Patents by Inventor Maria A. Herring

Maria A. Herring 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).

  • Investment casting
    Patent number: 7201212
    Abstract: A method and apparatus are used to cast a number of elements such as turbine engine blades. The blades have an airfoil and a root for securing the blade to a disk. A number of mold sections each have internal surfaces for forming an associated at least one of the elements. The mold sections are assembled and molten alloy is introduced to the assembled mold sections.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 10, 2007
    Assignee: United Technologies Corporation
    Inventors: Steven J. Bullied, Maria A. Herring, W. Samuel Krotzer, Jr., Stephen D. Murray
  • Shelling apparatus and methods for investment casting
    Patent number: 7021362
    Abstract: An apparatus for shelling an investment casting pattern has a tank containing a coating material. There are means for holding the pattern immersed in the coating material. There may be means for vibrating the pattern during immersion of the pattern and a vacuum source coupled to the tank to withdraw air from at least one headspace of the tank.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: April 4, 2006
    Assignee: United Technologies Corporation
    Inventors: John J. Marcin, Jr., Stephen D. Murray, Carl R. Verner, Maria A. Herring, Lea D. Kennard, Donald D. Schofield, Richard L. Ritchie, Reade R. Clemens, Michael K. Turkington, Delwyn E. Norton
  • Shelling apparatus and methods for investment casting
    Publication number: 20050274482
    Abstract: An apparatus for shelling an investment casting pattern has a tank containing a coating material. There are means for holding the pattern immersed in the coating material. There may be means for vibrating the pattern during immersion of the pattern and a vacuum source coupled to the tank to withdraw air from at least one headspace of the tank.
    Type: Application
    Filed: August 17, 2005
    Publication date: December 15, 2005
    Inventors: John Marcin, Stephen Murray, Carl Verner, Maria Herring, Lea Kennard, Donald Schofield, Richard Ritchie, Reade Clemens, Michael Turkington, Delwyn Norton
  • Shelling apparatus and methods for investment casting
    Patent number: 6966354
    Abstract: An apparatus for shelling an investment casting pattern has a tank containing a coating material. There are means for holding the pattern immersed in the coating material. There may be means for vibrating the pattern during immersion of the pattern and a vacuum source coupled to the tank to withdraw air from at least one headspace of the tank.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: November 22, 2005
    Assignee: United Technologies Corporation
    Inventors: John J. Marcin, Jr., Stephen D. Murray, Carl R. Verner, Maria A. Herring, Lea D. Kennard, Donald D. Schofield, Richard L. Ritchie, Reade R. Clemens, Michael K. Turkington, Delwyn E. Norton
  • Shelling apparatus and methods for investment casting
    Publication number: 20050121167
    Abstract: An apparatus for shelling an investment casting pattern has a tank containing a coating material. There are means for holding the pattern immersed in the coating material. There may be means for vibrating the pattern during immersion of the pattern and a vacuum source coupled to the tank to withdraw air from at least one headspace of the tank.
    Type: Application
    Filed: December 5, 2003
    Publication date: June 9, 2005
    Inventors: John Marcin, Stephen Murray, Carl Verner, Maria Herring, Lea Kennard, Donald Schofield, Richard Ritchie, Reade Clemens, Michael Turkington, Delwyn Norton
  • Investment casting
    Publication number: 20050045301
    Abstract: A method and apparatus are used to cast a number of elements such as turbine engine blades. The blades have an airfoil and a root for securing the blade to a disk. A number of mold sections each have internal surfaces for forming an associated at least one of the elements. The mold sections are assembled and molten alloy is introduced to the assembled mold sections.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 3, 2005
    Inventors: Steven Bullied, Maria Herring, W. Krotzer, Stephen Murray