Containers having positional coupling device

Abstract

The present disclosure relates to containers having positional lock coupling. In accordance with aspects of the present disclosure, a positional coupling device includes at least one protrusion protruding from and fixed to a first surface, and at least one hole fixed within a second surface where the at least one hole corresponds to the at least one protrusion and is configured to receive the at least one protrusion. When the first surface and the at least one protrusion are rotated relative to the second surface and the least one hole, the at least one hole receives the at least one protrusion in at least two distinct rotational positions.

What is claimed is: 
     
         1 . A positional coupling device comprising:
 at least one protrusion protruding from and fixed to a first surface; and   at least one hole fixed within a second surface, the at least one hole corresponding to the at least one protrusion and configured to receive the at least one protrusion,   wherein when the first surface and the at least one protrusion are rotated relative to the second surface and the least one hole, the at least one hole receives the at least one protrusion in at least two distinct rotational positions.   
     
     
         2 . The positional coupling device of  claim 1 , wherein the first surface and the second surface are parallel. 
     
     
         3 . The positional coupling device of  claim 2 , wherein the at least two distinct rotational positions include a closed position in which at least one of the first surface or the second surface completely overlaps the other of the two surfaces. 
     
     
         4 . The positional coupling device of  claim 1 , further comprising:
 a first magnet positioned beneath the at least one protrusion; and   a second magnet positioned beneath the at least one hole, the second magnet configured to be magnetically attracted to the first magnet,   wherein the first magnet and the second magnet hold the first surface and the second surface in a stable position when the at least one protrusion is received in the at least one hole.   
     
     
         5 . The positional coupling device of  claim 1 , wherein the at least one protrusion includes nibs and the at least one hole includes at least nib hole configured to receive the nibs. 
     
     
         6 . The positional coupling device of  claim 1 , wherein the at least one protrusion is a protrusion having a square shape and the at least one hole is a hole having a square shape, wherein the at least two distinct rotational positions include four distinct rotational positions. 
     
     
         7 . The positional coupling device of  claim 1 , wherein the at least one protrusion is a protrusion having a pentagon shape and the at least one hole is a hole having a pentagon shape, wherein the at least two distinct rotational positions include five distinct rotational positions. 
     
     
         8 . The positional coupling device of  claim 1 , wherein the at least one protrusion is a protrusion having a cross shape and the at least one hole is a hole having a cross shape, wherein the at least two distinct rotational positions include four distinct rotational positions. 
     
     
         9 . The positional coupling device of  claim 1 , wherein the at least one protrusion is a protrusion having a cross shape and the at least one hole is a hole having a cross shape, wherein the at least two distinct rotational positions include four distinct rotational positions. 
     
     
         10 . The positional coupling device of  claim 1 , wherein the at least one protrusion is a protrusion having a three-line cross shape and the at least one hole is a hole having a three-line cross shape, wherein the at least two distinct rotational positions include three distinct rotational positions. 
     
     
         11 . The positional coupling device of  claim 1 , wherein a portion of the at least one protrusion includes a key,
 wherein a portion of the at least one hole includes a keyhole,   wherein the key and the keyhole align in one position of the at least two distinct rotational positions, thereby allowing the at least one protrusion to be received in and removed from the at least one hole in the one position and thereby restricting the at least one protrusion from being removed from the at least one hole when the rotational position is not the one position.   
     
     
         12 . The positional coupling device of  claim 11 , wherein the at least one protrusion includes a lower platform, a center post, and an upper platform, wherein the upper platform includes the key,
 wherein when the upper platform is received in the at least one hole while the lower platform is not received in the at least one hole, the first surface and the second surface freely rotate with respect to each other.   
     
     
         13 . The positional coupling device of  claim 1 , wherein the at least one protrusion and the at least one hole have chamfered edges. 
     
     
         14 . The positional coupling device of  claim 1 , wherein the at least one protrusion and the at least one hole are not exactly complementary. 
     
     
         15 . A container device comprising:
 a cover having a cover inner surface and at least one protrusion protruding from and fixed to the cover inner surface; and   a base having a base inner surface and at least one hole fixed within a base inner surface, the at least one hole corresponding to the at least one protrusion and configured to receive the at least one protrusion,   wherein when the cover inner surface and the at least one protrusion are rotated relative to the base inner surface and the least one hole, the at least one hole receives the at least one protrusion in at least two distinct rotational positions.   
     
     
         16 . The container of  claim 15 , wherein the base includes at least one well configured to receive a sub stance. 
     
     
         17 . A container device comprising:
 a plurality of container layers including a cover layer, a base layer, and at least one internal layer between the cover layer and the base layer,   wherein any two adjacent layers of the plurality of container layers includes a positional coupling device as in  claim 1 .