Hinge with motion limiting mechanism

A motion limiting mechanism adapted for use with a hinge comprising:

• a first member having a first substantially planar surface;
• a second member having a second substantially planar surface, wherein said first and second surfaces are disposed parallel and in close proximity to one another;
• a hinge for allowing rotational movement between said first and second members, said hinge comprising a circular depression on said first surface and a matingly engagable circular protrusion on said second surface, wherein an axis of rotation of said members is substantially coaxial with said circular depression and perpendicular to said first and second surfaces;
• a motion limiting mechanism for limiting rotation between said first and second members, said motion limiting mechanism comprising;
• a rib on said second surface having a first end connected to said first protrusion and a second end disposed radially outward from said first end, wherein a height of said second end is greater than said first end, and an arcuate depression on said first surface having a radius of curvature centered on said circular depression, having first and second endwalls, said arcuate depression being matingly engagable with said rib allowing said rib to freely move within said depression and between said first and second endwalls whereby relative rotation between said first and second members is limited by an angular dimension of said arcuate depression around said circular depression.