Patents Examined by Thuy U. Tran
  • Patent number: 6739433
    Abstract: A tension member for an elevator system has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure and an increased flexibility as compared to conventional elevator ropes. As a result, smaller sheaves may be used with this type of tension member. In a particular embodiment, the tension member includes a plurality of individual load carrying cords encased within a common layer of coating. The coating layer separates the individual cords and defines an engagement surface for engaging a traction sheave.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: May 25, 2004
    Assignee: Otis Elevator Company
    Inventors: Pedro S. Baranda, Ary O. Mello, Hugh J. O'Donnell
  • Patent number: 6206143
    Abstract: An elevator landing apparatus including a detector mounted on one of a doorsill part of a cage of an elevator provided in an elevator shaft and a doorsill part of an elevator hall, and a detected member mounted on the other of the doorsill part of the elevator hall and the doorsill part of the cage. The detector and detected member are configured to position the cage at a position where the doorsill part of the elevator hall and the doorsill part of the cage are flush with each other when the detector and the detected member are opposite each other. The one of the detector or the detected member provided on the doorsill part of the cage is mounted along a side of the cage and facing toward a side of the elevator shaft.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: March 27, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kosei Kammura