Equalizes Tension In, Or Length Of, Plural Linking Cables Patents (Class 187/412)
  • Patent number: 5492201
    Abstract: A method and an apparatus for installing and balancing an elevator car is disclosed. The method for installing and balancing an elevator car situated in a hoistway where cables attach to the car, is characterized by the following steps: providing an adjustable connector attached to the elevator car having two degrees of adjustable motion; positioning the connector to a desired location underneath the car, connecting the cables to the adjustable connector, and balancing the elevator car with an adjustable weight which is also attached to the underside of the elevator car. The apparatus for installing and balancing an elevator car having cables attached to its underside includes: (1) an adjustable connector attached to the elevator car having two degrees of adjustable motion; and, (2) an adjustable weight which attaches to the underside of the elevator car and is used to balance the car.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: February 20, 1996
    Assignee: Otis Elevator Company
    Inventors: Richard J. Ericson, T. Thomas Suchodolski, Minglun Qiu
  • Patent number: 5353893
    Abstract: Elevator compensation ropes are attached to the elevator cab frame by means of a wedge block which is mounted on a lower portion of the frame. The wedge block has a plurality of separate wedge-shaped passages thereon through which each of the compensation ropes passes upwardly. The ropes are looped over V-shaped inserts and then passed downwardly through the passages. The inserts are dropped into respective ones of the passages so as to wedge the ropes against the wedge block. The counterweight is connected to the compensation ropes with a plurality of rope deflectors which guide the ropes from a fanned out series of thimble rods to a closely spaced parallel rope array which extends from the counterweight into the hoistway pit.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: October 11, 1994
    Assignee: Otis Elevator Company
    Inventors: Lu Sun, Joseph R. Faust