COLLAPSIBLE VESSEL Russian patent published in 2003 - IPC

FIELD: domestic facilities, in particular, liquid storage containers. SUBSTANCE: collapsible vessel is made from flexible watertight material and includes foldable bottom and walls connected to one another along side edges by pivoting one with respect to another. Collapsible vessel is made in the form of triangular prism with rectangular upper walls having upper edges bent into vessel and fixed to wall inner sides. Vessel bottom is made in the form of triangle connected with its side edges to lower edges of vertical walls so as to form rigidity edges under vessel bottom. Vessel is collapsed by bending of one vertical wall and bottom into vessel for forming of inner folds. Vessel acquires increased rigidity after unfolding into operating position and stability after positioning on bumpy surface. EFFECT: convenient use and improved workability in manufacture. 3 dwg