Patents by Inventor Robert K. Hembree

Robert K. Hembree 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 system for casting engine blocks having defect free thin walls
    Patent number: 5421397
    Abstract: An improved method of and system for die casting an engine block made of aluminum is provided. Included in the system is a calorific fluid for circulating through a bore pin assembly in a preselected temperature range which is continuously maintained by a heat transfer fluid controlling device.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: June 6, 1995
    Inventors: Robert K. Hembree, Mark L. Purtee