Patents by Inventor Jong Gwon Choi

Jong Gwon 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).

  • Emergency stop apparatus and method
    Patent number: 10490370
    Abstract: Provided are an emergency stop apparatus including a switch unit installed in a work space, electrically connected to a facility, and operable by pulling and a wire which is disposed in the work space so that tension is applied and of which at least one side is detachably mounted on the switch unit and an emergency stop method for quickly stopping the facility at a desired position within the work space in a manner of pulling or pushing the wire.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: November 26, 2019
    Assignee: AP SYSTEMS INC.
    Inventors: Kwang Soo Kim, Jong Gwon Choi, Hyun Sik Yun, Joo Hyeok Baek
  • EMERGENCY STOP APPARATUS AND METHOD
    Publication number: 20180240623
    Abstract: Provided are an emergency stop apparatus including a switch unit installed in a work space, electrically connected to a facility, and operable by pulling and a wire which is disposed in the work space so that tension is applied and of which at least one side is detachably mounted on the switch unit and an emergency stop method for quickly stopping the facility at a desired position within the work space in a manner of pulling or pushing the wire.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 23, 2018
    Inventors: Kwang Soo KIM, Jong Gwon CHOI, Hyun Sik YUN, Joo Hyeok BAEK
  • Steel frame structure using U-shaped composite beam
    Patent number: 8915042
    Abstract: A steel frame structure includes brackets connected to columns to allow the columns to be connected to a girder. Each bracket includes a U-shaped plate having a bottom plate, side plates extended upwardly perpendicularly from both ends of the bottom plate, and base plates extended outwardly from the side plates, a vertical plate welded perpendicularly to the center of the bottom plate of the U-shaped plate in such a manner as to be parallel to the side plates, and a horizontal plate welded to the top end of the vertical plate in such a manner as to be parallel to the bottom plate of the U-shaped plate. The girder has a generally U-shaped section.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: December 23, 2014
    Assignees: DRB Holding Co., Ltd., Ssangyoung Engineering & Construction Corporation, Dongyang Consulting & Structural Engineers Co., KCC Engineering & Construction Co., Ltd., Samwoo Space Architects & Engineering Ltd., CM Partners Architecture Firm Co., Ltd., Firsteceng Co., Ltd., Lotte Engineering & Construction, Research Institute of Industrial Science & Technology, GS Engineering & Construction
    Inventors: Tae Sang Ahn, Young Joo Kim, Dong Woon Jang, Seung Ryeol Cha, Hoon Kim, Yong Chan Jung, Geum Seok Jeon, Dong Beom Song, Jae Hoon Bae, Jin Won Kim, Won gyun Seok, Seong Hun Jang, Hyeon Su Jeon, Jae Seon Hwang, Jong Gwon Choi, Hong Gi Park
  • STEEL FRAME STRUCTURE USING U-SHAPED COMPOSITE BEAM
    Publication number: 20130283721
    Abstract: A steel frame structure includes brackets connected to columns to allow the columns to be connected to a girder. Each bracket includes a U-shaped plate having a bottom plate, side plates extended upwardly perpendicularly from both ends of the bottom plate, and base plates extended outwardly from the side plates, a vertical plate welded perpendicularly to the center of the bottom plate of the U-shaped plate in such a manner as to be parallel to the side plates, and a horizontal plate welded to the top end of the vertical plate in such a manner as to be parallel to the bottom plate of the U-shaped plate. The girder has a generally U-shaped section.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 31, 2013
    Inventors: Tae Sang Ahn, Young Joo Kim, Dong Woon Jang, Seung Ryeol Cha, Hoon Kim, Yong Chan Jung, Geum Seok Jeon, Dong Beom Song, Jae Hoon Bae, Jin Won Kim, Won gyun Seok, Seong Hun Jang, Hyeon Su Jeon, Jae Seon Hwang, Jong Gwon Choi, Hong Gi Park