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This page is updated frequently with new Magnetic Field-related patent applications. Subscribe to the Magnetic Field RSS feed to automatically get the update: related Magnetic RSS feeds. RSS updates for this page: Magnetic Field RSS RSS


Wireless power transmission for battery charging

Wireless power transmission for battery charging

Metal sensor

Metal sensor

Metal sensor

Magnetic field detection apparatus for a wireless power transfer system

Date/App# patent app List of recent Magnetic Field-related patents
11/20/14
20140343882
 Method and device for recognizing and removing undesired artifacts in multichannel magnetic field or electric potential measurements patent thumbnailnew patent Method and device for recognizing and removing undesired artifacts in multichannel magnetic field or electric potential measurements
The present invention introduces a method, device and a computer program for removing artifacts present in individual channels of a multichannel measurement device. At first, a basis is generated defining an n-dimensional subspace of the n-dimensional signal space, where n is smaller than n, where using in the definition of the n-dimensional basis a physical model of a signal space separation method, or a statistical model based on the statistics of recorded n-dimensional signals.
11/20/14
20140343846
 Systems, methods, and apparatus for providing indoor navigation using optical floor sensors patent thumbnailnew patent Systems, methods, and apparatus for providing indoor navigation using optical floor sensors
An apparatus includes (i) an absolute position sensor coupled to a case, the position sensor including a light sensor, and circuitry configured to determine an identifier within a barcode, the individual bars of the barcode being sensed by the light sensor, and (ii) a motion sensor coupled to the case, the motion sensor including a first magnetic field sensor, a code wheel having two or more magnets positioned to rotate in unison with a wheel of the moveable object, and encoder circuitry configured to determine an amount of rotation of the wheel of the moveable object based on an output of the first magnetic field sensor.. .
11/20/14
20140343735
 Drive control device and method for electronic expansion valve patent thumbnailnew patent Drive control device and method for electronic expansion valve
A drive control device and method for an electric expansion valve is disclosed. In the disclosure, before applying a drive pulse signal corresponding to a rotary pulse number to a motor of the electronic expansion valve, a secondary positioning is performed on a relative position between stator magnetic field of the motor and rotor magnetic field of the motor by applying a holding current of a first duration time to the motor, applying an pulse signal of an additional pulse number to the motor, and applying a holding current of a second duration time to the motor, and a same secondary positioning operation is also performed on the motor after applying the drive pulse signal corresponding to the rotary pulse number to the motor of the electronic expansion valve, which ensures that the electronic expansion valve operates according to the drive pulse signal corresponding to the rotary pulse number..
11/20/14
20140343703
 Detecting media watermarks in magnetic field data patent thumbnailnew patent Detecting media watermarks in magnetic field data
Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to detect media watermarks in magnetic field data are disclosed herein. Example methods disclosed herein to detect media watermarks can include accessing multidimensional magnetic field data representative of values of a magnetic field measured within a first distance of audio circuitry that is to output an audio signal corresponding to media presented by a media device.
11/20/14
20140343546
 Magnetically guided catheter patent thumbnailnew patent Magnetically guided catheter
A catheter includes a flexible tubing having a proximal end and a distal end. The catheter also includes an electrode assembly attached to the distal end of the flexible tubing and having a first magnet therein.
11/20/14
20140343488
 Nanotechnology and other small scale injectable machines with multistage external magnetic and electrostatic actuation patent thumbnailnew patent Nanotechnology and other small scale injectable machines with multistage external magnetic and electrostatic actuation
New nanotechnology and other small-scale devices for performing intravenous medical procedures are provided. In some aspect of the invention, a group of encapsulated injectable machines is delivered intravenously into a bloodstream via a syringe.
