Patents Assigned to Delaware Machinery and Tool Co., Inc.
  • Molding and die casting apparatus and methods
    Patent number: 7669639
    Abstract: A mold, or die is easily and conveniently maintainable, includes releasably retained parts and permits access and removal of mold parts or elements that may need maintenance, repair or replacement without removal of the mold or die from a die casting machine.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: March 2, 2010
    Assignee: Delaware Machinery and Tool Co., Inc.
    Inventors: Gregg E. Whealy, Ryan A. Haas, William R. Garrett, Brian L. Backus
  • Method and apparatus for injecting molten metal into a mold
    Patent number: 6651727
    Abstract: Air voids within a die casting may be minimized by controlling, during the shot process, the venting of gas from the shot tube through a shot tube opening with the proper size at a proper location, and the movement of metal within the shot tube to avoid entrapped gas and prematurely solidified aluminum particles in the molten metal being injected into the die cavity during the shot process.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: November 25, 2003
    Assignee: Delaware Machinery and Tool Co., Inc.
    Inventors: Greg A. Prince, Richard L. Smith, Harry Richey