Matches 151 - 200 out of 502 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
6126790 Method of magnetically orienting thin magnetic films with a multiple-coil electromagnet  
An electromagnet assembly magnetically orients a thin magnetic film deposited onto a surface of a substrate. The magnetic orientation can take place in a low-pressure processing environment such as...
6100780 Cryogenic-fluid-cooled open MRI magnet with uniform magnetic field  
An open magnetic resonance imaging (MRI) magnet having first and second spaced-apart superconductive coil assemblies each including a toroidal-shaped coil housing containing a superconductive main...
6086042 Fluid resistant solenoid actuated valve  
A fluid resistant solenoid actuated valve having a unitary bobbin and valve housing. The unitary housing defining a valve seat connection assembly adjacent the fluid connection end. A portion of...
6084497 Superconducting magnets  
A compact magnet is disclosed for high field, superconducting magnets for use in magnetic resonance spectroscopy. The magnet has at least a first and a second group of coils with the or each coil...
6081178 Superconductive magnet having a tube suspension assembly  
A superconductive magnet includes a cryogenic vessel enclosing superconductive coils, a thermal shield enclosing the cryogenic vessel, a vacuum enclosure enclosing the thermal shield, a tube...
6081179 Superconducting coil  
A structure of a superconducting coil capable of improving cooling efficiency is provided. The superconducting coil is formed by stacking a plurality of double pancake coils with each other. The...
6078234 Helium vessel for open architecture magnetic resonance imaging superconducting magnet  
A superconducting magnet utilizing a pair of donut-shaped annular magnet assemblies including in each a cryogen pressure vessel with a non-magnetic cylindrical divider forming pairs of concentric...
6067001 Method for designing electromagnets having arbitrary geometrical constraints  
A very flexible method for designing electromagnets which produce an arbitrary magnetic field. The conductors of the magnet can be constrained to an arbitrary surface or volume. The method provides...
6064290 Short bore-length asymmetric electromagnets for magnetic resonance imaging  
A homogeneous field electromagnet having at least two coils in each of two regions. One region has a smaller inner radius than the other region so that the magnet is asymmetrical. The magnet has...
6060883 RF coil system for an MR measuring means  
An RF coil system (1) for an MR tomograph comprising a magnet coil system and a gradient coil system is characterized in that the RF coil system is constructed of two partial systems (2, 2') which...
6054913 Current flow switching device for combined function magnetic field production  
An apparatus for creating and controlling a toroidal magnetic field, and a poloidal magnetic field employs a conductive sheet rolled into a spiral with cut outer legs aligned and bent outwardly...
6042707 Multiple-coil electromagnet for magnetically orienting thin films  
An electromagnet assembly magnetically orients a thin magnetic film deposited onto a surface of a substrate. The magnetic orientation can take place in a low-pressure processing environment such as...
6016094 Superconducting short circuit current limiter  
In a superconducting short circuit current limiter for an AC power supply net including an iron core, a primary coil and a secondary short-circuited superconductive coil, both being magnetically...
6014070 Ferromagnetic yoke magnets for medical magnetic resonance studies  
A magnet for use in medical magnetic resonance studies and having a pair of ferromagnetic pole pieces supported by a ferromagnetic yoke which establishes a flux return path. columns of the yoke are...
6011454 Superconducting magnet suspension assembly  
A suspension system for a superconducting magnet for supporting and spacing the thermal radiation shield and vacuum vessel about the cryogen vessel utilizing a carbon fiber reinforced composite...
5998998 Gradient coil for NMR devices  
A gradient coil (1) to generate switched magnetic field gradients in an nuclear spin resonance (NMR) device consisting of one or several current paths (a, b) following windings and being arranged...
5969525 MR imaging apparatus  
MR imaging apparatus includes a magnet (1) for generating in an examination zone (3) a uniform, steady magnetic field having substantially parallel lines of force extending in a first direction...
5966062 Magnetopermanent plate  
An improved magnetopermanent plate, constituted by a metallic body with high magnetic permeability, in the active plane of which there are provided hollow seats for accommodating corresponding...
5939962 Split type magnetic field generating apparatus for MRI  
Annular portions are arranged on mutually confronting surfaces at circumferential edge portions of low-temperature containers, the annular portions forming annular containing portions whose cross...
5936498 Superconducting magnet apparatus and magnetic resonance imaging system using the same  
In a superconducting magnet apparatus for use in a magnetic resonance imaging system, an opening for accommodating a subject is enlarged, so that the subject is prevented from feeling...
5936502 Magnet coils for MRI  
An MR imaging apparatus includes a magnet assembly having two generally opposed pole pieces. Current flowing in driver coils associated with each pole pieces generates a magnetic field in the...
5932959 Deflection yoke and color cathode ray tube with deflection yoke  
A deflection yoke for a cathode ray tube can correct both the pincushion distortion at the upper and lower edges of the screen and the misconvergence of the screen at the same time by the...
5917395 Main field magnet system for a magnetic resonance device  
A magnetic resonance device has a main field magnet system which generates a steady magnetic field in an examination zone. The main field magnet system includes a yoke structure which consists of...
5900792 Magnetic field homogeneity correction for superconducting magnet  
Magnetic field homogeneity correction system including coils for a superconducting magnet assembly are wound on the same coil forms as the axially spaced main magnet coils such that they are...
5900794 Single former active shield magnets  
This invention is concerned with actively shielded magnetic resonance (MR) devices and more particularly with an improved system which includes only a single former. All the coils of the system...
