| I.P Abstract & Summary |
The present invention relates generally to a pivot hinge apparatus for a door, and more specifically to a pivot hinge apparatus for a door, in which even when both a torsion device and a damping device are implemented by adding them to each other, a state in which a first cam unit and a second cam unit are engaged with each other is maintained despite a difference in speed attributable to damping force, and thus they are prevented from running idle, with the result that damping force is accurately transferred to a door, thereby improving the reliability of the operation of opening and closing the door. |
