Follow us on Twitter
twitter icon@FreshPatents

Magnetic Field patents

Bulk PDF Downloads
      

This page is updated frequently with new Magnetic Field-related patent applications.




 Wireless charging system for hearing instruments patent thumbnailWireless charging system for hearing instruments
A facility is provided for the wireless resonant charging of rechargeable hearing instruments. The hearing instrument is freely positionable in a charging device for charging purposes.
Siemens Aktiengesellschaft


 Electric motor patent thumbnailElectric motor
An electric motor 1 includes: a shaft 3 formed of a magnetic member; a rotor 5 and a sensor target 21 that rotate integrally with the shaft 3; stators 7, 8 with an armature winding 6 and by its energization, generating a rotating magnetic field; a field magnet 9 sandwiched by the stators 7, 8 to magnetize the rotor 5; and a rotation sensor 20 placed in the side of the stators 7, 8 to determine a rotational position of the shaft 3. The rotation sensor 20 incorporates a sensor magnet that generates a magnetic field passing across a sensor target 21 and a sensor element that detects a magnetic flux of the sensor magnet that varies according to a rotational position of the sensor target 21, and is placed so that the magnetic flux direction of the sensor magnet is the same as that of the field magnet 9..
Mitsubishi Electric Corporation


 Integrated circuit having current-sensing coil patent thumbnailIntegrated circuit having current-sensing coil
An integrated circuit includes a substrate, a first conductive path over the substrate, a coil structure over the substrate, and a voltage sensing circuit electrically coupled with the coil structure. The first conductive path is configured to carry a first time-varying current and to generate a first time-varying magnetic field based on the first time-varying current.
Taiwan Semiconductor Manufacturing Company, Ltd.


 Magnetic sheet and wirelessly charged magnetic member including same patent thumbnailMagnetic sheet and wirelessly charged magnetic member including same
An embodiment of the present invention relates to a magnetic sheet having both an electromagnetic field shielding function and a heat dissipating function, and to a wirelessly charged magnetic member using same.. .
Lg Innoteck Co. Ltd.


 Magneto-dielectric polymer nanocomposites patent thumbnailMagneto-dielectric polymer nanocomposites
In accordance with the present invention, novel superparamagnetic magneto-dielectric polymer nanocomposites are synthesized using a novel process. The tunability of the dielectric/magnetic properties demonstrated by this novel highly-viscous solvent-free polymer nanocomposite that is amenable to building 3d electromagnetic structures/devices by using processes such as 3d printing, compression molding or injection molding, when an external dc magnetic field is applied, exceeds what has been previously reported for magneto-dielectric polymer nanocomposite materials..
University Of South Florida


 Wireless communication device and article including the same patent thumbnailWireless communication device and article including the same
A wireless communication device includes an antenna resonance circuit and a wireless ic element. The antenna resonance circuit includes a loop-shaped antenna that performs wireless communication by generating a magnetic field and series inductors connected in series to the loop-shaped antenna.
Murata Manufacturing Co., Ltd.


 Natural escapement patent thumbnailNatural escapement
An escapement mechanism including a stop member between a resonator and two escape wheel sets each subjected to a torque, and each including a magnetized or ferromagnetic track over a period. The stop member includes at least one magnetized or ferromagnetic pole shoe, transversely movable with respect to travel of a surface of the track.
The Switch Group Research And Development Ltd


 Methods and systems of vibrating a screen patent thumbnailMethods and systems of vibrating a screen
Screen vibration systems are provided that can vibrate theatre screens using acoustical, electromagnetic, or another type of energy while reducing the presence of image artifacts that may otherwise be visible as result of vibrating the screen. In one example of a screen vibration system, the system includes a screen, a permanent magnet mounted to the screen, and a magnetic source positioned with respect to the permanent magnet and uncoupled from the screen.
Imax Theatres International Limited


 Dual antenna for circular polarization patent thumbnailDual antenna for circular polarization
In an example embodiment, a nuclear magnetic resonance (nmr) logging tool comprises an arrangement of one or more magnets that generates a static magnetic field (b0) in a material body. A pair of first and second antenna coils is attached to the tool around an antenna core, wherein the turns of the first and second antenna coils are unaligned with either a longitudinal axis of the tool, or an orthogonal axis substantially transverse thereto.
Halliburton Energy Services, Inc.


 Magnetic resonance imaging apparatus patent thumbnailMagnetic resonance imaging apparatus
In order to obtain highly accurate images with a high snr without extending measurement time or increasing hardware costs and software processing costs, the present invention narrows a dynamic range (amplitude) of an nmr signal to be received by a reception coil (reception nmr signal) in an mri apparatus. In order to narrow the amplitude of the reception nmr signal, according to the position of an imaging region, a peak position of the reception nmr signal is shifted from the said position in the present embodiment.
Hitachi, Ltd.


Magnetic sensing and imaging using interactions between surface electron spins and solid state spins


Systems and methods for magnetic sensing and imaging include a sensor having a network of isolated electron-spin quantum bits (qubits) disposed on the surface of the sensor; and a solid state electronic spin system disposed below the surface of the sensor, wherein the solid state electronic spin system has a spin-state dependent fluorescence; a source of light; a source of first external perturbation, wherein the source of first external perturbation generates a magnetic field; a source of second external perturbation; wherein, the source of light and the first and second external perturbations are configured to coherently and independently manipulate the spin states of at least one qubit and at least one solid state electronic spin system; and a detector to optically measure the solid-state electronic spins spin-state dependent fluorescence.. .
President And Fellows Of Harvard College


Magnetic sensor


The present invention relates to a magnetic sensor which can detect a weak magenetic field and improve the detection precision with an easy and convenient configuration. A magnetic sensor is provided with a magnetic body changing the direction of a magnetic field input to a magnetoresistance effect element in the vicinity of the magnetoresistance effect element in which the resistance value changes according to the direction of the input magnetic field, the magnetic body has at leas one projection portion in the direction almost parallel to direction in which the magnetic induction occurs in the magnetoresistance effect element.
Tdk Corporation


Magnetic sensor


The present invention relates to a magnetic sensor which can improve the detection precision of a weak magnetic field and can be downsized. A magnetic sensor is provided with a magnetic body changing the direction of a magnetic field input to a magnetoresistance effect element in the vicinity of the magnetoresistance effect element in which the resistance value changes according to the direction of the input magnetic field, the magnetic body has a mean for changing the direction of a magnetic field on the surface at a side where the magnetoresistance effect element is formed.
Tdk Corporation


