Patents by Inventor F. Michael Hosking

F. Michael Hosking 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: 7084366
    Abstract: A method for making a braze joint across a discontinuity in a work piece using alternating current. A filler metal is pre-placed at a location sufficiently close to the discontinuity such that, when an alternating current is applied across a work piece to heat the work piece and melt the filler metal, the filler metal is drawn into the discontinuity. The alternating current is maintained for a set residence time, generally less than 10 seconds and more particularly less than 3 seconds. The alternating current is then altered, generally by reducing the current and/or voltage such that the filler metal can solidify to form a braze joint of desired quality and thickness.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: August 1, 2006
    Assignee: Sandia Corporation
    Inventors: F. Michael Hosking, Aaron C. Hall, Richard C. Givler, Charles A. Walker
  • Patent number: 6936218
    Abstract: The present invention relates to a silver braze alloy having improved wetting properties. The silver braze alloy consists essentially of from about 52.25 wt % to about 57.0 wt % silver, from about 38.95 to about 43.0 wt % copper, from about 0.5 wt % to about 5.5 wt %, preferably from about 1.0 wt % to about 5.5 wt %, manganese, and up to about 2.5 wt %, preferably from about 1.5 wt % to about 2.5 wt %, nickel. The alloy further may contain 0.15 wt % total of other trace elements.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: August 30, 2005
    Assignee: United Technologies Corporation
    Inventors: Wangen Lin, Brian Schwartz, Viktor Fedorovich Khorunov, F. Michael Hosking, Svitlana Vasylivna Maksymova
  • Patent number: 6663982
    Abstract: A binary allow braze composition has been prepared and used in a bonded article of ceramic-ceramic and ceramic-metal materials. The braze composition comprises greater than approximately 95 wt % silver, greater than approximately 2 wt % hafnium and less than approximately 4.1 wt % hafnium, and less than approximately 0.2 wt % trace elements. The binary braze alloy is used to join a ceramic material to another ceramic material or a ceramic material, such as alumina, quartz, aluminum nitride, silicon nitride, silicon carbide, and mullite, to a metal material, such as iron-based metals, cobalt-based metals, nickel-based metals, molybdenum-based metals, tungsten-based metals, niobium-based metals, and tantalum-based metals. A hermetic bonded article is obtained with a strength greater than 10,000 psi.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: December 16, 2003
    Assignee: Sandia Corporation
    Inventors: John J. Stephens, Jr., F. Michael Hosking, Frederick G. Yost
  • Publication number: 20030180176
    Abstract: The present invention relates to a silver braze alloy having improved wetting properties. The silver braze alloy consists essentially of from about 52.25 wt % to about 57.0 wt % silver, from about 38.95 to about 43.0 wt % copper, from about 0.5 wt % to about 5.5 wt %, preferably from about 1.0 wt % to about 5.5 wt %, manganese, and up to about 2.5 wt %, preferably from about 1.5 wt % to about 2.5 wt %, nickel. The alloy further may contain 0.15 wt % total of other trace elements.
    Type: Application
    Filed: April 15, 2003
    Publication date: September 25, 2003
    Inventors: Wangen Lin, Brian Schwartz, Viktor Fedorovich Khorunov, F. Michael Hosking, Svitlana Vasylivna Maksymova
  • Patent number: 6596229
    Abstract: The present invention relates to a silver braze alloy having improved wetting properties. The silver braze alloy consists essentially of from about 52.25 wt % to about 57.0 wt % silver, from about 38.95 to about 43.0 wt % copper, from about 0.5 wt % to about 5.5 wt %, preferably from about 1.0 wt % to about 5.5 wt %, manganese, and up to about 2.5 wt %, preferably from about 1.5 wt % to about 2.5 wt %, nickel. The alloy further may contain 0.15 wt % total of other trace elements.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: July 22, 2003
    Assignee: United Technologies Corporation
    Inventors: Wangen Lin, Brian Schwartz, Viktor Fedorovich Khorunov, F. Michael Hosking, Svitlana Vasylivna Maksymova
  • Patent number: 6581438
    Abstract: A capillary test specimen, method, and system for visualizing and quantifying capillary flow of liquids under realistic conditions, including polymer underfilling, injection molding, soldering, brazing, and casting. The capillary test specimen simulates complex joint geometries and has an open cross-section to permit easy visual access from the side. A high-speed, high-magnification camera system records the location and shape of the moving liquid front in real-time, in-situ as it flows out of a source cavity, through an open capillary channel between two surfaces having a controlled capillary gap, and into an open fillet cavity, where it subsequently forms a fillet on free surfaces that have been configured to simulate realistic joint geometries. Electric resistance heating rapidly heats the test specimen, without using a furnace.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: June 24, 2003
    Assignee: Sandia Corporation
    Inventors: Aaron C. Hall, F. Michael Hosking, Mark Reece
  • Patent number: 6528123
    Abstract: This invention relates to a method for preparing the surface of a ceramic component that enables direct brazing using a non-active braze alloy. The present invention also relates to a method for directly brazing a ceramic component to a ceramic or metal member using this method of surface preparation, and to articles produced by using this brazing method. The ceramic can be high purity alumina. The method comprises applying a first coating of a silicon-bearing oxide material (e.g. silicon dioxide or mullite (3Al2O3.2SiO2) to the ceramic. Next, a thin coating of active metal (e.g. Ti or V) is applied. Finally, a thicker coating of a non-active metal (e.g. Au or Cu) is applied. The coatings can be applied by physical vapor deposition (PVD). Alternatively, the active and non-active metals can be co-deposited (e.g. by sputtering a target made of mullite).
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: March 4, 2003
    Assignee: Sandia Corporation
    Inventors: Charles H. Cadden, F. Michael Hosking
  • Publication number: 20020085944
    Abstract: The present invention relates to a silver braze alloy having improved wetting properties. The silver braze alloy consists essentially of from about 52.25 wt % to about 57.0 wt % silver, from about 38.95 to about 43.0 wt % copper, from about 0.5 wt % to about 5.5 wt %, preferably from about 1.0 wt % to about 5.5 wt %, manganese, and up to about 2.5 wt %, preferably from about 1.5 wt % to about 2.5 wt %, nickel. The alloy further may contain 0.15 wt % total of other trace elements.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 4, 2002
    Inventors: Wangen Lin, Brian Schwartz, Viktor Fedorovich Khorunov, F. Michael Hosking, Svitlana Vasylivna Maksymova