EP3440001A1 - Arrangement for evacuating persons from a lift car - Google Patents
Arrangement for evacuating persons from a lift carInfo
- Publication number
- EP3440001A1 EP3440001A1 EP17717118.8A EP17717118A EP3440001A1 EP 3440001 A1 EP3440001 A1 EP 3440001A1 EP 17717118 A EP17717118 A EP 17717118A EP 3440001 A1 EP3440001 A1 EP 3440001A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elevator car
- evacuation
- rung
- elevator
- web
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims description 26
- 235000003332 Ilex aquifolium Nutrition 0.000 claims description 2
- 241000209027 Ilex aquifolium Species 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
Definitions
- the invention relates to a device for evacuating persons from an elevator car, to an elevator system with such a device and to a method for evacuating persons from this elevator car.
- Elevator systems comprise at least one elevator car, which is arranged for transporting persons or goods between two floors, usually vertically displaceable along guide rails in a lift shaft.
- Such elevator systems are continuously maintained during their operation in order to ensure the safety of the transported persons or of the elevator system.
- the operation of the elevator installation is interrupted by external influences or faulty components of the elevator installation.
- power failures, lightning strikes or an interrupted safety circuit of the elevator system can lead to the elevator car with persons located therein being blocked between two storeys. Then it is necessary that the persons stuck in the elevator car are evacuated from the elevator car.
- JP2005-154025A shows an evacuation device for the evacuation of persons in the case of two elevator cars, which are arranged side by side in a lift shaft during normal operation. If a first of these two elevator cars gets stuck in the elevator shaft, the second elevator car is placed next to the first elevator car. Opposing evacuation passages of the two elevator cars are apparent. These evacuation passages can be connected by a web or evacuation web, wherein this evacuation web can be fixed to the respectively lower limits of the evacuation passage. In order to evacuate the first elevator car, the persons to be evacuated cross the evacuation web so as to reach the second elevator car, which is still movable.
- a device for evacuating persons from an elevator car comprising, preferably the elevator car, a tread element which tread element delimits a lower end of an evacuation passage of the elevator car and a web having a first end, wherein the web by means of the first end on Tread element is fixable, preferably suspendable, wherein the device comprises at least one above the tread element fixable rung, wherein the rung is usable / formed as a tread and the first end of the web instead of the tread element is alternatively fixed to the rung or can be suspended.
- the object is also achieved by means of an elevator system with such a device.
- the object is also achieved by means of a method for evacuating persons from an elevator car with such a device, wherein the first end of the web is fixed or suspended on the rung.
- Such evacuation passage is an opening of the elevator car, which is provided for the evacuation of persons and may be arranged, for example, in a side wall of the elevator car or in the balustrade located on the car roof. During the normal operation of the transport of persons, such an evacuation opening is not passable for the persons to be transported.
- the invention is based on the finding that an evacuation from the height level of the cabin floor of the elevator car to be evacuated by the given vertical position of the blocked elevator car to be evacuated in the elevator shaft can be greatly impeded.
- the reason for this are mounting supports for guide rails or other elements arranged in the elevator shaft, which are located directly on the evacuation passage. gang this blocked, so in the vertical direction substantially fixed elevator car can be arranged.
- these mounting brackets or elements do not make such evacuation difficult so as to present a hurdle to the persons to be evacuated.
- the evacuation opening for the evacuation of the persons is modified in such a way that the vertical height of a web which can be arranged on the blocked elevator cage can be adapted to the conditions of the elevator shaft for evacuation from the blocked elevator cage.
- the device comprises at least one rung securable in the evacuation passage, at which the web, i. the evacuation bridge, can be fixed. Demanch the web can be arranged at the elevator car to be evacuated or at the evacuation passage of the elevator car in different height position.
- the topmost rung on which the web is advantageously fastened for evacuation within the given circumstances located at a relatively large distance from the tread element.
- at least one further rung can be arranged between the uppermost rung and the tread element.
- at least one railing can be fastened to the web along its longitudinal direction. By means of such a railing, the risk of a crash of persons in the elevator shaft when crossing the web can be minimized.
- a development of the device comprises a side of the Evakuleiters misganges on the elevator car fixed spar, wherein the at least one rung is fixable to the spar.
- a spar allows a fixed spacing of the at least one safety rung to the tread element and thus increased safety when passing the evacuation device.
- the device may comprise a second spar, wherein the spars on both sides of an evacuation passage of the elevator car fastened and the at least one rung on the second spar can be fixed.