11/20/14
20140343397
 Biomagnetic resonance device and measuring method therefor patent thumbnailnew patent Biomagnetic resonance device and measuring method therefor
Provided are an ultra-low-field nuclear magnetic resonance device and an ultra-low-field nuclear magnetic resonance measuring method. The method includes applying a first measurement bias magnetic field corresponding to an excitation frequency of a coherent biomagnetic field generated in association with the electrophysiological activity of human body organs, applying a second measurement bias magnetic field having the same direction as the first measurement bias magnetic field and having a different magnitude than the first measurement bias magnetic field, and measuring a magnetic resonance signal generated in the human body by using magnetic field measuring means..
11/20/14
20140343396
 Use of machine learning for classification of magneto cardiograms patent thumbnailnew patent Use of machine learning for classification of magneto cardiograms
The use of machine learning for pattern recognition in magnetocardiography (mcg) that measures magnetic fields emitted by the electrophysiological activity of the heart is disclosed herein. Direct kernel methods are used to separate abnormal mcg heart patterns from normal ones.
11/20/14
20140343351
 Transcranial magnetic stimulation system patent thumbnailnew patent Transcranial magnetic stimulation system
A compact and economical transcranial magnetic stimulation system has a magnetic field generator for generating a magnetic field to be used for providing magnetic stimulation to the head of patient. The generator has a magnetic coil for generating a variable magnetic field and a holder for holding the magnetic coil.
11/20/14
20140343335
 System and method for reducing fouling rate in a hydrogenation reactor patent thumbnailnew patent System and method for reducing fouling rate in a hydrogenation reactor
Fouling rate inhibition for a hydrogenation reactor. A hydrocarbon hydrogenation method comprises passing a liquid feedstream through a magnetic field to separate magnetically susceptible particles, and introducing the magnetically lean stream into a fixed catalyst bed under hydrogenation conditions to saturate carbon-carbon double bonds in the hydrocarbon.
11/20/14
20140342671
new patent Method of controlling communication unit via magnetic sensor and electronic device using the method
A method of controlling a communication unit of an electronic device is provided. The method includes: obtaining magnetic field information via a magnetic sensor; comparing the obtained magnetic field information with reference magnetic field information; and switching the communication unit in an inactive state to an active state based on a result of the comparing, wherein the communication unit is capable of communicating with an external device in the active state..
11/20/14
20140342581
new patent Vertical mount pcb coaxial connector
A vertical mount pcb coax connector having a unique cavity design. The examples provide a vertical mounted connector with improved electrical performance to transmit a microwave signal to or from a coaxial port to planar printed circuitry.
11/20/14
20140342470
new patent Device and method for particle complex handling
An embodiment of the invention relates to a device for detecting an analyte in a sample. The device comprises a fluidic network and an integrated circuitry component.
11/20/14
20140342388
new patent Reagent for labeling primary amine groups in proteins
A reagent includes a magnetic nanoparticle, a cleavable linker, and a primary amine reactive group. A first end of the cleavable linker may conjugate to a surface of the magnetic nanoparticle.
11/20/14
20140342373
new patent Microfluidic system
The present invention concerns a microfluidic system comprising: a microchannel containing several elements of two non-miscible fluids, the microchannel comprising a droplet (30) containing magnetic particles (m), and a device for generating inside the microchannel magnetic field, said device comprising an activable magnetic element, the activable magnetic element comprising a tip (5,6), the microfluidic system being configured to transport the droplet by flow or by pressure difference.. .
11/20/14
20140342324
new patent Wireless real-time tongue tracking for speech impairment diagnosis, speech therapy with audiovisual biofeedback, and silent speech interfaces
A real-time wireless system for recording natural tongue movements in the 3d oral space. By attaching a small magnetic tracer to the tongue, either temporarily or semi-permanently, and placing an array of magnetic sensors around the mouth, the tracer can be localized with sub-millimeter precision.
