Patent ID: 8387817
Filing Date: 2013-03-05
Classification: B65D,Y10T

Abstract:
1. A container for holding fluids in isolation, the container comprising: an outer container having a side wall with a bottom, said outer container defining an internal space with a predetermined volume; first and second inner containers disposed within said outer container volume adapted and configured to carry said inner containers, said inner containers being separate from one another; said first inner container being collapsible and having a bottom at least partially disposed adjacent the bottom of said outer container and defining a fluid-holding internal chamber having a variable volume; an outlet port providing communication with the internal chamber of said collapsible first inner container including a first elongate hollow tube having a side wall defining an internal passageway for carrying fluid between a lower end terminating at a position adjacent the first inner container bottom and an upper exposed free end adapted to receive a flow line for withdrawing fluid therefrom; said second inner container being expandable and having a bottom at least partially disposed adjacent the bottom of said outer container and defining a fluid-holding internal chamber having a variable volume; an inlet port providing communication with the internal chamber of said expandable second inner container including a second elongate hollow tube having a side wall defining an internal passageway for carrying fluid between an upper exposed free end adapted to receive a flow line and a lower end terminating at a position adjacent the second inner container bottom for delivering fluid thereto; and, said inner containers occupying not more than said predetermined volume of said outer container, whereby in use said collapsible first inner container is initially expanded and holds fluid and said expandable second inner container is initially collapsed and empty, and whereby fluid withdrawn from said collapsible first inner container effects its deflation and fluid delivered to said expandable second inner container effects its inflation so that the overall volume of said inner containers may remain substantially constant.