Magnetic sensor


The present invention relates to a magnetic sensor which can improve the detection precision of a weak magnetic field. A magnetic sensor wherein a magnetic body which changes the direction of a magnetic field input to a magnetoresistance effect element is provided in the vicinity of the magnetoresistance effect element in which the resistance value changes according to the direction of the input magnetic field, and the magnetic body has a recess with a concave shape on the surface at a side where the magnetoresistance effect element is formed.
Tdk Corporation


Electronic device equipped with a magnetic sensor, and magnetic sensor control same


An electronic device equipped with a magnetic sensor which detects a magnetic field around the electronic device, a connector connection section to connect to a magnetic connector including a magnet which is positioned on one end side of a connection cable, and a cpu, in which the cpu controls to stop a measuring operation in the magnetic sensor when judged that the connector connection section is connected to the magnetic connector.. .
Casio Computer Co., Ltd.


Device, arrangement, and measuring a current intensity in a primary conductor through which current flows


A device, an arrangement, and a method for measuring a current intensity in a primary conductor through which current flows are disclosed. In an embodiment, an apparatus includes a magnetic field-generating element configured to generate a reference magnetic field; and a magnetic field angle-sensitive element configured to measure an orientation of a total magnetic field, the total magnetic field is produced by overlapping of the primary magnetic field and the reference magnetic field in space, wherein the primary magnetic field and the reference magnetic field are not parallel to one another at a location of the magnetic field angle-sensitive element, and wherein the current intensity of the current flowing through the primary conductor is determinable from the orientation of the total magnetic field in space..
Epcos Ag


Electromagnet inspection apparatus with a movable magnet and non-destructive testing of electrically conductive test components


An inspection tool for the non-destructive testing of a test component made of an electrically conductive material is described. The inspection tool employs movably mounted permanent magnets, which provides a means for generating a variable dc magnetic field within the test component, and eddy current probes so as to provide a means for performing a partial saturation eddy current test upon the test component.
Innospection Group Limited


Label-free cellular manipulation and sorting via biocompatible ferrofluids


A device for separating a sample of cells suspended in a bio-compatible ferrofluid is described, the device includes a microfluidic channel having a sample inlet, at least one outlet and a length between the same inlet and the at least one outlet, wherein a sample can be added to the sample inlet and flow along the microfluidic channel length to the at least one outlet. The device includes a plurality of electrodes and a power source for applying a current to the plurality of electrodes to create a magnetic field pattern along the microfluidic channel length.
Yale University


Method for separating multiple biological materials


The present invention relates to a method for separating multiple biological materials using characteristics of magnetic nanoparticles. The method of the present invention is able to separate multiple biological materials at once due to differences in trajectory in an external magnetic field of the same intensity after attaching magnetic nanoparticles to the biological materials to be separated using differences in magnetic susceptibility or magnetization depending on compositions of the magnetic nanoparticles..
University-industry Foundation, Yonsei University


Order a batch download of a huge number of patent PDFs. Bulk PDF Downloads This is a premium service.

Soft-body deformation and force sensing


A robotic sensing and touch apparatus detects gradual deformations in a resilient surface, in contrast to conventional rigid member displacement. Hall effect sensors coupled to rare-earth magnets in a deformable base allow sensing of surface curvature and compression against grasped objects.
Worcester Polytechnic Institute


Sensor arrangement and magnetization device, and use of the sensor arrangement in a motor vehicle control device


A sensor arrangement for measuring a rotor position of an electric motor, in particular of a motor vehicle control device, wherein the sensor arrangement is constructed as a sensor arrangement operating without contact, which includes at least one permanent magnet and at least one magnetic field sensor, wherein the permanent magnet has at least one depression in at least one top surface facing the magnetic field sensor. A magnetization device for magnetizing a permanent magnet of the sensor arrangement is also disclosed.
Contiental Teves Ag & Co. Ohg


Sensor arrangement for position sensing


A method for determining of a position of an object using a sensor arrangement that includes a first magnetoresistive element and a second magnetoresistive element. A source provides a magnetic field with first and second magnetic poles.
International Business Machines Corporation


Surgical stapling instruments with linear position assembly


A surgical stapling instrument includes an elongate body, a cartridge assembly, an anvil assembly, and a linear position assembly including a pair of opposing magnets, and a plurality of sensors. The elongate body has a central shaft longitudinally translatable therethrough.
Covidien Lp


Sensor arrangement for position sensing


A sensor arrangement for position sensing comprises a first magnetoresistive element (1) and a second magnetoresistive element (2). A magnetic field source (3) provides a magnetic field with a first magnetic pole (n) and a second magnetic pole (s).
International Business Machines Corporation


Compact 3d direction finding and polarization resolving


There is provided an apparatus, including: an arrangement that includes at least one pair of oppositely directed, spaced apart, radiating-capable elements along a common axis, each of said elements being hollow with internal space, and being slotted throughout its entire extent; a first circuitry coupled to said arrangement and being configured to sense an electric field projection along said axis and to convey it to a first feeding terminal; and a second circuitry coupled to at least one slot of said arrangement configured to sense a magnetic field's projection along said axis and to convey it to a first feeding terminal. The apparatus being further configured to resolve a polarization vector of incoming wavefront propagating in an orthogonal direction to said common axis based on at least said sensed electric field projection and said magnetic field projection..
Elta Systems Ltd.


Method and apparatus of a versatile multiple-purpose stand


A method and apparatus of a versatile multiple-purpose stand with the configuration of a means for holding, a connection means, and a means for supporting, where the means for holding is connected to the means for supporting through the connection means which comprises various connecting mechanism including an one-hand operation mechanism with a means for control to adjust the height of the stand just by one hand, a flexible column connection mechanism having a flexible column as a connection means such that the height of the stand is adjusted by the degree that the flexible column is bent, or a connection mechanism provided by the attractive force generated by a magnetic field and the material generating attractive force in a magnetic field, such as a metal body, such that the means for holding can be connected to any area or space that includes the material generating attractive force and a magnetic field.. .

