Patents by Inventor William W. Simpson

William W. Simpson 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).

  • Bag spreaders
    Patent number: 4697403
    Abstract: An apparatus for flattening the horizontal seal area of a form-fill-seal pouch or bag comprising a pair of spreaders adapted to be located in the interior of the film pouch to stretch the film in the horizontal seal area to eliminate wrinkles in the film to insure an air-tight seal.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: October 6, 1987
    Assignee: USM Corporation
    Inventors: William W. Simpson, Irvin G. Fulton
  • Package forming apparatus and method
    Patent number: 4423585
    Abstract: A package forming and filling machine of the type which forms sheet material into a tube and the tube into individual packages incorporates a pair of magnetizable bars which are suspended within the tube during filling and are magnetically attracted outwardly during filling so as to maintain the tube open for the fill material. Associated driven belts engage external tube surfaces and are timed to operate in coordination with the tube sealing, stripping and severing mechanism.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: January 3, 1984
    Assignee: Rexham Corporation
    Inventors: Claude E. Monsees, William W. Simpson