General Electric Company

Ge Medical Systems Global Technology Company, LLC

Christopher G King

Anthony Mantone

Frank D Shaffer

Neil G Fiddes

Mark Gilbert Benz

Bruce Alan Knudsen

James F Maguire

Phillip William Eckels

Daniel C Woods

Delton A Grey, Jr

Gerhard S Kobus

Robert John Zabala

Melissa L Murray

Gregory F Hayworth

Lawrence Vincent Bischke

Granville G Ward, Jr

Malvin L Dennis

David R Turner

Mehdi Kaveh

O'Neil T McClam

Jerry Butler

Richard A Stephens

Daniel Molumby

Granville Geer Ward

Wayne Cooke

Kazuhiko Sato

John E Book

Antony Mantone

Jie Yuan

A burst disk assembly has a burst disk which is interposed within the high pressure relief vent of a superconducting magnet. The burst disk is a composite design constructed of a solid carbon graphite center surrounded by an integrally formed stainless steel ring. A captured burst disk flange insures proper placement and seating of the burst disk during replacement and supports the burst disk so as to prevent it from falling or dropping out of the assembly during replacement of the ruptured burst disk. A deformable gasket contiguous to the burst disk seals the burst disk to the captured burst disk flange when the disk and the flange are pressed together. Attachment bolts are used to provide even application of pressure along the face of the burst disk and the captured burst disk flange.

Superconductive magnet burst disk assembly

A cryogen recondensing system magnetic resonance imager superconducting magnet and a cryogen recondensing system with a rare earth displacement material cryocooler and superconductive lead bismuth magnetic sleeve provides superconducting current flow of currents induced by movement of the rare earth displacer which generate opposing magnetic fields to shield the superconducting magnet from the magnetic interference of the cryocooler rare earth displacer. Strips of high conductivity wave-shaped aluminum or sapphire rods may be embedded in the surface of the sleeve to lower the thermal resistance of the superconducting shield to enable it to quickly reach superconducting temperature.

Magnetic resonance imager with helium recondensing

Nb--Sn precursor articles are described that include a Nb alloy article that is at least partially coated with a layer of a Sn alloy, such as a Sn--Cu alloy. The precursor articles described herein have a controlled concentration of the impurity elements As and S in the Sn alloy layer. The concentration of these elements in the Sn alloy layer is less than or equal to 50 ppm by weight. This invention also describes a method for making Nb--Sn precursor articles having a controlled concentration of As and S impurities.

Nb--Sn precursors having controlled impurities and method of making

A method to provide large sheets of Nb.sub.3 Sn superconducting material suitable for use as a superconducting gradient shield in a magnetic resonance imaging system magnet by heating an anodized Nb-1 Zr sheet, tin dipping and reacting the sheet, and subsequently quenching the sheet in a purged atmosphere to provide an improved time constant and lowered Jc heating when used in a superconducting magnetic field.

Niobium tin sheet for superconducting magnets

Apparatus for forming welded joints on superconducting foils to form long lengths of foil for use in superconducting magnet tapes including fixturing for controlling the accurate positioning of sheared foils and control of the overlap to be welded.

Apparatus for joining foils used in superconducting magnets

A superconducting magnet shield includes a plurality of overlapping NbTi sheets welded together with a plurality of welds extending along elongated parallel slots in the overlap region with the slots extending in the direction of superconducting current flow.

Superconducting joints for superconducting sheets

Method for forming welded joints on superconducting foils to form long lengths of foil for use in superconducting magnet tapes including fixturing for controlling the accurate positioning of sheared foils and control of the overlap to be welded.

Superconducting joint for foils used in superconducting magnets

The invention is related to a continuous coating apparatus for applying molten metal on a metal sheet or tape. The apparatus has an annular cylinder having an open lower section extending to a substantially closed upper section. An axle is mounted in the lower section normal to the cylinder axis, and a spool is mounted on the axle. A pair of tubes are mounted parallel to the cylinder axis inside the cylinder on oppositely facing surfaces so that a tape extending around the spool towards the upper section extends through the tubes.

Molten metal coating apparatus

An apparatus for manufacturing embossed foil for use in controlling the flow of the molten metal tin plating provided in forming laminated tape for use in superconducting magnets utilizing meshing knurling rollers with truncated paramydical elements arranged to provide and embossed pattern for uniform and controlled flow of the tin.

Apparatus for embossing superconducting tape for use in a

Apparatus and method for forming long lengths of laminated superconducting tape by passing three foils over idler pulleys, through a solder bath and between pinch rollers having a portion which extend above the solder bath to enable cleaning of the pinch rollers during the formation of the superconducting tape with means to adjust the pressure applied by the pinch rollers, and to adjust the laminated tape takeup tension independently from the foil process tension.

Method and apparatus for laminating foils into a superconducting tape

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Florence, SC, United States of America

Christopher G King