US Patent 7540041 Collapsible toilet

The invention is a collapsible toilet made of sheet material, the toilet comprising holding side walls to which two edges of an annular seat surface are joined, and supporting side walls connecting the holding side walls and having upper edges forming a supporting periphery that supports the seat surface. In the seat surface a fold-line is arranged at an equal distance from the top edges of the holding side walls, said fold-line enabling folding the seat surface into the inner space when the holding side walls are moved towards each other.