Patents by Inventor Tai Tien Chiu

Tai Tien Chiu 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).

  • Elevator door control mechanism
    Patent number: 5839543
    Abstract: An elevator includes a housing having three door panels and a lever swung to operate the door panels. A casing is secured on top of the housing and has three tracks for slidably receiving three slides which are secured to the door panels. A wire couples two of the slides to the casing for guiding the slides to move relative to the tracks, and another wire couples the other slide and the middle slide for guiding the other slide to move relative to the middle slide and for allowing the door panels to be moved safely and smoothly.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: November 24, 1998
    Inventor: Tai Tien Chiu