Powertrain rotational disconnect assembly


A disconnect assembly for translating torque to shafts of a driveline. A clutch is disposed in torque translating relationship between the shafts and is movable between an engaged configuration wherein torque is translated, and a disengaged configuration wherein torque is interrupted.
Borgwarner Inc.


Hall thruster with magnetic discharge chamber and conductive coating


Hall thrusters with conductive coatings are disclosed. A hall thruster comprises magnetic shielding in order to avoid collisions with the inner walls of its discharge chamber.
California Institute Of Technology


Actuation via magnetic torque driven deformation


A system may include an actuation member having a first end and a second end. A length of the actuation member is greater than a width of the actuation member.
Boise State University


Milling well casing using electromagnetic pulse


An electromagnetic perforation device for well casings includes a coil disposed around a core carried by a mandrel. The device further includes a power supply coupled to a current supply device, which is coupled to said coil.
Halliburton Energy Services, Inc.


Method and increasing porosity of metal bearing ore


A method for increasing the porosity of a metal bearing ore is provided, the method including exposing the metal bearing ore to an oscillating magnetic field, wherein the frequency of oscillation of the oscillating magnetic field is greater than about 0.1 mhz, and preferably about 0.1 mhz to about 1 mhz. The exposure rate of the metal bearing ore to the oscillating magnetic field is greater than about 0.1 t/kg/min.

Method and system for the enhanced recovery of oil, using water that has been depleted in ions using magnetic particles


A method of depleting an ion from a water source is provided. The method is applicable to water used in oil recovery, water used in natural gas recovery, the treatment of water wells, and for water used in hydraulic fluids for fracturing processes, such as water to be used in proppants or fracking fluids.
MÆrsk Olie Og Gas A/s


Programmable hair trimming system


A programmable hair trimming system is proposed having a hair trimming device (2) comprising a receiving element (1) for receiving an electromagnetic field and at least one source element (3) comprising an electromagnetic field source. The hair cutting length of the hair trimming device is adjustable, and the at least one source element (3) is external to the hair trimming device(2)and arranged to be placed in a fixed relationship to the head of a person.
Koninklijke Philips N.v.


Sorting particles using high gradient magnetic fields


This disclosure describes microfluidic devices that include one or more magnets, each magnet being operable to emit a magnetic field; and a magnetizable layer adjacent to the one or more magnets, in which the magnetizable layer is configured to induce a gradient in the magnetic field of at least one of the magnets. For example, the gradient can be at least 103 t/m at a position that is at least 20 μm away from a surface of the magnetizable layer.
The General Hospital Corporation


Magnetic-field driven colloidal microbots, methods for forming and using the same


The invention relates to a magnetic-field driven colloidal microbot that employs wall-based propulsion, method of forming the microbot and a method of using the microbot. The microbot can be formed in situ with the use of magnetic fields, and the magnetic fields can be used to translate the microbot to a specified location in a patient.

Cell, tissue and organ protection using a magnetic field


Methods and apparatus are provided for applying low magnetic fields (<400 g) to mammalian cells, tissues and organs for protection from the damaging effects of ionizing radiation and other oxygen dependent injuries that involve the radical pair mechanism. The magnetic fields are generated by fixed magnets or active magnets and used to enhance the survival of healthy cells during radiation treatment for cancer, to protect workers from radiation within nuclear power plants, to protect astronauts from radiation during long space voyages, to increase working time in exposed environments, to provide a safe room in hazardous locations, and to protect normal tissue during radiation treatment and in medical imaging modalities that use ionizing radiation (x-ray, ct, mammography).
The Trustees Of The University Of Pennsylvania


Multi-responsive targeting drug delivery systems for controlled-release pharmaceutical formulation


The present invention proposes the development of technology in the domain of targeted therapy and local drug delivery to the affected area of the tumor. The invention relates to surface modification nano-/micro-containers (spheres of organic and inorganic polymers), which are sensitive to acidic environment, elevated temperature (t˜41-43° c.), redox potential as well as the application of external applied magnetic field.

Electromagnetic actuating device including position-adjustable coil


An electromagnetic actuating device. A coil unit generates magnetic field toward a medical device inserted into a human body.
Industry Foundation Of Chonnam National University


Intraoral sensor position detection for full mouth image


Methods, systems, and devices for determining characteristics of an intraoral dental imaging sensor. A method includes providing an intraoral dental imaging sensor having a housing and a magnetic field sensor disposed in or on the housing, placing the intraoral dental imaging sensor in a holder, positioning the intraoral dental imaging sensor and at least part of the holder in a mouth of a patient, attaching a reference magnet to the patient, receiving, by an electronic processor, magnetic field data from the magnetic field sensor, determining, by the electronic processor, information including a position of the intraoral dental imaging sensor in the mouth of the patient based at least in part on the magnetic field data, and detecting x-rays by the intraoral dental imaging sensor to produce image data..
Dental Imaging Technologies Corporation


Order a batch download of a huge number of patent PDFs. Bulk PDF Downloads This is a premium service.

Electromagnetic tomography solutions for scanning head


An electromagnetic tomography system for gathering measurement data pertaining to a human head includes an image chamber unit, a control system, and a housing. The image chamber unit includes an antenna assembly defining a horizontally-oriented imaging chamber and including an array of antennas arranged around the imaging chamber.
Emtensor Gmbh


Parallel wire conductor for use with a heating blanket


A wire conductor for receiving alternating current and generating a magnetic field in response thereto. The wire conductor comprises a plurality of wire conductors in a parallel configured circuit extending between a first side of the wire conductor towards a second side of the wire conductor.
The Boeing Company


Vlc-based vector field fingerprint mapping


A method of determining data of a magnetic field fingerprint map includes: determining, at a server, a transformation of a mobile-device coordinate system of a mobile device to a reference coordinate system using roll information, pitch information, and yaw information of the mobile device relative to the reference coordinate system; obtaining, at the server, first indications of vector components of a magnetic field at a location of the mobile device, the first indications of vector components of the magnetic field being in the mobile-device coordinate system; and determining, at the server, second indications of vector components of the magnetic field using the first indications of vector components of the magnetic field and the transformation, the second indications of vector components of the magnetic field being indicative of vector components of the magnetic field at the location of the mobile device in the reference coordinate system.. .
Qualcomm Incorporated


