Patents by Inventor Warwick William Field

Warwick William Field 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: 6666358
    Abstract: A beer container comprises an inner hollow shell of blow moulded PET to hold beer, an outer hollow shell of moulded high density polyethylene enclosing and supporting the inner shell and a spear structure including a dispenser tube extending from a bottom interior region of the inner shell through to a dispensing outlet at the top of the outer shell. The spear structure incorporates valves for supply of pressurizing gas into the interior of inner shell and for dispensing beer through the dispensing outlet, both valves being formed of PET. When the container has been emptied of beer, the outer shell can readily be separated from the inner shell and spear structure to allow separate recycling of the high density polyethylene material and the PET material.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: December 23, 2003
    Assignee: Ecokeg Pty Ltd
    Inventor: Warwick William Field