11/20/14
20140340782
new patent Microwave-assisted magnetic head, head gimbal assembly, and magnetic recording and reproducing device
A microwave-assisted magnetic head provides a high-reliability microwave-assisted magnetic head that reduces effective coercivity by giving microwave energy to a magnetic recording medium in an auxiliary manner and writes a data signal, a head gimbal assembly, and a magnetic recording and reproducing apparatus. A microwave magnetic field generating element is arranged on a trailing shield side or a reproducing head element side with respect to a main magnetic pole that generates a recording magnetic field for writing a data signal into a magnetic recording medium, the microwave magnetic field generating element having a coil configuration in which a plurality of microwave magnetic field generating lines and a return line are formed by a continuous single line..
11/20/14
20140340781
new patent Microwave-assisted magnetic recording and reproducing device
A microwave-assisted magnetic recording and reproducing apparatus includes a microwave power generator, a microwave magnetic field generating element, and a thin film magnetic head that may record a data signal in high density in a magnetic recording medium that has a high coercivity. A magnetic recording medium, a magnetic head that records information in the magnetic recording medium, a microwave power generator provided independently of the magnetic head, and a differential signal supply unit used to supply microwave power generated by the microwave power generator as differential signals to a microwave magnetic field generating element provided at the magnetic head are included..
11/20/14
20140340372
new patent User interface devices
User interface devices (uids) for sensing position or motion of an actuator assembly in multiple degrees of freedom are disclosed. In one embodiment a uid includes a frame having a top and bottom assembly, an actuator assembly disposed within a volume between the top and bottom of the frame having magnets disposed therein, a sensor array for sensing magnetic fields from the magnets in multiple axes, and a processing element for receiving the sensed magnet fields and generating a uid output signal corresponding to a position, translation, rotation, deformation, or other action of the actuator assembly..
11/20/14
20140340185
new patent Rotary connection for electric power transmission
A rotor is rotatable on an axis within a stator. The rotor and stator each have facing coupled magnetic fields formed by electric coils positioned to produce axial force and radial magnetic filed.
11/20/14
20140340166
new patent Non-reciprocal circuit element
A non-reciprocal circuit element includes a ferrite, a first central electrode and a second central electrode that are arranged on the ferrite so as to cross each other in an insulated state, and a permanent magnet configured to apply a dc magnetic field to a portion where the first and second central electrodes cross each other. One end of the first central electrode defines an input port and the other end thereof defines an output port.
11/20/14
20140340099
new patent Metal detector for production and packaging lines
A metal detector (420) has a metallic enclosure (421) with entrance and exit apertures (430, 431) whose cross-sectional areas differ from each other. Inside the enclosure is a coil system with a transmitter coil (423) and first and second receiver coils (424, 425).
11/20/14
20140340089
new patent Magnetic sensing apparatus, systems, and methods
In some embodiments, an apparatus and a system, as well as a method and an article, may operate to acquire a first signal from a first magnetometer at least partially disposed within a helmholtz coil, to acquire a second signal from a second magnetometer having a sensitivity at least one thousand times less than the first magnetometer, to process the second signal to determine a n drive signal, to drive the helmholtz coil using the drive signal so as to null an ambient earth magnetic field surrounding the first magnetometer, and to process the first signal as one of a down hole location signal or a down hole telemetry signal, the location signal to determine a range to a sub-surface object, and the telemetry signal to provide data from down hole drilling operations. Additional apparatus, systems, and methods are disclosed..
11/20/14
20140340088
new patent Metal sensor
A metal sensor includes a primary coil arranged in a first plane, a first compensation coil arranged in a second plane, a second compensation coil arranged in a third plane, and a magnetic field sensor arranged in a fourth plane. The first plane, the second plane, the third plane and the fourth plane are oriented parallel to one another and perpendicular to a common z-direction in each case..
11/20/14
20140340085
new patent Time-resolved magnetic sensing with electronic spins in diamond
A system for performing walsh reconstruction of time dependent fields with a quantum probe that includes a diamond structure that includes nitrogen-vacancy (nv) centers for sensing magnetic and electric fields. An arbitrary waveform generator and microwave waveguides manipulate the quantum spins in the diamond structure using a plurality of coherent control sequences to measure the arbitrary profile of time-varying magnetic fields.