Guided wave couplers and methods thereof


A dielectric waveguide coupling system for launching and extracting guided wave communication transmissions from a wire. At millimeter-wave frequencies, wherein the wavelength is small compared to the macroscopic size of the equipment, transmissions can propagate as guided waves guided by a strip of dielectric material.
At&t Intellectual Property I, Lp


Method and wireless power transmission utilizing two-dimensional or three-dimensional arrays of magneto-mechanical oscillators


An apparatus for transferring power wirelessly is provided. The apparatus comprises a plurality of magneto-mechanical oscillators.
Qualcomm Incorporated


Induced polarization bldc motor


The present invention relates to a bldc motor which maximizes efficiency by induced polarization and, more particularly, to an induced polarization bldc motor which subjects the magnetic field plane of a stator to induced polarization so as to double the magneto-motive force (active energy) thereof, and subjects the magnetic field plane of a rotor to magnetic flux concentration, so as to double the magnetic force (passive energy) thereof, thereby maximizing the torque and efficiency of a motor where two energies are synthesized. The stator comprises 2n winding slots and 2n induced polarization slits on a silicon steel sheet stacked core, and only n slots have distributed winding in independent and multiple phases.

Wireless charging receiver


A wireless charging receiver may include a main body, a connecter to electrically connect to batteries or other electronic devices, a receiving unit to pick and receive wireless power transmission, and a wireless charging module to convert the power into an electrical current. In one embodiment, a coil may be included in the receiving unit to realize the wireless charging.

Wireless charging transceiver device and wireless charging control method


A wireless charging transceiver device includes an energy storage module, a coil, a switch module, a rectifier circuit, and a resonant circuit. The coil is used to induce an external magnetic field or receive an external charging signal, and is used to transmit a wireless charging signal.
Wistron Corporation


Designs and arrangements of electrical power distribution units for attenuation of magnetic fields


Disclosed herein are electrical power distribution units designed to substantially reduce the magnetic fields emanating from the power distribution units by using two or more bus bar elements for each electric carrying element of the bus system, and positioning each bus bar element in parallel and adjacent at least one other bus bar element carrying a different electrical phase or current direction. Various arrangements of bus bar elements are also disclosed, as well as methods of modifying conventional power distribution units to provide such bus bar arrangements of the invention, that substantially reduce the magnetic fields emanating from the bus bar systems of the units..
Green Elmf Cables Ltd.


Holographic mode conversion for electromagnetic radiation


The present disclosure provides systems and methods associated with mode conversion for electromagnetic field modification. A mode converting structure (holographic metamaterial) is formed with a distribution of dielectric constants chosen to convert an input electromagnetic field pattern from a first mode to a second mode to attain a target electromagnetic field pattern (near or far) that is different from the input electromagnetic field pattern.
Elwha Llc


Energy storage assembly, use thereof, and energy storage cell assembly


An energy storage assembly includes the following: at least one electrochemical cell, wherein the at least one electrochemical cell comprises an anode that is liquid during operation, an electrolyte that is liquid during operation, and a cathode that is liquid during operation; and a magnetic field-generating structure disposed outside the at least one electrochemical cell for generating a magnetic field, wherein the magnetic field-generating structure is configured such that the generated magnetic field penetrates the at least one electrochemical cell.. .
Helmholtz-zentrum Dresden Rossendorf E. V.


Methods of manufacturing a magnetic field sensor


A semiconductor process integrates three bridge circuits, each include magnetoresistive sensors coupled as a wheatstone bridge on a single chip to sense a magnetic field in three orthogonal directions. The process includes various deposition and etch steps forming the magnetoresistive sensors and a plurality of flux guides on one of the three bridge circuits for transferring a “z” axis magnetic field onto sensors orientated in the xy plane..
Everspin Technologies, Inc.


Methods of manufacturing a magnetic field sensor


A semiconductor process integrates three bridge circuits, each include magnetoresistive sensors coupled as a wheatstone bridge on a single chip to sense a magnetic field in three orthogonal directions. The process includes various deposition and etch steps forming the magnetoresistive sensors and a plurality of flux guides on one of the three bridge circuits for transferring a “z” axis magnetic field onto sensors orientated in the xy plane..
Everspin Technologies, Inc.


Cathodic arc deposition apparatus and method


A cathodic arc coating apparatus includes a vessel, a cathode disposed in the vessel, and a stinger assembly. The stinger assembly includes a first magnetic field generator disposed in a first stinger cup in selective contact with the cathode.
United Technologies Corporation


High voltage compact fusible disconnect switch device with magnetic arc deflection assembly


A compact fusible disconnect switch device includes a magnetic arc deflection assembly including at least a pair of magnets disposed about a switch contact assembly. The magnetic arc deflection assembly facilitates reliable connection and disconnection of dc voltage circuitry well above 125 vdc with reduced arcing intensity and duration.
Cooper Technologies Company


Devices for manipulating magnetic particles, and methods of fabricating the devices and the use thereof


A device for manipulating magnetic particles, and the method of fabricating and use thereof. The device includes a substrate; a conductive element formed onto the substrate in a pattern shaped to enhance a magnetic field generated in response to an applied current; an insulating layer to isolate the conductive element from a magnetic element; and a magnetic element formed onto the insulating layer to enhance a magnetic force resulting from the magnetic field generated by the conductive element.
Mcmaster University


Systems and methods for controlling electric fields in a fluid, gases and bacteria


An electric and magnetic field inducing device is disclosed. The device comprises a malleable core with notches and electrically conductive windings wrapped around the flexible core around the notches.
Enhanced Life Water4 Solutions, Llc


Short-process preparing sintered ndfeb magnets with high magnetic properties recycling from ndfeb sludge


The present invention discloses a short process preparation technology of sintered ndfeb magnets from the ndfeb sludge, which relates to a field of recycle technology of ndfeb sludge. The present invention comprises the following steps: water bath distillation of organics in sludge, ultrasonic cleaning, calcium reduction and diffusion, ultrasonic rinsing in a magnetic field and drying, powders mixing and sintering.
Anhui Earth-panda Advance Magnetic Material Co., Ltd.


System and tracking medical articles


An automatic data collection system tracks medical articles by providing a robust electromagnetic (em) field within an enclosure in which the articles are stored. Respective data carriers, such as rfid tags, attached to each article respond to the electromagnetic field by transmitting data identified with each article.
Meps Real-time, Inc.


