Patents Assigned to Controlco Inc.
  • CNC core removal from casting passages
    Patent number: 6474348
    Abstract: A method of removing ceramic core material from an internal passage of a superalloy airfoil casting using a CNC controlled fluid spray nozzle in a manner that the fluid spray nozzle is caused to laterally scan and/or rotary orbit an area of one or more openings of one or more passages at an exterior casting surface to improve removal of material residing in the passage.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: November 5, 2002
    Assignees: Howmet Research Corporation, Controlco Inc.
    Inventors: James L. Beggs, Paul C. Jensen