Patents by Inventor Larry Keith

Larry Keith 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).

  • Metallic extrusion processing elements
    Patent number: 9339947
    Abstract: A restored metallic extrusion processing element comprises a tubular metal core around which is consolidated a powdered metal extrusion component that includes metallurgically bonded interior shell and exterior working portions. The interior shell portion covers the core and is characterized by a first multiple-crystalline microstructure, and the exterior working portion is characterized by a second multiple crystalline microstructure of densified powdered metal particles. The exterior working portion has an outside surface including outer working surface features that extend along the length of the extrusion processing element. A bond interface of metallurgical type defines a crystalline microstructure boundary between the first and second multiple-crystalline microstructures.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: May 17, 2016
    Assignee: Entek Manufacturing LLC
    Inventors: Craig Benjamin, Larry Keith
  • METALLIC EXTRUSION PROCESSING ELEMENTS
    Publication number: 20140069778
    Abstract: A restored metallic extrusion processing element comprises a tubular metal core around which is consolidated a powdered metal extrusion component that includes metallurgically bonded interior shell and exterior working portions. The interior shell portion covers the core and is characterized by a first multiple-crystalline microstructure, and the exterior working portion is characterized by a second multiple crystalline microstructure of densified powdered metal particles. The exterior working portion has an outside surface including outer working surface features that extend along the length of the extrusion processing element. A bond interface of metallurgical type defines a crystalline microstructure boundary between the first and second multiple-crystalline microstructures.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: Entek Manufacturing LLC
    Inventors: Craig Benjamin, Larry Keith
  • Restoration of worn metallic extrusion processing elements
    Patent number: 8595910
    Abstract: A restored metallic extrusion processing element comprises a tubular metal core around which is consolidated a powdered metal extrusion component that includes metallurgically bonded interior shell and exterior working portions. The interior shell portion covers the core and is characterized by a first multiple-crystalline microstructure, and the exterior working portion is characterized by a second multiple crystalline microstructure of densified powdered metal particles. The exterior working portion has an outside surface including outer working surface features that extend along the length of the extrusion processing element. A bond interface of metallurgical type defines a crystalline microstructure boundary between the first and second multiple-crystalline microstructures.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 3, 2013
    Assignee: Entek Manufacturing LLC
    Inventors: Craig Benjamin, Larry Keith
  • RESTORATION OF WORN METALLIC EXTRUSION PROCESSING ELEMENTS
    Publication number: 20110317510
    Abstract: A restored metallic extrusion processing element comprises a tubular metal core around which is consolidated a powdered metal extrusion component that includes metallurgically bonded interior shell and exterior working portions. The interior shell portion covers the core and is characterized by a first multiple-crystalline microstructure, and the exterior working portion is characterized by a second multiple crystalline microstructure of densified powdered metal particles. The exterior working portion has an outside surface including outer working surface features that extend along the length of the extrusion processing element. A bond interface of metallurgical type defines a crystalline microstructure boundary between the first and second multiple-crystalline microstructures.
    Type: Application
    Filed: June 23, 2010
    Publication date: December 29, 2011
    Applicant: Entek Manufacturing, Inc.
    Inventors: Craig Benjamin, Larry Keith