Patents by Inventor Robert E. Schwall
Robert E. Schwall has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6828507Abstract: This invention relates to a practical superconducting conductor based upon biaxially textured high temperature superconducting coatings. In particular, methods for producing flexible and bend strain-resistant articles and articles produced in accordance therewith are described which provide improved current sharing, lower hysteretic losses under alternating current conditions, enhanced electrical and thermal stability and improved mechanical properties between otherwise isolated films in a coated high temperature superconducting (HTS) wire. Multilayered materials including operational material which is sensitive to bend strain can be constructed, in which the bend strain in the region in which such operational material is located is minimized. The invention also provides a means for splicing coated tape segments and for termination of coated tape stack ups or conductor elements.Type: GrantFiled: July 14, 2000Date of Patent: December 7, 2004Assignee: American Superconductor CorporationInventors: Leslie G. Fritzemeier, Cornelis Leo Hans Thieme, Steven Fleshler, John D. Scudiere, Gregory L. Snitchler, Bruce B. Gamble, Robert E. Schwall, Dingan Yu, Alexander Otto, Elliott D. Thompson, Gilbert N. Riley, Jr.
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Patent number: 6812601Abstract: A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.Type: GrantFiled: April 23, 2002Date of Patent: November 2, 2004Assignee: American Superconductor CorporationInventors: Bruce B. Gamble, Ahmed Sidi-Yekhlef, Robert E. Schwall, David I. Driscoll, Boris A. Shoykhet
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Patent number: 6765151Abstract: This invention relates to a practical superconducting conductor based upon biaxially textured high temperature superconducting coatings. In particular, methods for producing flexible and bend strain-resistant articles and articles produced in accordance therewith are described which provide improved current sharing, lower hysteretic losses under alternating current conditions, enhanced electrical and thermal stability and improved mechanical properties between otherwise isolated films in a coated high temperature superconducting (HTS) wire. Multilayered materials including operational material which is sensitive to bend strain can be constructed, in which the bend strain in the region in which such operational material is located is minimized. The invention also provides a means for splicing coated tape segments and for termination of coated tape stack ups or conductor elements.Type: GrantFiled: May 24, 2002Date of Patent: July 20, 2004Assignee: American Superconductor CorporationInventors: Leslie G. Fritzemeier, Cornelis Leo Hans Thieme, Steven Fleshler, John D. Scudiere, Gregory L. Snitchler, Bruce B. Gamble, Robert E. Schwall, Dingan Yu, Alexander Otto, Elliott D. Thompson, Gilbert N. Riley, Jr.
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Publication number: 20030107275Abstract: A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.Type: ApplicationFiled: April 23, 2002Publication date: June 12, 2003Applicants: American Superconductor Corporation, a Delaware corporation, Reliance Electric Industrial CompanyInventors: Bruce B. Gamble, Ahmed Sidi-Yekhlef, Robert E. Schwall, David I. Driscoll, Boris A. Shoykhet
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Publication number: 20020144838Abstract: This invention relates to a practical superconducting conductor based upon biaxially textured high temperature superconducting coatings. In particular, methods for producing flexible and bend strain-resistant articles and articles produced in accordance therewith are described which provide improved current sharing, lower hysteretic losses under alternating current conditions, enhanced electrical and thermal stability and improved mechanical properties between otherwise isolated films in a coated high temperature superconducting (HTS) wire. Multilayered materials including operational material which is sensitive to bend strain can be constructed, in which the bend strain in the region in which such operational material is located is minimized. The invention also provides a means for splicing coated tape segments and for termination of coated tape stack ups or conductor elements.Type: ApplicationFiled: May 24, 2002Publication date: October 10, 2002Applicant: American Superconductor Corporation, a Delaware corporationInventors: Leslie G. Fritzemeier, Cornelis Leo Hans Thieme, Steven Fleshler, John D. Scudiere, Gregory L. Snitchler, Bruce B. Gamble, Robert E. Schwall, Dingan Yu, Alexander Otto, Elliott D. Thompson, Gilbert N. Riley
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Patent number: 6376943Abstract: A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.Type: GrantFiled: August 26, 1998Date of Patent: April 23, 2002Assignee: American Superconductor CorporationInventors: Bruce B. Gamble, Ahmed Sidi-Yekhlef, Robert E. Schwall, David I. Driscoll, Boris A. Shoykhet
