Nestable base and cover assembly

Abstract

A base and cover assembly including a first base, the first base comprising a first base peripheral wall defining a first base cavity, and a first base lip disposed along a perimeter of the first base peripheral wall; and a first cover separable from the first base, the first cover comprising a first cover peripheral wall defining a first cover cavity, the first cover cavity including a first cover cavity interior side and a first cover cavity exterior side, the first cover including a first cover lip disposed along a perimeter of the first cover peripheral wall.

What is claimed is: 
     
         1 . A base and cover assembly comprising:
 a first base, the first base comprising a first base peripheral wall defining a first base cavity, and a first base lip disposed along a perimeter of the first base peripheral wall;   a first cover separable from the first base, the first cover comprising a first cover peripheral wall defining a first cover cavity, the first cover cavity including a first cover cavity interior side and a first cover cavity exterior side, the first cover including a first cover lip disposed along a perimeter of the first cover peripheral wall, the first base and the first cover being assembled together such that the first cover peripheral wall is disposed within the first base cavity with the first base lip resting against the first cover lip on the first cover cavity exterior side;   a second base, the second base comprising a second base peripheral wall defining a second base cavity, and a second base lip disposed along a perimeter of the second base peripheral wall; and   a second cover separable from the second base, the second cover comprising a second cover peripheral wall defining a second cover cavity, the second cover cavity including a second cover cavity interior side and a second cover cavity exterior side, the second cover including a second cover lip disposed along a perimeter of the second cover peripheral wall, the second base and the second cover being assembled together such that the second cover peripheral wall is disposed within the second base cavity with the second base lip resting against the second cover lip on the second cover cavity exterior side, wherein the first base and the second base are in a nested arrangement.   
     
     
         2 . The base and cover assembly of  claim 1 , wherein the first base further comprises at least one seating surface disposed around the first base peripheral wall. 
     
     
         3 . The base and cover assembly of  claim 1 , wherein the second base further comprises at least one seating surface disposed around the second base peripheral wall. 
     
     
         4 . The sandbox assembly of  claim 1 , wherein the first base and the second base in a nested arrangement have a nesting factor of at least 50%. 
     
     
         5 . The base and cover assembly of  claim 1 , further comprising:
 a third base, the third base comprising a third base peripheral wall defining a third base cavity, and a third base lip disposed along a perimeter of the third base peripheral wall; and   a third cover separable from the third base, the third cover comprising a third cover peripheral wall defining a third cover cavity, the third cover cavity including a third cover cavity interior side and a third cover cavity exterior side, the third cover including a third cover lip disposed along a perimeter of the third cover peripheral wall, the third base and the third cover being assembled together such that the third cover peripheral wall is disposed within the third base cavity with the third base lip resting against the third cover lip on the third cover cavity exterior side, wherein the first base, the second base, and the third base are in a nested arrangement.   
     
     
         6 . The sandbox assembly of  claim 5 , wherein the third base has a nesting factor of at least 50% when added to the first base and the second base in a nested arrangement. 
     
     
         7 . The base and cover assembly of  claim 5 , wherein the third base further comprises at least one seating surface disposed around the third base peripheral wall.