Patents by Inventor Yeol Hwa Lee

Yeol Hwa Lee 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: 7628354
    Abstract: An apparatus for deploying a wing of a guided missile comprises a fixed wing fixedly coupled to a body of a guided missile, a rotary wing rotatably coupled to the fixed wing, and a deploying portion for rotating the rotary wing into an unfolded state from a folded state by providing a torsion force to the rotary wing. In the apparatus, a folded degree of the rotary wing can be maximized.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: December 8, 2009
    Assignee: Agency for Defense Development
    Inventors: Yeol-Hwa Lee, Young-Sug Shin, Hae-Sug Yang, Cheol-Gyuh Hwang
  • Publication number: 20070102567
    Abstract: An apparatus for deploying a wing of a guided missile comprises a fixed wing fixedly coupled to a body of a guided missile, a rotary wing rotatably coupled to the fixed wing, and a deploying portion for rotating the rotary wing into an unfolded state from a folded state by providing a torsion force to the rotary wing. In the apparatus, a folded degree of the rotary wing can be maximized.
    Type: Application
    Filed: May 26, 2006
    Publication date: May 10, 2007
    Applicant: Agency For Defense Development
    Inventors: Yeol-Hwa Lee, Young-Sug Shin, Hae-Sug Yang, Cheol-Gyuh Hwang
  • Patent number: 7041934
    Abstract: A micro-welder, by which a superfine wire such as a lead wire can be welded on a desired position of a parent material with a minimum welding area, including: a power source having a capacitor-charging device for generating a predetermined voltage and a voltage controller for adjusting the level of voltage output from the capacitor-charging device; a charge-storing member connected in parallel to the power source for storing the voltage output from the capacitor-charging device; a switching member connected in parallel to the charge-storing means for conducting the voltage output from the capacitor-charging device; a switch driving member for turning-on the switching member; and a welding circuit connected in serial to the switching member.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: May 9, 2006
    Assignee: Agency for Defense Development
    Inventors: Yeol-Hwa Lee, Seong-Wan Koo, Jong-Hak Choi
  • Patent number: 6837614
    Abstract: A heat-flux gage, a manufacturing method and a manufacturing device thereof which are improved from circular foil heat-flux gage disposed in ASTM E511 comprise: a cylindrical body having a receiving space therein, and a foil mounting hole on one end thereof; a foil including a heat absorption surface, an inner surface facing the heat absorption surface, and a radiant side surface connecting the heat absorption surface and the inner surface, wherein the inner surface faces toward the receiving space and the radiant side surface is contacted to a side surface of the foil mounting hole; a foil lead wire connected on a center of the inner surface of the foil; a body lead wire connected to an opposite end of the foil mounting hole on the cylindrical body; and a filler filled in the inner receiving space, to prevent the foil lead wire from being damaged by fixing the foil lead wire.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: January 4, 2005
    Assignee: Agency For Defence Development
    Inventors: Yeol Hwa Lee, Seong Wan Koo, Jong Hak Choi
  • Publication number: 20040000537
    Abstract: A micro-welder, by which a superfine wire such as a lead wire can be welded on a desired position of a parent material with a minimum welding area, including: a power source having a capacitor-charging device for generating a predetermined voltage and a voltage controller for adjusting the level of voltage output from the capacitor-charging device; a charge-storing member connected in parallel to the power source for storing the voltage output from the capacitor-charging device; a switching member connected in parallel to the charge-storing means for conducting the voltage output from the capacitor-charging device; a switch driving member for turning-on the switching member; and a welding circuit connected in serial to the switching member.
    Type: Application
    Filed: June 2, 2003
    Publication date: January 1, 2004
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Yeol-Hwa Lee, Seong-Wan Koo, Jong-Hak Choi
  • Publication number: 20030198276
    Abstract: A heat-flux gage, a manufacturing method and a manufacturing device thereof which are improved from circular foil heat-flux gage disposed in ASTM E511 comprise: a cylindrical body having a receiving space therein, and a foil mounting hole on one end thereof; a foil including a heat absorption surface, an inner surface facing the heat absorption surface, and a radiant side surface connecting the heat absorption surface and the inner surface, wherein the inner surface faces toward the receiving space and the radiant side surface is contacted to a side surface of the foil mounting hole; a foil lead wire connected on a center of the inner surface of the foil; a body lead wire connected to an opposite end of the foil mounting hole on the cylindrical body; and a filler filled in the inner receiving space, to prevent the foil lead wire from being damaged by fixing the foil lead wire.
    Type: Application
    Filed: March 24, 2003
    Publication date: October 23, 2003
    Applicant: Agency For Defense Development
    Inventors: Yeol Hwa Lee, Seong Wan Koo, Jong Hak Choi