EP1050504B1 - Device for carrying out work in an elevator shaft - Google Patents

Device for carrying out work in an elevator shaft Download PDF

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Publication number
EP1050504B1
EP1050504B1 EP00108761A EP00108761A EP1050504B1 EP 1050504 B1 EP1050504 B1 EP 1050504B1 EP 00108761 A EP00108761 A EP 00108761A EP 00108761 A EP00108761 A EP 00108761A EP 1050504 B1 EP1050504 B1 EP 1050504B1
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EP
European Patent Office
Prior art keywords
platform
lift
cage
supports
maintenance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00108761A
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German (de)
French (fr)
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EP1050504A1 (en
Inventor
Rolf Masch. Ing. HTL Müller
Hanspeter El. Ing. Htl Bloch
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Inventio AG
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Inventio AG
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Priority to EP00108761A priority Critical patent/EP1050504B1/en
Publication of EP1050504A1 publication Critical patent/EP1050504A1/en
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Publication of EP1050504B1 publication Critical patent/EP1050504B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B66B11/0246—Maintenance features

Definitions

  • the invention relates to an elevator car with a device for carrying out work in an elevator shaft, in which an elevator car with maintenance platform can be moved, from which the work can be performed.
  • a disadvantage of the known device is that the booth wall carrying the pedestal must be mechanically reinforced and also fittings for folding and fixing the pedestal are necessary, where the elevator users can hang with clothes or items because the pedestal is in the residence area of the elevator users located.
  • the invention aims to remedy this situation.
  • the invention as characterized in claim 1 solves the problem of avoiding the disadvantages of the known device and to provide a device for working in an elevator shaft, which is not a danger to either the maintenance staff or the elevator users in the elevator car.
  • the advantages achieved by the invention are essentially to be seen in the fact that for the elevator car users there is no danger of injuring themselves on parts of the maintenance platform because the maintenance platform is located outside the area of residence of the elevator car users.
  • the cabin interior is not affected by the maintenance platform.
  • the aesthetic appearance of the cabin interiors is of great economic importance.
  • the maintenance platform according to the invention fully meets this requirement, for example by virtue of the invisible arrangement of the maintenance platform.
  • the maintenance platform according to the invention also has an increased carrying capacity, so that parts to be mounted or dismantled in the shaft can be temporarily stored on the maintenance platform.
  • the location of the hatch or the ceiling opening in the roof of the elevator car to perform the work in the elevator shaft can be selected so that the hatch is not dominated by shaft equipment arranged in the shaft head, in which case the maintenance platform is in the projection of the hatch and also a has enough floor space.
  • the location of the hatch, the sufficient footprint and the increased load capacity of the maintenance platform ensure the safety of the maintenance staff.
  • the maintenance platform is extremely easy to use and quickly operational without any effort.
  • FIG. 1 designates a hoistway limited by shaft walls 1.2 in which an elevator car 2 can be moved.
  • a traction sheave 5 is arranged, which is in communication with a drive, not shown.
  • the traction sheave 5 and / or the drive is for example carried by a wall bracket 6.
  • a support cable 7 has a cable course, not shown, for example, from a fixed point on a pulley 2 or under a loop on two pulleys, further on the traction sheave 5, further on a pulley of a counterweight, not shown, and on to another fixed point.
  • a maintenance platform designated 10 is arranged in the elevator car 2 and serves for the maintenance of manhole equipment, such as traction sheave 5, drive, carrying cable 7, guide rails, shaft switches, etc ..
  • a footprint from which the work is carried out in the elevator shaft 1, is in further designated with pedestal 10.1.
  • the maintenance platform 10 is stowed on a hatch cover 14.1 as shown by a broken line.
  • the maintenance platform 10 can be constructed as shown in FIG. 1.
  • the maintenance platform 10 is stowed as shown by a broken line in folded form on the hatch cover 14.1.
  • the hatch cover 14.1 is folded around a first pivot point D1 into the elevator car 2.
  • the maintenance platform 10 is now accessible in collapsed form for the structure.
  • the cabin walls 2.1 are supporting parts of the maintenance platform 10.
  • a plurality of arranged in cabin walls 2.1 supports 10.2 are pivoted into the elevator car 2 and arranged, for example, telescopic or hinged cross connector 10.3 on the supports 10.2.
  • the cross connector 10.3 bear the pedestal 10.1 forming plates 10.11.
  • To stabilize the maintenance platform 10 for example, diagonal, telescopic or foldable struts 10.4 are arranged between the supports 10.2 and a cabin floor 13.
  • the supports 10.2 are pivotable about second pivot points D2. For the transport of persons and goods, the supports are 10.2 in the position shown with a broken line outside the elevator car. 2
  • the handrails can be used as a support for the cross connector 10.3.
  • the supports 10.2 shown in Fig. 1 are not necessary in this embodiment, the remaining parts of the maintenance platform 10 remain the same as explained above.
  • a hatch 14 is provided, which is closable by means of the hatch cover 14.1.
  • the hatch cover 14.1 can be folded around the first pivot point D1, it can also be designed as a detachable hatch cover 14.1.
  • the position and size of the hatch 14 is selected so that the hatch 14 is not surmounted by shaft equipment 3 arranged in the shaft head 3, such as the traction sheave 5 and / or the drive.
  • the shown machine roomless elevator disposition offers with its shortened shaft head 3 for the maintenance of the canopy not enough height H for a proper crossing (distance between cabin ceiling 2.2 and manhole cover 1.1), for example, one meter.
  • With the inventive maintenance platform 10 in the working position shown is provided for the safety of the maintenance staff 17 and the required crossing Ü achieved because no longer the distance between the cabin ceiling 2.2 and the shaft ceiling 1.1 is decisive, but the distance between the pedestal 10.1 and the shaft ceiling 1.1 and because no shaft equipment in the shaft head 3, the hatch 14 surmounted.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Heat Treatment Of Articles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Movable Scaffolding (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

