Patents by Inventor Yi Jia

Yi Jia 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).

  • Fire escape device
    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
  • FIRE ESCAPE DEVICE
    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