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Magnetic Field patents



      
           
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


Two-wire probe with communication capability

Led candle lamp with flame lighting effects

Apparatus and method for in-field magnetic measurements

Date/App# patent app List of recent Magnetic Field-related patents
08/28/14
20140244200
 Magnetometer calibration patent thumbnailnew patent Magnetometer calibration
A real-time calibration system and method for a mobile device having an onboard magnetometer uses an estimator to estimate magnetometer calibration parameters and a magnetic field external to the mobile device (e.g., the earth magnetic field). The calibration parameters can be used to calibrate uncalibrated magnetometer readings output from the onboard magnetometer.
08/28/14
20140244097
 Sensor system and method for use with an automated guided vehicle (agv) patent thumbnailnew patent Sensor system and method for use with an automated guided vehicle (agv)
A sensor system for use with an automated guided vehicle (agv) includes a plurality of sensor units electronically coupled to a sensor control module via parallel communications. Each sensor unit may include a sensor array having a plurality of sensor elements, a conditioning circuit having one or more filter/amplifiers, and a conversion circuit.
08/28/14
20140243750
 System for determining position of element patent thumbnailnew patent System for determining position of element
System comprising a sensor assembly (3, 4, 5, 6) adapted to measure a magnetic field, and a moveable element (1) adapted to be moved relative to the sensor assembly between two positions by a combined axial and rotational movement, the rotational movement having a pre-determined relationship to the axial movement. A magnet (3) is mounted to the moveable element and configured to generate a spatial magnetic field which relative to the sensor assembly varies corresponding to both the axial and rotational movement of the magnet and thus the moveable element.
08/28/14
20140243733
 System for defining energy field characteristics to illuminate nano-particles used to treat invasive agents patent thumbnailnew patent System for defining energy field characteristics to illuminate nano-particles used to treat invasive agents
The invasive agent treatment system incorporates the pairing of energy fields with nano-particles to cause a thermal effect in the nano-particles, which thermal effect is transmitted into the biological cells of the invasive agent. The energy fields are derived from at least one or a combination of the following: an electric field, a magnetic field, an electromagnetic field (em), an acoustic field, and an optical field.
08/28/14
20140243583
 Method for preventing the onset and progression of myopia patent thumbnailnew patent Method for preventing the onset and progression of myopia
The present invention relates to ophthalmology, and is designated to prevent onset and progression of myopia. The treatment course, comprising eye exposure with magnetic field, transscleral low-energy laser radiation with wavelength of 1.3 microns, and additional optical—reflectory eye trainings, is conducted.
08/28/14
20140243442
 Moulding of plastic particulate matter patent thumbnailnew patent Moulding of plastic particulate matter
A method of manufacturing a moulded article from expanded resin particles, the method comprising: placing the particles and a dielectric heat transfer fluid in a mould located between a pair of electrodes; generating a radio-frequency electromagnetic field between the electrodes; applying the electromagnetic field to the mould to dielectrically heat the heat transfer fluid and hence the particles; and heating the particles to a temperature sufficient to cause their surfaces to soften, so that the particles fuse, thereby to form the moulded article as shaped by the mould; preferably, wherein the radio-frequency electromagnetic field has a wavelength greater than an average dimension (or dimensions) of the moulded article.. .
08/28/14
20140242663
 Magnetic separation of algae patent thumbnailnew patent Magnetic separation of algae
Described herein are methods and systems for harvesting, collecting, separating and/or dewatering algae using iron based salts combined with a magnetic field gradient to separate algae from an aqueous solution.. .
08/28/14
20140242603
 Methods and apparatus for target cell magnetic enrichment, isolation and biological analysis patent thumbnailnew patent Methods and apparatus for target cell magnetic enrichment, isolation and biological analysis
Disclosed here are methods and apparatus for target cell magnetic enrichment, isolation, and biological analysis. The target cells are labeled with magnetic nano-particles in a separate tube, container or in a device with soft magnetic collectors but not activated during the labeling period.
