Patent ID: 7448474
Filing Date: 2008-11-11
Classification: B66B

Abstract:
1. A method for delivering an elevator, the elevator including at least an elevator car, a counterweight, hoisting ropes, a drive machine, a traction sheave, and a rope sheave, the method comprising: selecting a roping arrangement according to a weight of the elevator car, independent of the drive machine, the traction sheave, and the rope sheave; wherein if the weight of the elevator car does not require the use of a double-wrap roping arrangement, then a single-wrap roping arrangement is used so that the hoisting ropes are passed around the traction sheave and the rope sheave to guide the hoisting ropes and dampen vibrations, and wherein if the weight of the elevator car requires the use of the double-wrap roping arrangement, then the double-wrap roping arrangement is used so that the hoisting ropes are passed at least twice around the traction sheave and at least once around the rope sheave to guide the hoisting ropes and dampen vibrations.