Abstract: An apparatus comprises an assembly adapted to rotatably couple a first housing and a second housing, the assembly adapted to rotate the first housing and the second housing with respect to each other between a closed configuration and at least one open configuration, the assembly comprising an inner ring coupled with the first housing and an outer ring coupled with the second housing, the inner ring slidably coupled with the outer ring in a circumferential direction, the outer ring movable through a first opening in the first housing, the inner ring movable through a second opening in the second housing when the first housing and the second housing rotate with respect to each other.

Abstract: In accordance with an example embodiment of the present invention, an apparatus comprises an assembly adapted to rotatably couple a first housing and a second housing, said assembly adapted to rotate said first housing and said second housing with respect to each other between a closed configuration and at least one open configuration, said assembly comprising an inner ring coupled with said first housing and an outer ring coupled with said second housing, said inner ring slidably coupled with said outer ring in a circumferential direction, said outer ring movable through a first opening in said first housing, said inner ring movable through a second opening in said second housing when said first housing and said second housing rotate with respect to each other.