Patents by Inventor Duck Jo Jun

Duck Jo Jun 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).

  • Patent number: 6412750
    Abstract: A valve system for fluid pipes is disclosed. This valve system is designed to be operable using pneumatic pressure or using another means, such as a valve control lever or fluid pressure, in place of pneumatic pressure and is designed to be controlled easily and precisely. The valve body (20) is thus movable within the passage (13) while minimizing frictional force between the valve body and the valve housing (10). The valve control lever (50) is operated in conjunction with the annular guide groove (24) formed on the circumferential external surface of the pressure actuated flange (25) of the valve body (20). In such a case, the linear moving direction and moving distance of the valve body is determined by the rotating direction and rotating angle of the lever (50). The valve system of this invention also has a rotor (40) used for centrifugally forcing the fluid introduced into the passage. A fluid guide rod (45) axially extends along the center of the passage, thus guiding the flow of fluid.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: July 2, 2002
    Assignee: Se Woo Conval Co., Ltd.
    Inventors: Duck Jo Jun, Yung Gee Do