Patents by Inventor Eui-Sup Ka

Eui-Sup Ka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060274447
    Abstract: A disk mounting hub has a disk-mounting face formed at one end as a truncated conical surface of revolution symmetric about a central axis. A cylindrical inner hub member is coaxial with the hub body outside diameter and the surrounding mounting face. The inner hub member is adapted to receive a planar disk with a central opening. The mounting face is disposed at a hub face angle (n/2+/?1) relative to the central axis. Hub face angle ? is selected so that a disk clamping force F applied to an inner disk portion surrounding the opening bends a portion of the disk interior to the hub inside diameter to conform with the conical disk-mounting face. This interior bending portion reduces or eliminates the tendency of the outer disk portion to form an excessive conning angle ?.
    Type: Application
    Filed: August 15, 2006
    Publication date: December 7, 2006
    Inventors: Woo-Sung Kim, Sung-Wook Kim, Eui-Sup Ka
  • Patent number: 7133251
    Abstract: A disk mounting hub has a disk-mounting face formed at one end as a truncated conical surface of revolution symmetric about a central axis. A cylindrical inner hub member is coaxial with the hub body outside diameter and the surrounding mounting face. The inner hub member is adapted to receive a planar disk with a central opening. The mounting face is disposed at a hub face angle (?/2+/??) relative to the central axis. Hub face angle ? is selected so that a disk clamping force F applied to an inner disk portion surrounding the opening bends a portion of the disk interior to the hub inside diameter to conform with the conical disk-mounting face. This interior bending portion reduces or eliminates the tendency of the outer disk portion to form an excessive conning angle ?.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: November 7, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Sung Kim, Sung-Wook Kim, Eui-Sup Ka
  • Patent number: 7093346
    Abstract: A hard disk hub has a disk-mounting face formed at one end as a truncated conical surface of revolution symmetric about the hub axis. A cylindrical inner hub member is coaxial with the hub body outside diameter and the surrounding mounting face. The inner hub member is adapted to receive a planar disk with a central mounting hole with disk inside diameter fitted around it. The mounting face is disposed at a hub conning angle (?/2+/??) relative to the hub axis. Hub conning angle ? is selected so that a disk mounting force F applied to an inner disk portion surrounding the central mounting opening bends a portion of the disk interior to the hub inside diameter to conform contiguous facing relationship with the conical disk-mounting face. This interior bending portion reduces or eliminates the tendency of the outer disk portion to form an excessive conning angle ?.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: August 22, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Sung Kim, Sung-Wook Kim, Eui-Sup Ka
  • Publication number: 20050223544
    Abstract: A hard disk hub has a disk-mounting face formed at one end as a truncated conical surface of revolution symmetric about the hub axis. A cylindrical inner hub member is coaxial with the hub body outside diameter and the surrounding mounting face. The inner hub member is adapted to receive a planar disk with a central mounting hole with disk inside diameter fitted around it. The mounting face is disposed at a hub conning angle (?/2+/??) relative to the hub axis. Hub conning angle ? is selected so that a disk mounting force F applied to an inner disk portion surrounding the central mounting opening bends a portion of the disk interior to the hub inside diameter to conform contiguous facing relationship with the conical disk-mounting face. This interior bending portion reduces or eliminates the tendency of the outer disk portion to form an excessive conning angle ?.
    Type: Application
    Filed: June 3, 2005
    Publication date: October 13, 2005
    Inventors: Woo-Sung Kim, Sung-Wook Kim, Eui-Sup Ka
  • Publication number: 20050052782
    Abstract: A hard disk hub has a disk-mounting face formed at one end as a truncated conical surface of revolution symmetric about the hub axis. A cylindrical inner hub member is coaxial with the hub body outside diameter and the surrounding mounting face. The inner hub member is adapted to receive a planar disk with a central mounting hole with disk inside diameter fitted around it. The mounting face is disposed at a hub conning angle (?/2 +/??) relative to the hub axis. Hub conning angle ? is selected so that a disk mounting force F applied to an inner disk portion surrounding the central mounting opening bends a portion of the disk interior to the hub inside diameter to conform contiguous facing relationship with the conical disk-mounting face. This interior bending portion reduces or eliminates the tendency of the outer disk portion to form an excessive conning angle ?.
    Type: Application
    Filed: September 8, 2003
    Publication date: March 10, 2005
    Inventors: Woo-Sung Kim, Sung-Wook Kim, Eui-Sup Ka