11/20/14
20140340081
new patent Magnetic sensor
A magnetic sensor includes a detection portion that includes first and second magnetic resistance elements. Each of the first and second magnetic resistance elements includes a pinned layer whose magnetic direction is fixed in a predetermined direction and a free layer whose magnetic direction changes in accordance with an external magnetic field.
11/20/14
20140340031
new patent Wireless power transmission for battery charging
A wireless power transmission system is provided for high power applications. The power transmission system is comprised generally of a charging unit configured to generate an alternating electromagnetic field and a receive unit configured to receive the alternating electromagnetic field from the charging unit.
11/20/14
20140340013
new patent Electric motor and electric generator
An electric motor with a stator having two coil sets arranged to produce a magnetic field of the motor, each coil set having a plurality of coil sub-sets; and two control devices, wherein the first control device is coupled to the plurality of coil sub-sets for the first coil set and the second control device is coupled to the plurality of coil sub-sets for the second coil set and each control device is arranged to control current in the respective plurality of coil sub-sets to generate a magnetic field in each coil sub-set to have a substantially different magnetic phase to the other one or more coil sub-sets in the respective coil set; and wherein the first control device and the second control device are mounted adjacent to the stator.. .
11/20/14
20140339967
new patent Magnetic power generator
A magnetic power generator (10) includes at least one rotor assembly (12) that is positionable at selected angles relative to the horizontal. The rotor assembly includes a plurality of spokes (20) emanating from a central rotational axis (26), with high-performance magnetic coils (22) mounted on the outer end portions of the spokes.
11/20/14
20140339928
new patent Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof
An energy converter system includes a rotor and a stator configured to be relatively stationary with respect to an environment. One of the rotor and the stator includes a field coil array and braking magnets, while the other of said rotor and said stator includes a permanent magnetic array that is configured to induce an electrical current in the field coil array in response to relative motion of the rotor and the stator.
11/20/14
20140339923
new patent Magnetic field detection apparatus for a wireless power transfer system
A wireless power receiver configured to control an electrical connection between a capture resonator of a wireless power transfer system and an electrical load, such as a battery pack or electric motor. The circuitry of the wireless power receiver is powered directly by the power output from the capture resonator, automatically powering up the wireless power receiver as soon as the capture resonator begins producing power.
11/20/14
20140339913
new patent Wireless power feeding system and wireless power feeding method
A wireless power feeding system capable of long distance and highly efficient space transmission of power is provided. A wireless power feeding system includes a power transmitter, a power receiver, and a power receiving body.
11/20/14
20140339912
new patent Feed unit and feed system
A feed unit includes: a power transmission section configured to perform power transmission with use of a magnetic field or an electronic field; a power limiting section provided on a power supply line from an external power source to the power transmission section; and an operation stop section configured to forcibly stop the power transmission. The operation stop section forcibly stops the power transmission when a voltage between an input and an output of the power limiting section exceeds a first threshold.
11/20/14
20140339908
new patent Detection apparatus, power supply system, and method of controlling detection apparatus
A detection apparatus includes: a measurement coil disposed in a vicinity of a power reception coil configured to receive power supplied through a magnetic field; a measurement section configured to measure a voltage of the measurement coil as a measurement coil voltage; and a foreign object detection section configured to obtain an electrical characteristic value of at least one of the power reception coil and the measurement coil on the basis of the measurement coil voltage, and to detect a foreign object in the magnetic field if the electrical characteristic value is lower than a predetermined lower limit threshold value.. .
11/20/14
20140339907
new patent Detecting device, power supply system, and detecting device control method
A detecting device includes: a measurement coil made up of a first partial coil to which current in a particular direction is induced by a magnetic field to be supplied to a power reception coil configured to receive power, a second partial coil to which the current in the particular direction is induced by the magnetic field, and a third partial coil, which is disposed between the first and second partial coils, to which current in the opposite direction of the particular direction is induced by the magnetic field; a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage.. .
