John D Scudiere

US Patent:

6360425, Mar 26, 2002

Filed:

Sep 8, 1994

Appl. No.:

08/302601

Inventors:

Craig John Christopherson - Grafton MA
John Scudiere - Bolton MA

Assignee:

American Superconductor Corp. - Westborough MA

International Classification:

H01L 3924

US Classification:

29599, 505100, 505230, 505231

Abstract:

A method of texturing a multifilamentary article having filaments comprising a desired oxide superconductor or its precursors by torsionally deforming the article is provided. The texturing is induced by applying a torsional strain which is at least about 0. 3 and preferably at least about 0. 6 at the surface of the article, but less than the strain which would cause failure of the composite. High performance multifilamentary superconducting composite articles having a plurality of low aspect ratio, twisted filaments with substantially uniform twist pitches in the range of about 1. 00 inch to 0. 01 inch (25 to 0. 25 mm), each comprising a textured desired superconducting oxide material, may be obtained using this texturing method. If tighter twist pitches are desired, the article may be heat treated or annealed and the strain repeated as many times as necessary to obtain the desired twist pitch. It is preferred that the total strain applied per step should be sufficient to provide a twist pitch tighter than 5 times the diameter of the article, and twist pitches in the range of 1 to 5 times the diameter of the article are most preferred.

US Patent:

6444917, Sep 3, 2002

Filed:

Jul 23, 1999

Appl. No.:

09/360318

Inventors:

John D. Scudiere - Bolton MA
David M. Buczek - Dover MA
Steven Fleshler - Brookline MA
Derek Patrick Daly - Sharon MA
Richard E. Harnois - Wrentham MA
Stephen R. Norman - Hampshire, GB
Paola Caracino - Milan, IT
Marco Nassi - Torino, IT
Sergio Spreafico - Albavilla, IT

Assignee:

American Superconductor Corporation - Westborough MA
Pirelli Cavi e Sistemi S.p.A. - Milano

International Classification:

H01B 1200

US Classification:

1741251, 505885, 505237

Abstract:

The invention features a superconducting conductor for use in a preselected fluid cryogen including a composite ceramic superconducting wire having an outer surface along its length; and a sealing structure hermetically surrounding the outer surface to prevent the cryogen from infiltrating into the wire and degrading its superconducting properties, even under pressurized conditions. The superconducting conductor can be used in superconducting cabling and coil applications. The sealing structure can be formed by laminating metallic tapes to the wire, encircling at least one metallic sheet around the outer surface of the wire, welding a plurality of metallic sheets to one another to encircle the outer surface of the wire, or forming a polymer coating completely covering the outer surface of the wire.

US Patent:

6649280, Nov 18, 2003

Filed:

Feb 4, 2000

Appl. No.:

09/498551

Inventors:

John D. Scudiere - Bolton MA
David M. Buczek - Needham MA

Assignee:

American Superconductor Corporation - Westborough MA

International Classification:

B32B 1520

US Classification:

428632, 428674, 428684, 428930, 505230, 505236

Abstract:

A high performance superconducting ceramic article for use in a liquid cryogen bath is provided. It includes a superconducting ceramic tape having at least one surface vulnerable to cryogenic infiltration is sealed on each vulnerable surface to a non-porous metallic laminate, which also provides the desired support structure, in substantially impervious relation by a non-porous metallic bonding agent. This results in greater protection of the superconducting ceramic tape from cryogen infiltration, and permits greater thermal cycling of the superconductor during use without causing degradation of the tapes critical current carrying capacity.

US Patent:

6745059, Jun 1, 2004

Filed:

Nov 28, 2001

Appl. No.:

09/995442

Inventors:

David M. Buczek - Dover MA
John D. Scudiere - Bolton MA
Leslie G. Fritzemeier - Mendon MA

Assignee:

American Superconductor Corporation - Westborough MA

International Classification:

H01B 1200

US Classification:

505230, 505235

Abstract:

Superconducting cables and magnetic devices are disclosed.

US Patent:

6765151, Jul 20, 2004

Filed:

May 24, 2002

Appl. No.:

10/154566

Inventors:

Leslie G. Fritzemeier - Mendon MA
Cornelis Leo Hans Thieme - Westborough MA
Steven Fleshler - Brookline MA
John D. Scudiere - Bolton MA
Gregory L. Snitchler - Shrewsbury MA
Bruce B. Gamble - Wellesley MA
Robert E. Schwall - Northborough MA
Dingan Yu - Worcester MA
Alexander Otto - Chelmsford MA
Elliott D. Thompson - Coventry RI

Assignee:

American Superconductor Corporation - Westborough MA

International Classification:

H01B 1200

US Classification:

1741251, 174 155, 505231, 505236

Abstract:

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. In one embodiment, a multi-layer high temperature superconductor is provided and includes first and second high temperature superconductor coated elements.

US Patent:

6828507, Dec 7, 2004

Filed:

Jul 14, 2000

Appl. No.:

09/617518

Inventors:

Leslie G. Fritzemeier - Mendon MA
Cornelis Leo Hans Thieme - Westborough MA
Steven Fleshler - Brookline MA
John D. Scudiere - Bolton MA
Gregory L. Snitchler - Shrewsbury MA
Bruce B. Gamble - Wellesley MA
Robert E. Schwall - Northborough MA
Dingan Yu - Worcester MA
Alexander Otto - Chelmsford MA
Elliott D. Thompson - Coventry RI

Assignee:

American Superconductor Corporation - Westborough MA

International Classification:

H01B 1200

US Classification:

1741251, 505231, 505237, 505926

Abstract:

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. In one embodiment, a multi-layer high temperature superconductor is provided and includes first and second high temperature superconductor coated elements.

US Patent:

6943656, Sep 13, 2005

Filed:

May 25, 2004

Appl. No.:

10/853547

Inventors:

David M. Buczek - Dover MA, US
John D. Scudiere - Bolton MA, US
Leslie G. Fritzemeier - Mendon MA, US

Assignee:

American Semiconductor Corporation - Westborough MA

International Classification:

H01F006/00

US Classification:

335216, 505235

Abstract:

Superconducting cables and magnetic devices are disclosed.

US Patent:

7106156, Sep 12, 2006

Filed:

Apr 12, 2005

Appl. No.:

11/104194

Inventors:

David M. Buczek - Dover MA, US
John D. Scudiere - Bolton MA, US
Leslie G. Fritzemeier - Mendon MA, US

Assignee:

American Superconductor Corporation - Westborough MA

International Classification:

H01F 1/00

US Classification:

335216, 335219, 335299

Abstract:

Superconducting cables and magnetic devices are disclosed.