Patents by Inventor Yi-Jia Wu

Yi-Jia Wu 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: 20150051052
    Abstract: Disclosed is a flywheel device of a bicycle, including a flywheel means, a clutching means and a speed transforming means. The flywheel means is installed in rotation with the frame that is placed between the driving wheel and the driven wheel. The clutching means is engaged or disengaged between the flywheel means and the driving wheel according to an engaging state and a disengaging state thereof, wherein, a rotational energy is transferable between the flywheel means and the driving wheel during in the engaging state. The speed transforming means is connected between the flywheel means and the driving wheel by means of the clutching means to adjust a transmission ratio in relation to the driving wheel and the flywheel means.
    Type: Application
    Filed: November 25, 2013
    Publication date: February 19, 2015
    Inventors: Yun-Yin Cheng, Yi-Jia Wu
  • Publication number: 20030196399
    Abstract: An architectural construction assembly includes a plurality of construction units, each of which has opposite first and second surfaces and a plurality of side faces that are transverse to the first and second surfaces. At least one of the side faces of each of the construction units is formed with at least one protrusion which projects outwardly therefrom so as to be spaced apart from one of the side faces of one of the construction units which comes into contact with the protrusion.
    Type: Application
    Filed: March 18, 2003
    Publication date: October 23, 2003
    Inventor: Yi-Jia Wu
  • Patent number: 6450293
    Abstract: A fire escape device includes first and second cable drums rotatably mounted on a mounting shaft and spaced apart from each other axially, first and second support cables respectively wound around hub portions of the cable drums, and a coupling mechanism disposed between the cable drums to interconnect releasably the same. The first support cable is unreeled to generate a jerking force to permit rotation of the second cable drum with the first cable drum. Unreeling of the second support cable can rotate the first and second cable drums to reel the first support cable. Thus, alternately lowering people one after another from an elevated floor to a safe location can be achieved.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: September 17, 2002
    Inventor: Yi-Jia Wu
  • Publication number: 20020108812
    Abstract: A fire escape device includes first and second cable drums rotatably mounted on a mounting shaft and spaced apart from each other axially, first and second support cables respectively wound around hub portions of the cable drums, and a coupling mechanism disposed between the cable drums to interconnect releasably the same. The first support cable is unreeled to generate a jerking force to permit rotation of the second cable drum with the first cable drum. Unreeling of the second support cable can rotate the first and second cable drums to reel the first support cable. Thus, alternately lowering people one after another from an elevated floor to a safe location can be achieved.
    Type: Application
    Filed: October 29, 2001
    Publication date: August 15, 2002
    Inventor: Yi-Jia Wu