08/28/14
20140242568
 Apparatus for reproducing and erasing magnetic visual information patent thumbnailnew patent Apparatus for reproducing and erasing magnetic visual information
The invention relates to an apparatus for temporarily displaying visual information, comprising a frame, a plate of material included in the frame that changes colour due to local pressure and when exposed to a magnetic field, assumes its original colour, a magnet movable along the plate, guide means for guiding the magnet along the sheet in a fast position, wherein the magnet is arranged for erasing a part of the plate by its magnetic field during the movement along the plate, whereby the guide means arc arranged for guiding the magnet along a path in a second position different from the first position, whereby the magnetic field generated by the magnet does not erase the first part of the plate and the device comprises operation means for operating between the first and second position of the magnet.. .
08/28/14
20140242140
 Fabrication method for stratified and layered tissue to repair osteochondral defects patent thumbnailnew patent Fabrication method for stratified and layered tissue to repair osteochondral defects
Fabrication method for stratified and layered tissue to repair osteochondral defects. In a method of the present disclosure, the method comprises the step of applying a first direction magnetic field to a first quantity of a first collagen solution to align collagen within the first collagen solution in a first direction relative to the first direction magnetic field, forming a first layer of collagen.
08/28/14
20140241904
new patent Startup sequence for centrifugal pump with levitated impeller
A centrifugal pump system having an impeller rotating with first and second magnetic structures on opposite surfaces. A levitation magnetic structure is disposed at a first end of a pump housing having a levitating magnetic field for axially attracting the first magnetic structure.
08/28/14
20140241557
new patent Wireless 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.
08/28/14
20140241004
new patent Led candle lamp with flame lighting effects
A led candle lamp by controlling the coil to generate a magnetic attractive force to attract the magnet set, the translucent flame-shaped blade is vibrated when the emitted light of the led lamp is guided by the light guide tube toward the blame-shaped blade body of the translucent flame-shaped blade, causing flame lighting effects. Subject to the arrangement that two magnets of a magnet set are bonded together by an adhesive with the same magnet poles thereof abutted against each other, magnetic field lines can be compressed into a dish, enhancing the effects of magnetic attraction and oscillation of a translucent flame-shaped blade..
08/28/14
20140240277
new patent Three-dimensional (3d) display device for providing input-output interface using dynamic magnetic field control and method thereof
A three-dimensional (3d) display device for providing an input-output interface using a dynamic magnetic field control is disclosed, the device including a display unit to display a 3d image, a magnetic field generation unit to generate a magnetic field, and a control unit to dynamically control the magnetic field generation unit to generate a 3d magnetic field associated with the 3d image.. .
08/28/14
20140240074
new patent Systems and methods for making radially anisotropic thin-film magnetic torroidal cores, and radially anisotropic cores having radial anisotropy, and inductors having radially anisotropic cores
A radially anisotropic toroidal magnetic core is fabricated by a method including providing apparatus having a first magnet for providing a radial magnetic field extending across a cavity from an axial spindle to a surrounding second magnetic element, placing a substrate in the cavity, the substrate having a hole fitting around the head of the spindle; and sputter-depositing a film of ferromagnetic material onto the substrate. An alternative fabrication uses a similar fixture to impose magnetic anisotropy by annealing a previously-formed toroidal core.
08/28/14
20140239956
new patent System and method for detecting a fracture in a rock formation using an electromagnetic source
A surface electromagnetic survey system and method for detecting a fracture or fracture zone in a rock formation are provided. The system includes an electromagnetic source configured to generate an electromagnetic field in the vicinity of or at a surface of the rock formation.
08/28/14
20140239954
new patent Method and system for generating magnetic field gradients for an nmr imaging machine
Disclosed is a gradient generator system arranged around a volume of interest of axis oz. The system includes z-gradient coils of axis oz; z-gradient tubes of axes parallel to the axis oz including coils arranged in a ring outside the z-gradient coils; x-gradient coils and y-gradient coils of saddle shape arranged around the z-gradient coils; and x and y-gradient tubes of axes parallel to the axis oz and situated in a ring outside the z-gradient coils, being interposed between the z-gradient tubes, with each of the x and y gradient tubes including coils..
08/28/14
20140239952
new patent Magnetic resonance imaging system
Provided is a magnetic resonance imaging (mri) apparatus. The mri apparatus includes a magnet configured to generate a magnetic field; a magnetic field coil configured to generate a gradient magnetic field and the magnetic field coil is disposed inside the magnet; and a radio-frequency (rf) coil unit comprising rf coil elements and the rf coil unit is disposed inside the magnetic field coil..
