# US 10,501,287 B2 · Damper unit for an elevator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,287 B2 - Document ID: US10501287B2 - Status: Granted - Kind: B2 - Application number: 15/536,795 - Filed: 2015-12-14 - Published: 2017-12-14 - Granted: 2019-12-10 - Earliest claimed: 2014-12-17 - Assignees: Inventio AG - Applicants: Inventio AG - Inventors: Philipp Zimmerli - Web page: https://patentgrep.com/patent/US10501287B2 ## CPC - B66B 7/042: {with rollers, shoes} - B66B 7/044: {with magnetic or electromagnetic means} - B66B 7/08: for connection to the cars or cages, e.g. couplings - B66B 17/34: Safe lift clips; Keps - F16F 15/1421: {Metallic springs, e.g. coil or spiral springs} - F16F 15/18: using electric, {magnetic or electromagnetic} means ({suppression of vibrations of rotating systems by use of non-rotating magnetic or electromagnetic means F16F15/03;} dynamo-electric devices H02K; {control effected upon generator excitation circuit to reduce harmful effects of overloads or transients H02P9/10}) - 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) - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract A damper unit for an elevator, for the purpose of reducing vertical vibration of a stopping elevator car, has at least one roller that, in an active position, is in contact with a guide rail for the elevator car and can be rotated about an axis of rotation. For damping rotary movements during vertical vibration of the stopping elevator car, the roller is connected to a rotation damper. ## Claims ### Claim 1 A damper unit for an elevator for reducing a vertical vibration of a stopping elevator car, comprising: at least one roller mounted on the elevator car, the at least one roller, in an active position, being in contact with a guide rail for guiding the elevator car and is rotatable about an axis of rotation; and a rotation damper connected or connectable to the at least one roller for damping rotary movements of the at least one roller during the vertical vibration of the stopping elevator car. ### Claim 2 (depends on 1) The damper unit according to claim 1 wherein the rotation damper controls the active position of the roller via a controllable electric coupling. ### Claim 3 (depends on 1) The damper unit according to claim 1 including a means of applying force for pressing the at least one roller, when in the active position, against the guide rail. ### Claim 4 (depends on 3) The damper unit according to claim 3 wherein the means of applying force is a spring element. ### Claim 5 (depends on 3) The damper unit according to claim 3 including a lever arm being, at one end, flexibly connected or connectable to the elevator car and supported by the means of applying force. ### Claim 6 (depends on 1) The damper unit according to claim 1 including an actuator for moving the at least one roller between a rest position and the active position, wherein the at least one roller in the rest position can be moved by the elevator car contact-free along the guide rail. ### Claim 7 (depends on 1) The damper unit according to claim 1 wherein the at least one roller, in the active position, contacts a guide surface on an end face of the guide rail. ### Claim 8 (depends on 1) The damper unit according to claim 1 wherein the at least one roller is a first roller and including a second roller, the first and second rollers facing each other, wherein the guide rail is arranged between the first and second rollers. ### Claim 9 (depends on 8) The damper unit according to claim 8 wherein the first and second rollers are rotatably mounted and damped by rotary dampers on opposite ends of a lever element, wherein the lever element pivots the first and second rollers between a rest position and the active position, and wherein in the rest position the first and second rollers are each spaced apart from the guide rail and can be moved by the elevator car contact-free along the guide rail. ### Claim 10 (depends on 9) The damper unit according to claim 9 wherein the lever element is formed as a rocker, wherein a pivot axis for pivoting movement of the lever element is arranged centrally between rotary axes of the first and second rollers. ### Claim 11 (depends on 9) The damper unit according to claim 9 including an actuator for controlling the pivoting movement of the lever element. ### Claim 12 (depends on 11) The damper unit according to claim 11 wherein the actuator includes an electromagnet for controlling the active position of the first and second rollers. ### Claim 13 (depends on 1) An elevator having an elevator car and at least one of the damper unit according to claim 1 associated with the elevator car.