5883558 Open superconductive magnet having shielding  
An open superconductive magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced-apart assemblies and preferably has a "C" shape. Each assembly has: a vacuum...
5874882 Open and shielded superconductive magnet  
An open superconductive magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced apart assemblies, wherein each assembly has a magnetizable pole piece and a...
5874880 Shielded and open superconductive magnet  
An open superconductive magnet useful in magnetic resonance imaging (MRI) applications. The magnet has two spaced apart assemblies, wherein each assembly has a superconductive shielding coil spaced...
5847503 Electron beam deflection device for cathode ray tubes which is self convergent and geometry corrected  
A deflection device for a cathode-ray tube with three coplanar guns, comprising a pair of horizontal deflection coils and a pair of vertical deflection coils, each horizontal deflection coil having...
5838099 Deflection yoke having first coil parts for correction of cross-misconverge and red/blue vertical misconverge  
This invention provides an improved deflection yoke of a self-convergence system for deflecting electron beams of a color CRT with in-line electron guns for emitting the electron beams, capable of...
5818319 Magnets for magnetic resonance systems  
Procedures for designing magnets, including superconducting magnets, shim magnets, and gradient magnets for magnetic resonance systems, are provided. The procedures involve the use of a simulated...
5812043 Short superconducting annular MRI electro-magnet  
A superconducting annular electro-magnet for MRI purposes includes an annular winding within which a generally cylindrical space is provided. The winding adjacent each end of the space is formed...
5801609 MRI head magnet  
A magnetic resonance imaging (MRI) magnet includes different-diameter, longitudinally-proximate, first and second coil form segments. First and second superconductive coils are wound, respectively,...
5799653 Magnetic resonance imaging apparatus with decreased patient claustrophobia and increased access to patient  
An economic and practical MRI magnet structure defines a patient imaging volume that permits greater access to the patient and reduces patient claustrophobia. The opening of the magnet structure is...
5801334 Conductor (turn) insulation system for coils in high voltage machines  
An insulation system for the turns of a multiturn coil in a high voltage electrical generator or motor having the outer strands of each turn insulated with a high dielectric strength material such...
5798679 Magnetic flux bending devices  
An apparatus and method for bending magnetic flux in a magnetic circuit are disclosed. A means for conducting a substantially planar electric current is placed in the path of the flux of a magnetic...
5783901 Deflection yoke with a core having a higher magnetic reluctance at the top and bottom portions than the sides  
A deflection yoke for a cathode ray tube can correct both the pincushion distortion at the upper and lower edges of the screen and the misconvergence of the screen at the same time by the...
5748063 Generating highly uniform electromagnetic field characteristics  
An apparatus and method for generating homogenous electromagnetic fields within a volume. The homogeneity provided may be for magnetic and/or electric fields, and for field magnitude, radial...
5721522 NMR Spectrometer with superconducting magnet coil  
In a superconducting magnet coil configuration, in particular for a high resolution analytical nuclear resonance (NMR) spectrometer, with a cryostat having extremely low heat losses (low loss),...
5721523 Compact MRI superconducting magnet  
A closed magnetic resonance imaging (MRI) magnet has a single superconductive coil assembly including a coil housing containing a cryogenic fluid dewar containing a pair of longitudinally-outermost...
5696476 Open architecture magnetic resonance imaging superconducting magnet assembly  
A passively shimmed open architecture magnetic resonance imaging magnet utilizing separated superconducting coil assemblies with open space between including means to obtain a uniform magnetic...
5686876 Superconducting magnet apparatus  
The superconducting magnet apparatus includes a cryostat, a superconducting coil provided in the cryostat, and a current lead having a portion made of an oxide superconductor, for supplying a...
5675304 Magnet structure and method of operation  
A novel method and apparatus are described for modifying the field within the toroidal chamber of a stellarator or a tokamak. At least one additional electrical conductor is arranged around the...
5668518 Wire wound drum  
A wire wound drum using a magnetic element having a non-magnetic shell and a matrix material bonded to the shell and made up of a non-magnetic wire and a magnetic wire wound on the shell in bobbin...
5668516 Simplified active shield superconducting magnet assembly for magnetic resonance imaging  
An improved actively shielded superconducting magnet in which the main and bucking coils are directly wound onto respective coil support structures made of glass fiber-reinforced epoxy. The main...
5666054 Gradient coils for therapy tomographs  
A gradient coil system for the production of a magnetic transverse gradient field G x =dB z /dx in an NMR tomograph has axial and transverse access to the measuring volume. The gradient coil...
5661447 Coil bobbin for a magnetic head core  
A coil bobbin of molded resin integrally for use of a magnetic head core comprising a pair of connection plates arranged in parallel, a pair of coil winding bodies formed in U-letter shape with a...
5659277 Superconducting magnetic coil  
A superconducting magnetic coil formed of anisotropic high temperature superconducting material includes ferromagnetic flanges positioned coaxial to the longitudinal axis of the coil and at the...
5659281 Structured coil electromagnets for magnetic resonance imaging  
Superconducting electromagnets suitable for use in the NMR tomography of human organs, and a method of making the same, are disclosed. Each of the disclosed electromagnets are constructed according...
5635888 Super-conducting magnets  
A super-conducting magnet, particularly suitable for use with an MRI system is provided. The super-conducting magnet includes a closed loop former, a coil winding around the former of a material...
Matches 151 - 200 out of 502 < 1 2 3 4 5 6 7 8 9 10 11 >