Patents by Inventor Stephen L. Mayers

Stephen L. Mayers 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).

  • Two tier brazing for joining copper tubes to manifolds
    Patent number: 7293689
    Abstract: A brazing process for joining copper and copper alloy tubes to a fitting which includes first forming a layer of a high melting temperature noble metal on one end of a copper or copper alloy tube. The plated end is then brazed to a metal ferrule to form a copper alloy-ferrule assembly. The assembly is then furnace brazed to a metal fitting.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: November 13, 2007
    Assignee: United Technologies Corporation
    Inventor: Stephen L. Mayers
  • Integrally bladed rotor airfoil fabrication and repair techniques
    Patent number: 6787740
    Abstract: The present invention relates to a method for fabricating an integrally bladed rotor which comprises providing a hub section, preferably formed from a titanium based alloy, and welding an airfoil, also preferably formed from a titanium based alloy, to the hub section. The method further comprises partially aging and cooling the hub section prior to welding and aging the airfoil and the weld joint between the airfoil and the hub section subsequent to welding. The post welding aging step is preferably carried out using a novel encapsulated local airfoil heating device having a plurality of heating elements woven into a jacket made from a high temperature cloth material. The method of the present invention may also be used to repair integrally bladed rotors.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: September 7, 2004
    Assignee: United Technologies Corporation
    Inventors: Michael P. Smith, Janet Stanley, David S. Murphy, Robert W. Baumgarten, Thomas DeMichael, Stephen L. Mayers
  • Integrally bladed rotor airfoil fabrication and repair techniques
    Patent number: 6536110
    Abstract: The present invention relates to a method for-fabricating an integrally bladed rotor which comprises providing a hub section, preferably formed from a titanium based alloy, and welding an airfoil, also preferably formed from a titanium based alloy, to the hub section. The method further comprises partially aging and cooling the hub section prior to welding and aging the airfoil and the weld joint between the airfoil and the hub section subsequent to welding. The post welding aging step is preferably carried out using a novel encapsulated local airfoil heating device having a plurality of heating elements woven into a jacket made from a high temperature cloth material. The method of the present invention may also be used to repair integrally bladed rotors.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: March 25, 2003
    Assignee: United Technologies Corporation
    Inventors: Michael P. Smith, Janet Stanley, David S. Murphy, Robert W. Baumgarten, Thomas DeMichael, Stephen L. Mayers
  • INTEGRALLY BLADED ROTOR AIRFOIL FABRICATION AND REPAIR TECHNIQUES
    Publication number: 20030000602
    Abstract: The present invention relates to a method for fabricating an integrally bladed rotor which comprises providing a hub section, preferably formed from a titanium based alloy, and welding an airfoil, also preferably formed from a titanium based alloy, to the hub section. The method further comprises partially aging and cooling the hub section prior to welding and aging the airfoil and the weld joint between the airfoil and the hub section subsequent to welding. The post welding aging step is preferably carried out using a novel encapsulated local airfoil heating device having a plurality of heating elements woven into a jacket made from a high temperature cloth material. The method of the present invention may also be used to repair integrally bladed rotors.
    Type: Application
    Filed: April 17, 2001
    Publication date: January 2, 2003
    Inventors: Michael P. Smith, Janet M. Stanley, David S. Murphy, Robert W. Baumgarten, Thomas DeMichael, Stephen L. Mayers
  • Integrally bladed rotor airfoil fabrication and repair techniques
    Publication number: 20020195176
    Abstract: The present invention relates to a method for fabricating an integrally bladed rotor which comprises providing a hub section, preferably formed from a titanium based alloy, and welding an airfoil, also preferably formed from a titanium based alloy, to the hub section. The method further comprises partially aging and cooling the hub section prior to welding and aging the airfoil and the weld joint between the airfoil and the hub section subsequent to welding. The post welding aging step is preferably carried out using a novel encapsulated local airfoil heating device having a plurality of heating elements woven into a jacket made from a high temperature cloth material. The method of the present invention may also be used to repair integrally bladed rotors.
    Type: Application
    Filed: August 23, 2002
    Publication date: December 26, 2002
    Inventors: Michael P. Smith, Janet M. Stanley, David S. Murphy, Robert W. Baumgarten, Thomas DeMichael, Stephen L. Mayers
  • Paintbrush handle
    Patent number: D367963
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: March 19, 1996
    Inventor: Stephen L. Mayer