Patent ID: 7481299
Filing Date: 2009-01-27
Classification: B66B

Abstract:
1. An elevator, comprising: an elevator car; a set of hoisting ropes; a traction sheave; and a compensating device; wherein the elevator car is at least partially suspended using the set of hoisting ropes, wherein the set of hoisting ropes includes at least one rope or a number of parallel ropes, wherein the traction sheave moves the elevator car using the set of hoisting ropes, wherein the set of hoisting ropes includes first, second, third, and fourth rope portions, wherein the compensating device acts in substantially opposite directions on the first and second rope portions in order to equalize rope tension, equalize rope elongation, or equalize rope tension and equalize rope elongation, wherein the compensating device includes at least one slack rope prevention means for preventing uncontrolled slackening of the set of hoisting ropes, uncontrolled motion of the compensating device, or uncontrolled slackening of the set of hoisting ropes and uncontrolled motion of the compensating device, wherein the elevator car includes one or more diverting pulleys from which the third rope portions extend upwards from the elevator car, and wherein the elevator car includes one or more diverting pulleys from which the fourth rope portions extend downwards from the elevator car.