Patent 7478412 was granted and assigned to Samsung on January, 2009 by the United States Patent and Trademark Office.
A damper and a disk drive using the clamper. The damper includes a body, a movable member inserted into a guide portion protruding from a center of the body so that the movable member is moved up and down along the guide portion, and having a plurality of opposed bosses, an elastic member, inserted into the guide portion under the movable member, for elastically biasing the movable member upward, and a stationary member, installed on an upper portion of the guide portion, for preventing the movable member from being released from the guide portion.