Patents by Inventor Kuei-Lin Yen

Kuei-Lin Yen 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).

  • Descent device
    Patent number: 5394960
    Abstract: A descent device includes a load carrier, a winder unit with a coil of cable for suspending the load carrier in mid-air so as to raise or lower the load carrier, and a retarding unit for impeding downward movement of the load carrier so that the load carrier can move downward at a lower speed to ensure safety of the occupants.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: March 7, 1995
    Inventor: Kuei-Lin Yen