The work unit for lift shafts (1) consists of the lift-cabin (2) with a maintenance platform(10). The cabin walls (2.1) are supporting parts of the fold-up maintenance platform with stand (10.2) from which the work is carried out. The lift cabin has sw supports (10.2) supporting the platform withstand. The platform can be stowed away in a hatch-cover (14.1). The platform with th supports has transverse connectors (10.3) carrying the stand. Diagonal struts (10.4) between the supports and cabin floor (13) stabilize the platform.

Description

Die Erfindung betrifft eine Aufzugskabine mit einer Einrichtung zur Ausführung von Arbeiten in einem Aufzugsschacht, in dem eine Aufzugskabine mit Wartungsbühne verfahrbar ist, von der aus die Arbeiten ausführbar sind.The invention relates to an elevator car with a device for carrying out work in an elevator shaft, in which an elevator car with maintenance platform can be moved, from which the work can be performed.

Aus der Schrift JP 05097357 ist eine Einrichtung für den Unterhalt von Schachtausrüstung einer Aufzugsanlage bekannt geworden. In einer Aufzugskabine ist ein aus der Kabinenwand klappbares Podest vorgesehen, das als Standfläche für das Unterhaltspersonal während den Unterhaltsarbeiten dient. Im Dach der Aufzugskabine ist eine mittels Deckel verschliessbare Luke vorgesehen, die den Zugang zur Schachtausrüstung gewährt. Das Unterhaltspersonal stellt sich auf das Podest und kann mit aus der Kabine ragendem Oberkörper die Arbeiten im Schacht ausführen.From document JP 05097357 a device for the maintenance of shaft equipment of an elevator installation has become known. In an elevator car a foldable from the cabin wall podium is provided, which serves as a stand for the maintenance staff during the maintenance work. In the roof of the elevator car a hatch which can be closed by means of a cover is provided, which provides access to the shaft equipment. The maintenance personnel stand on the pedestal and can perform work in the shaft with the upper body protruding from the cabin.

