Class / Patent application number | Description | Number of patent applications / Date published |
187264000 | With separate biasing means maintaining cable tension | 13 |
20090095574 | Restraint Device for Traction Sheaves - A restraint device is disclosed that limits the movement of the cable or rope relative to the traction, thus reducing or eliminating the popping noise associated with the cable or rope snapping back against the traction sheave. In one embodiment, the restraint device comprises a molded component that is fitted to encompass the region of the sheave where separation of the wire rope from the sheave is most likely to occur. The restraint device may be mounted so that it is removable and replaceable with minimal dismantling of the hoist containing the sheave. The restraint device may be reversible so that one restraint device may by used for at least two cycles before being replaced. Indication of the need for replacement may be provided by including a second color material at the depth where wear reaches the allowable limit, thereby providing a visual signal to initiate replacement as seen during service. | 04-16-2009 |
20090229922 | System and Method to Minimize Rope Sway in Elevators - A system and method for minimizing compensation rope sway by altering the natural frequency of compensation ropes using servo actuators. The rope sway may be minimized by moving the compensation sheave to adjust the tension of the compensation rope or adjusting the position of the termination of a compensation rope to account for changes in the position of a structure. Servo actuators may also be used to re-level the elevator car to account for rope stretch. | 09-17-2009 |
20100089706 | Arrangement for compensating the rope forces of a traction sheave elevator - The object of the invention is an arrangement for compensating the rope forces of a traction sheave elevator, which elevator comprises at least a hoisting machine ( | 04-15-2010 |
20110094831 | DEVICE FOR STRETCHING COMPENSATION IN LIFT CABLES - The invention relates to a device for stretching compensation in lift cables, arranged within a lift unit, with a lift shaft, a cabin ( | 04-28-2011 |
20120247877 | ELEVATOR - An elevator may include an elevator car, a set of hoisting ropes, a traction sheave, and a compensating device. The set of hoisting ropes may include first and second rope portions. The elevator car may include one or more first diverting pulleys from which the first rope portions extend upward. The elevator car may include one or more second diverting pulleys from which the second rope portions extend downward. The first rope portions may be under a first rope tension. The second rope portions may be under a second rope tension that is different from the first rope tension. The compensating device may act in substantially opposite directions on the first and second rope portions. The compensating device may produce an auxiliary force acting substantially in a same direction as the first rope tension. | 10-04-2012 |
20140166406 | ELEVATOR WITH COMPENSATION ROPE - An elevator includes at least one elevator car and a counterweight which are at least partly suspended on hoisting ropes and a drive machine driving a traction sheave engaging the hoisting ropes for moving the elevator car along guide rails in an elevator shaft, which elevator further includes a compensation rope. The compensation rope is led upwards to an upper part of the elevator shaft and from there aside to a balancing area located aside of the travel paths of the car and counterweight. This solution is particularly adapted for high travel elevators facing horizontal forces during operation as e.g. ship elevators. Collision of compensation ropes are avoided in the area below the car and counterweight paths which could affect the elevator safety when subjected to high horizontal forces, e.g. during rough sea. | 06-19-2014 |
20150122587 | ELEVATOR - A counterweightless elevator includes a hoistway, a car vertically movable in the hoistway, one or more suspension ropes, a rotatable drive member engaging said suspension rope(s), each of the suspension rope(s) having a first rope section on the first side of the drive member and a second rope section on the second side of the drive member, and each rope section being connected to the car, said first rope section suspending the car, and a tightening device arranged to tighten the second rope section. Each of said rope(s) is belt-like and includes a load bearing member or a plurality of load bearing members, which load bearing member(s) is/are made of composite material including reinforcing fibers embedded in a polymer matrix, which reinforcing fibers are carbon fibers. | 05-07-2015 |
20150122588 | ELEVATOR - An elevator has an elevator car and a counterweight suspended by hoisting ropes, which hoisting ropes are driven by a drive machine via a traction sheave, which elevator further includes a compensation rope in the lower shaft area between the car and the counterweight, which compensation rope runs around a compensation sheave arrangement in the shaft bottom, which elevator has a compensation device for the compensation of rope elongation. The compensation device includes a diverting pulley for the compensation rope connected to the counterweight, whereby the compensation rope is arranged to run over the diverting pulley, a tension weight connected with the free end of the compensation rope, a rope clamp arranged on the compensation rope and a clamp support for connecting the rope clamp to the counterweight. A compensation device is provided for the rope elongation which necessitates less vertical space in the elevator shaft. | 05-07-2015 |
20150368068 | COMPENSATION ELEMENT WITH BLOCKING DEVICE - An elevator installation has a vertical elevator shaft, an elevator car vertically displaceable in a vertical direction in the shaft, a load-bearing device connected to the car and guided to a counterweight via a drive pulley, and a compensation element connected to the car and guided to the counterweight. A blocking device selectively secures the compensation element in the elevator installation such that, with the compensation element secured between the car and the blocking device, a tensioning force can be generated in the compensation element. The blocking device is used in a method for positioning the car in a desired position in the elevator installation. | 12-24-2015 |
20160090272 | ELEVATOR - An elevator, which includes a hoistway; and an elevator car vertically movable in the hoistway; and a counterweight vertically movable in the hoistway; and a number of upper rope wheels (in particular one or more) mounted higher than the car and counterweight, and a number of first ropes interconnecting the elevator car and counterweight, each of the more ropes passing around the one or more upper rope wheels; and a number of lower rope wheels mounted lower than the car and counterweight; and second ropes interconnecting the elevator car and counterweight, each passing around one or more of the lower rope wheels. The lower rope wheels include one or more first lower rope wheels; and one or more second lower rope wheels above the one or more first rope wheels. The second ropes include a first set of ropes forming a first U-shaped loop of ropes hanging from the car and counterweight and passing around the one or more first lower rope wheels; and a second set of ropes forming a second U-shaped loop of ropes hanging from the car and counterweight inside the first loop of ropes and passing around the one or more second lower rope wheels. | 03-31-2016 |
187265000 | Includes spring supported pulley | 3 |
20130118840 | COMPENSATION DEVICE AND ELEVATOR - A compensation device of a traction sheave elevator is provided. The elevator includes a compensation rope running from an elevator car to a compensation sheave of the compensation device located in the lowermost part of the elevator shaft around which the compensation rope runs. The compensation sheave is vertically guided with respect to the shaft bottom via a guiding structure, which allows a vertical movement of the axis of the compensation sheave. The guiding structure includes at least one scissor joint arrangement having its lower end adapted to be connected with an elevator shaft bottom and its upper end being connected with the compensation sheave axis. An elevator includes such kind of compensation device. Vertical movement of the axis of a compensation sheave can be obtained with a very low shaft height requirement. | 05-16-2013 |
20140083802 | TENSIONING ARRANGEMENT FOR A TRACTION MEANS OF AN ELEVATOR - The object of the invention is a tensioning arrangement for a traction means of an elevator, which arrangement comprises at least an elevator car configured to move up and down in an elevator hoistway and at least one or more compensating weights, which are for their part connected to support the elevator car by the aid of their own support means, such as by the aid of ropes or belts and also of diverting pulleys, and a hoisting machine provided with at least one traction sheave or corresponding, and also at least one traction means ( | 03-27-2014 |
20150298939 | ELEVATOR - An elevator comprising
| 10-22-2015 |