Patents by Inventor Byung-Hak Kwak

Byung-Hak Kwak 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).

  • Patent number: 5987369
    Abstract: A system and method of controlling a semiactive suspension is disclosed. The system and method effectively selects appropriate damping force curves for the dampers of the four wheels in accordance with both an output vertical acceleration signals from three vertical acceleration sensors installed on the dampers of three wheels and an output axle acceleration signal from an axle acceleration sensor installed on the axle. At the resonance frequency band of a car body, the system and method controls the suspension according to the vertical speeds and ride values, calculated from the vertical acceleration signals, thus reducing the uncomfortable riding effects of the vehicle. Meanwhile, at the resonance frequency band of the axle, the system and method controls the suspension with a higher damping force thus securing steering safety of the vehicle.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: November 16, 1999
    Assignee: Mando Machinery Corporation
    Inventors: Byung-Hak Kwak, Jung-Soo Shim