08/28/14
20140239951
new patent Mr electrical properties tomography
The invention relates to a method of mr imaging of an object (10) placed in an examination volume of a mr device (1). It is an object of the invention to enable improved electrical properties tomography.
08/28/14
20140239948
new patent Apparatus and method for in-field magnetic measurements
A magnetic field verifier apparatus includes a magnetic field detection element configured to produce a voltage signal in response to an applied magnetic field wherein the voltage signal corresponds to the strength of the applied magnetic field. Substantially identical circuit boards or units are connected to a central unit or mother board to place magnetic field detection elements of each board or unit in an mutually approximately orthogonal relationship.
08/28/14
20140239945
new patent Two-wire probe with communication capability
A system of communicating vehicle detection is provided. The system may include a probe having at least a probe controller and a magnetic sensor for detecting the earth's magnetic fields, and a control system having a main controller, an output port and a two-wire interface for communicating with the probe.
08/28/14
20140239943
new patent Magnetic tracking system
Apparatus for determining a location of a target, the apparatus comprising: first and second magnetic dipole beacons positioned at substantially a same spatial location having respectively first and second time dependent magnetic moments oriented in different directions that generate first and second magnetic fields having different time dependencies; at least one magnetic field sensor coil located at the location of the target that generates signals responsive to the first and second magnetic fields; and circuitry that receives the signals generated by the at least one sensor coil and processes the signals responsive to the different time dependencies of the magnetic fields to determine a location of the at least one sensor coil and thereby the target.. .
08/28/14
20140239942
new patent Method for contactless measurement of a relative position by means of a hall sensor
The present invention relates to a method for contactless measurement of a relative position of a magnetic field source, which produces a magnetic field and a magnetic field sensor in relation to each other. The present invention further relates to a corresponding displacement sensor.
08/28/14
20140239893
new patent Electronic device, feed unit, and feed system
An electronic device includes: a power receiving section configured to receive electric power transmitted using a magnetic field or an electric field; and a state informing section configured to inform a device state of the electronic device, by using the electric power received by the power receiving section. When an abnormal state is detected as the device state, the state informing section also informs the abnormal state by using the received electric power.
08/28/14
20140239889
new patent Wireless charging system
A wireless charging system includes a power transmission unit for transmitting power and a power reception unit for receiving the power transmitted from the power transmission unit in a non-contact manner and supplying the power to a receiving load. The transmission unit includes a power transmission coil for generating a magnetic field based on an alternating voltage supplied.
08/28/14
20140239747
new patent Inertial drive actuator
An inertial drive actuator includes a displacement unit, a vibration substrate, a movable body, a first magnetic field generator which generates a magnetic field so that, a magnetic attractive force or a magnetic repulsive force acts in a direction opposite to the movable body, a first yoke, and which induces a magnetic flux generated by the first magnetic field generator such that, the flux generated by the first magnetic field generator is concentrated on a surface of the movable body, opposite to the vibration substrate, and second yokes and on a side of the vibration substrate, opposite to a direction facing the movable body, and the second yokes and control a frictional force acting between the movable body and the vibration substrate by controlling the magnetic field generated by the first magnetic field generator.. .
08/28/14
20140239746
new patent Inertial drive actuator
An inertial drive actuator includes a displacement unit, a vibration substrate, a first magnetic field generator which generates a magnetic field, a movable body disposed on a flat surface of the vibration substrate, and which includes a first yoke that concentrates a magnetic flux of an n-pole and an s-pole generated by the first magnetic field generator, at a predetermined position, and a second yoke which is disposed on a side of the vibration substrate, opposite to a direction facing the movable body. A movement in a direction perpendicular to a direction in which, the movable body is driven is regulated mechanically by end portions of the second yoke facing end portions of the first yoke at an outer side of the vibration substrate, and a frictional force is controlled by controlling the magnetic field, and the movable body is driven..
