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7609139 |
Split Florida-helix magnet
An electromagnet having at least one access port oriented perpendicularly to the electromagnet's central axis. The magnet has a conventional helical winding along its central axis. However, at some...
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7583172 |
Multi-frequency electromagnetic field generator
Disclosed is a multi-frequency electromagnetic field generator that is capable of generating electromagnetic flux fields that are projected at a distance from the device. Radial fields, horizontal...
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7557577 |
Water-soluble paramagnetic substance reducing the relaxation time of the coolant in an MRI system
The invention relates to the use of a water-soluble paramagnetic substance, in particular a magnetic resonance contrast medium, to reduce the magnetic resonance relaxation time of a coolant for...
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7522027 |
Magnet assembly and a method for constructing a magnet assembly
A magnet assembly comprising a former having an outer surface ( 20 ) with a cavity ( 12 ) formed therein, and a coil ( 14 ) wound into the cavity ( 12 ), said cavity being of greater depth than the...
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7522026 |
Alignment method and system for electromagnet in high-energy accelerator
New and useful alignment method and system for electromagnets used in the high energy accelerator that can make the installation simple and less time consuming are disclosed. By measuring the...
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7518479 |
Inline electromagnetic tool actuator
An inline electromagnetic tool actuator incorporates an actuator housing, an elongated armature, a tool assembly, spaced-apart return magnets, at least one drive magnet, and at least one magnet...
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7508195 |
Anti-distortion electromagnetic sensor method and system
A source for inducing an electromagnetic magnetic field, comprising: a substrate, a conductive layer coupled to the substrate, and a planar coil coupled to the substrate, wherein the planar coil...
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7497578 |
Monitoring scan mirror motion in electro-optical readers and image projectors
Crosstalk between a drive coil and a primary feedback coil is eliminated by positioning a secondary feedback coil in proximity with the drive coil for contamination by the crosstalk to the same...
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7487798 |
Linear solenoid valve
A bottom of a housing has a protruding support extending a predetermined distance toward a movable core, and the movable core has an annular boss extending a predetermined distance toward the...
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7479860 |
Magnetic field generating assembly and method
A magnetic field generating assembly comprising a set (A 1 -A 3 ;B 1 -B 3 ;C 1 -C 3 ) of, typically substantially coaxial, coils substantially symmetrically arranged about a plane orthogonal to the...
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7472883 |
Electromagnetic actuator
A bobbin and a magnetic transmitting/receiving stator are positioned by fitting two positioning projections provided for a bobbin flange into two positioning holes formed in a stator flange. The...
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7463129 |
Magnet structure
A magnet structure includes a permanent magnet assembly and first and second pole assemblies. The permanent magnet assembly includes an enclosure having an open portion and a magnetic mass disposed...
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7458557 |
Electromagnetic valve
A projection is provided in a flange of a resin spool, and a concave portion is provided in a yoke in a position facing the projection. The movement of the spool in the radial direction of the...
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7453342 |
Method of controlling and stabilizing laser output
This invention describes a means by which lasers and laser beam controllers mounted on moving vehicles or other unstable platforms can be isolated from vibrations. By magnetically levitating the...
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7439836 |
Magnetic field generating apparatus for magnetic resonance imaging
A Magnetic Resonance Imaging (MRI) system is disclosed. The MRI system includes a cryogenic magnet assembly with a cryogenic vessel housing a superconducting magnet. Disposed radially inboard of...
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7432791 |
Magnet arrangement for carrying, guiding and/or braking systems in magnetic levitation vehicles
A magnet arrangement ( 1 ) for magnetic levitation vehicles is described that is comprised of an electromagnet having a plurality of magnet poles, said magnet poles having cores connected via pole...
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7431262 |
Digital regulators
Digital regulators using a plurality of latching solenoid actuators, each having a spring return, the springs being configured to provide a force on the valve member of a regulator, when the...
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7403089 |
Magnet assemblies
This invention relates to magnetic assemblies and, in particular, to assemblies which are useful for inducing magnetic fields within vacuum chambers. Thus a magnetic assembly, generally indicated...
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7375528 |
Shielded, asymmetric magnets for use in magnetic resonance imaging
Magnetic resonance systems are provided which employ a shielded, asymmetric magnet to produce an offset dsv. The magnets include at least a first coil C 1 , which carries current in a first...
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7360751 |
Magnet unit
A magnet unit is provided with a solenoid with a coil whose core is attached in a recess on the front side of a base, with a movable anchor activated by a recoil spring with a valve closing element...
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7355499 |
Magnet assembly
A magnet assembly comprising first and second sets of coils ( 1, 2 ) for generating respective magnetic fields, wherein the coils are constructed and arranged such that under working conditions, a...
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7330092 |
Superconductor magnet coil configuration
A superconducting magnet coil configuration comprising at least one section of a superconducting strip conductor, which is continuously wound in a cylindrical winding chamber ( 1 ) between two end...
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7317369 |
Superconductor magnet coil configuration
A superconducting magnet coil configuration comprising at least one section of a superconducting strip conductor, which is continuously wound in a cylindrical winding chamber ( 1 ) between two end...
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7296781 |
Electromagnetic fuel injection valve
An electromagnetic fuel injection valve includes a coil assembly housed in a solenoid housing having a cylindrical magnetic metal coil case which integrally has, at one end side, a ring-shaped end...
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7286033 |
Ferro-magnetic force field generator
A strong-magnetic-force field generating device is provided which can increase a magnetic force field and which can make the magnetic force field spatially uniform without adding an additional...
