Hinge

A hinge comprising:

• a spacer assembly having (a) multiple fixed spacers, wherein each fixed spacer has a non-circular hole formed through the fixed spacer, an edge, and a cut-out formed on the edge of the fixed spacer, the cut-out having a first end and a second end, the cut-outs of the fixed spacers being disposed in aligned relationship with each other, (b) multiple rotating spacers respectively disposed adjacent to the fixed spacer, wherein each rotating spacer has a circular hole formed through the rotating spacer, an edge, and a notch formed on the edge of the rotating spacer, the notch having a first end and a second end, the notches of the rotating spaces being disposed in aligned relationship with each other and with the cut-outs of the fixed spacers, (c) a biasing device disposed adjacent to a respective one of the spacers and having a circular hole formed through the biasing devices, and (d) a washer disposed adjacent to the biasing device and having a non-circular hole formed through the washer;
• a rotating device having a proximal end disposed between a respective pair of the fixed spacers and a distal end, the rotating device being displaceable relative to the fixed spacers and the rotating spacers, the proximal end having a circular hole formed therethrough, the proximal end having at least one protrusion formed on a first side thereof adjacent the circular hole and movable respectively within the cutouts and the notches of at least a portion of the spacers;
• a pivot shaft extending through the rotating device and the spacer assembly and having a distal end and a proximal end, the pivot shaft including a fixed shaft portion formed on the proximal end, a threaded portion formed on the distal end, and a penetrating shaft portion formed between the fixed shaft portion and the threaded portion, the penetration shaft portion penetrating through the circular holes of the rotating spacers, the rotating device and the biasing device and through the non-circular holes of the fixed spacers and the washer;
• and
• a nut screwed onto the threaded portion of the pivot shaft.