- a second spar allows secure anchoring of each rung on both sides of the evacuation passage.
- the spar or the bars are / are arranged perpendicular to the tread element. Such a simple and space-saving placement of the device on the elevator car is possible.
- the spar or the spars may be part of a balustrade arranged on a cabin roof of the elevator car.
- An evacuation over the cabin roof of the elevator car to be evacuated is a way to evacuate persons from inside the elevator car or from the elevator car to be evacuated.
- By means of a substantially vertical exit from the interior of the elevator car to the corresponding cabin roof it is possible by way of example to reach the evacuation passage.
- this evacuation port in the balustrade is preferably not passable.
- the spar or the spars may be arranged on both sides of an evacuation passage formed as an evacuation door.
- an evacuation door can be arranged directly in a side wall of the elevator car. Accordingly, the persons to be evacuated can enter the bridge directly from the interior of the elevator car. During normal operation of the transport of persons, such an evacuation opening designed as an evacuation door is not passable for the persons to be transported.
- a refinement of the device comprises a safety barrier having a safety contact, which safety barrier can be arranged within the evacuation passage in such a way that the safety barrier blocks the evacuation passage in its fixed position and the safety contact is closed exclusively in the fixed position of the safety barrier.
- the evacuation passage is only released when the safety contact is open, that is, a safety circuit is open. Only when the safety circuit is closed is it possible to move the elevator car, if necessary, by a service technician.
- the safety circuit of that elevator car by removing the safety barrier is obvious to which elevator car this removable safety barrier is arranged.
- the safety barrier rod is formed form and above the at least one rung fixable.
- the safety barrier in its fixed position the evacuation passage substantially completely close.
- a safety barrier enclosing the evacuation passage in its fixed position can be formed by the door leaf of the evacuation door in its closed position. In this way, the safety of the persons to be evacuated can be increased.
- a development of the elevator system comprises a further elevator car, wherein the further elevator car comprises a further evacuation passage associated with the further elevator car, wherein the evacuation passage of the elevator car and the evacuation passage of the further elevator car can be connected by means of the web.
- the further i.
- the second elevator car can therefore be arranged substantially next to the elevator car to be evacuated.
- these two evacuation passages of the two elevator cars face each other. By passing the bridge, the persons can leave the fixed elevator car and enter the movable elevator cage.
- a lower end of the evacuation passage of the further elevator car is limited by a second tread element, wherein the web by means of its second end on the tread element can be fixed, preferably suspended, and above the second tread element, another rung is fixed, the further rung can be used as a step / trained and a second end of the web instead of the tread element is alternatively fixed to the rung or suspended.
- FIG. 1 an elevator car blocked in an elevator shaft; Elevator system with a device for evacuation of persons;
- Figure 2 designed as an evacuation door in one of the side walls of the elevator car arranged evacuation passage;
- FIG. 3 shows an evacuation passage arranged on the car roof as an integral part of a balustrade
- Figure 4 an elevator system with a device for evacuation of persons from an elevator car.
- FIG. 1 shows an elevator car 5 of an elevator system blocked in an elevator shaft 2.
- the elevator shaft 2 adjoins two floors 10.0, 10.1 arranged directly one above the other. Each of these floors 10.0, 10.1 has a landing door 11.0, 11.1.
- elevator passengers can enter or leave the elevator car 5 through a car door 6 of the elevator car 5 and the shaft door 11.0, 11.1, on which the elevator car 5 is arranged at a floor stop.
- the elevator car 5 blocked according to FIG. 1 is arranged between two floors 10.0, 10.1 arranged directly one above the other. This means that an interior of the elevator car 5 can not be reached through one of the shaft doors 11.0, 11.1 through one of the floors 10.0, 10.1. Instead, the elevator car 5 can likewise be arranged on one of the shaft doors 11.0, 11.1, with the car door 6 or the shaft door 11.0, 11.1, on which shaft door 11.0, 11.1 the elevator car 5 is arranged, being blocked in the closed position. Accordingly, the persons located in the elevator car 5 can not leave the elevator car 5 through the car door 6 or through one of the shaft doors 11.0, 11.1.
- the elevator car 5 has an evacuation passage.
- an exit from the elevator shaft 2 can be reached through this evacuation passage of the elevator car 5.
- the evacuation passage is designed as an evacuation door 20.
