Patents by Inventor Douglas S. Vandergriff

Douglas S. Vandergriff 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).

  • Bulk container with removable liner, discharge fitment for the liner, and adapter for connection to discharge port of the container
    Patent number: 5680959
    Abstract: A lined container includes a rigid-walled vessel having a discharge port, a flexible liner having a discharge fitment, and an adapter for connecting the discharge fitment to the discharge port of the vessel. The adapter includes a tubular member having a coaxial bore and a set of male, tapered threads for engaging with female, tapered threads of the discharge fitment of the flexible liner. The adapter also includes a flange member for accommodating a sealing ring abutted against an inner wall of the rigid walled vessel. A method of inserting the liner and adapter into the rigid vessel includes guiding the adapter (with liner attached), using a guide leash, through a top aperture, into the vessel, and then out the vessel through the discharge port (leaving just the liner inside).
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: October 28, 1997
    Assignee: 21st Century Containers, Ltd.
    Inventors: Steven P. Ettore, Joseph J. Lane, Douglas S. Vandergriff
  • Bulk container with removable liner, discharge fitment for the liner, and adapter for connection to discharge port of the container
    Patent number: 5586690
    Abstract: A lined container includes a rigid-walled vessel having a discharge port, a flexible liner having a discharge fitment, and an adapter for connecting the discharge fitment to the discharge port of the vessel. The adapter includes a tubular member having a coaxial bore and a set of male, tapered threads for engaging with female, tapered threads of the discharge fitment of the flexible liner. The adapter also includes a flange member for accommodating a sealing ring abutted against an inner wall of the rigid walled vessel. A method of inserting the liner and adapter into the rigid vessel includes guiding the adapter (with liner attached), using a guide leash, through a top aperture, into the vessel, and then out the vessel through the discharge port (leaving just the liner inside).
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: December 24, 1996
    Assignee: 21st Century Containers, Ltd.
    Inventors: Steven P. Ettore, Joseph J. Lane, Douglas S. Vandergriff