Patents Assigned to Grand Haven Brass Foundry
  • Method and apparatus for packing a granular material for foundry use
    Patent number: 5535809
    Abstract: Core sand material is received in an enclosed chamber and is forced into the cavity of a mold by compressing the air above the sand material with essentially no mixing of the air and sand material. The air is compressed by a piston which forces a pressure packer plate downwardly above the core sand material which is held in the bottom of the chamber by a specially designed baffle control plate assembly ready to be forced by the compressed air into the mold.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: July 16, 1996
    Assignee: Grand Haven Brass Foundry
    Inventor: Lyle E. White