Patent ID: 7031466

Claim:
A hinge positioning apparatus for a foldable mobile telephone having a hinge barrel with cover hinge knuckles and body hinge knuckles, the hinge positioning apparatus comprising: a shaft adapted to be mounted in the body hinge knuckles of the hinge barrel; a washer mounted around the shaft at one end of the shaft the deformed end and the deformed end held the washer; a set angle device mounted around the shaft and adapted to be mounted in the hinge barrel, and the set angle device comprising: a stationary sleeve with a central hole mounted around the shaft and adapted to be securely mounted in the body hinge knuckles of the hinge barrel, the stationary sleeve comprising: an outer periphery and one end; and at least one transverse concave groove formed on the one end of the stationary sleeve; and a retractable sleeve with a central hole mounted around the shaft and comprising: an outer periphery and one end; and a transverse convex ridge formed on the one end of the retractable sleeve and corresponding to and rotatably abutting each respective one of the at least one transverse concave groove on the stationary sleeve; and a biasing member mounted around the shaft and compressibly mounted between the retractable sleeve of the set angle device and the washer.