Patents by Inventor Sung Dong Jang

Sung Dong Jang 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).

  • Linear valve position measuring apparatus
    Patent number: 8302624
    Abstract: There is provided an apparatus for measuring a position of a linear type valve which is open/shut by operation of a hydraulic cylinder. More particularly, the apparatus more accurately measures a valve position by outputting a rotation angle of a rotation sleeve which rotates by being operatively connected to a hydraulic cylinder which moves linearly, and by calculating a vertical movement distance of a valve gate which changes in proportion to the rotation angle. Further, since the structure of the apparatus is very simple, the cost of production is significantly reduced. In addition, for use, the apparatus is installed on the hydraulic cylinder by a simple method.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: November 6, 2012
    Assignee: RPM Tech Co., Ltd.
    Inventors: Byung Hoo Noh, Hee Goo Sim, Sung Dong Jang
  • Linear valve position measuring apparatus
    Publication number: 20100276016
    Abstract: There is provided an apparatus for measuring a position of a linear type valve which is open/shut by operation of a hydraulic cylinder. More particularly, the apparatus more accurately measures a valve position by outputting a rotation angle of a rotation sleeve which rotates by being operatively connected to a hydraulic cylinder which moves linearly, and by calculating a vertical movement distance of a valve gate which changes in proportion to the rotation angle. Further, since the structure of the apparatus is very simple, the cost of production is significantly reduced. In addition, for use, the apparatus is installed on the hydraulic cylinder by a simple method.
    Type: Application
    Filed: April 22, 2010
    Publication date: November 4, 2010
    Inventors: Byung Hoo Noh, Hee Goo Sim, Sung Dong Jang