Ein Nachteil der bekannten Einrichtung liegt darin, dass die das Podest tragende Kabinenwand mechanisch verstärkt werden muss und zudem Beschläge zum Klappen und Feststellen des Podests notwendig sind, an denen die Aufzugsbenutzer mit Kleidungsstücken oder Gegenständen hängen bleiben können, weil das Podest sich im Aufenthaltsbereich der Aufzugsbenutzer befindet.A disadvantage of the known device is that the booth wall carrying the pedestal must be mechanically reinforced and also fittings for folding and fixing the pedestal are necessary, where the elevator users can hang with clothes or items because the pedestal is in the residence area of the elevator users located.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in Anspruch 1 gekennzeichnet ist, löst die Aufgabe, die Nachteile der bekannten Einrichtung zu vermeiden und eine Einrichtung für Arbeiten in einem Aufzugsschacht zu schaffen, die weder für das Unterhaltspersonal noch für die Aufzugsbenutzer in der Aufzugskabine eine Gefahr darstellt.The invention aims to remedy this situation. The invention, as characterized in claim 1 solves the problem of avoiding the disadvantages of the known device and to provide a device for working in an elevator shaft, which is not a danger to either the maintenance staff or the elevator users in the elevator car.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass für die Aufzugskabinenbenutzer keine Gefahr besteht, sich an Teilen der Wartungsbühne zu verletzen, weil die Wartungsbühne sich ausserhalb des Aufenthaltsbereiches der Aufzugskabinenbenutzer befindet. Das Kabineninterieur wird durch die Wartungsbühne nicht beeinträchtigt. Verkaufsstrategisch ist die ästhetische Aufmachung des Kabineninterieurs von grosser wirtschaftlicher Bedeutung. Die erfindungsgemässe Wartungsbühne kommt dieser Forderung beispielsweise durch die unsichtbare Anordnung der Wartungsbühne voll und ganz entgegen. Die erfindungsgemässe Wartungsbühne hat auch eine erhöhte Tragfähigkeit, sodass im Schacht zu montierende oder demontierte Teile auf der Wartungsbühne zwischengelagert werden können. Die Lage der Luke bzw. der Deckenöffnung im Dach der Aufzugskabine zur Ausführung der Arbeiten im Aufzugsschacht kann so gewählt werden, dass die Luke nicht von im Schachtkopf angeordneter Schachtausrüstung überragt wird, wobei in diesem Fall die Wartungsbühne in der Projektion der Luke liegt und ausserdem eine ausreichend grosse Standfläche hat. Die Lage der Luke, die ausreichende Standfläche und die erhöhte Tragfähigkeit der Wartungsbühne gewährleisten die Sicherheit des Unterhaltspersonal. Ausserdem ist die Wartungsbühne äusserst einfach in der Bedienung und ohne Aufwand rasch betriebsbereit.The advantages achieved by the invention are essentially to be seen in the fact that for the elevator car users there is no danger of injuring themselves on parts of the maintenance platform because the maintenance platform is located outside the area of residence of the elevator car users. The cabin interior is not affected by the maintenance platform. In terms of sales strategy, the aesthetic appearance of the cabin interiors is of great economic importance. The maintenance platform according to the invention fully meets this requirement, for example by virtue of the invisible arrangement of the maintenance platform. The maintenance platform according to the invention also has an increased carrying capacity, so that parts to be mounted or dismantled in the shaft can be temporarily stored on the maintenance platform. The location of the hatch or the ceiling opening in the roof of the elevator car to perform the work in the elevator shaft can be selected so that the hatch is not dominated by shaft equipment arranged in the shaft head, in which case the maintenance platform is in the projection of the hatch and also a has enough floor space. The location of the hatch, the sufficient footprint and the increased load capacity of the maintenance platform ensure the safety of the maintenance staff. In addition, the maintenance platform is extremely easy to use and quickly operational without any effort.

Im folgenden wird die Erfindung anhand von einer ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert.In the following the invention will be explained in more detail with reference to a drawing illustrating an exemplary embodiment.

Es zeigt:

Fig. 1
eine schematische Darstellung einer auf der obersten Haltestelle stehenden Aufzugskabine mit Wartungsbühne in einem Aufzugsschacht mit verkürztem Schachtkopf.
It shows:
Fig. 1
a schematic representation of a standing on the top stop elevator car with maintenance platform in a lift shaft with shortened shaft head.

