Patent 7712518 was granted and assigned to Quanta Computer on May, 2010 by the United States Patent and Trademark Office.
A heat dissipation apparatus used in a computer comprises a heat sink and a star-shaped spring with multiple directional arms, wherein each directional arm extends in a corresponding direction, and the tangent direction of the corresponding contact boundary formed by securing the direction arm to the heat sink is perpendicular to the corresponding direction. The force imposed from the spring on the heat sink is uniform as a result of the perpendicular mechanism.