Patents by Inventor W. Denis Markiewicz

W. Denis Markiewicz 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).

  • Patent number: 7649720
    Abstract: A method of constructing a superconducting coil. The method includes embedding a plurality of heater elements throughout a superconducting coil. The heater elements are positioned according to a predetermined distribution and substantially in thermal contact with the coil for heating the coil in response to a quench condition. Other aspects of the invention involve an active protection circuit and a high temperature superconductor magnet that includes such an active protection circuit for internally dissipating stored magnetic energy in the event of a quench.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: January 19, 2010
    Assignee: Florida State University Research Foundation, Inc.
    Inventor: W. Denis Markiewicz
  • Patent number: 7015779
    Abstract: A wide bore, high field superconducting magnet. The superconducting magnet has a plurality of superconducting coils impregnated with epoxy and nested within each other. An innermost one of the nested coils has a bore therethrough that defines a bore width of the magnet. The bore width is greater than approximately 100 millimeters. The nested coils are electrically connected in series and cooled to an operating temperature less than approximately 4 degrees K. The magnet also has external reinforcements on the coils that are applied prior to impregnating the coils with epoxy. An active protection circuit protects the coils in response to a quench in the magnet. The protection circuit includes heater elements positioned in thermal contact with the coils prior to impregnating the coils with epoxy. The magnet further has lead supports for supporting the lead wires with epoxy that extend from the coils.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: March 21, 2006
    Assignee: Florida State University
    Inventors: W. Denis Markiewicz, Iain R. Dixon, Charles A. Swenson, W. Scott Marshall, Robert P. Walsh, Thomas Painter, Steven van Sciver
  • Publication number: 20040162222
    Abstract: A wide bore, high field superconducting magnet. The superconducting magnet has a plurality of superconducting coils impregnated with epoxy and nested within each other. An innermost one of the nested coils has a bore therethrough that defines a bore width of the magnet. The bore width is greater than approximately 100 millimeters. The nested coils are electrically connected in series and cooled to an operating temperature less than approximately 4 degrees K. The magnet also has external reinforcements on the coils that are applied prior to impregnating the coils with epoxy. An active protection circuit protects the coils in response to a quench in the magnet. The protection circuit includes heater elements positioned in thermal contact with the coils prior to impregnating the coils with epoxy. The magnet further has lead supports for supporting the lead wires with epoxy that extend from the coils.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 19, 2004
    Applicant: Florida State University Research Foundation
    Inventors: W. Denis Markiewicz, Iain R. Dixon, Charles A. Swenson, W. Scott Marshall, Robert P. Walsh, Thomas Painter, Steven van Sciver
  • Patent number: 6735848
    Abstract: Method of manufacture a wide bore, high field superconducting magnet. The superconducting magnet has a plurality of superconducting coils impregnated with epoxy and nested within each other. An innermost one of the nested coils has a bore therethrough that defines a bore width of the magnet. The bore width is greater than approximately 100 millimeters. The nested coils are electrically connected in series and cooled to an operating temperature less than approximately 4 degrees K. The magnet also has external reinforcements on the coils that are applied prior to impregnating the coils with epoxy. An active protection circuit protects the coils in response to a quench in the magnet. The protection circuit includes heater elements positioned in thermal contact with the coils prior to impregnating the coils with epoxy. The magnet further has lead supports for supporting the lead wires with epoxy that extend from the coils.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: May 18, 2004
    Assignee: FSU Research Foundation, Inc.
    Inventors: W. Denis Markiewicz, Iain R. Dixon, Charles A. Swenson, W. Scott Marshall, Robert P. Walsh, Thomas Painter, Steven van Van Sciver
  • Patent number: 4978936
    Abstract: A superconducting magnetic element is provided wherein the terminals are bonded to the coil body and are independent of that coil body supporting structure. The technology employs a terminal structure with a supporting base member surrounding a conductor terminal end portion positioned on a surface of an impregnated coil body and integrally bonded thereto. The terminal structure in turn permits freedom in manufacturing to employ all useful strategies in accommodating physical properties of different materials.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: December 18, 1990
    Assignee: Intermagnetics General Corporation
    Inventors: W. Denis Markiewicz, Gary Ciancetta, Philip Jonas