Patents by Inventor Liou Da-Tan

Liou Da-Tan 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: 4941549
    Abstract: A fire escaping apparatus being of a small bulk, requiring no energy source and capable of continuously transporting escaping persons is provided. The apparatus includes a housing attached to a place from where relevant persons can escape a fire, a hollow active shaft rotatably mounting therein a following shaft and securing thereon a driving member, an escaping loop rope positively circulating on the periphery of the driving member, a speed-increasing mechansim mounted between the active and following shafts, and a speed-limiting mechanism mounted on the following shaft so that the escaping person grasping on the rope can be rapidly and safely transported from the place to a ground surface.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: July 17, 1990
    Inventors: Liou Da-Tan, Chang Shiou-Huey