Patents Assigned to The Hamilton Foundry & Machine Co.
  • Method and apparatus for the manufacture of unitary complex cores
    Patent number: 5201811
    Abstract: A method and apparatus for the manufacturing in one operation of a complex core, such as a core for manufacturing a double-volute turbo-charger housing. The apparatus includes two separable core box halves and a segmented mandrel removably disposed between the two separable core box halves. The mandrel has two removable segments which allow for the removal of a completed core.
    Type: Grant
    Filed: January 28, 1992
    Date of Patent: April 13, 1993
    Assignee: The Hamilton Foundry & Machine Co.
    Inventors: Donald R. Lebold, Christopher J. Lichtle