Patents by Inventor Hua-Chi Huang

Hua-Chi Huang 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).

  • Publication number: 20150129142
    Abstract: A stringless curtain structure has a curtain body, a string rolling mechanism and two breaking units, wherein weight of a spring in the string rolling mechanism and a weighted lower beam is balanced, the user can push/pull the weighted lower beam to control a curtain of the curtain body to eliminate the exposure of the string, so little children would not play with the string to lead to dangerous situation. Furthermore, the breaking unit is disposed at each sides of the string rolling mechanism, so when the curtain needs to be positioned, the friction between the string and the breaking units can be used to enhance the precision of the positioning of the curtain body.
    Type: Application
    Filed: November 11, 2013
    Publication date: May 14, 2015
    Inventor: Hua-Chi Huang
  • Patent number: 8936062
    Abstract: A curtain structure without drawstring may include a curtain unit, a string scrolling base and an upper cover. The string scrolling base has a shell disposed in the base of the curtain unit, center portion of the shell having a shaft, both sides of which having a positioning shaft, and a line slot formed on both side walls of the positioning shaft, wherein upper periphery of rotating base has driving teeth having at least one groove, restricting guiding groove and arc rail groove on top surface thereof, and a driving unit is disposed on the positioning shafts, the driving unit having a rod to secure the string collecting bodies, and conjugating teeth are linked with the driving teeth of the rotating base; and an upper cover having a restricting groove corresponding to the rotating base, and a ball restricted in the groove of the restricting groove and the rotating base.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: January 20, 2015
    Inventor: Hua-Chi Huang
  • Publication number: 20140262063
    Abstract: A curtain structure without drawstring may include a curtain unit, a string scrolling base and an upper cover. The string scrolling base has a shell disposed in the base of the curtain unit, center portion of the shell having a shaft, both sides of which having a positioning shaft, and a line slot formed on both side walls of the positioning shaft, wherein upper periphery of rotating base has driving teeth having at least one groove, restricting guiding groove and arc rail groove on top surface thereof, and a driving unit is disposed on the positioning shafts, the driving unit having a rod to secure the string collecting bodies, and conjugating teeth are linked with the driving teeth of the rotating base; and an upper cover having a restricting groove corresponding to the rotating base, and a ball restricted in the groove of the restricting groove and the rotating base.
    Type: Application
    Filed: March 18, 2013
    Publication date: September 18, 2014
    Inventor: Hua-Chi Huang