11/20/14
20140339906
new patent Detecting device, power supply system, and detecting device control method
A detecting device includes: a measurement coil made up of a first partial coil to which current in a particular direction is induced by a magnetic field to be supplied to a power reception coil configured to receive power, and a second partial coil to which the current in the opposite direction of the particular direction is induced by the magnetic field; a measurement unit configured to measure the voltage of the measurement coil as measurement coil voltage; and a foreign object detecting unit configured to detect a foreign object within the magnetic field based on the measurement coil voltage.. .
11/20/14
20140339904
new patent Method and apparatus for transferring electromagnetic power
A method and apparatus for inductively obtaining alternating current from a first variable magnetic field with an input coil; forming with an output coil a second variable magnetic field using the alternating current; and conducting the alternating current from the input coil to the output coil.. .
11/20/14
20140339617
new patent Magnetic field effect transistor
A magnetic field effect transistor is presented. A magnetic field effect transistor comprises a current control part and a magnetic field applying part.
11/20/14
20140339435
new patent System for detecting and counting ions
A system for detecting and counting ions comprises a source of atoms, a hot filament ion source, means for generating an electric field and a magnetic field, and means for detecting and counting the ions, and the filament comprises a portion that is concave along its longitudinal and/or transverse axis.. .
11/20/14
20140339071
new patent Method and apparatus for heating during a liquid purification process using an electromagnetic heater
A liquid processing system is able to purify liquid such as water using an electromagnetic heater. The system, in one embodiment, includes a main boiler, a bottom boiler, a heating element, and a heating coil.
11/20/14
20140338924
new patent Downhole activation system using magnets and method thereof
A downhole activation system within a tubular. The system includes an axially movable member; a first magnetic field source having a first field with a first axial orientation movable with the member.
11/20/14
20140338793
new patent Tunable anisotropy of co-based nanocomposites for magnetic field sensing and inductor applications
A method includes producing an amorphous precursor to a nanocomposite, the amorphous precursor comprising a material that is substantially without crystals not exceeding 20% volume fraction; performing devitrification of the amorphous precursor, wherein the devitrification comprises a process of crystallization; forming, based on the devitrification, the nanocomposite with nano-crystals that contains an induced magnetic anisotropy; tuning, based on one or more of composition, temperature, configuration, and magnitude of stress applied during annealing and modification, the magnetic anisotropy of the nanocomposite; and adjusting, based on the tuned magnetic anisotropy, a magnetic permeability of the nanocomposite.. .
11/20/14
20140338365
new patent Magnetic structure and magnetic air-conditioning and heating device using same
A magnetic structure has a magnetocaloric material the temperature of which changes with application or removal of a magnetic field, and a high thermal conduction member which is in contact with the magnetocaloric material and has higher thermal conductivity than the magnetocaloric material. Further, this magnetic air-conditioning and heating device is provided with multiple of the aforementioned magnetic structures, a thermal switch which is arranged between magnetic structures and transmits or insulates heat, and a magnetic field varying unit which applies or removes a magnetic field to each of the magnetic structures.
11/20/14
20140338184
new patent Method and apparatus for injection molding rotor magnets
A method and assembly for forming a rotor include forming a rotor core having a plurality of voids and placing the formed rotor core into a die cavity. The method includes moving a plurality of support shoes to define an outer diameter of the die cavity, and injecting at least one of the plurality of voids with a magnetic slurry.
11/13/14
20140336968
Method and apparatus for calibrating a magnetic sensor
A magnetic sensor is calibrated by acquiring magnetic field measurements, fitting at least part of the plurality of magnetic field measurements to an ellipsoid model to obtain a coordinate of a center of the ellipsoid model, and determining a calibration offset according to the coordinate of the center of the ellipsoid model. The calibration offset is used to calibrate the magnetic sensor.