- Such an evacuation door 20 is arranged in one of the side walls 8 of the elevator car 5 and exemplarily exclusively from the outside, so that a service technician can safely evacuate the persons from the blocked elevator car 5.
- the elevator car 5 may have an evacuation passage arranged on the car roof 7 of the elevator car 5.
- Such arranged on the car roof 7 evacuation passage can be achieved by means of an example, can be arranged in the elevator car 5 temporarily ladder by a located in the canopy 7 roof flap 30.
- FIG. 2 shows an evacuation passage designed as an evacuation door 20, which is arranged in one of the side walls 8 of the elevator car 5.
- FIG. 3 shows parts of a device for evacuating persons, which parts are formed as an integral part of a balustrade 15 arranged on the cabin roof 7.
- a lower end of the evacuation passage is defined by a tread element 46 of the device.
- the tread element 46 may be used as an entrance step, i. for entering, or for hanging or fixing a web, not shown in Figures 2 and 3, i. Evacuation web, to be used.
- the device comprises at least one rung 47.0, 48.0, 49.0, wherein the rung 47.0, 48.0, 49.0 above the tread element 46 can be fixed.
- a top of the fixed during the evacuation in the evacuation passage elements, including the at least one fixed rung 47.0, 48.0, 49.0 and the tread element 46, is used in an evacuation for fixing the web.
- these directly superposed elements have a vertical distance in the range of 20 to 30 cm, preferably 26 cm.
- a spar 45 may be arranged laterally of the door opening.
- the spar 45 has for fixing the rung / rungs 47.0, 48.0, 49.0 in the evacuation passage on one of the respective rung 47.0, 48.0, 49.0 associated mounting portion 47, 48, 49.
- the preferably aligned perpendicular to the tread element 46 Holm 45 may be fixed to the evacuation passage having side wall 8 of the elevator car 5 and the balustrade 15 so that is formed by the spar 45 is a part of a door frame or a part of the balustrade 15 for the evacuation passage.
- a second spar 45 ' may be disposed on the other side of the evacuation passage with respect to the first spar 45 and may be formed as well as this first spar 45. Accordingly, the second spar 45 'for fixing the rung / rungs 47.0, 48.0, 49.0 one of the respective rung 47.0, 48.0, 49.0 associated mounting portion 47', 48 ', 49', wherein the mounting portion 47 ', 48', 49 ' is preferably arranged such that the rung or rungs 47.0, 48.0, 49.0 are aligned horizontally in the evacuation passage.
- a safety barrier 52 can be arranged within the evacuation passage in such a way that the evacuation passage is blocked despite the evacuation door or the open balustrade 15 being open.
- the safety barrier 52 shown in FIGS. 2 and 3 has a sturdy construction.
- the blocking safety barrier 52 is fixed by way of example to the at least one spar 45, 45 'and / or above all the attachment rungs 47, 48, 49, 47', 48 ', 49' of the device that can be assigned to the rungs 47.0, 48.0, 49.0.
- the safety barrier 52 comprises a safety contact 53, which is preferably closed in the position of the safety barrier 52 blocking the evacuation passage. Removal of this safety barrier 52 causes switching of the safety contact 53 and concomitantly that the evacuation passage is deblocked.
- the safety contact 53 can be incorporated by way of example into a safety circuit of the elevator system, wherein an opened safety circuit prevents a method of the elevator car, which elevator car is assigned to the safety circuit.
- FIG. 4 shows an elevator system with a first elevator car 5.1 and a second elevator car 5.2, which are arranged next to each other in a shared elevator shaft 2 of both elevator cars 5.1, 5.2. Both the first and the second elevator car 5.1, 5.2 have an evacuation door 20.1, 20.2.
- the first evacuation door 20.1 assigned to the first elevator car 5.1 and the second evacuation door 20.2 assigned to the second elevator car 5.2 face one another.
- a device shown in FIG 2 for the evacuation of persons can be arranged or, as shown in Figure 4, arranged.
- a device shown in FIG 3 can be arranged on the respective balustrade of the two elevator cars.
- a first of the two devices are arranged on the first evacuation door 20.1 and the second of these devices is arranged on the second evacuation door 20.2.
- a plurality of vertically stacked mounting bracket 60.1, 60.2 between the traverse paths of the two elevator cars 5.1, 5.2 are arranged.
- mounting brackets 60.1, 60.2 rails not shown for vertical guidance of the elevator cars 5.1, 5.2 may be mounted in the elevator shaft 2.
