Patent ID: 8562251

Claim:
A fluid containment apparatus, comprising: a floor; a side wall that with the floor at least partially defines a containment area for fluid; and a wall support that supports the side wall, wherein the wall support has an initial supporting position in which the side wall is held in a containment position so as to at least partially define with the floor the containment area, wherein the wall support is moveable to a collapsed position in which the side wall is located in a collapsed state such that the containment area defined in the initial supporting position is no longer defined, wherein the wall support is subsequently movable from the collapsed position back to the initial supporting position but is not movable beyond the initial supporting position from the collapsed position, the wall support further defining a base and an inner support leg that extends from the base, wherein the wall support has a pivoting leg that pivots with respect to the base, wherein the base and the inner support leg remain in the same location when the wall support is in both the initial supporting position and in the collapsed position, and wherein the pivoting leg changes locations when the wall support is moved from the initial supporting position to the collapsed position, and the base defines a detent that holds the pivoting leg when the wall support is in the initial supporting position, wherein when a sufficient amount of force is applied to the pivoting leg the pivoting leg is forced out of the detent so as to pivot with respect to the base towards the inner support leg, and wherein when the wall support is in the collapsed position and is subsequently movable back to the initial supporting position sufficient force applied to the pivoting leg causes the pivoting leg to be forced back into the detent to be held by the detent.