11/13/14
20140336937
Downhole mapping system
A downhole mapping system (100) for identifying completion components (33) having an inner surface (74) in a casing in a completion, comprising:—a magnetic sensor tool (1) having a longitudinal tool axis and comprising:—a detecting unit (2) comprising:—a first magnet (4) for generating a magnetic field, and—a first sensor (5) arranged in a first plane (7) and at a first distance (di) from the first magnet, for detecting changes in the magnetic field, the sensor (5) detecting changes in the magnitude and/or direction of the magnetic field producing measured data of a profile of the casing, wherein the downhole mapping system further comprises:—a reference database (34) comprising magnetic reference data of completion components, and—a processor (35) comparing a set of the measured data with reference data from the database (34) for identifying a substantially matching set of data representing a completion component stored in the reference database, wherein the system further comprises a component scanning unit (53) for scanning the inner surface for identifying a component and storing the data representing the component in the database.. .
11/13/14
20140336560
Externally programmable valve assembly
An externally programmable shunt valve assembly that includes a magnetic rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly in finite increments.. .
11/13/14
20140336470
Remote traction and guidance system for mini-invasive surgery
A cylindrically-shaped introduction guide (20) assembled with said detachable surgical endoclamp (10), said introduction guide (20) comprising a mechanism to detach said endoclamp (10); and at least one remote traction means (30) for said endoclamp (10), acting through the application of an electromagnetic field over the ferromagnetic portion of said endoclamp (10).. .
11/13/14
20140336443
Method of repairing age and disease immune dysfunction and cellular senescence with lymphoid stem cells and then re-applying those for therapeutic use
This invention relates to methods for treatment of diseases of ageing including immunosenescence, immune dysfunction, inflammation and impairment of early lymphoid lineage differentiation. The invention more specifically relates to the use of granulocyte colony stimulating factors to assist in stem cell mobilization, optionally in combination with the application of a method of delivering precise magnetic field patterns which agree with the body's own natural magnetic field patterns, and further in combination with re-infusion of previously collected autologous cells and/or plasma, optionally including allogeneic (healthy donor) cells and blood plasma..
11/13/14
20140334633
Sound generator for an anti-noise system for influencing exhaust noises and/or intake noises of a motor vehicle
A sound generator for influencing sound waves propagating in exhaust or intake systems of combustion engine driven vehicles includes: an enclosure having a port opening for communication with an exhaust and/or intake system; a loudspeaker basket supported by the enclosure; a membrane and a permanent magnet supported by the loudspeaker basket; and a voice coil supported by a voice coil carrier. The voice coil is disposed in a constant magnetic field created by the permanent magnet and is connected to the membrane.
11/13/14
20140334608
Medical treatment or examination device
A medical treatment or examination device includes at least one device component that may move relative to at least one other device component via a drive device. A measuring device is provided for detecting a load acting on the movable device component.
11/13/14
20140334279
Testing method of a magnetic head, and testing apparatus thereof
A testing method of a magnetic head includes: applying a first magnetic field with a constant intensity in a first direction that is the same with that of the longitudinal bias field to the magnetic head, simultaneously applying a second magnetic field with variant intensities in a second direction traversing the air bearing surface, and measuring a first noise; applying a third magnetic field with a constant intensity in a third direction that is opposite to the first direction to the magnetic head, simultaneously applying the second magnetic field with variant intensities in the second direction, and measuring a second noise; and analyzing noise change between the first noise and the second noise. The invention can screen out defective magnetic heads that possess poor noise characteristic and unstable performance..
11/13/14
20140333498
Multibeam source
The invention relates to a multibeam source for a multibeam antenna, the source comprising a plurality of identical basic sources, such that the basic sources are combined into identical subnetworks around a central basic source, each subnetwork forming a beam, and such that two adjacent subnetworks comprise at least one common basic source, wherein the source includes: a supply and polarization stage for supplying power to the central basic sources and polarizing the electromagnetic field at the accesses of the central basic sources; and a stage for distributing the power from the central basic sources among the basic sources of the corresponding subnetwork and those common to a plurality of subnetworks according to a predetermined amplitude law.. .