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Patent number: 5914647Abstract: A superconducting magnetic coil includes a plurality of sections positioned axially along the longitudinal axis of the coil, each section being formed of an anisotropic high temperature superconductor material wound about a longitudinal axis of the coil and having an associated critical current value that is dependent on the orientation of the magnetic field of the coil. The cross section of the superconductor, or the type of superconductor material, at sections along the axial and radial axes of the coil are changed to provide an increased critical current at those regions where the magnetic field is oriented more perpendicularly to the conductor plane, to thereby increase the critical current at these regions and to maintain an overall higher critical current of the coil.Type: GrantFiled: March 12, 1996Date of Patent: June 22, 1999Assignee: American Superconductor CorporationInventors: Dawood Aized, Robert E. Schwall
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Patent number: 5525583Abstract: A superconducting magnetic coil includes a plurality of sections positioned axially along the longitudinal axis of the coil, each section being formed of an anisotropic high temperature superconductor material wound about a longitudinal axis of the coil and having an associated critical current value that is dependent on the orientation of the magnetic field of the coil. The cross section of the superconductor, or the type of superconductor material, at sections along the axial and radial axes of the coil are changed to provide an increased critical current at those regions where the magnetic field is oriented more perpendicularly to the conductor plane, to thereby increase the critical current at these regions and to maintain an overall higher critical current of the coil.Type: GrantFiled: February 7, 1994Date of Patent: June 11, 1996Assignee: American Superconductor CorporationInventors: Dawood Aized, Robert E. Schwall
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Patent number: 5169805Abstract: In integrated circuit packaging, chips are bonded to one side of an intermediate wafer that is resiliently mounted at the periphery with the entire other side of the intermediate wafer being maintained in conformal thermal transfer to external heat dissipation free of any solid connection.Type: GrantFiled: May 29, 1991Date of Patent: December 8, 1992Assignee: International Business Machines CorporationInventors: Lawrence S. Mok, Robert E. Schwall, Ho-Ming Tong
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Patent number: 5057909Abstract: In integrated circuit packaging, chips are bonded to one side of an intermediate wafer that is resiliently mounted at the periphery with the entire other side of the intermediate wafer being maintained in conformal thermal transfer to external heat dissipation free of any solid connection.Type: GrantFiled: January 28, 1991Date of Patent: October 15, 1991Assignee: International Business Machines CorporationInventors: Lawrence S. Mok, Robert E. Schwall, Ho-Ming Tong
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Patent number: 4970868Abstract: The superior thermal conductivity of immersion cooling combined with the service convenience of conduction cooling is provided through the use of unitary thermal transfer replaceable units positioned beneath a refrigeration source. Each unit contains electronic devices in a thermal transfer fluid. The unit construction permits replaceability in service without exposing a central fluid reservoir or opening a refrigerator.Type: GrantFiled: June 23, 1989Date of Patent: November 20, 1990Assignee: International Business Machines CorporationInventors: Kurt R. Grebe, Robert E. Schwall, Ho-Ming Tong
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Patent number: 4689707Abstract: A superconductive magnet has a main coil for creating a primary magnetic field and a plurality of shim coils for correcting aberrations in different gradients in the primary field. The shim coils are also connected in shunt with shim quench heaters and with superconductors which together with the shim coils form a plurality of persistent loops. A plurality of protective heaters are electrically connected to the main coil and are thermally connected to the superconductors. When quenching begins in the main coil, current is diverted through the protective heaters causing them to heat. This increases the temperature of the superconductors in the persistent loops causing them to switch from the superconductive to the resistive state and divert current into the shim quench heaters. These heaters in turn heat the shim coils and drive the shim coils resistive to safety dissipate any energy therein.Type: GrantFiled: May 27, 1986Date of Patent: August 25, 1987Assignee: International Business Machines CorporationInventor: Robert E. Schwall