Patents by Inventor Jong Bok CHANG

Jong Bok CHANG 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).

  • Hinge for opening/closing door
    Patent number: 10626651
    Abstract: The present invention provides a hinge for opening/closing a door, comprising: left and right plates respectively coupled to the door and a door frame; a main housing formed in the center of any one of the left and right plates; upper and lower auxiliary housings respectively formed at the top and the bottom of the other of the left and right plates; a support member coupled to and linked with the main housing by penetrating into any one of the upper and lower auxiliary housings; a guide member coupled to and linked with the other of the upper and lower auxiliary housings, formed by inserting a portion thereof into the main housing, and having a screw hole for adjustment; an adjustment member having a screw bar for adjustment and a screw bar for fixing, which are formed to have different screwing directions as a right-handed screw and a left-handed screw, and having an adjustment space for interference prevention between the screw bar for adjustment and the screw bar for fixing; a fixing member for fixing the
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: April 21, 2020
    Inventor: Jong Bok Chang
  • HINGE FOR OPENING/CLOSING DOOR
    Publication number: 20180363347
    Abstract: The present invention provides a hinge for opening/closing a door, comprising: left and right plates respectively coupled to the door and a door frame; a main housing formed in the center of any one of the left and right plates; upper and lower auxiliary housings respectively formed at the top and the bottom of the other of the left and right plates; a support member coupled to and linked with the main housing by penetrating into any one of the upper and lower auxiliary housings; a guide member coupled to and linked with the other of the upper and lower auxiliary housings, formed by inserting a portion thereof into the main housing, and having a screw hole for adjustment; an adjustment member having a screw bar for adjustment and a screw bar for fixing, which are formed to have different screwing directions as a right-handed screw and a left-handed screw, and having an adjustment space for interference prevention between the screw bar for adjustment and the screw bar for fixing; a fixing member for fixing the
    Type: Application
    Filed: December 9, 2016
    Publication date: December 20, 2018
    Inventor: Jong Bok CHANG