Patents by Inventor Raymond Paul Langevin

Raymond Paul Langevin 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).

  • Crack free metallic articles
    Patent number: 6103402
    Abstract: A containerless method of producing a crack free metallic article of near-net shape includes melting a filler material into a metallic substrate or seed under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large beam diameter at the substrate surface for an extended length of time to produce a molten pool with a low aspect ratio. Near-net shape is achieved by applying the process in a closed-loop, multi-axis material deposition system.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: August 15, 2000
    Assignee: United Technologies Corporation
    Inventors: John Joseph Marcin, Jr., Justin Andreas Neutra, David Henry Abbott, James Peter Aduskevich, Dilip M. Shah, Dorothea Nadette Carraway, Raymond Paul Langevin, Marc R. Sauerhoefer, Richard Alan Stone
  • Method of repairing metallic articles by energy beam deposition with reduced power density
    Patent number: 5914059
    Abstract: A filler material is melted into a metallic substrate having a defect under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large diameter for an extended length of time to produce a molten pool with a low aspect ratio.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: June 22, 1999
    Assignee: United Technologies Corporation
    Inventors: John Joseph Marcin, Jr., Justin Andreas Neutra, David Henry Abbott, James Peter Aduskevich, Dilip M. Shah, Dorothea Nadette Carraway, Raymond Paul Langevin, Marc R. Sauerhoefer, Richard Alan Stone
  • Containerless method of producing crack free metallic articles by energy beam deposition with reduced power density
    Patent number: 5900170
    Abstract: A containerless method of producing a crack free metallic article of near-net shape includes melting a filler material into a metallic substrate or seed under conditions chosen to preclude cracking. In a preferred embodiment of the invention, a laser beam is operated at a relatively low power density and at a relatively large beam diameter at the substrate surface for an extended length of time to produce a molten pool with a low aspect ratio. Near-net shape is achieved by applying the process in a closed-loop, multi-axis material deposition system.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: May 4, 1999
    Assignee: United Technologies Corporation
    Inventors: John Joseph Marcin, Jr., Justin Andreas Neutra, David Henry Abbott, James Peter Aduskevich, Dilip M. Shah, Dorothea Nadette Carraway, Raymond Paul Langevin, Marc R. Sauerhoefer, Richard Alan Stone