Patents by Inventor Chang Hee CHUN

Chang Hee CHUN 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: 20200398145
    Abstract: The present invention relates to an inclined structure of a court floor having a new structure for easily collecting automatically supplying balls used in practice. According to an inclined structure of a court floor according to the present disclosure, the ball used for practice can be rolled down outwardly along the slope of the court, and then be collected in the collecting ditch and gathered in one place, so there is no need to collect scattered balls separately.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Inventors: Byoung Koo CHO, Chang Suk HAN, Chang Hee CHUN, Bo Sub KIM, Yeon Uk JEONG
  • Patent number: 10806990
    Abstract: The present invention relates to an inclined structure of a court floor having a new structure for easily collecting automatically supplying balls used in practice. According to an inclined structure of a court floor according to the present disclosure, the ball used for practice can be rolled down outwardly along the slope of the court, and then be collected in the collecting ditch and gathered in one place, so there is no need to collect scattered balls separately.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: October 20, 2020
    Inventors: Byoung Koo Cho, Chang Suk Han, Chang Hee Chun, Bo Sub Kim, Yeon Uk Jeong
  • Publication number: 20200009448
    Abstract: The present invention relates to an inclined structure of a court floor having a new structure for easily collecting automatically supplying balls used in practice. According to an inclined structure of a court floor according to the present disclosure, the ball used for practice can be rolled down outwardly along the slope of the court, and then be collected in the collecting ditch and gathered in one place, so there is no need to collect scattered balls separately.
    Type: Application
    Filed: July 6, 2018
    Publication date: January 9, 2020
    Inventors: Byoung Koo CHO, Chang Suk HAN, Chang Hee CHUN, Bo Sub KIM, Yeon Uk JEONG
  • Publication number: 20170348582
    Abstract: A ball supply apparatus includes: a housing coupled to the upper portion of the column structure, wherein a top portion of housing is partially opened, wherein the housing is divided by a partition into a ball storage portion and a ball discharge portion, wherein a bottom face of the ball storage portion is inclined downward toward the ball discharge portion, wherein a first opening is formed in a bottom of the ball discharge portion, and a second opening is formed in the partition at a lower portion thereof; a rotatable opening/closing plate rotatably coupled to the partition, wherein the rotatable opening/closing plate is configured to rotate to open/close the second opening; and a ball discharge tube rotatably coupled to the ball discharge portion at the first opening, wherein the ball discharge tube ball-communicates with the ball discharge portion via the first opening.
    Type: Application
    Filed: January 15, 2016
    Publication date: December 7, 2017
    Inventors: Byoung Koo CHO, Chang Suk HAN, Chang Hee CHUN