08/28/14
20140239737
new patent Electronic control device for controlling actuators
The invention relates to an electronic control device (28) for controlling at least one rotatably arranged actuator, comprising electronic components, such as a device (30) for the contact-free reception of electrical energy and the contact-free reception of signals, a device (27a) for generating magnetic fields and a common housing (39) that encloses the electronic components (27a, 30) and assimilates them, whereas the control device (28) is rotatable and designed for attaching on or into a component rotating around a rotational axis (a).. .
08/28/14
20140239728
new patent Power transmission system
The power transmission system of the present invention includes: an inverter unit 130 that converts a dc voltage into an ac voltage of a predetermined frequency to output; a power-transmission antenna 140 into which the ac voltage is input from the inverter unit 130; and a power-transmission control unit 150 that controls a frequency of an ac voltage output by the inverter unit 130, with electric energy being transmitted via an electromagnetic field from the power-transmission antenna 140 to a power-reception antenna that faces the power-transmission antenna 140, wherein the power-transmission control unit 150 controls in such a way as to select a frequency at which an antenna unit works as a constant voltage source when seen from a load side, to transmit power.. .
08/28/14
20140239204
new patent Electromagnetically actuated multi-leaf collimator
A multi-leaf collimator with electromagnetically actuated leaves. The multi-leaf collimator includes a plurality of leaves, a leaf guide configured to support the plurality of leaves, and a plurality of magnets.
08/28/14
20140239061
new patent System and method for tracking items by means of longwave, magnetic signal tagging
The invention relates to a system and method for tracking items of interest using one or more signal tags, configured to receive information and transmit information using a longwave frequency in the magnetic field. Additional components include one or more data entry devices; one or more tag readers; and one or more database components, configured to transmit information to and receive information from the one or more data entry devices and the one or more tag readers..
08/28/14
20140238978
new patent Non-contact power receiving device and non-contact power transmission device
In a non-contact power transmission device according to the present invention, a non-contact power receiving device includes a changeover portion for opening and closing the connection between a power receiving coil and a load device which is supplied with electric power from the power receiving coil, the power receiving coil being adapted to output electric power by receiving a high-frequency magnetic field from an induction heating apparatus used as a feeding apparatus, wherein a power-reception-side control portion for controlling opening/closing operations of the changeover portion is adapted to control the opening/closing operations of the changeover portion, in order to adjust the electric power supplied to the load device from the power receiving coil.. .
08/28/14
20140238852
new patent Cylindrical evaporation source
Cylindrical evaporation source which includes, at an outer cylinder wall, target material to be evaporated as well as a first magnetic field source and a second magnetic field source which form at least a part of a magnet system and are arranged in an interior of the cylindrical evaporation source for generating a magnetic field. In this respect, first magnetic field source and second magnetic field source are provided at a carrier system such that a shape and/or a strength of the magnetic field can be set in a predefinable spatial region in accordance with a predefinable scheme.
08/28/14
20140238804
new patent Conductor arrangement for producing an electromagnetic field and route for vehicles, in particular for road automobiles, comprising the conductor arrangement
A conductor arrangement for producing an electromagnetic field and thereby transferring energy to vehicles driving on a surface of a route, in particular for transferring energy to road automobiles is disclosed. The conductor arrangement includes a first, lower coating layer, a second upper coating layer, and at least one electric line which—if arranged as part of the route—extends under the surface of the route in and/or about the travelling direction of the vehicles.
08/28/14
20140238734
new patent Electromagnetic cloak using metal lens
A cloak is provided for concealing an object to an electromagnetic field. A first vane encloses the object and a second vane encloses the first vane.
08/28/14
20140238662
new patent Mitigation of downhole component vibration using electromagnetic vibration reduction
An apparatus for reducing vibration in a downhole component includes: an electrically conductive auxiliary mass attached to the component and configured to vibrate in a direction corresponding to a direction of downhole component vibration and absorb a portion of the downhole component vibration; and a magnetic component configured to generate a magnetic field through the auxiliary mass having a direction at least partially perpendicular to the direction of auxiliary mass vibration, the magnetic field configured to induce a current in the auxiliary mass in response to auxiliary mass vibration. The apparatus has an auxiliary mass vibration frequency tuned relative to a selected natural vibration frequency of the downhole component to reduce vibration of the downhole component, the auxiliary mass vibration frequency based on a magnetic stiffness of the auxiliary mass, the magnetic stiffness based on a strength of the magnetic field and/or a resistance of the auxiliary mass..
