Patents by Inventor Donald C. Winfrey

Donald C. Winfrey 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).

  • Patent number: 5686128
    Abstract: The triple coextrusion of snack food products having highly uniform and integral individual layers is achieved by the use of a compact, precisely toleranced coextrusion die which may be mounted at the outlet end of a cooker extruder. The coextrusion die includes a die block with smooth, unobstructed flow passages for each material. The outer passages for the casing material are substantially coaxial with the central axis of the die block and extend from end to end. A central bore and an annular passage having their central axes aligned with the central axis of the die block at its outlet end extend upstream to filler feed ports. The feed port entrances are at the outer surface of the die block between its ends. The side ports and filler feed lines connected to them do not interfere with a substantially straight flow path of casing material directly from a cooker extruder. A protruding tip formed at the outlet end of the die block by the bore and annular passage extends into a converging block or cone.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: November 11, 1997
    Assignee: Nabisco Technology Company
    Inventors: Gregory A. Tracy, Kevin Addesso, Donald C. Winfrey, Alger C. Marable, Robert Straka