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7276997 |
Apparatus for positioning a non-imaged extremity during a magnetic imaging process
An apparatus for magnetic resonance imaging having a magnetic assembly with a main magnet, a shielding system positioned outside the main magnet, and a first and second space for positioning the...
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7274192 |
Combined open and closed magnet configuration for MRI
A magnetic resonance imaging (MRI) magnet having a first section and a second section is disclosed. The first section has a first housing, and a first set of magnet coils arranged about a common...
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7248048 |
Apparatus for magnetic resonance imaging
An apparatus for magnetic resonance imaging includes a first magnet for generating a first magnetic field and a second magnet for generating a second magnetic field, dissimilar to the first...
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7233223 |
Transformer winding
A Winding for high voltage transformer having a predetermined number of spaced winding groups joined to form a single winding transformer, each spaced winding group being solenoid wound from a...
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7224253 |
Assembling structure of field coil
The present invention relates to an assembling structure of field coil, which has a simple mounting structure for a diode and a resistor to cut an off-noise of an electromagnetic clutch and to...
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7215231 |
MRI system
In one embodiment, a ferromagnetic frame for use in an MRI system comprises first and second opposing ferromagnetic elements magnetically coupled by a flux return path. First and second poles are...
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7215230 |
Method for calculating the conductor path of a superconductor from the coil body to the joint and associated devices
A method for calculating the shape of a band-shaped superconductor ( 3 ) of a solenoid-shaped coil section of a high-field magnet coil ( 1 ) in a transfer region ( 5 ) is characterized in that the...
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7212004 |
Multi-layer magnet
A shielded superconducting MRI magnet system uses a multi-layer shielded coil design. By splitting the magnet coils into a plurality of coil layers, an increased number of degrees of freedom is...
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7196603 |
Magnetic coil design using optimization of sinusoidal coefficients
Methods for designing magnetic coils, particularly open gradient coils, and methods and systems for using open coils for diagnostic, testing, and laboratory systems. A method for designing coils...
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7193415 |
Magnetic lens, method and focus volume imaging MRI
A ferromagnetic lens in the presence of a DC magnetic field and a smaller AC magnetic field creates a localized minimum of the magnitude of the magnetic field vector of the combined magnetic field...
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7187260 |
Electromagnetic device with cover for prevention of damage to conductor of electromagnetic device
A stepping motor according to the present invention used in a case containing oil includes a motor having a coil formed with a conductor wound around a bobbin and a cover member enclosing the coil,...
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7173507 |
Magnet coil system for contactless movement of a magnetic body in a working space
A magnetic body is to be moved in a contactless fashion in a working space with the aid of the magnet coil system composed of fourteen individually drivable individual coils. The coil system is to...
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7173422 |
Generator for generating time-variable magnetic fields and magnetic resonance device
In one aspect, a generator for generating time-variable magnetic fields is provided. The generator includes a gradient coil having conductors extending in an area defined by a hollow first...
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7170291 |
Additional fringe field shield for a superconducting magnet coil system
An actively shielded superconducting magnet coil system ( 1 ) for generating a magnetic field in a working volume ( 6 ), which is rotationally symmetric about a z-axis, comprising a radially inner...
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7167004 |
Open MRI magnet assembly with paired planar driving coils having opposite current flows and a racetrack, nested, or substantially-planar multi-coil shape
The present invention provides a magnet assembly ( 30 a , 30 b ) comprising a pair of drive coils ( 31 a , 31 b ; 32 a , 32 b ; 33 a , 33 b ) symmetrically disposed with respect to a reference...
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RE39460 |
Asymmetric superconducting magnets for magnetic resonance imaging
Asymmetric, compact superconducting magnets for magnetic resonance imaging are provided. The magnets have a homogeneous region (the “dsv”) which can be located close to one end of the magnet so...
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7138895 |
Field coil assembly for an electromagnetic clutch for a compressor
The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor, in which a coil wire of an electromagnetic coil body exposed to a protrusion of a bobbin is...
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7135948 |
Dipole shim coil for external field adjustment of a shielded superconducting magnet
An actively shielded superconducting magnet having a dipole shim coil for adjusting and fine-tuning an external or far fringe magnetic field produced by a main coil of the magnet. An active shield...
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7134640 |
Valve for controlling fluids
A valve for controlling fluids, including a housing in which an armature for actuating an actuating element is disposed, a valve insert disposed coaxially to the armature and an intermediate...
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7129628 |
Velocity modulation coil apparatus and cathode-ray tube apparatus
A pair of velocity modulation coils are placed with a horizontal plane including a tube axis interposed therebetween, and a pair of magnetic substances are placed with a vertical plane including a...
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7119485 |
Cathode-ray tube apparatus
BVM coils for modulating a scanning velocity in a horizontal direction of electron beams emitted from an electron gun are provided at a position where the BVM coils are overlapped with an electron...
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7116197 |
Magnet structure
A magnet structure produces a field within a magnet gap. The field is provided at least in part by a pair of permanent magnets that are fixed in place by a frame. The frame fixes a magnet assembly...
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7114242 |
Layered wing coil for an electromagnetic dent remover
Methods of fabricating electromagnet assemblies are disclosed. In one embodiment, a includes forming a first helix and a second helix, each helix having a first end and a second end and a...
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7106156 |
Superconductor cables and magnetic devices
Superconducting cables and magnetic devices are disclosed.
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7098584 |
Deflection yoke
A deflection yoke is used for a cathode ray tube (CRT) including a glass tube having a screen surface and a straight portion for accommodating an electron gun. The deflection yoke includes a main...
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