08/28/14
20140238633
new patent Casting device and casting method
A method for manufacturing a cast component with a casting device includes providing a casting device. The casting device comprises a filling chamber, a mold cavity comprising a hollow space, runners comprising at least one of a different length and a different cross-section, and a plunger arranged in the filling chamber.
08/21/14
20140236551
Computer simulation of electromagnetic fields
A method and system is provided for solving for electromagnetic fields by approximating an electromagnetic function as a sum of basis functions multiplied by coefficients to be determined. The set of equations used to determine the coefficients results from taking derivatives of the action integral with respect to the coefficients (and/or other parameters) and setting the derivative equal to zero, thereby extremizing the action integral..
08/21/14
20140236514
Handheld devices and structures to detect sticky devices having magnets
Apparatus and methods for detecting concealed personal security threats may comprise conventional mirrors and less conventional arrays of hall-effect sensors and/or magnetometers, preferably at least two axis or three axis sensors or sensors mounted back-to-back. The concealed personal security threats may comprise, for example, sticky devices consisting of geographic position sensors for covertly broadcasting motor vehicle location data, of so-called improvised explosive devices (ied's) which may be covertly or openly affixed to, for example, the undercarriages of motor vehicles using strong magnets and later exploded, the former giving away private location information, the latter causing damage to the motor vehicles to which they are affixed and sticky containers for hiding contraband among other “sticky devices.” magnetic fields detected by, for example, arrays of hall-effect sensors and the like may be quantified and stored in processor memory as a vehicle magnetic field signature.
08/21/14
20140236348
Monitoring system for transport chains for conveyors of articles
Monitoring system for a conveyor of articles (100). The conveyor of articles comprises at least one transport chain (105) adapted to be moved along a movement direction, and a guide structure (132) of the transport chain comprising a lower guide element (135) adapted to support the chain from below and a higher guide element (140) adapted to insist on the chain from above and facing toward the lower guide element.
08/21/14
20140236311
Endoprosthesis
An endoprosthesis (1) is proved which includes an elongate housing (3) having a drive (5) secured through a threaded drive shaft (7) to an extension shaft (9) therein, the drive (5) operable to cause the extension shaft (9) to move axially with respect to the body, and the extension shaft (9) and housing (3) configured to be securable to a bone to act as a prosthetic replacement for removed bone. The drive (5) is operable in a step-wise fashion through a control circuit (50) which includes an inductive coil (52).
08/21/14
20140235994
Optimized velocity-selective arterial spin labelling module
A velocity selective preparation method is disclosed, for velocity selective arterial spin labelling (vsasl), the vsasl method using non-selective radiofrequency pulses and magnetic field gradients to modulate the longitudinal magnetization of the spins as a function of their velocity, wherein said velocity selective preparation method comprises an n-segment b1 insensitive rotation that is resistant to eddy current artifacts.. .
08/21/14
20140235929
Magnetic field stimulation
A magnetic coil system featuring a multi-layer structure (312a, 312b), a spherical shape, or both allows for efficient generation of a gradient magnetic field that induces an electric field in air in a region proximate to the coil. By subjecting at least a portion of a person's brain to the induced electric field various psychiatric disorders can be treated..
08/21/14
20140235925
Systems and methods for portative magneto therapy
In accordance with one embodiment, a system for applying magnetic fields to one or more objects is provided. The system may include a one or more neodymium disc magnets for providing magnetic fields.
08/21/14
20140235451
Superconducting coil protection method and superconducting magnet device
An object of the present invention is to provide a method for protecting a superconducting coil, which method prevents damage to the superconducting coil caused by a quench or the like, in a new way, without using a voltage (a change in voltage) generated in the superconducting coil. Provided is the method for protecting a superconducting coil made by winding tape-like superconducting wire having a superconducting layer.
08/21/14
20140235448
Method and apparatus for compensating for drift in magnetic field strength in superconducting magnets
An mri system has a cylindrical superconducting magnet assembly contained in a bore tube of a cylindrical vacuum vessel (ovc), and a gradient coil assembly situated within the ovc bore tube. In an imaging region within a bore of the gradient coil assembly, the magnet assembly produces a magnetic field that is subject to drift during operation of the mri system.