Systems and methods for augmented reality


Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. An augmented reality display system comprises a handheld component housing an electromagnetic field emitter, the electromagnetic field emitter emitting a known magnetic field, the head mounted component coupled to one or more electromagnetic sensors that detect the magnetic field emitted by the electromagnetic field emitter housed in the handheld component, wherein a head pose is known, and a controller communicatively coupled to the handheld component and the head mounted component, the controller receiving magnetic field data from the handheld component, and receiving sensor data from the head mounted component, wherein the controller determining a hand pose based at least in part on the received magnetic field data and the received sensor data..
Magic Leap, Inc.


Order a batch download of a huge number of patent PDFs. Bulk PDF Downloads This is a premium service.

Downhole closed-loop magnetostrictive sensing element for downhole applications


A downhole closed-loop magnetostrictive sensor includes a magnetic field generating member and a waveguide operatively connected to the magnetic field generating member. At least one of the waveguide and the magnetic field generating member is responsive to a parameter being sensed.
Baker Hughes Incorporated


Magnetic resonance imaging apparatus and coil device


In one embodiment, a magnetic resonance apparatus includes a gradient coil configured to be cylindrically-shaped and to apply a gradient magnetic field to a hollow region into which an object is inserted, the hollow region being formed, the hollow region being formed inside the gradient coil; and an rf coil configured to include a resonance circuit whose plural connecting conductors are folded back at one end side of the gradient coil so that the resonance circuit extends from the hollow region to an outer region of the gradient coil.. .
Toshiba Medical Systems Corporation


Method for evaluating atomic vacancy in surface layer of silicon wafer and evaluating the same


A method for evaluating atomic vacancies in a silicon wafer surface layer includes: element formation in which a pair of comb-shaped electrodes are formed on the same surface of a silicon sample over piezoelectric thin films; detection during which the sample is cooled and an ultrasonic pulse generated from one electrode while an external magnetic field is applied, the ultrasonic pulse being propagated through the sample surface and received by the other electrode, and a phase difference being detected between the ultrasonic pulse generated by the one electrode and the ultrasonic pulse received by the other electrode; and evaluation during which the sample surface elastic constant is determined on the basis of the phase difference, and the atomic vacancies in the sample surface are evaluated on the basis of changes in the elastic constant according to temperature or changes in the elastic constant according to the magnetic field intensity.. .
Niigata University


Magneto-inductive flow-measuring system


A magnetic-inductive flow-through measurement system, having a measuring tube for an electrically conductive medium, a magnetic field generating device for generating a magnetic field running at least perpendicular to the longitudinal axis of the measuring tube, at least two measuring electrodes which tap the measurement voltage induced in the electrically conductive medium, and an evaluation unit, wherein the measuring electrodes have measuring contact which are accessible externally on the measuring tube, and the measuring tube together with the measuring electrodes form a first functional unit, and counter-contacts corresponding to the measuring contacts, the magnetic field generating device and the evaluation unit form a second functional unit in a measurement system housing. The measuring electrodes and the corresponding counter-contacts corresponding are arranged in such a way, that the measuring contacts can be brought into electrically conductive contact with the counter-contacts by a movement running substantially perpendicular to the magnetic field direction..
Krohne Ag


Electromagnetic flowmeter


An electromagnetic flowmeter applies a magnetic field, which is generated by excitation current, to a fluid to be measured flowing in a measurement tube, and measures a flow rate of the fluid to be measured on the basis of a detection signal to be generated from an electrode provided in the measurement tube. The electromagnetic flowmeter includes an excitation circuit configured to generate the excitation current having a positive excitation period, a negative excitation period and a non-excitation period, and a diagnosis unit configured to detect an abnormality based on characteristics of the fluid to be measured, on the basis of a level of the detection signal in a non-excitation stable period, which is a period in which a differential noise of detection signal to be generated in the non-excitation period converges..
Yokogawa Electric Corporation


Off-axis magnetic field angle sensors


Embodiments relate to magnetic field angle sensing systems and methods. In an embodiment, a magnetic field angle sensing system configured to determine a rotational position of a magnetic field source around an axis, comprises n sensor devices arranged in a circle concentric to an axis, wherein n>1 and the sensor devices are spaced apart from one another by about (360/n) degrees along the circle, each sensor device comprising a magnetic field sensing device having a sensitivity plane comprising at least one reference direction of the magnetic field sensing device, wherein the magnetic field sensing device is sensitive to a magnetic field component in the sensitivity plane and configured to provide a signal related to a (co)sine of an angle between the reference direction and the magnetic field in the sensitivity plane; and circuitry coupled to the n sensor devices and configured to provide a signal indicative of a rotational position of a magnetic field source around the axis determined by combining the signals from the magnetic field sensing devices of the n sensor devices, wherein the circuitry is configured to (i) interpret the signal of the n sensor devices as angle values, (ii) add integer multiples equivalent to 360° to selective ones of the n angle values to result in at least one monotonously rising or falling sequence of all n corrected values in a single clockwise or counter-clockwise direction of angular positions of respective ones of the n sensor devices, and (iii) average these corrected values..
Infineon Technologies Ag


Assembly, blower and associated method


According to an embodiment of the invention, an electric machine is provided. The machine includes a support structure, a stator secured to the support structure, and a rotor rotatably secured to the support structure.
Regal Beloit America, Inc.


Well tools having magnetic shielding for magnetic sensor


A well tool can include a magnetic sensor having opposite sides, and a magnetic shield that conducts an undesired magnetic field from one side to the other side of the sensor. Another well tool can include a magnetic sensor in a housing, the sensor having opposite longitudinal sides relative to a housing longitudinal axis, and a magnetic shield interposed between the housing and each of the opposite longitudinal sides of the magnetic sensor.
Halliburton Energy Services, Inc.


