# US 2016/0251202 A1 · Elevator installation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0251202 A1 - Document ID: US20160251202A1 - Status: Published application - Kind: A1 - Application number: 15/025,822 - Filed: 2014-09-30 - Published: 2016-09-01 - Earliest claimed: 2013-09-30 - Assignees: Thyssenkrupp Elevator AG - Applicants: Thyssenkrupp Elevator AG - Inventors: Jörg Müller; Holger Zerelles; Bernd Altenburger; Ronald Dietze; Juri Schäfer - Web page: https://patentgrep.com/patent/US20160251202A1 ## CPC - B66B 11/0095: {where multiple cars drive in the same hoist way} - B66B 7/068: {Cable weight compensating devices} - B66B 9/00: Kinds or types of lifts in, or associated with, buildings or other structures (characterised by control systems B66B1/00; apparatus for raising or lowering persons on stages of theatres A63J5/12) - B66B 2009/006: {Ganged elevator} - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract An example elevator system may include a shaft in which a first elevator car and a second elevator car positioned below the first elevator car are separately movable up and down in a vertical direction along a common guideway. The first elevator car may be coupled to a first counterweight by first suspension ropes and by first compensation ropes, and the second elevator car may be coupled to a second counterweight by second suspension ropes and second compensation ropes. Further, first and second ends of the first compensation ropes may be secured to the first counterweight or to the first elevator car. The first compensation ropes may be guided around at least one roller positioned on a bottom surface of the first elevator car or on the counterweight. ## Claims ### Claim at position 1 -13. (canceled) ### Claim 14 An elevator system comprising: a shaft in which a first elevator car and a second elevator car are separately movable up and down in a vertical direction along a common guideway, wherein the first elevator car is coupled to a first counterweight by first suspension ropes that are guided by a first traction sheave positioned above the first and second elevator cars, and by first compensation ropes that are guided by a first guide pulley arrangement positioned below the first and second elevator cars, wherein the second elevator car is coupled to a second counterweight by second suspension ropes that are guided by a second traction sheave positioned above the first and second elevator cars, and by second compensation ropes that are guided by a second guide pulley arrangement positioned below the first and second elevator cars, wherein the first compensation ropes comprise a first rope end and a second rope end, with the first compensation ropes being secured by way of the first and the second rope ends either on the first counterweight or at a bottom surface of the first elevator car, wherein the first compensation ropes are guided around at least one roller disposed on the bottom surface of the first elevator car or on the first counterweight. ### Claim 15 (depends on 14) The elevator system of claim 14 wherein the first compensation ropes comprise two rope portions between which the second elevator car is positioned. ### Claim 16 (depends on 15) The elevator system of claim 15 wherein the two rope portions extend along opposite sides of the second elevator car. ### Claim 17 (depends on 15) The elevator system of claim 15 wherein the two rope portions extend outside a vertical projection surface of the first elevator car in the vertical direction from the first elevator car to the first guide pulley arrangement. ### Claim 18 (depends on 14) The elevator system of claim 14 wherein the first compensation ropes extend inside a vertical projection surface of the first counterweight in the vertical direction from the first counterweight to the first guide pulley arrangement. ### Claim 19 (depends on 14) The elevator system of claim 14 wherein the at least one roller is disposed below the first counterweight. ### Claim 20 (depends on 14) The elevator system of claim 14 wherein the first and the second rope ends of the first compensation ropes are secured on fastening members that protrude laterally outward from the first elevator car on opposite sides of the first elevator car. ### Claim 21 (depends on 14) The elevator system of claim 14 wherein the first guide pulley arrangement is positioned in a shaft pit of the shaft. ### Claim 22 (depends on 14) The elevator system of claim 14 wherein the first guide pulley arrangement comprises a plurality of guide rollers that are rotatably mounted on boundaries of the shaft. ### Claim 23 (depends on 14) The elevator system of claim 14 wherein the second compensation ropes are secured by a first rope end on the second elevator car and by a second rope end on the second counterweight. ### Claim 24 (depends on 14) The elevator system of claim 14 wherein the first suspension ropes are secured by a first rope end on the first elevator car and by a second rope end on the first counterweight. ### Claim 25 (depends on 14) The elevator system of claim 14 wherein the second suspension ropes comprise two suspension rope trains between which the first elevator car is positioned. ### Claim 26 (depends on 25) The elevator system of claim 25 further comprising fastening members that protrude laterally outward from the second elevator car on opposite sides of the second elevator car, wherein the two suspension rope trains are secured on the second elevator car by the fastening members. ### Claim 27 An elevator system comprising: a shaft; a first elevator car; a second elevator car, wherein the first and second elevator cars are separately movable up and down in the shaft along a common guideway, a first counterweight coupled to the first elevator car by at least one first suspension rope that is guided by a first traction sheave disposed above the first and second elevator cars, wherein the first counterweight is coupled to the first elevator car by at least one first compensation rope that is guided by a first guide pulley arrangement disposed below the first and second elevator cars; a second counterweight coupled to the second elevator car by at least one second suspension rope that is guided by a second traction sheave disposed above the first and second elevator cars, wherein the second counterweight is coupled to the second elevator car by at least one second compensation rope that is guided by a second guide pulley arrangement disposed below the first and second elevator cars, wherein a first end and a second end of the at least one first compensation rope is secured to the first counterweight or the first elevator car, wherein the at least one first compensation rope is guided around at least one roller disposed on the first elevator car or the first counterweight.