08/21/14
20140234864
Magnetic removal or identification of damaged or compromised cells or cellular structures
A method for magnetic cellular manipulation may include contacting a composition with a biological sample to form a mixture. The composition may include a plurality of particles.
08/21/14
20140234142
Device for transmitting power through rotating magnetic fields
A device for the transmission of power using rotating magnetic fields includes a drive shaft with an external magnet, a pump shaft with an internal magnet suited to entrained by the external magnet, a rear tight chamber or containment body for the pump shaft and the internal magnet, the rear body being positioned between the internal magnet and external magnet. The rear body includes at least a glass-shaped casing and one or more probes buried within the thickness of the glass-shaped casing..
08/21/14
20140234005
Skin care device having function for moving vertically
The present invention relates to a beauty apparatus comprising: a case unit comprising an upper case for accommodating powder and a lower case detachably attached to the upper case; a guide mounted to the lower case between the upper case and the lower case; a magnetic field generating unit mounted to an inside of the lower case between the guide and the lower case, for generating a time-varying magnetic field; a magnetic body coupling part moving through the guide within the lower case according to a change of a magnetic field; a movable plate mounted to the magnetic body coupling part passing through a guide hole formed in the guide on the magnetic body coupling part, for restricting movement of the magnetic body coupling part; and a puff pad enclosing the guide to vibrate according to movement of the movable plate.. .
08/21/14
20140233282
Noise filter
A noise filter is assembled to an electric power conversion device and has a metal housing casing and two capacitors connected to an external terminal of the device through which an electric power conversion circuit is connected to an external device. The two capacitors, the housing casing and the external terminal make a current loop.
08/21/14
20140232563
Vehicle identification
Magnetometers under the road surface detect variations in the vertical and longitudinal horizontal components of the magnetic field over time in response to passing vehicles. A trajectory of these components in the phase space of these field components is regularized to obtain a magnetic signature.
08/21/14
20140232499
Modular magnetic device for clamping ferromagnetic workpieces
The present invention refers to a magnetic device for clamping ferromagnetic workpieces comprising a frame having a first magnetic circuit configured to generate a first magnetic field adapted to clamp a ferromagnetic workpiece to be processed; a second magnetic circuit configured to generate a second magnetic field adapted to clamp said ferromagnetic workpiece to a machine tool bed; said first magnetic circuit and said second magnetic circuit being adapted to be controlled to turn on and/or off independently one from the other. The modular magnetic device is characterized in that it comprises first and second mechanical and electrical connection means for mechanically and electrically connecting said magnetic device, when in operation, to corresponding second and first complementary mechanical and electrical connection means of other modular magnetic devices located adjacent thereto, to create a series of modular magnetic devices mechanically and electrically connected together..
08/21/14
20140232497
Septum magnet
A device for generating a magnetic field includes at least one electric coil having electric conductors that are arranged along a circular arc within a first angular range and that deviate from the circular arc within a second angular range. At least one magnetic yoke is arranged along a part of the first angular range..
08/21/14
20140232402
Magnetic resonance imaging apparatus and operating method
In order to extend the lifetime of a cooler and reduce down periods of an mri apparatus due to the maintenance, a cooling capacity of the cooler 107 of the superconducting magnet is controlled so that cooling heat absorption almost equivalent to an amount of heat penetrating into the refrigerant vessel 202 of the superconducting magnet is exerted, and pressure in the refrigerant vessel 202 is maintained within an acceptable pressure range. In addition to this, at least either change amount of magnetic field strength or magnetic field homogeneity in an imaging space due to a pressure change in the refrigerant vessel 202 is compensated by the magnetic field adjustment unit..
08/21/14
20140232400
Object discrimination method using ultra-low magnetic field nuclear magnetic resonance and an object discrimination apparatus of the same
Provided are an object discrimination method and an object discrimination apparatus using an ultra-low magnetic field nuclear magnetic resonance (nmr). The method includes measuring the respective spin-lattice relaxation times at a plurality of strengths of prepolarization magnetic fields with respect to a measurement target and classifying the measurement target using the spin-lattice relaxation times..