Dredged soil transport system and its control method thereof


The present invention provides a dredged soil transport system including a pipe module wound with a coil applying an electromagnetic field to an internally flowing dredged soil and including a plurality of pipelines, a pump module configured to provide a transport pressure for transport of dredged soil to the pipe module, database stored with flow information on flow velocity and flow form in response to physical properties of liquefied unit, and a control module communicating with the pipe module, the pump module and the database wiredly and wirelessly and applying, to the coil, a current of waveform matching to a flow waveform of the dredged soil transported inside the pipeline, and a control method thereof.. .
Korea Institute Of Ocean Science & Technology


Low temperature stabilization process for production of carbon fiber having structural order


A method for producing a carbon fiber, the method comprising: (i) subjecting a continuous carbon fiber precursor having a polymeric matrix in which strength-enhancing particles are incorporated to a stabilization process during which the carbon fiber precursor is heated to within a temperature range ranging from the glass transition temperature to no less than 20° c. Below the glass transition temperature of the polymeric matrix, wherein the maximum temperature employed in the stabilization process is below 400° c., for a processing time within said temperature range of at least 1 hour in the presence of oxygen and in the presence of a magnetic field of at least 1 tesla, while said carbon fiber precursor is held under an applied axial tension; and (ii) subjecting the stabilized carbon fiber precursor, following step (i), to a carbonization process.
Ut-battelle, Llc


Side-stream particle precipitator apparatus and system for condenser open loop cooling system


A system for the breakdown and removal of bio-materials and suspended or dissolved solids in water cooling systems using a plurality of ionizer treatment units utilizing electric and magnetic fields and a mechanical filtering system to remove particulate materials housed in the water complex as suspended solids. The system also uses a high voltage electrode for charging the water complex to breakdown laminar flow at the conduit walls to mechanically dislodge any build-up of bio-materials or chemical compounds along the walls resulting in an increase in thermal conductivity and heat exchange efficiencies..

Method for manufacturing detecting sensor, detecting sensor, and transmission


A method for manufacturing a detecting sensor is disclosed. The method includes the steps of: positioning a magnet in a mold having a plurality of terminal receiving holes; positioning in the mold a plurality of magnetic field detecting sensor elements, each having a body and a terminal projecting from body; inserting the terminals into the terminal receiving holes; injecting molten resin into the mold; and curing the molten resin to form a housing having the magnet and the sensor elements embedded..
Honda Motor Co., Ltd.


Enclosure for heating three dimensional structure


An enclosure for heating a three dimensional structure. The enclosure comprising a body defining a cavity therein.
The Boeing Company


Magnetic phase-transformation material


A magnetic phase-transformation material with the formula nia−mmnb−ncom+ntic is provided, wherein a+b+c=100, 20<a≦90, 5≦b<50, 5≦c≦30, 0≦m≦a, 0≦n≦b, 0<m+n<a+b, and wherein, any one or combination of a, b, c, m, n represent an atomic percentage content. The magnetic phase-transformation material has properties of high toughness, high deformation rate, ferromagnetism and magnetic field-driven martensitic phase transformation, which can be widely used in various fields including high-strength and high-toughness actuators, temperature and/or magnetic sensitive elements, magnetic refrigeration devices and equipments, magnetic heat pump devices, magnetic memories, micro-electromechanical devices and systems, and thermomagnetic power generators or transducers..
Institute Of Physics, Chinese Academy Of Sciences


Systems and methods for providing alternating magnetic field therapy


Examples of systems and methods for providing alternating magnetic field therapy are provided. One example method includes the steps of positioning a target proximate to a first end of an alternating magnetic field (amf) head, the amf head comprising an electrical coil and a ferromagnetic core, the electrical coil having a substantially circular cross-section that is substantially centered on a first axis, the amf head having the first end corresponding to a first end of the coil and a second end corresponding to a second end of the coil; generating and transmitting an alternating current (ac) signal to the amf head; determining a temperature of the target based on a sensor signal from a temperature sensor; in response to determining the temperature, modifying the ac signal based on a difference between the temperature and a predetermined target temperature..
Kaio Therapy, Llc


Method and multimodal electrical modulation of pain


Apparatus and methods for managing pain uses separate varying electromagnetic fields, with a variety of temporal and amplitude characteristics, which are applied to a particular neural structure to modulate glial and neuronal interactions as a mechanism for relieving chronic pain. In another embodiment, a single composite modulation/stimulation signal which has rhythmically varying characteristics is used to achieve the same results as separate varying electromagnetic fields.

Tension loop for a spinal cord stimulator


An electrical stimulation device comprises a stimulation lead with a tension section to prevent induction of an electrical current when the electrical stimulation device is in the presence of a magnetic field generated by a device such as an mri machine. The tension section is shaped to organize excess length of the stimulation lead while providing a variable length between a distal end of the stimulation lead and an electrical source.

Signal and power communication system positioned on a rotatable shaft


A surgical instrument assembly can comprise a handle including an electric motor, a shaft assembly including a drive member, and a magnet configured to generate a magnetic field. The surgical instrument assembly further comprises, one, a rotatable output shaft operably coupled with the electric motor and the drive member and, two, a wire coil wound around the output shaft which is positioned in the magnetic field.
Ethicon Endo-surgery, Llc


Monitoring speed control and precision incrementing of motor for powered surgical instruments


Motor speed control systems are disclosed that include a motor having an output shaft, a motor speed control system, a sensor to detect the speed of the motor, and a controller to receive a signal from the sensor and to control the speed of the output shaft. A gear reduction assembly is operably coupled to the output shaft and a detectable element located in the gear reduction assembly.
Ethicon Endo-surgery, Llc


Electromagnetic tomography solutions for scanning head


An electromagnetic tomography system for gathering measurement data pertaining to a human head includes an image chamber unit, a control system, and a housing. The image chamber unit includes an antenna assembly defining a horizontally-oriented imaging chamber and including an array of antennas arranged around the imaging chamber.
Emtensor Gmbh


Magnetic induction heat engine and heat pipe delivery system and methods of producing and delivering heat


A magnetic induction thermal heat unit, capable of producing heat by magnetic field, inducing direct agitation and friction, at the molecular level within a ferrous magnetic or semi-magnetic substrate. The substrate is specifically designed to capitalize on storing the heat generated and then transferring the heat generated to a subsequent device that requires or uses heat as its primary energy source.
Inductive Engineering Technology, Llc


Circuitry useful for clock generation and distribution


An integrated circuit comprising an inductor arrangement, the arrangement comprising: four inductors adjacently located in a group and arranged to define two rows and two columns, wherein: the integrated circuit is configured to cause two of those inductors diagonally opposite from one another in the arrangement to produce an electromagnetic field having a first phase, and to cause the other two of those inductors to produce an electromagnetic field having a second phase, the first and second phases being substantially in antiphase.. .
Socionext Inc.


