Patents Assigned to Kyoungdo Co., Ltd.
  • Patent number: 11116281
    Abstract: A ventilation sole for footwear, the sole including: a communicating vent-hole through which the inside and outside of footwear communicate with each other to allow air to flow; and a valve selectively opening and closing the communicating vent-hole, wherein the valve includes: a housing module configured to have opposite ends being open such that a channel is provided therein to communicate with the communicating vent-hole; an open-close module configured with a first closing surface and a first through-hole; and a rotation module configured with a second closing surface and a second through-hole, and rotating to move a position of the second through-hole. Accordingly, a wearer can easily open and close the valve by rotating the rotation module according to the intention of the wearer, whereby air inside and outside the footwear can be circulated selectively and optimal foot conditions can be improved.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 14, 2021
    Assignee: Kyoungdo Co., Ltd.
    Inventor: Chun Bae Park
  • Patent number: 7726041
    Abstract: A ventilation sole for shoes is disclosed. The ventilation sole of the present invention has a vent hole (110), which is formed in a sidewall of the sole, an air supply hole, which is formed in the upper surface of the sole (100), and an air passage, which communicates the air supply hole with the vent hole, such that outside air is supplied into the shoe. Furthermore, the present invention is characterized in that a vent hole control device (200), which is opened or closed by a knocking operation, is installed in the vent hole (110) such that part thereof protrudes outside the sole (100), thus making it possible for a user to selectively open or close the vent hole (110), as necessary.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: June 1, 2010
    Assignee: Kyoungdo Co., Ltd.
    Inventors: Young Hwa Woo, Yung Ho Kim
  • Publication number: 20090113768
    Abstract: A ventilation sole for shoes is disclosed. The ventilation sole of the present invention has a vent hole (110), which is formed in a sidewall of the sole, an air supply hole, which is formed in the upper surface of the sole (100), and an air passage, which communicates the air supply hole with the vent hole, such that outside air is supplied into the shoe. Furthermore, the present invention is characterized in that a vent hole control device (200), which is opened or closed by a knocking operation, is installed in the vent hole (110) such that part thereof protrudes outside the sole (100), thus making it possible for a user to selectively open or close the vent hole (110), as necessary.
    Type: Application
    Filed: January 5, 2009
    Publication date: May 7, 2009
    Applicant: Kyoungdo Co., Ltd.
    Inventors: Young Hwa Woo, Yung Ho Kim