08/21/14
20140232398
Methods and apparatus for compensating for drift in magnetic field strength in superconducting magnets
An mri system has compensating material located at a radial position between the imaging region and the basic field magnet in a location that will be heated over a range of temperatures during operation of the mri system. The compensating material has a magnetic susceptibility that varies with temperature over the range of temperatures in a manner opposite to the variation in magnetic susceptibility of the material of the ovc bore tube of the basic field magnet over the range of temperatures..
08/21/14
20140232394
Method and apparatus for obtaining main magnetic field information and radio pulse related information in a magnetic resonance imaging system with different flip angles
A method obtains main magnetic field information and radio frequency (rf) pulse related information in a magnetic resonance imaging (mri) system, in which a pulse having a first flip angle and a pulse having a second flip angle are transmitted to a target object at predetermined time intervals. The method includes: obtaining at least one first response signal with respect to the pulse, having the first flip angle, from the target object; obtaining at least one second response signal, with respect to the pulse having the second flip angle, from the target object; and combining the at least one first response signal and the at least one second response signal to obtain the main magnetic field information and the rf pulse related information..
08/21/14
20140232393
Mapping eddy current fields in mri system
Eddy current fields in a magnetic resonance imaging (mri) system are mapped by acquiring mri data from an object located in an imaging volume of the mri system. An mri data acquisition sequence is preceded by a pre-sequence including (a) a gradient magnetic field transition that stimulates eddy current fields in the mri system, and (b) a spatial modulation grid tag module that sensitizes a spatially resolved mr image of the acquired mri data to the stimulated eddy current fields that existed during the spatial modulation grid tag module.
08/21/14
20140232392
Apparatus, method, and magnetic resonance imaging system for shimming b1 magnetic field using rf transceiver coil and rf receiver coil
A method of shimming a magnetic field, includes applying radio frequency (rf) signals to an object, using a transceiver coil, and calibrating phase offsets of magnetic resonance signals acquired from the object through a receiver coil. The method further includes generating rf signals to be applied through the transceiver coil based on magnetic resonance signals acquired from the object through the transceiver coil and the calibrated magnetic resonance signals..
08/21/14
20140232391
Rotating frame pulsed nuclear magnetic resonance spectroscopy
An nmr method and apparatus for analyzing a sample of interest applies a static magnetic field together with rf pulses of oscillating magnetic field across a sample volume that encompasses the sample of interest. The rf pulses are defined by a pulse sequence that includes a plurality of measurement segments configured to characterize a plurality of relaxation parameters related to relaxation of nuclear magnetization of the sample of interest.
08/21/14
20140232389
Measurement head for a magnetoelastic sensor
A measurement head (1) for a magnetoelastic sensor having a ferrite core (3). The core (3) has a first end (5), on which a field coil (9) which generates a magnetic field is fitted, and at least a second end (7), on which a magnetic field sensor (11, 41) is fitted..
08/21/14
20140232384
Magnetic core flux sensor
A magnetic core flux sensor assembly may include a flux sensor core portion and an elongated opening for receiving a conductor winding through the flux sensor core portion. The flux sensor core portion may include a width from a perimeter edge of the flux sensor core portion to the elongated opening that is constant.
08/21/14
20140232383
Magnetic core flux sensor
A magnetic core flux sensor assembly may include a flux sensor core portion and at least one elongated opening for receiving a conductor winding through the flux sensor core portion. An electrical current flowing through the conductor winding generates a magnetic field about the conductor winding and a magnetic flux flow about the elongated opening.
08/21/14
20140232382
Apparatus for detecting ferromagnetic objects and screening people and equipment
Apparatus for detecting a ferromagnetic object located on or in a person being screened comprises a first magnetic sensor which in use measures an ambient magnetic field or gradient within a first volume of space and produces a corresponding measurement signal, a primary power supply which provides power to the magnetic sensor, a signal processing circuit arranged in communication with the magnetic sensors configured to identify temporal variations in the measurement signal and from the identified temporal variations provide an output signal indicative of the presence of a ferromagnetic object within the volume of space, and a warning device operable by the output from the signal processing circuit to provide within the vicinity the apparatus at least one of an audible and a visible warning in response to the output signal from the signal processing circuit. The apparatus include a user operable input means which enables the warning device to be disabled by a user without powering down the magnetic sensors..
