Patents by Inventor Alain Demers

Alain Demers 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).

  • SEALING MEANS BETWEEN ROTOR AND HOUSING IN A WATER TURBINE
    Publication number: 20100092279
    Abstract: A reaction water turbine including: a rotor having an axis of rotation and an radially outer surface; a housing surrounding the rotor and having a bearing support proximate to the radially outer surface of the rotor; and a seal mounted to the bearing support on the housing, the seal includes a brush seal extending to and bearing against the radially outer surface of the rotor.
    Type: Application
    Filed: June 25, 2007
    Publication date: April 15, 2010
    Applicant: ANDRITZ TECHNOLOGY AND ASSET MANAGEMENT GMBH
    Inventors: Alain Demers, Anders Wedmark
  • Erosion resistant coatings and methods thereof
    Patent number: 7431566
    Abstract: Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: October 7, 2008
    Assignee: General Electric Company
    Inventors: Dennis Michael Gray, Krishnamurthy Anand, Warren Arthur Nelson, Hans Aunemo, Alain Demers, Olav Rommetveit
  • Erosion resistant coatings and methods thereof
    Publication number: 20070031702
    Abstract: Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.
    Type: Application
    Filed: October 12, 2006
    Publication date: February 8, 2007
    Inventors: Dennis Gray, Krishnamurthy Anand, Warren Nelson, Hans Aunemo, Alain Demers, Olav Rommetveit
  • Erosion resistant coatings and methods thereof
    Patent number: 7141110
    Abstract: Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: November 28, 2006
    Assignee: General Electric Company
    Inventors: Dennis Michael Gray, Krishnamurthy Anand, Warren Arthur Nelson, Hans Aunemo, Alain Demers, Olav Rommetveit
  • Erosion resistant coatings and methods thereof
    Publication number: 20050112411
    Abstract: Erosion resistant coating processes and material improvements for line-of-sight applications. The erosion resistant coating composition includes nanostructured grains of tungsten carbide (WC) and/or submicron sized grains of WC embedded into a cobalt chromium (CoCr) binder matrix. A high velocity air fuel thermal spray process (HVAF) is used to create thick coatings in excess of about 500 microns with high percentages of primary carbide for longer life better erosion resistant coatings. These materials and processes are especially suited for hydroelectric turbine components.
    Type: Application
    Filed: December 31, 2003
    Publication date: May 26, 2005
    Inventors: Dennis Gray, Krishnamurthy Anand, Warren Nelson, Hans Aunemo, Alain Demers, Olav Rommetveit
  • Erosion resistant coatings and methods thereof
    Publication number: 20050112399
    Abstract: Erosion resistant coating compositions include hard particles in a metal matrix such as nickel-based, cobalt-based and iron-based matrices applied by a plating process for complex geometry or hard to access component surfaces or by thermal spray processes for line of sight applications. These materials and processes are especially suited for providing erosion resistance to hydroelectric turbine components.
    Type: Application
    Filed: March 31, 2004
    Publication date: May 26, 2005
    Inventors: Dennis Gray, Krishnamurthy Anand, Hans Aunemo, Alain Demers, Timothy Dumm, Kanchan Kumari, Warren Nelson, Olav Rommetveit, Steven Tysoe