In der Fig. 1 ist mit 1 ein durch Schachtwände 1.2 begrenzter Aufzugsschacht bezeichnet, in dem eine Aufzugskabine 2 verfahrbar ist. Im Schachtkopf 3 ist eine Treibscheibe 5 angeordnet, die mit einem nicht dargestellten Antrieb in Verbindung steht. Die Treibscheibe 5 und/oder der Antrieb ist beispielsweise von einer Wandkonsole 6 getragen. Ein Tragseil 7 hat einen nicht dargestellten Seilverlauf beispielsweise von einem Fixpunkt über eine Umlenkrolle der Aufzugskabine 2 oder bei einer Unterschlingung über zwei Umlenkrollen, weiter über die Treibscheibe 5, weiter über eine Umlenkrolle eines nicht dargestellten Gegengewichtes und weiter zu einem weiteren Fixpunkt.In FIG. 1, 1 designates a hoistway limited by shaft walls 1.2 in which an elevator car 2 can be moved. In the shaft head 3, a traction sheave 5 is arranged, which is in communication with a drive, not shown. The traction sheave 5 and / or the drive is for example carried by a wall bracket 6. A support cable 7 has a cable course, not shown, for example, from a fixed point on a pulley 2 or under a loop on two pulleys, further on the traction sheave 5, further on a pulley of a counterweight, not shown, and on to another fixed point.

Eine mit 10 bezeichnete Wartungsbühne ist in der Aufzugskabine 2 angeordnet und dient der Wartung von Schachtausrüstung, wie beispielsweise Treibscheibe 5, Antrieb, Tragseil 7, Führungsschienen, Schachtschalter, etc.. Eine Standfläche von der aus die Arbeiten im Aufzugsschacht 1 ausgeführt werden, ist im weiteren mit Podest 10.1 bezeichnet. Für den Transport von Personen und Gütern ist die Wartungsbühne 10 wie mit unterbrochener Linie gezeigt an einem Lukendeckel 14.1 verstaubar. Für Wartungsarbeiten im Aufzugsschacht 1 ist die Wartungsbühne 10 wie in Fig. 1 gezeigt aufbaubar.A maintenance platform designated 10 is arranged in the elevator car 2 and serves for the maintenance of manhole equipment, such as traction sheave 5, drive, carrying cable 7, guide rails, shaft switches, etc .. A footprint from which the work is carried out in the elevator shaft 1, is in further designated with pedestal 10.1. For the transport of persons and goods, the maintenance platform 10 is stowed on a hatch cover 14.1 as shown by a broken line. For maintenance work in the elevator shaft 1, the maintenance platform 10 can be constructed as shown in FIG. 1.

Die Wartungsbühne 10 ist wie mit unterbrochener Linie gezeigt in zusammengeklappter Form am Lukendeckel 14.1 verstaubar. Beim Aufbau der Wartungsbühne 10 wird der Lukendeckel 14.1 um einen ersten Drehpunkt D1 in die Aufzugskabine 2 geklappt. Die Wartungsbühne 10 ist nun in zusammengeklappter Form für den Aufbau zugänglich. Die Kabinenwände 2.1 sind tragende Teile der Wartungsbühne 10. Zuerst werden mehrere in Kabinenwänden 2.1 angeordnete Auflager 10.2 in die Aufzugskabine 2 geschwenkt und beispielsweise teleskopartige oder klappbare Querverbinder 10.3 an den Auflagern 10.2 angeordnet. Die Querverbinder 10.3 tragen das Podest 10.1 bildende Platten 10.11. Zur Stabilisierung der Wartungsbühne 10 werden beispielsweise diagonal verlaufende, teleskopartige oder klappbare Streben 10.4 zwischen den Auflagern 10.2 und einem Kabinenboden 13 angeordnet.The maintenance platform 10 is stowed as shown by a broken line in folded form on the hatch cover 14.1. When building the maintenance platform 10, the hatch cover 14.1 is folded around a first pivot point D1 into the elevator car 2. The maintenance platform 10 is now accessible in collapsed form for the structure. The cabin walls 2.1 are supporting parts of the maintenance platform 10. First, a plurality of arranged in cabin walls 2.1 supports 10.2 are pivoted into the elevator car 2 and arranged, for example, telescopic or hinged cross connector 10.3 on the supports 10.2. The cross connector 10.3 bear the pedestal 10.1 forming plates 10.11. To stabilize the maintenance platform 10, for example, diagonal, telescopic or foldable struts 10.4 are arranged between the supports 10.2 and a cabin floor 13.

