Patent ID: 7912523

Claim:
A portable electronic device, comprising; a first member including a front with a display; a second member including a front with one or more input keys; and a hinge mechanism pivotally connecting the second member to the first member for pivotal movement between a closed position where the front of the second member is adjacent to and directly opposes the front of the first member, and an open position where the front of the first member and the front of the second member generally face in the same direction, the hinge mechanism including a first semi-annular elongated recess and a semi-annular elongated concave member with a semi-annular elongated concave surface, the semi-annular elongated rotation member being pivotally and slidably disposed within the first semi-annular elongated recess, and the semi-annular elongated concave surface of the semi-annular elongated rotation member being exposed when the first member and the second member are in the closed position and being not exposed when the first member and the second member are in the open position.