Patents by Inventor Young Yong CHOI

Young Yong CHOI 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).

  • Cart with easy accommodation of handle by spring
    Patent number: 9561815
    Abstract: The present invention relates to a cart with easy accommodation of a handle by a spring, comprising: a loading plate in which articles are loaded at the upper portion, a cut groove is vertically penetrated to be formed at the front end, the front end is opened at the lower portion so as to be horizontally penetrated to the back end, and a space part is formed to communicate with the cut groove; driving wheels provided at the lower part of the loading plate; a cover to be coupled to the lower part of the space part; a handle member accommodated in the space part so as to be moved to the front end of the loading plate, and rotated toward the cut groove so as to be exposed to the upper part of the loading plate; a stopper formed at the cut groove side in the space portion and preventing the separation of the handle member; and a spring unit comprising a fixture provided in the back of the space part, a rotation shaft provided at the fixture, and a spring wound to the rotation shaft and of which an end is connect
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: February 7, 2017
    Assignee: Sejin Engineering Co., Ltd.
    Inventor: Young Yong Choi
  • CART WITH EASY ACCOMMODATION OF HANDLE BY SPRING
    Publication number: 20160152257
    Abstract: The present invention relates to a cart with easy accommodation of a handle by a spring, comprising: a loading plate in which articles are loaded at the upper portion, a cut groove is vertically penetrated to be formed at the front end, the front end is opened at the lower portion so as to be horizontally penetrated to the back end, and a space part is formed to communicate with the cut groove; driving wheels provided at the lower part of the loading plate; a cover to be coupled to the lower part of the space part; a handle member accommodated in the space part so as to be moved to the front end of the loading plate, and rotated toward the cut groove so as to be exposed to the upper part of the loading plate; a stopper formed at the cut groove side in the space portion and preventing the separation of the handle member; and a spring unit comprising a fixture provided in the back of the space part, a rotation shaft provided at the fixture, and a spring wound to the rotation shaft and of which an end is connect
    Type: Application
    Filed: May 30, 2014
    Publication date: June 2, 2016
    Inventor: Young Yong CHOI