Patent ID: 7017233

Claim:
A hinge assembly for a foldable portable electronic device, comprising: a shaft; a case drive member; a prime mover spring having two end portions, the end portions being respectively secured to the shaft and the case drive member; a main body drive member movably engaged with the case drive member; a locating cylinder for receiving the main body drive member therein, the locating cylinder comprising an annular body, at least one hole through an outer periphery of the annular body, at least one protrusion extending from one end of the annular body, and a projection extending at an angle from a distal end of said at least one protrusion; at least one driving pin having one end abutting the case drive member; a manual button adapted to retain an opposite end of said driving pin; and a positioning pin for holding the shaft and the main body drive member; wherein the shaft extends through the prime mover spring, the case drive member and the main body drive member thereby integrating the hinge assembly into a complete unit.