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5204650 |
Switch for controlling current flow in superconductors
A superconductive switch is provided with a pair of superconductive routes which are wound around a cylindrical core in a bifilar fashion. One superconductive wire is constituted of a pair of...
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5194810 |
Superconducting MRI magnet with magnetic flux field homogeneity control
An open access superconducting MRI magnet includes a ferromagnetic frame open on at least two sides and having upper and lower end plates and at least two support posts. A superconducting coil...
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5189386 |
Aluminum-stabilized superconductor and superconducting coil, and method of manufacturing the superconductor
Disclosed is a superconductor which has an aluminum area at the center of the cross section of the superconductor and a copper-covered multifilamentary NbTi composite conductor at the periphery...
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5173677 |
Superconducting magnetic energy storage system with low friction coil support
A superconducting magnetic energy (SMES) system having an axially sectioned multilayered solenoid coil immersed in a liquid helium bath contained in annular helium vessel includes as an interface...
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5173678 |
Formed-to-shape superconducting coil
A superconducting coil assembly. The assembly includes an insulating substrate, a plurality of insulating layers disposed in a stacked assembly on the substract, and a superconducting spiral...
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5168259 |
Superconducting coil
A superconducting coil is disclosed. A plurality of coils made of oxide superconducting materials are formed on the respective surfaces of substrates, and the adjacent coils mounted on the...
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5164696 |
Apparatus for eliminating trapping of magnetic flux from an object
A magnetic shielding apparatus for eliminating magnetic flux from an object comprises a first superconductor wall provided at one side of the object and a second superconductor wall provided at the...
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5160911 |
Toroidal constant-tension superconducting magnetic energy storage units
A superconducting magnetic energy storage unit is provided in which the magnet is wound in a toroidal fashion such that the magnetic field produced is contained only within the bore of the magnet,...
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5153804 |
Hybrid current limiter having superconductor windings
A hybrid current limiter comprising a first winding of non-superconducting conductive material having a large number of turns and electrically connected in series with a superconductoring coil of...
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5153546 |
Open MRI magnet
In an open MRI magnet, the magnet is capable of being rotated such that a patient can be imaged while either lying down or standing up. The open MRI magnet is rotated about a pivot located upon a...
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5148137 |
Containment vessel for use with a pulsed magnet system and method of manufacturing same
A cryogenic containment vessel for use with a pulsed superconducting magnet system includes a superconducting coil positioned within the cryogenic containment vessel for providing a magnetic field....
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5140290 |
Device for inductive current limiting of an alternating current employing the superconductivity of a ceramic high-temperature superconductor
A device for inductive current limiting of an alternating current consisting of an induction coil (2), which includes at least one winding and through which current flows, a body (3) made of a...
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5138383 |
Apparatus for using superconductivity
An apparatus for using superconductivity intended to increase its critical current density by locating not a superconductor of the metallic type but another superconductor of the ceramic type on...
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5138326 |
Magnetic field generating assembly and method
A magnetic field generating assembly including self-contained modules formed from relatively high temperature superconducting material. A magnetic flux guide, such as a yoke, is positioned relative...
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5130687 |
Device for storing electromagnetic energy in toroidal superconducting windings
A device for storing electromagnetic energy in toroidal superconducting windings of circular right cross-section, wherein the device is constituted by a plurality of flat cylindrical coils having a...
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5130686 |
Magnetic field shaper
The coil of a solenoid has a pair of cylindrical, superconductive bands ped coaxially about its exterior. The bands are mounted for movement axially along the outer surface of the coil. The bands...
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5126711 |
Superconductive coil system
A novel construction of a superconductive coil system, having sufficient coupling strength and stiffness and being easy to assemble, is disclosed. A coil retainer of a stiffened cylindrical shell...
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5126317 |
Bearing system employing a superconductor element
A bearing system that includes a superconductor bearing and a magnetic rotor that can carry a load. The bearing system exploits the Meissner effect to levitate the magnetic rotor. The magnetic...
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5122772 |
Superconductive coil assembly
In a superconductive coil assembly, superconductive wires are extended in a sheath tube which also defines a passage for allowing a liquid helium to pass therethrough. Sheath tube is housed in...
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5115219 |
Superconducting magnetic energy storage apparatus structural support system
A superconducting magnetic energy storage apparatus comprising a cylindrical superconducting coil; a cylindrical coil containment vessel enclosing the coil and adapted to hold a liquid, such as...
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5113163 |
Adjustable magnetic field superconducting solenoid
A cylindrical superconducting solenoid adapted to receive cylindrical inserts within the bore thereof. The inserts are selected having a permeability or radial thickness which will absorb or...
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5113164 |
Superconductors with switchable magnetic domains
A tunable electromagnetic filter includes a type II superconducting medium which exhibits a permanent ferromagnetic component after exposure to a magnetic field. A magnetic field passes through the...
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5113165 |
Superconductive magnet with thermal diode
A superconductive magnet having at least one superconductive coil is provided. A thermal radiation shield is situated inside a vacuum vessel and the thermal radiation shield encloses the...
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5111173 |
Deflection electromagnet for a charged particle device
Semicircular superconducting deflection magnets for deflecting electron beams along a semiconductor orbit. The magnet 1 comprises a pair of race-track shaped main coils 2 and 3 disposed...
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5111172 |
Demountable coil form for epoxy-impregnated coils
A demountable coil form for fabricating epoxy impregnated superconductive coils having a split ring and a collar clamp secured to the ring on either side of an axially extending opening for...
