Patents Assigned to 3D Manufacturing, Inc.
  • Patent number: 4834929
    Abstract: A method of making precision low cost molds by applying a plurality of layers of material to a pattern. The method includes providing a pattern of the part to be formed; orienting the pattern on a surface plate in a molding dam; applying a release coating to the surfaces; applying a thin resin layer to form the mold surface; applying a layer of fiber reinforced tooling resin to the thin resin layer; applying an epoxy-dry plaster bonding layer to the tooling resin; inserting a reinforcement framework into the dam; and applying bulk casting plaster to complete the body of the mold.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: May 30, 1989
    Assignee: 3D Manufacturing, Inc.
    Inventors: William A. Dehoff, Hugh T. Dehoff, Chris A. Dehoff