Die Auflager 10.2 sind um zweite Drehpunkte D2 schwenkbar. Für den Transport von Personen und Gütern sind die Auflager 10.2 in der mit unterbrochener Linie gezeigten Stellung ausserhalb der Aufzugskabine 2.The supports 10.2 are pivotable about second pivot points D2. For the transport of persons and goods, the supports are 10.2 in the position shown with a broken line outside the elevator car. 2

Bei Aufzugskabinen 2 mit Handläufen können die Handläufe als Auflager für die Querverbinder 10.3 verwendet werden. Die in Fig. 1 gezeigten Auflager 10.2 sind bei dieser Ausführungsvariante nicht nötig, die übrigen Teile der Wartungsbühne 10 bleiben dieselben wie oben erläutert.In elevator cars 2 with handrails, the handrails can be used as a support for the cross connector 10.3. The supports 10.2 shown in Fig. 1 are not necessary in this embodiment, the remaining parts of the maintenance platform 10 remain the same as explained above.

Im Dach der Aufzugskabine 2 ist eine Luke 14 vorgesehen, die mittels des Lukendeckels 14.1 verschliessbar ist. Wie in Fig. 1 gezeigt ist der Lukendeckel 14.1 um den ersten Drehpunkt D1 klappbar, er kann auch als abnehmbarer Lukendeckel 14.1 ausgeführt sein.In the roof of the elevator car 2, a hatch 14 is provided, which is closable by means of the hatch cover 14.1. As shown in Fig. 1, the hatch cover 14.1 can be folded around the first pivot point D1, it can also be designed as a detachable hatch cover 14.1.

Die Lage und die Grösse der Luke 14 ist so gewählt, dass die Luke 14 nicht von im Schachtkopf 3 angeordneter Schachtausrüstung wie beispielsweise der Treibscheibe 5 und/oder vom Antrieb überragt wird. Die gezeigte maschinenraumlose Aufzugsdisposition bietet mit ihrem verkürzten Schachtkopf 3 für die Wartung vom Kabinendach aus nicht genügend Höhe H für eine vorschriftsmässige Überfahrt (Distanz zwischen Kabinendecke 2.2 und Schachtdecke 1.1) von beispielsweise einem Meter. Mit der erfindungsgemässen Wartungsbühne 10 in der gezeigten Arbeitsstellung wird für die Sicherheit des Unterhaltspersonals 17 gesorgt und die geforderte Überfahrt Ü erreicht, weil nicht mehr die Distanz zwischen der Kabinendecke 2.2 und der Schachtdecke 1.1 bestimmend ist, sondern die Distanz zwischen dem Podest 10.1 und der Schachtdecke 1.1 und weil keine Schachtausrüstung im Schachtkopf 3 die Luke 14 überragt.The position and size of the hatch 14 is selected so that the hatch 14 is not surmounted by shaft equipment 3 arranged in the shaft head 3, such as the traction sheave 5 and / or the drive. The shown machine roomless elevator disposition offers with its shortened shaft head 3 for the maintenance of the canopy not enough height H for a proper crossing (distance between cabin ceiling 2.2 and manhole cover 1.1), for example, one meter. With the inventive maintenance platform 10 in the working position shown is provided for the safety of the maintenance staff 17 and the required crossing Ü achieved because no longer the distance between the cabin ceiling 2.2 and the shaft ceiling 1.1 is decisive, but the distance between the pedestal 10.1 and the shaft ceiling 1.1 and because no shaft equipment in the shaft head 3, the hatch 14 surmounted.

