Patents by Inventor T. Dwayne McCay

T. Dwayne McCay 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: 6660962
    Abstract: This invention relates to a method for gas assisted energy beam engraving of a target object. This invention employs and energy beam, such as a laser beam or an electron beam, to irradiate a target object in the presence of a selected gaseous environment in order to engrave a mark in the object.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: December 9, 2003
    Assignee: The University of Tennessee Research Corporation
    Inventors: Mary Helen McCay, C. Michael Sharp, John Brice Bible, John A. Hopkins, T. Dwayne McCay, Narendra Dahotre, Frederick A. Schwartz
  • Patent number: 6497985
    Abstract: The present invention relates to a method for marking metallic alloys using laser alloying. Specifically, the present invention is directed toward the use of laser alloying steel or aluminum alloys with a mark that provides protection against wear and corrosion and greater permanency.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: December 24, 2002
    Assignee: University of Tennessee Research Corporation
    Inventors: Mary Helen McCay, T. Dwayne McCay, John A. Hopkins, Narendra B. Dahotre, C. Michael Sharp, John Brice Bible, Frederick A. Schwartz
  • Publication number: 20020190036
    Abstract: This invention relates to a method for gas assisted energy beam engraving of a target object. This invention employs and energy beam, such as a laser beam or an electron beam, to irradiate a target object in the presence of a selected gaseous environment in order to engrave a mark in the object.
    Type: Application
    Filed: July 30, 2002
    Publication date: December 19, 2002
    Inventors: Mary Helen McCay, C. Michael Sharp, John Brice Bible, John A. Hopkins, T. Dwayne McCay, Narendra Dahotre, Frederick A. Schwartz
  • Patent number: 6423162
    Abstract: This invention relates to a method of using a laser to produce a decorative appearance on the surface of a bumper. More specifically, the present invention relates to a laser alloying method to create a decorative alloyed layer on the surface of a bumper.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: July 23, 2002
    Assignee: The University of Tennesse Research Corporation
    Inventors: Frederick A. Schwartz, Mary Helen McCay, T. Dwayne McCay, Narendra B. Dahotre, John Brice Bible, John A. Hopkins
  • Patent number: 6350326
    Abstract: This invention is directed toward a method of calculating the total laser energy needed to produce one or more selected laser induced surface modification reactions in a substrate moving relative to a laser beam. The present invention is further directed to a method for programming a programmable feedback control system with the calculated total laser energy such that the control system may be used to control laser beam power level and beam width in a process for producing a laser induced surface modification.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: February 26, 2002
    Assignee: The University of Tennessee Research Corporation
    Inventors: T. Dwayne McCay, Mary Helen McCay, Narendra B. Dahotre
  • Publication number: 20010036587
    Abstract: The present invention relates to a method for marking metallic alloys using laser alloying. Specifically, the present invention is directed toward the use of laser alloying steel or aluminum alloys with a mark that provides protection against wear and corrosion and greater permanency.
    Type: Application
    Filed: June 9, 1999
    Publication date: November 1, 2001
    Inventors: MARY HELEN MCCAY, T. DWAYNE MCCAY, JOHN A. HOPKINS, NARENDRA B. DAHOTRE, C. MICHAEL SHARP, JOHN BRICE BIBLE, FREDERICK A. SCHWARTZ
  • Publication number: 20010027965
    Abstract: This invention relates to a method for gas assisted energy beam engraving of a target object. This invention employs and energy beam, such as a laser beam or an electron beam, to irradiate a target object in the presence of a selected gaseous environment in order to engrave a mark in the object.
    Type: Application
    Filed: June 4, 2001
    Publication date: October 11, 2001
    Inventors: Mary Helen McCay, C. Michael Sharp, John Brice Bible, John A. Hopkins, T. Dwayne McCay, Narendra Dahotre, Frederick A. Schwartz
  • Patent number: 6299707
    Abstract: This invention is directed toward a method for enhancing the wear resistance of an aluminum cylinder bore comprising laser alloying of the cylinder bore with selected precursors. The present invention is particularly well suited for enhancing the wear resistance caused by corrosion in an aluminum block engine comprising aluminum cylinder bores.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: October 9, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Mary Helen McCay, T. Dwayne McCay, John A. Hopkins, Narendra B. Dahotre, Frederick A. Schwartz, John Brice Bible
  • Patent number: 6294225
    Abstract: This invention relates to a method of improving the corrosion and wear resistance of a transport trailer surface. More specifically the present invention relates to a method of laser alloying the surface of a transport trailer to enhance the corrosion and wear resistant properties of the surface.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: September 25, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Mary Helen McCay, T. Dwayne McCay, John A. Hopkins, Narendra B. Dahotre, Frederick A. Schwartz, John Brice Bible
  • Patent number: 6284067
    Abstract: This invention relates to a method of using a laser to produce alloyed bands or strips on the surface of a piston for an internal combustion engine. More specifically, the present invention relates to a laser alloying method to produce superior wear resistant properties for an aluminum internal combustion engine piston.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: September 4, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Frederick A. Schwartz, Mary Helen McCay, T. Dwayne McCay, Narendra B. Dahotre, John Brice Bible, John A. Hopkins
  • Patent number: 6229111
    Abstract: The present invention is directed toward a method for plasma assisted laser surface alloying. Specifically, the present invention is directed toward a method for surface alloying using a laser beam having a rectangular cross sectional area and a plasma arc, in order to produce an alloyed substrate on the surface of the material.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: May 8, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Mary Helen McCay, T. Dwayne McCay, John A. Hopkins, Narendra B. Dahotre, C. Michael Sharp, Frederick A. Schwartz, John Brice Bible
  • Patent number: 6223137
    Abstract: The present invention relates to a method for marking, tracking, and managing hospital instruments. Specifically, the present invention relates to a method for marking instruments with information indicative of the manufacturer, part number, and serial number of each instrument, inputting such information into a database, inputting information into the database regarding the desired maintenance schedule for each instrument, inputting information into the database regarding the usage of each instrument, and tracking the usage and/or maintenance of each instrument by using the information in the database. The method also includes asset management, instrumentation identification and counting, and assembly of surgical trays and kits.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: April 24, 2001
    Assignee: The University of Tennessee Research Corporation
    Inventors: Mary Helen McCay, T. Dwayne McCay, John A. Hopkins, John Brice Bible, Frederick A. Schwartz, Narendra B. Dahotre, C. Michael Sharp
  • Patent number: 6173886
    Abstract: The present invention relates to an improved method for joining metals or alloys together. Specifically, the present invention relates to a method comprising the laser alloying of a first metal/alloy piece so that it can be joined with a second metal/alloy piece of a nonidentical composition.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: January 16, 2001
    Assignee: The University of Tennessee Research Corportion
    Inventors: Mary Helen McCay, T. Dwayne McCay, Narendra B. Dahotre, John A. Hopkins, Frederick A. Schwartz, John Brice Bible
  • Patent number: 5503703
    Abstract: A process for joining ceramic or ceramic and metal bodies is disclosed. The process involves using an interlayer of a mixture of two materials and reacting the materials with laser irradiation to form a thermally stable compound suitable for bonding the bodies together.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: April 2, 1996
    Inventors: Narendra B. Dahotre, Mary H. McCay, T. Dwayne McCay