Patents by Inventor Edward C. Wall

Edward C. Wall 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 mold and method for casting achieving in-mold modification of a casting metal
    Patent number: 7578336
    Abstract: A casting mold and method for its use to achieve in-mold modification of the casting metal is disclosed. One or more chambers are located within the casting mold's runner system. Each chamber can contain metallurgical modifiers for adjusting the chemical composition of the metal to improve the mechanical and physical properties of an article cast from the metal. One or more modifiers can be placed in the chamber(s) as the casting mold is assembled for use. As the melt is introduced to the casting mold, it passes through the chamber(s) and liquefies the modifier. Amounts of the liquid modifier, then, are carried away and become dispersed in the melt as it continues through the runner system and into the mold cavity. The metallurgical modifiers can be selected from any number of known additives or alloying elements, including strontium, among others.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: August 25, 2009
    Inventors: Kenneth George Stahl, Jr., Venkatramanan Srinivasan, James T. Singer, Edward C. Wall, Mark A. Osborne
  • Mold design for castings requiring multiple chills
    Patent number: 7017648
    Abstract: A mold design is disclosed for precision sand casting of engine cylinder blocks, such as engine cylinder V-blocks, having chills disposed therein, wherein an expansion and contraction caused by changes in temperature during the casting operation are accommodated by the chills.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: March 28, 2006
    Assignee: General Motors Corporation
    Inventors: Thomas P. Newcomb, Edward C. Wall
  • Method for preparing engine block cylinder bore liners
    Patent number: 7013947
    Abstract: A method for preparing engine block cylinder bore liners is disclosed, the method including preconditioning of the cylinder bore liners for use in sand casting of engine cylinder blocks, wherein an efficiency of the preconditioning process is maximized, a metal pour temperature is minimized, and material properties of the casting are optimized.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: March 21, 2006
    Assignee: General Motors Corporation
    Inventors: Kenneth G. Stahl, Jr., Barry L. Priem, Allen T. Birschbach, Edward C. Wall