Patents by Inventor Eui Joon Moon

Eui Joon Moon 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).

  • Flow force compensating stepped shape spool valve
    Patent number: 6957665
    Abstract: Disclosed is a flow force compensating spool valve having a flow force compensating protrusion ring at a supply channel of a sleeve on an outer circumference portion of a spool rod, and a hydraulic valve, a pneumatic valve, a three-way valve, and a four-way valve using the spool valve, in which the flow force can be compensated by a simple structure change of the spool without changing a structure of the sleeve.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: October 25, 2005
    Assignees: Agency for Defense Development, Hanwha Corporation
    Inventors: Weon Gyu Shin, Hyun Young Choi, Hyo Pil Shin, Eui Joon Moon, Jong Yeol Kim
  • Flow force compensating spool valve and hydraulic valve, pneumatic valve, three-way control valve, and four-way control valve using the same
    Publication number: 20040000347
    Abstract: Disclosed is a flow force compensating spool valve having a flow force compensating protrusion ring at a supply channel of a sleeve on an outer circumference portion of a spool rod, and a hydraulic valve, a pneumatic valve, a three-way valve, and a four-way valve using the spool valve, in which the flow force can be compensated by a simple structure change of the spool without changing a structure of the sleeve.
    Type: Application
    Filed: February 20, 2003
    Publication date: January 1, 2004
    Applicants: Agency for Defense Development, Hanwha Corporation
    Inventors: Weon Gyu Shin, Hyun Young Choi, Hyo Pil Shin, Eui Joon Moon, Jong Yeol Kim