Patent ID: 7575118

Claim:
A device for transporting and storing a powder or liquid medium, comprising: a structurally stable outer container comprising (i) at least one wall constructed of a supporting plastic layer and having an electrically conducting inner surface and an electrically conducting outer surface that are in mutual electrical contact, (ii) a top side that is open and capable of receiving an inner container, and (iii) a bottom section comprising a plurality of recesses wherein each recess is capable of receiving a pronged platform of a cargo moving device; and a thin-walled inner container disposed within said outer container, said inner container comprising (i) top section having an opening for filling and discharging a liquid or powder medium, (ii) at least one wall having a non-conductive plastic inner layer having a thickness of no more than 3 millimeters, and (iii) an electrically conductive outer layer having a surface in electrical contact with said outer container's inner surface, wherein said electrically conductive surfaces are constructed of a mixture of plastic material and an electrically conductive filler.