Electromagnetic angular acceleration propulsion system


The present invention discloses systems and methods for electromagnetic propulsion. The electromagnetic propulsion or thrusting systems include two or more electromagnetic coils, a means for rotating one of the electromagnetic coils, and a means for periodically shaping the intensity.

Mobile induction and power-generation device


A mobile induction and power-generation device includes an induction movement magnetic element, a displacement magnetic element, and an induction coil. The displacement magnetic element has at least one magnetic pole set each having two adjacent magnetic poles with opposite polarities, and the at least one magnetic pole set moves along a movement trajectory relative to the induction movement magnetic element.
Sunrising Eco-friendly Tech. Co., Ltd.


Electricity generation device using neodymium magnet having helical structure


The present invention provides an electricity generation device using a neodymium magnet having a helical structure that generates more electricity from the same torque during the same amount of time than common electricity generation devices using magnets, by helically arranging neodymium magnets, which has magnetic force significantly larger than common magnets, outside a unit coil, and that has improved performance of generating electricity by transmitting magnetic fields in vortexes to the unit coil. The electricity generation device using a neodymium magnet having a helical structure includes a first neodymium magnet, a second neodymium magnet, a third neodymium magnet, a first side magnet, a second magnet, a rod, and a unit coil.

Wireless power transmission device capable of forming magnetic field space, and magnetic field space formation method


A wireless power transmission device supplies power by means of a resonance phenomenon, from a power supply module equipped with at least a power-supply resonator to a power-receiving module equipped with at least a power-receiving resonator. For the power-supply resonator and the power-receiving resonator, a value for a transmission characteristic of a power source frequency for power is set so as to have two peak bands, and by setting the power source frequency for the power supplied to the power supply module to the power source frequency band corresponding to one of the two peak bands of the transmission characteristic, magnetic field spaces having a magnetic field strength less than the surrounding magnetic field strength are formed in the area near the power-supply resonator and the power-receiving resonator..
Nitto Denko Corporation


Electronic device for wirelessly charging


An electronic device comprises a substrate; a main coil mounted on the substrate; and at least one auxiliary coil disposed near the main coil and electromagnetically coupled to the main coil, wherein the main coil is configured to receive an electromagnetic field generated by the at least one auxiliary coil.. .
Samsung Electronics Co., Ltd.


Advanced convectively-cooled inductive charging


An information handling system (ihs) includes a base station that has a transmitter coil to generate a magnetic field for charging a portable power source of a battery-powered electronic device. A receiver coil magnetically receives power from the transmitter coil of the base station.
Dell Products, L.p.


Multi-turn coil on metal backplate


Disclosed is a wireless power transfer apparatus that includes a case for an electronic device. The case may have an electrically conductive panel portion and side portions defined along sides of the panel portion.
Qualcomm Incorporated


Electromagnetic field absorbing composition


An electromagnetic radiation absorbing composition is described, comprising a magnetic filler material taking the form of a metallic flake, and a non-conductive binder, wherein the magnetic filler is present in the range of from 1 to 5 volume % of dried volume. The use of a magnetic filler material according to embodiments of the invention is able to provide relatively narrow-band attenuation spectra with good repeatability.
Qinetiq Limited


Non-reciprocal circuit device and communication apparatus using the same


Disclosed herein is a non-reciprocal circuit device includes: a substrates including a magnetic plate having a circular surface and a dielectric ring having an annular surface, the circular surface and the annular surface being substantially coplanar; a center conductor disposed on the substrates; and a permanent magnet that applies a magnetic field to the center conductor. The center conductor includes: a main conductor portion positioned on a straight line extending from a center of the circular surface to an outer periphery of the annular surface; and a branched conductor portion extending in a radial direction of the substrate from the center of the circular surface.
Tdk Corporation


Non-reciprocal circuit device and communication apparatus using the same


Disclosed herein is a non-reciprocal circuit device includes: a first substrates including a magnetic plate having a circular surface and a dielectric ring having an annular surface, the circular surface and the annular surface being substantially coplanar; a second substrate; a center conductor provided between the first substrate and the second substrate; and a permanent magnet that applies a magnetic field to the center conductor. The center conductor includes: a main conductor portion positioned on a straight line extending from a center of the circular surface to an outer periphery of the annular surface; and a protrusion portion having a width smaller than a width of the main conductor portion, and wherein at least a part of the protruding portion is positioned on the annular surface..
Tdk Corporation


Systems and methods utilizing anisotropic conductive adhesives


Illustrative embodiments of systems and method utilizing anisotropic conductive adhesive(s) (“aca”) are disclosed. In at least one illustrative embodiment, a substrate may comprise one or more electrical contacts, and one or more integrated circuits may be secured to the substrate by aca.
Sunray Scientific, Llc


Circuit board design system, circuit board design method and program recording medium


Provided is a circuit board design system for designing a circuit board which is mounted with a semiconductor component and is with a cable connected to it. The circuit board design system comprises: an input means which inputs board design information on a circuit board; an emi characteristic derivation means which derives a characteristic of emi generated from the circuit board, on the basis of the board design information; a storage means which stores a cable length correction characteristic for deriving the emi characteristic; and an output means which outputs the emi characteristic derived by the emi characteristic derivation means.
Nec Corporation


Fixing apparatus and image forming apparatus


The disclosed fixing apparatus comprises: a magnetic field generation apparatus for generating a magnetic field; a fixing belt for emitting heat generated due to the magnetic field; and first and second thermally sensitive magnetic alloys arranged inside the fixing belt. A first curie point of the first thermally sensitive magnetic alloy and a second curie point of the second thermally sensitive magnetic alloy are different from each other..
Samsung Electronics Co., Ltd.


