Patent ID: 8613343
Filing Date: 2013-12-24
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 supported using the set of hoisting ropes, wherein the set of hoisting ropes includes at least one rope, wherein the traction sheave moves the elevator car using the set of hoisting ropes, wherein the set of hoisting ropes includes first and second rope portions, wherein the elevator car includes one or more first diverting pulleys from which the first rope portions extend upward, wherein the elevator car includes one or more second diverting pulleys from which the second rope portions extend downward, wherein the first rope portions apply a first rope tension to the traction sheave, wherein the second rope portions apply a second rope tension to the traction sheave, the second rope tension being different from the first rope tension, wherein the compensating device applies an auxiliary force substantially in a same direction as the first rope tension, wherein the compensating device includes: wherein the first portions further extend from one of the one or more first diverting pulleys to the third diverting pulley, wherein the first portions further extend from the third diverting pulley to the fourth pulley, wherein the second portions further extend from one of the one or more second diverting pulleys to the fourth diverting pulley, wherein a force in addition to the first rope tension and second rope tension is arranged in the compensating system, wherein the force is applied in essentially in a same direction as the first rope tension, and wherein the force is caused by weight added to the compensating device.