Patents by Inventor Richard G. Hilvers

Richard G. Hilvers 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).

  • Casting of engine blocks
    Patent number: 6527040
    Abstract: In assembly of engine block mold package, a water jacket slab core is assembled on a barrel crankcase core having a plurality of barrels on which cylinder bore liners are positioned. Some of the barrels include a core print on a distal end thereof. The water jacket slab core includes a plurality of core prints each in mating relation with a respective barrel core print and a plurality of bore liner positioning surfaces that each engage a respective distal end of a respective cylinder bore liner when the water jacket slab core is assembled on the barrels.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: March 4, 2003
    Assignee: General Motors Corporation
    Inventors: James T. Singer, Richard G. Hilvers
  • Casting of engine blocks
    Publication number: 20020185249
    Abstract: In assembly of engine block mold package, a water jacket slab core is assembled on a barrel crankcase core having a plurality of barrels on which cylinder bore liners are positioned. Some of the barrels include a core print on a distal end thereof. The water jacket slab core includes a plurality of core prints each in mating relation with a respective barrel core print and a plurality of bore liner positioning surfaces that each engage a respective distal end of a respective cylinder bore liner when the water jacket slab core is assembled on the barrels.
    Type: Application
    Filed: June 11, 2001
    Publication date: December 12, 2002
    Inventors: James T. Singer, Richard G. Hilvers