Micro-electromechanical system (mems) carrier


A micro-electromechanical system (mems) carrier formed by a typical surface micro-machining and bulk micro-machining process on a silicon substrate, having a frame, a movable carrier element, a conductive coil, two return springs and a pair of permanent magnets. The movable carrier element is formed within the frame and movable along a path, the conductive coil is formed on or embedded in the movable carrier element.
Globalmems Taiwan Corporation Limited


Pet-mri device and manufacturing method thereof


A pet-mri device and a manufacturing method thereof are disclosed. The pet device includes a magnetic resonance imaging (mri) machine comprising a solenoid coil and a magnetic-field correction coil, wherein the mri machine has a cylindrical structure or a dipole structure; and a positron emission tomography (pet) machine comprising a pet image sensor, wherein pet image sensor electrodes are formed on one and the other ends of the pet image sensor that have a doughnut shape, and the pet machine has a cylindrical structure or a lattice structure, wherein the pet machine is formed in the mri machine to allow a direction of an electric field of the pet machine to be parallel to a direction of a magnetic field of the mri machine..
Korea Atomic Energy Research Institute


Magnetic field sensor


Devices and methods are provided where switches associated with a magnetic field sensor are used to provide error information. In particular, a device is provided that includes a magnetic field sensor, a plurality of switches associated with the magnetic field sensor, and a control circuit configured to control the plurality of switches and to provide at least one signal indicative of a fault based on operation of the switches..
Infineon Technologies Ag


System for magnetic field distortion compensation and making same


A system and method for magnetic field distortion compensation includes a cryostat for a magnetic resonance imaging (mri) system. The cryostat includes a vacuum casing having a vacuum therein.
General Electric Company


Mr imaging with temperature mapping


The invention relates to a method of mr imaging of an object (10) placed in the examination volume of a mr device (1). It is the object of the invention to provide an improved mr-based temperature mapping method.
Koninklijke Philips N.v.


Order a batch download of a huge number of patent PDFs. Bulk PDF Downloads This is a premium service.

Method for measuring three-dimensional magnetic fields


Method for sensing an external magnetic field using a magnetic sensor cell including: a magnetic tunnel junction including a reference layer having a reference magnetization oriented parallel to the plane of the reference layer, a sense layer having a sense magnetization, and a tunnel barrier layer between the sense and reference layers. A field line is configured for passing a field current for providing a sense magnetic field adapted for aligning the sense magnetization.
Crocus Technology Sa


Magnetic field sensor with improved accuracy and obtaining improved accuracy with a magnetic field sensor


A magnetic field sensor includes a circular vertical hall (cvh) sensing element comprising a plurality of vertical hall elements, each one of the plurality of vertical hall elements comprising respective first and second current receiving contacts. The magnetic field sensor additionally includes a sequence switches circuit coupled to the plurality of vertical hall elements.
Allegro Microsystems, Llc


Hall sensor readout system with offset determination using the hall element itself


A method for providing offset compensation in a hall sensor comprising at least one hall element having a plate-shaped sensor element made of a doped semiconductor material, comprises using measurements on the hall element itself. The method comprises obtaining a first readout signal (vh) from the at least one hall element which is substantially dependent on the magnetic field, obtaining a second readout signal (vp) from the at least one hall element which is substantially independent of the magnetic field, and using the second readout signal (vp) for obtaining a prediction ({circumflex over (v)}o) of the offset (vo) on the first readout signal (vh)..
Melexis Technologies Nv


Flexible magnetic field coil for measuring ionic quantity


A flexible magnetic coil for determining ion migration rates inside a vacuum device can include a plurality of insulated copper wires held together as a bundle. A positive pole can be connected to a first end of the bundle for receiving a positive dc voltage.

Noninvasive measuring rapid temperature variation under dc excitation magnetic field


Provided is a noninvasive measuring method for rapid temperature variation under a dc excitation magnetic field, comprising: (1) positioning ferromagnetic particles at a measured object; (2) applying a dc magnetic field to area of the ferromagnetic particles enabling the ferromagnetic particles to reach saturation magnetization state; (3) obtaining steady temperature t1 of the measured object at room temperature, and calculating initial spontaneous magnetization m1, of the ferromagnetic particles according to the steady temperature t1; (4) detecting amplitude a of a magnetization variation signal of the ferromagnetic particles after temperature of the measured object varies, and calculating temperature t2 after change according to the amplitude a of the magnetization variation signal; and (5) calculating temperature variation Δt=t2-t1 according to the temperature t2 after change and the steady temperature t1. The present invention can realize noninvasive temperature measurement with high speed and high accuracy so as to resolve technical problems of low speed and low precision..
Huazhong University Of Science And Technology


Vector sensor for measuring particle movement in a medium


The present invention relates to a vector sensor for measuring particle movement in a medium. The vector sensor comprises a magnetic body that is held at a certain distance from a magnetometer in such a way that the magnetic body can move in time with a passing particle movement, wherein the magnetometer is arranged to detect the oscillations in the magnetic field that the movements in the medium produce..
TotalfÖrsvarets Forskningsinstitut


Tracking positions of personnel, vehicles, and inanimate objects


A device rotates at least one static magnetic field about an axis, producing a rotating magnetic dipole field, and is movable in relation to the surface of the ground. The field is periodically sensed using a receiver to produce a receiver output responsive to the field.
Merlin Technology, Inc.


Axial compressor with a magnetic stepper or servo motor


An axial compressor (30) is disposed upstream from a compressor wheel (16), and may be mounted in the inlet pipe (32) of a compressor housing (26) of a turbocharger (10). The axial compressor (30) can increase the pressure ratio approximately 1.3.
Borgwarner Inc.


Electric power generation system


An electric power generation system includes a wind turbine, a conductor rotating as the wind turbine rotates, a heat transfer medium vessel, a magnetic field generator, a heat accumulator, and an electric power generation unit. The magnetic field generator is operated to generate a magnetic field and therein the conductor is rotated and thus heated through induction, and the conductor's heat is transmitted to the water in the heat transfer medium vessel to generate steam which is in turn supplied to a steam turbine and thus drives an electric power generator to generate electric power..
Sumitomo Electric Industries, Ltd.


Linear faraday induction generator for the generation of electrical power from ocean wave kinetic energy and arrangements thereof


A buoy includes a flotation device configured to float at surface of a body of water. A vibrational linear electric generator (vleg) is configured to generate power from vibrational oscillations caused by waves using compressed repulsive magnetic fields focused by end magnetic field deflecting magnets.



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


  • Follow us on Twitter
    twitter icon@FreshPatents

    ###

    This listing is a sample listing of patent applications related to Magnetic Field for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Magnetic Field with additional patents listed. Browse our RSS directory or Search for other possible listings.


    4.0395

    5457

    2 - 1 - 109