11/13/14
20140333456
Aircraft tire pressure loop link
The aircraft tire pressure loop link is formed of first and second single metal loops connected by parallel spaced apart metal shafts, and provides for coupling a magnetic field between a wheel hub coil and a tire pressure sensor coil to provide electromagnetic communication between a control unit connect to the wheel hub coil and a tire pressure sensor connected to the tire pressure sensor coil. The current induced in the first single metal loop travels the distance from the edge of the wheel axle coil to the periphery of the of the wheel rim to the second single metal loop, which generates the flux in the tire pressure sensor receiver coil necessary to power the tire pressure sensor..
11/13/14
20140333314
Current measuring circuit, battery and motor vehicle
A current measuring circuit for redundantly measuring electrical current includes a measuring resistor, a magnetic field sensor, and an evaluation circuit on an evaluation circuit board. The evaluation circuit is used to determine electrical current using the measuring resistor.
11/13/14
20140333310
Angular position sensor with magnetometer
An angular position sensor can include a magnetic device from which a magnetic field emanates, and multiple magnetometers, whereby each magnetometer senses a varying strength of the magnetic field due to relative rotation between components of a well tool. A method of determining an azimuthal position of a shaft which rotates relative to an outer housing can include securing a selected one of at least one magnetic device and at least one magnetometer to the shaft, securing the other of the magnetic device and the magnetometer to the outer housing, a fluid motor rotating the shaft relative to the outer housing in the well, and the magnetometer sensing a varying strength of a magnetic field emanating from the magnetic device as the shaft rotates relative to the housing..
11/13/14
20140333309
Electronic marker locator systems and methods
A locator for determining the depth of a buried electromagnetic marker includes a transmission antenna and two reception antennas. The locator has a major axis and is configured.
11/13/14
20140333306
Use of gradient coils for correcting higher order bo field inhomogeneities in mr imaging
The invention relates to a method of correcting higher order b0 magnetic field inhomogeneities in the examination volume of an mr device. According to the invention, currents through two or more coil sections (x1, x2) of at least one of a plurality of gradient coils (4) are independently controlled in such a manner that higher order field inhomogeneities of the main magnetic field b0 are compensated for by the magnetic field of the at least one gradient coil (4)..
11/13/14
20140333301
Device for current measurement
A device for current measurement comprises a substrate with a first current conductor and a current sensor with a second current conductor. The current sensor is mounted above the first current conductor on the substrate.
11/13/14
20140333300
Regulated magnetic flux density for extended current measurement
A current sensor senses a primary current in a conductor. The current sensor includes a core, a sensing device, and a magnetizing coil.
11/13/14
20140333299
Measuring system
A measuring system, having a magnetic device for generating a magnetic field and having a magnetic field sensor with a sensor surface for detecting a flux density of the magnetic field penetrating the sensor surface at least in a first spatial direction, whereby the magnetic field sensor is fixedly positioned relative to the magnetic device. The magnetic device can have at least one permanent magnet and a flux concentrator made of a ferromagnetic material.
11/13/14
20140333298
Measuring system
A measuring system having a magnetic device for generating a magnetic field and having a magnetic field sensor for detecting a flux density of the magnetic field at least in a first spatial direction, whereby the magnetic field sensor is fixedly positioned relative to the magnetic device. The magnetic device has at least two main poles for generating a main magnetic field and at least two secondary poles for generating a secondary magnetic field.
11/13/14
20140333295
Magnetic field sensor with immunity to external magnetic influences
A magnetic field sensor with enhanced immunity to external magnetic interference is presented. Included is a magnetic field signal generator and a demodulator.
11/13/14
20140333293
Current sensor
A current sensor includes: a magneto electric conversion element; and a magnetic field concentrating core applying a magnetic field caused by a measurement object current to the magneto electric conversion element. A planar shape of the magnetic field concentrating core perpendicular to a current flowing direction is a ring shape with a gap.
