Patents by Inventor Chul Ki SONG

Chul Ki SONG 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: 11186965
    Abstract: An excavator pedal valve, including: a body part in which a flow path for controlling forward and backward traveling is formed in a front and a rear of an interior in a vertical direction; a cam part provided at an upper end of the body part and provided so as to be rotatable in a forward direction and a rear direction with respect to a central axis by driving of a pedal; a rod part provided in each of a front lower portion and a rear lower portion of the cam part to apply force in a vertical direction along the flow path of the body part; and a return elastic part provided in a lower portion of the rod part to return the rod part upward. A rotation part is formed at a lower portion of the cam part having a contact surface with the rod part.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: November 30, 2021
    Assignee: YOUNG DONG TECH CO., LTD.
    Inventors: Chan Heon Yoon, Chul Ki Song
  • Publication number: 20210214917
    Abstract: An excavator pedal valve, including: a body part in which a flow path for controlling forward and backward traveling is formed in a front and a rear of an interior in a vertical direction; a cam part provided at an upper end of the body part and provided so as to be rotatable in a forward direction and a rear direction with respect to a central axis by driving of a pedal; a rod part provided in each of a front lower portion and a rear lower portion of the cam part to apply force in a vertical direction along the flow path of the body part; and a return elastic part provided in a lower portion of the rod part to return the rod part upward. A rotation part is formed at a lower portion of the cam part having a contact surface with the rod part.
    Type: Application
    Filed: February 9, 2018
    Publication date: July 15, 2021
    Applicant: YOUNG DONG TECH CO., LTD.
    Inventors: Chan Heon YOON, Chul Ki SONG