Claims (7)

  1. Lift cage with equipment for carrying out operations in a lift shaft (1), in which the lift cage (2) with a maintenance trestle (10), from which the operations can be carried out, is movable, characterised in that the cage walls (2.1) are supporting parts of the maintenance trestle, which is foldable together, with a platform (10.1), from which the operations in the lift shaft (1) can be carried out, wherein the platform (10.1) extends from cage wall (2.1) to cage wall (2.1) and is carried by these.
  2. Lift cage according to claim 1, characterised in that the lift cage (2) has supports (10.2) which are arranged at the cage walls (2.1) and carry the maintenance trestle (10) with platform (10.1).
  3. Lift cage according to claim 1 or 2, characterised in that the supports (10.2) are pivotable into the lift cage (2) for the erection of the maintenance trestle (10).
  4. Lift cage according to claim 1 or 2, characterised in that handrails arranged at the cage walls (2.1) serve as supports.
  5. Lift cage according to claims 1 to 4, characterised in that the maintenance trestle (10) is stowable at a hatch cover (14.1).
  6. Lift cage according to one of the preceding claims, characterised in that the maintenance trestle (10) comprises transverse connectors (10.3) which are connectible with the supports (10.2) and support the platform (10.1).
  7. Lift cage according to claim 6, characterised in that for stabilising the maintenance trestle (10) diagonally extending stays (10.4) are arranged between the supports (10.2) and a cage floor (13).
EP00108761A 1999-05-07 2000-04-25 Device for carrying out work in an elevator shaft Expired - Lifetime EP1050504B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00108761A EP1050504B1 (en) 1999-05-07 2000-04-25 Device for carrying out work in an elevator shaft

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99810400 1999-05-07
EP99810400 1999-05-07
EP00108761A EP1050504B1 (en) 1999-05-07 2000-04-25 Device for carrying out work in an elevator shaft

Publications (2)

Publication Number Publication Date
EP1050504A1 EP1050504A1 (en) 2000-11-08
EP1050504B1 true EP1050504B1 (en) 2006-06-21

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EP00108761A Expired - Lifetime EP1050504B1 (en) 1999-05-07 2000-04-25 Device for carrying out work in an elevator shaft

Country Status (9)

Country Link
US (1) US6419052B1 (en)
EP (1) EP1050504B1 (en)
JP (1) JP2000318941A (en)
AT (1) ATE330896T1 (en)
CA (1) CA2307424C (en)
DE (1) DE50013018D1 (en)
ES (1) ES2267430T3 (en)
NO (1) NO320386B1 (en)
PT (1) PT1050504E (en)

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US10589964B2 (en) 2016-10-17 2020-03-17 Otis Elevator Company Elevator car, elevator system and method of checking, maintaining and/or repairing an elevator system

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US10392227B2 (en) * 2014-07-25 2019-08-27 Otis Elevator Company Elevator system maintenance from inside a car of the elevator system
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AT517871B1 (en) * 2015-10-16 2017-12-15 Norbert Steiner car
EP3484806B1 (en) * 2016-07-15 2021-04-07 KONE Corporation Elevator arrangement to open the roof of an elevator car
CN108016974A (en) * 2018-01-26 2018-05-11 苏州沃诺斯精密机械有限公司 A kind of elevator frame
EP3760564B1 (en) * 2019-07-05 2023-05-17 Otis Elevator Company Elevator car with working platform stabilisation
EP3828119B1 (en) * 2019-11-26 2023-03-29 Otis Elevator Company Elevator car with mechanical assistance for working platform
EP3909897A1 (en) * 2020-05-12 2021-11-17 KONE Corporation Elevator car, elevator and method
US11427441B2 (en) 2020-07-23 2022-08-30 Otis Elevator Company Elevator car with foldable working platform

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US10589964B2 (en) 2016-10-17 2020-03-17 Otis Elevator Company Elevator car, elevator system and method of checking, maintaining and/or repairing an elevator system

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CA2307424A1 (en) 2000-11-07
JP2000318941A (en) 2000-11-21
NO20002196L (en) 2000-11-08
CA2307424C (en) 2008-08-05
EP1050504A1 (en) 2000-11-08
DE50013018D1 (en) 2006-08-03
US6419052B1 (en) 2002-07-16
PT1050504E (en) 2006-10-31
ES2267430T3 (en) 2007-03-16
NO20002196D0 (en) 2000-04-27
ATE330896T1 (en) 2006-07-15
NO320386B1 (en) 2005-11-28

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