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5107240 |
Superconducting transformer
A superconducting transformer comprises primary and secondary superconducting coils which are coaxial and made of superconducting wires, and a cryostat for maintaining the superconducting coils in...
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5105177 |
Superconducting magnet apparatus, cooling system therefor, and electromagnetic levitation traveling equipment incorporating the same
In a superconducting magnet apparatus including one winding of coiled superconductor wire, another winding of coiled superconductor wire, a cooling device for supplying coolant to cooling vessels...
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5101638 |
Magnetic field generating system
A magnetic field generating system comprises a magnetic field generator (1); and a cooling system (4) having at least one thermal shield (6) surrounding the magnetic field generator. The system...
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5099215 |
Coupling device for a superconducting magnet
The device is provided for detachably coupling a power source to a lead pin of the superconducting magnet, the magnet being located in a cryostat using helium and the lead pin being in the region...
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5097243 |
Thin-film transformer utilizing superconductive components
Thin-film transformer, for example suitable for use in a thin-film magnetic head, comprising a magnetic yoke composed of two magnetically permeable thin layers 3 and 5 and a primary turn...
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5095295 |
Superconducting switching device
A new type of reed switch is described. The switch is comprised of a fixed lead and a flexible reed made of a magnetic substance which are contacting in a glass enclosure. Two magnet rods are...
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5093645 |
Superconductive switch for conduction cooled superconductive magnet
A superconductive switch for a superconductive magnet is bifilarly wound on a bobbin with niobium-tin tape and laminated with stainless steel foil for structural rigidity is provided. The switch is...
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5093313 |
Electromagnetic ground to orbit propulsion method and operating system for high mass payloads
A reusable and regenerative electromagnetic propulsion method and operating system is provided for propelling high mass payloads to orbital velocities which does not require a vacuum environment....
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5083105 |
Axial support system for a MR magnet
Four magnet cartridge axial supports are provided to prevent axial motion between the magnet cartridge and the surrounding vacuum vessel. Each axial support includes two high strength steel rods in...
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5079533 |
Magnetic flux concentrators and diffusers
Switchable superconducting rings and hemi-rings positioned on the poles of magnets or electromagnets, are used to electronically concentrate magnetic fluxes, or to diffuse such fluxes within the...
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5065582 |
Dewar vessel for a superconducting magnetometer device
Outside of its interior space, a Dewar vessel contains a high-frequency screening device around the superconducting parts of the measuring device. At the same time, the high-frequency screening...
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5057489 |
Multifilamentary superconducting cable with transposition
A multifilamentary superconducting cable has two parallel spaced-apart guide wires. A first layer of mutually parallel superconducting filaments is woven partially around and between the guide...
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5047741 |
Epoxy-impregnated superconductive tape coils
A superconductive foil and a first and second foil of current conducting material. The first and second foil are soldered symmetrically about said superconductive foil forming a superconductive...
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5045826 |
Actively shielded magnetic resonance magnet without cryogens
An actively shielded refrigerated superconductive magnet is provided. The magnet includes a generally cylindrical vacuum vessel having an axially extending bore. A plurality of superconductive main...
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5038127 |
Process for reducing eddy currents in a superconductor strip, and a superconductor arrangement
An arrangement of electrically anisotropic high-temperature superconductors (A1, A2) on a non-superconducting metal strip (1) for alternating-current applications, such as magnets and electrical...
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5034713 |
Radial support system for a MR magnet
A refrigerated superconductive magnet is provided with six magnet cartridge radial struts supporting the magnet cartridge in the vertical and lateral directions. The struts are positioned such that...
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5032869 |
Axial thermal shield support for a MR magnet
Two pair of thermal shield axial supports are provided. Each support includes a strand of wire brazed on either end into threaded studs. One stud is threaded into a topped hole in the end of the...
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5023584 |
Magnet cartridge for magnetic resonance magnet
A cylindrical sleeve of thermally conductive material is provided together with two epoxy impregnated superconductive coils. The cylindrical sleeve defines a circumferentially extending rabbet on...
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5021914 |
Superconducting switch and current limiter using such a switch
There is disclosed a superconducting switch including two superconducting coils wound on a common bobbin wherein these coils have the same critical current value, and are connected in parallel so...
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5019247 |
Pulsed magnet system
A pulsed superconducting magnet system includes a vacuum vessel and a cryogenic containment vessel assembly disposed within the vacuum vessel. A superconducting coil is positioned within the...
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5018359 |
Cryogenic refrigeration apparatus
In a cryogenic refrigeration apparatus includes a thermal shield, a vacuum vessel and a magnetic shield which are telescopically arranged in that order toward the exterior of a cryogenic vessel...
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5012216 |
Superconductive gravimeter
A superconductive gravimeter comprises a spool (12, 14, 16) and a circumferential magnet (20, 22, 24), both of which are covered with superconductive material (48, 52, 58, 60) except at the...
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5012217 |
Integrated active shielded magnet system
A hybrid shielding arrangement for solenoid type cryogenic magnets used in MR systems uses both active and passive shielding elements to improve the effective shielding.
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5010311 |
Electronic modulation of magnetic fields
Novel methods of electronically modulating magnetic fields are described. The basic principle of the instant invention is based on the well known Meissner Effect. A superconducting element is...
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4996508 |
Temporal and spatial control of field topologies in solenoids
Devices and technique using specially configured switchable superconducting elements to achieve temporal and spatial modulation of magnetic fields created in the hollow of solenoids are provided.
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