Patents Assigned to Robert Systems, Inc.
  • Fitment forming process
    Patent number: 5366578
    Abstract: A generally continuous strip of thermoplastic material is cold formed into a desired preformed configuration while retaining continuity with the generally continuous strip to form a chain of preformed configurations remaining continuous with the generally continuous strip of thermoplastic material. End portions of the chain are severed so as to form a cartridge of preformed configurations to be used in the formation of a cartridge of fitments.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: November 22, 1994
    Assignee: Robert Systems, Inc.
    Inventors: William Z. Vanhook, John T. Roberts, Larry J. Mattson