Patents by Inventor Nam-Sub Woo

Nam-Sub Woo 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).

  • Sludge suction apparatus for offshore structure
    Patent number: 8342823
    Abstract: Disclosed is a sludge suction apparatus for an offshore structure. The sludge suction apparatus includes a housing having an upper mounting hole and a lower mounting hole; a suction valve installed in the lower mounting hole in line with a suction hole to selectively suck sludge according to variation of internal pressure of the housing; an exhaust valve installed in the upper mounting hole to communicate with the exhaust hole and aligned coaxially with the suction valve to exhaust the sludge to an outside through the exhaust hole; a valve port coupled to an upper portion of the upper mounting hole and formed with a fixing groove coupled with an upper portion of the exhaust valve; and a piston assembly fixedly coupled with the coupling section and reciprocated in forward and rearward directions to operate the suction valve and the exhaust valve.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: January 1, 2013
    Assignee: Korea Institute of Geoscience and Mineral Resources
    Inventors: Young-Ju Kim, Deok Hwan Kim, So Keul Chung, Nam-Sub Woo
  • SLUDGE SUCTION APPARATUS FOR OFFSHORE STRUCTURE
    Publication number: 20110206547
    Abstract: Disclosed is a sludge suction apparatus for an offshore structure. The sludge suction apparatus includes a housing having an upper mounting hole and a lower mounting hole; a suction valve installed in the lower mounting hole in line with a suction hole to selectively suck sludge according to variation of internal pressure of the housing; an exhaust valve installed in the upper mounting hole to communicate with the exhaust hole and aligned coaxially with the suction valve to exhaust the sludge to an outside through the exhaust hole; a valve port coupled to an upper portion of the upper mounting hole and formed with a fixing groove coupled with an upper portion of the exhaust valve; and a piston assembly fixedly coupled with the coupling section and reciprocated in forward and rearward directions to operate the suction valve and the exhaust valve.
    Type: Application
    Filed: July 19, 2010
    Publication date: August 25, 2011
    Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES
    Inventors: Young-Ju KIM, Deok Hwan Kim, So Keul Chung, Nam-Sub Woo