Patent ID: 6244453
Filing Date: 2001-06-12
Classification: B65D

Abstract:
A cistern, specifically designed for holding and carrying liquids, comprising supporting means, a tank (7) and holding means for holding said tank, said tank holding means being operatively coupled both to said supporting means and to said tank (7), said tank holding means comprising a metal cage (5), made of a plurality of crossings (4) of metal hollow horizontally and vertically arranged pipes (2, 3) having a quadrilateral cross-section, the horizontally arranged pipes (2) having an asymmetrical contour, whereas the vertically arranged pipes (3) have a symmetrical contour, characterized in that said horizontally arranged pipes (2) have a cusp (12) at each vertex of their cross-section, said horizontally arranged pipes (2) having two external flat faces opposite to one another, the remaining faces being slightly concave and having a cross-section being asymmetrical in a diagonal plane between two opposing corners, said vertically arranged pipes (3) having a cusp (13) at each vertex of their cross-section, said pipes (3) having four external concave faces and a cross-section being symmetrical in a diagonal plane between two opposing corners and that at each crossing of a horizontal (2) and vertical (3) pipes, the horizontal pipe (2) is arranged such that the flat faces of the horizontal pipe (2) are arranged perpendicularly to the plane defined by the contact region, so that at each crossing, four contact points are provided.