Patents by Inventor Richard L. Sharkey

Richard L. Sharkey 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).

  • Sand mold and apparatus for reduced pressure casting
    Patent number: 4606396
    Abstract: Casting metal in rigid, self supporting, gas permeable molds with one or more mold cavities for molding one or more parts, in which the mold cavities have gate passages with their lower open ends at the lower surface of the mold, by submerging the lower ends of the gate passages beneath the surface of molten metal and applying a reduced pressure to the upper surface of the mold to fill the mold cavities with molten metal to produce unconnected metal parts or groups of parts.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: August 19, 1986
    Assignee: Hitchiner Manufacturing Co., Inc.
    Inventors: George D. Chandley, Richard L. Sharkey
  • Method of casting metal in sand mold using reduced pressure
    Patent number: 4340108
    Abstract: Casting metal in rigid, self supporting, gas permeable molds with one or more mold cavities for molding one or more parts, in which the mold cavities have gate passages with their lower open ends at the lower surface of the mold, by submerging the lower ends of the gate passages beneath the surface of molten metal and applying a reduced pressure to the upper surface of the mold to fill the mold cavities with molten metal to produce unconnected metal parts or groups of parts.
    Type: Grant
    Filed: May 29, 1980
    Date of Patent: July 20, 1982
    Assignee: Hitchiner Manufacturing Co., Inc.
    Inventors: George D. Chandley, Richard L. Sharkey