Patents by Inventor Heedong Rho

Heedong Rho 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).

  • Electric power steering system equipped with worm gear clearance compensator
    Patent number: 7527122
    Abstract: Disclosed is an electric power steering system including a housing; a steering shaft positioned in the housing; a worm wheel mounted on the steering shaft; a worm shaft; a worm gear formed on the worm shaft so as to mesh with the worm wheel; a motor for driving the worm shaft; a first worm shaft bearing positioned on an end of the worm shaft; and an elastic member for applying a load to the first worm shaft bearing in a diametric direction, the elastic member being formed by double-folding a leaf spring in an approximately U-shaped configuration, both ends of the elastic member being supported by the housing, a central portion of the elastic member abutting an outer peripheral surface of the first worm shaft bearing.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: May 5, 2009
    Assignee: Mando Corporation
    Inventor: Heedong Rho
  • Electric power steering system equipped with worm gear clearance compensator
    Publication number: 20070107976
    Abstract: Disclosed is an electric power steering system including a housing; a steering shaft positioned in the housing; a worm wheel mounted on the steering shaft; a worm shaft; a worm gear formed on the worm shaft so as to mesh with the worm wheel; a motor for driving the worm shaft; a first worm shaft bearing positioned on an end of the worm shaft; and an elastic member for applying a load to the first worm shaft bearing in a diametric direction, the elastic member being formed by double-folding a leaf spring in an approximately U-shaped configuration, both ends of the elastic member being supported by the housing, a central portion of the elastic member abutting an outer peripheral surface of the first worm shaft bearing.
    Type: Application
    Filed: October 6, 2006
    Publication date: May 17, 2007
    Applicant: Mando Corporation
    Inventor: Heedong Rho