker for magnetic resonance imaging
An mr marker for magnetic resonance imaging includes: (1) a closed volume containing a marker medium, (2) a first marker coil surrounding the volume for detecting an mr signal from the marker medium, (3) an rf shield which surrounds at least the volume and the first marker coil and screens against external rf fields, (4) a second marker coil, arranged outside the rf shield, for inductive and/or capacitive coupling to a magnetic field, and/or for emitting the mr signal detected by the first marker coil, (5) a first electrical interface for controllable electrical connection of the first marker coil to the magnetic resonance imaging scanner, (6) a second electrical interface for controllable coupling of the second marker coil and first marker coil, and (7) an electrical controller with which the first interface and/or the second interface may be controlled.. .
A positron emission tomography (pet)-magnetic resonance imaging (mri) apparatus according to an embodiment includes a gantry having a static magnetic field magnet, a gradient coil, and a radio frequency coil, a pet detector, and a moving mechanism. The static magnetic field magnet generates a static magnetic field in a bore having an approximately cylindrical shape.
Toshiba Medical Systems Corporation
Blood flow measurement system based on inductive sensing
An inductive sensing system is adapted for noninvasive measurement of blood flow through a blood vessel. A resonant sensor is disposed in proximity to the blood vessel, and includes a coil resonator that generates a magnetic field within a sensing area that includes the blood vessel.
Texas Instruments Incorporated
Planetary gear arrangement for a seat adjustment mechanism and operating such a planetary gear arrangement
A planetary gear arrangement for a seat adjustment mechanism, includes at least one inner, externally toothed fitting part and an outer, internally toothed fitting part, which fitting parts are pivotable in relation to each other about a pivot axis. An external toothing of the inner, externally toothed fitting part rolls along an internal toothing of the outer, internally toothed fitting part.
Johnson Controls Technology Company