Patents by Inventor Gary Dale Helgesen

Gary Dale Helgesen 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).

  • Core assembly manufacturing apparatus of casting engine blocks and method for making the assembly
    Patent number: 5771955
    Abstract: A plurality of inter-connected cores includes barrel cores (18). Bore liners (10) surround the barrel cores (18) and are fixed in relation thereto. A cylinder block mold core package (22) is assembled from the cores (14, 24, 26, 28). The liners (10) are heated while they are within the cylinder block mold core package (22) by induction heating. To prevent migration, a mechanical interlock is provided between each liner (10) and its associated barrel core (18).
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: June 30, 1998
    Assignee: Ford Global Technologies, Inc.
    Inventors: Gary Dale Helgesen, Robert Gordon Rentschler, Thomas John Heater