Patent ID: 6862779

Claim:
A hinge for a piece of portable electronic equipment with a cover and a base, the hinge comprising a keyed pivot pin having; a head having an inside end and an outside end; a combination shaft formed on and extending coaxially from the inside end of the head and having a proximal end; a distal end; and a thread formed on the proximal end; a stationary leaf securely attached to the keyed pivot pin and having; a distal end; and a proximal end attached to the outside end of the head of the keyed pivot pin; a washer mounted around the combination shaft, abutting the inside end of the head of the keyed pivot pin and having a central circular hole; a rotating positioning element mounted rotatably on the combination shaft against the washer and having: a moveable leaf; a rotating end having an inside surface and an outside surface; a central circular hole formed through the rotating end and having a center; a first detent formed concentrically in the inside surface of the rotating end around the central circular hole at a distance from the center of the central circular hole and having two inclined ends, a centerline, a radial thickness and an angular extension; and a second detent formed in the inside surface of the rotating end around the central circular hole at a distance from the center of the central circular hole and having two inclined ends, a centerline, a radial thickness and an angular extension wherein the first detent and the second detent are not symmetrically arranged relative to each other about the center of the circular hole; a stationary positioning element keyed on the distal end of the combination shaft, abutting the rotating positioning element and having; an inside surface; an outside surface; a central keyhole formed through the stationary positioning element keyed on the combination shaft wherein the combination shaft keeps the stationary positioning element from rotating; a first protrusion formed on the inside surface of the stationary positioning element, corresponding to the first detent in the rotating positioning element and detachably held in the first detent; and a second protrusion formed on the inside surface of the stationary positioning element and corresponding to the second detent in the rotating positioning element and detachably held in the second detent; a biasing member mounted around the distal end of the combination shaft, pressing against the inside surface of the stationary positioning element and having a circular central hole formed through the biasing member; and a fastener attached to the distal end of the combination shaft and holding the biasing member, the stationary positioning element, the rotating positioning element and the washer on the combination shaft.