11/13/14
20140333260
Charging coil system for a drop-in target device such as a toothbrush
A system and method for charging at least one target device (29) having a secondary coil (27) positionable in a charging receptacle (25) having a primary coil (23) connected to a source of electrical power, wherein the secondary coil of the target device is out of precise alignment with the primary coil when the target device is positioned in the receptacle. A plurality of steering coils (22-22) are arranged around the primary coil.
11/13/14
20140333259
Electronic unit and power feeding system
An electronic unit includes: an electricity reception section configured to receive power transmitted using one of a magnetic field and an electric field; a secondary battery; a charging section configured to charge the secondary battery based on incoming power received by the electricity reception section; a load configured to perform predetermined operation based on supplied power; a first power supply path running from one of a side of the electricity reception section and a side of the secondary battery to a side of the load via the charging section; and a second power supply path running from the electricity reception section side to the load side around the charging section.. .
11/13/14
20140333257
Electronic apparatus and feed system
An electronic apparatus includes: a power reception section configured to receive power transmitted with use of a magnetic field or an electric field; a secondary battery; a charging section configured to perform charging to the secondary battery, based on received power received by the power reception section; a load configured to perform predetermined operation, based on supplied power; and a control section configured to forcibly set a power path on a preceding side of the load to a predetermined state when the load is activated in the charging to the secondary battery.. .
11/13/14
20140333174
Electrical rotating machine
An electrical rotating machine is provided with a salient-pole rotor, which is composed of magnetic field pole bodies integrally formed with a shaft and pole shoes constituting magnetic field pole heads. Each pole shoe is fixedly joined on the corresponding one of the magnetic field pole bodies with a plurality of bolts.
11/13/14
20140333166
Magnetic drive system and method
A magnetic coupling device for communicating continuous rotational or linear motion through a magnetic coupling of magnetic forces communicated from magnets operatively positioned on an oscillation assembly and a rotation assembly in positions sufficiently proximate to form the magnetic coupling. Employed to communicate an output force in a rotational direction from an input linear force communicated from a powered oscillation assembly, the magnetic force of the magnet communicating the force compresses the volume of ellipsoidal-like magnetic fields of the coupling alternately in unlike polar domains, to induce a smooth, blended polar continuity and communicate a continuous 360 degree rotational force to a rotation assembly operatively engaged with the magnetic coupling.
11/13/14
20140333164
Bearing
A bearing includes at least an inner ring (12), an outer ring (11), and rolling bodies arranged between the inner and outer rings, one of the rings being designed to turn and the fixed, and one of the rings (11) including an inducing element (30) is designed to generate an inducing electromagnetic field, the other of the rings (12) including an electrical circuit (25) in which an induced current is generated when one of the rings turns in relation to the other of the rings, and when the inducing element (30) generates an inducing electromagnetic field, wherein the inducing element designed to generate an inducing electromagnetic field includes a module having a piezoelectric effect and/or a module having a thermoelectric effect (35).. .
11/13/14
20140333156
Electric power generation device
An electric power generation device comprising: a support member; a first magnetostrictive member with one end attached to the support member; a second magnetostrictive member with one end attached to the support member and disposed in parallel with the first magnetostrictive member; a vibration linking member connecting the first and second magnetostrictive members to allow the first and second magnetostrictive members to vibrate coordinately; a coil wound around at least either the first magnetostrictive member or the second magnetostrictive member; and a magnetic path forming member containing magnet, connecting magnetically between one ends of the first and second magnetostrictive members and between the other ends thereof, applying magnetic fields of opposite directions mutually to the first and second magnetostrictive members, respectively, and forming magnetic path, the first and second magnetostrictive members acting mutually as magnetic return parts of the magnetic path.. .


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Magnetic Field topics: Magnetic Field, Transverse, Magnetic Separator, Homogeneous, Photovoltaic Cell, Semiconductor, Compliance, Anisotropy, Crystallin, Electrical Machine, Wireless Power, Transmitter, Radial Direction, Eddy Currents, Calibration

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