Patents by Inventor Frederick J. Horrocks

Frederick J. Horrocks 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).

  • Method of and mould for making a cast single crystal
    Patent number: 4469161
    Abstract: A method and a mould for making a cast single crystal in which the casting mould comprises a main casting chamber and a seed crystal mounted at or adjacent the entry aperture to this chamber. The charge of molten metal is arranged to flow over the crystal to produce melting of its upper surface. The molten metal filling the mould is then arranged to solidify progressively from the seed crystal, which then imposes its own structure and orientation on the solidifying metal.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: September 4, 1984
    Assignee: Rolls-Royce Limited
    Inventors: Gordon J. S. Higginbotham, John R. Marjoram, Frederick J. Horrocks
  • Combination mold and selector device for casting single crystal objects
    Patent number: 4453588
    Abstract: A selector for use in allowing only one crystal from a directionally-solidified initiating mould cavity to grow into a main casting cavity is described. The selector comprises a ceramic member with a curvilinear groove formed in its surface. The selector is positioned in a two part ceramic shell mould which cooperates with the groove in the selector to form a curvilinear passage which selects the single crystal required.
    Type: Grant
    Filed: May 18, 1982
    Date of Patent: June 12, 1984
    Assignee: Rolls Royce Limited
    Inventors: Michael J. Goulette, Frederick J. Horrocks