08/21/14
20140232380
Motion sensor, method, and computer-readable storage medium providing a motion sensor with a state processor having a reduced amount of state chatter
A motion sensor has a state processor to identify states associated with a magnetic field signal provided by a magnetic field sensing element. The state processor includes a state peak logic module configured to generate states that have a reduced amount of state chatter..
08/21/14
20140232379
Magnetic field sensor system with a magnetic wheel rotatable around a wheel axis and with magnetic sensor elements being arranged within a plane perpendicular to the wheel axis
It is described a magnetic field differential sensor system for measuring rotational movements of a shaft. The described magnetic field sensor system (200) comprises (a) a biasing magnet (210, 510) configured for generating a biasing magnetic field; (b) a magnetic wheel (230) having a wheel axis and a circumferential surface which comprises a regular structure of teeth (231) and gaps (232) arranged in an alternating manner, wherein (i) the magnetic wheel (230) is attachable to the shaft and (ii) the magnetic wheel (230) can be magnetized by the biasing magnetic field; and (c) a magnetic sensor arrangement (220) comprising four magnetic sensor elements (221, 222, 223, 224) being connected with each other in a wheatstone bridge configuration.
08/21/14
20140232378
Sensor arrangement
The invention relates to a sensor arrangement (2) for determining a relative rotation of two shafts that are arranged coaxially to one another (4, 6), which sensor arrangement comprises at least one magnetic element (29) arranged on a first shaft (4), at least one magnetic element (29) arranged on a second shaft (6) and at least one magnetic field-sensitive sensing element (20), which is arranged in a stationary manner between the magnetic elements (29) of the two shafts (4, 6) and which captures a magnetic field that results from the superposition of the magnetic fields (32) of the magnetic elements (29) of both shafts (4, 6).. .
08/21/14
20140232376
Current sensor
A current sensor includes: a core having a groove where a conductor through which a current flows is inserted, with a direction of plate width aligned with a direction of depth of the groove; and a detector element arranged more closely to an opening of the groove than the conductor, with a direction of detection laid along a direction of a space of the groove, and detecting strength of a magnetic field. The core has a u-shaped portion whose surface facing the conductor is parallel to a surface defining the plate width, and narrow-width portions whose groove width and core width along the direction of the space gradually expands and gradually narrows, respectively, from both ends on the side of the opening of the u-shaped portion toward the side of the opening.
08/21/14
20140232336
Charging station
A charging station for inductively charging an electric vehicle includes a movable primary coil that can generate a magnetic field in order to charge the electric vehicle. The primary coil is mounted in a movable manner in such a way that the coil can be moved by the electric vehicle and positioned relative to a secondary coil of the electric vehicle when the vehicle drives into the region, vicinity or range of the charging station.
08/21/14
20140232330
Wirelessly rechargeable battery and power transmitter
A wirelessly rechargeable battery is provided having coils oriented off major battery axes to facilitate good coupling with power transmitter magnetic fields. A magnetic core may house charging electronics for a compact form factor.
08/21/14
20140232316
Control module for a motorized surgical tool, the module including a trigger sensor, a motor rotor sensor and a control circuit that are sealed from the ambient environment
A control module for a motorized powered surgical tool. The module includes a trigger sensor, a motor rotor position sensor and control circuit.
08/21/14
20140232228
Power transmission apparatus
A rotational difference is generated between a first and a second rotor and a third rotor, which causes an induced current to flow in a first rotor winding. This causes a torque to act between the first rotor and the third rotor.
08/21/14
20140232200
Power transmission system
A power transmission system transmits power underwater between a power-transmitting device and a power-receiving device of which at least one is capable of moving freely underwater. In this power transmission system, the power-transmitting device and the power-receiving device are each provided with a resonance coil that performs the power transmission wirelessly underwater by means of magnetic field resonance.
08/21/14
20140232039
Method for manufacturing detecting sensor, detecting sensor, and transmission
A detecting sensor is disclosed having a magnet, a plurality of magnetic field detecting sensor elements, and a housing. The magnetic field detecting sensor elements have a plurality of adjacent, overlapped bodies and a plurality of terminals projecting from the bodies in a same direction.


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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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