- the first elevator car 5.1 is blocked by way of example in the elevator shaft 2, wherein the second elevator car 5.2 can continue to be moved vertically. This means that a vertical movement of the first elevator car 5.1 is impossible, after which the persons trapped in the first elevator car 5.1 must be evacuated. Such a blocked state of the first elevator car 5.1 may be caused inter alia by power failure, lightning strike or a malfunctioning shaft door contact opening the safety circuit, although the shaft door having this shaft door contact is closed.
- the second elevator car 5.2 can be placed in the elevator shaft 2 such that the evacuation of the persons from the first blocked elevator car 5.1 into the second elevator car 5.2 can be carried out via a web 55 which can be fixed to the two devices.
- a first end of the web 55 is fixed or suspended on a rung 48.01 of a first of the two devices and with its second end opposite the first end on the tread element 46.2 of the second of the two devices, so that a Crossing of the web 55 is limited by the persons to be evacuated as little as possible. Traceable would be limited such a crossing regardless of the vertical positioning of the second elevator car 5.2, if the web 55 would be fixed or mounted on the tread elements 46.1, 46.2 of the two devices, since the persons in the crossing of the web 55, the lower of the two in FIG 4 above or have to crawl underneath it, which in turn would entail an increased risk of the persons falling into the elevator shaft 2.
- the second elevator car 5.2 can be placed in the elevator shaft 2 for evacuation with respect to the first blocked elevator car 5.1, depending on the positioning of the fastening carrier 60.1 obstructing the evacuation.
- the service technician evacuating the persons can remove the safety barrier 52.2 of the second device so as to open the safety contact assigned to the second elevator car 5.2 or to interrupt the associated safety circuit. It is also possible to design the safety contact of this safety barrier 52.2 such that the safety circuit associated with the first elevator car 5.1 is likewise interrupted so as to reliably prevent a process of the first elevator car 5.1 in the exemplary case of an end of the power failure.
- the web 55 with its first end on the tread element 46.1 or on one of the fixed within the Evaku réelles misganges sprouts 47.01, 48.01, 49.01 can be fixed or suspended.
- An optionally fixable above the first end of the fixed web 55 rung 49.01 should be removed for the evacuation of persons as possible, so as not to force an overshoot of an additional obstacle, which would represent such a rung 49.01.
- the rung 47.01 fixable below the first end of the fixed or suspended web 55 can be fixed within the evacuation passage.
- a method described below for evacuating the blocked elevator car 5.1 is applicable both to elevator systems which only use the blocked first elevator car 5.1 and to elevator systems which additionally have the second elevator car 5.2.
- a service technician To carry out the evacuation from the first elevator car 5.1 a service technician must place the blocked elevator car 5.1 in a stop mode. This means that the blocked state, which is possibly due to a power failure or lightning strike, is ensured. By way of example, this can be done by switching a main switch located in the machine room of the elevator installation.
- a method of this blocked elevator car 5.1 by a again intact externally intact power supply is thus prevented, so that an outside of this blocked elevator car 5.1 working service technician can not be surprised or endangered by a suddenly deblocked, traversing elevator car 5.1.
- the service technician can get to the blocked elevator car 5.1.
- the service technician preferably moves the second elevator car 5.2 in a service mode such that the second elevator car 5.2 is placed in the elevator shaft 2 in such a way that the evacuation of the persons from the blocked elevator car 5.1 into the second elevator car 5.2 via one of the two elevator cars 5.1 5.2 fixable web 55 can be made.
- the security engineer can remove the safety barrier 52.02 which may be present at the second elevator cage 5.2.
- the service technician places the web 55 such that the first end of the web 55 is fixed or suspended on the first elevator car 5.1, either on the tread element 46.1 or on one of the rungs 47.0, 48.0, 49.0 of the device for evacuation.
- the second end of the web 55 is preferably suspended or fixed on the tread element 46.2 fixed to the second elevator car 5.2.
- the second end can also be suspended or fixed to one of the rungs 47.02, 48.02 fixed to the second elevator car 5.2.
- the second end of the web 55 is to be fixed in the elevator shaft 2 as possible at a shaft exit if the evacuation of the persons located in the first elevator car 5.1 does not take place to an optionally present second elevator car 5.2.
- a safety barrier 52.1 can be removed so as to make accessible the web 55 for the persons to be evacuated and to be able to carry out the evacuation.
- the equipment of an elevator system described in accordance with FIG. 4 is likewise suitable for evacuating persons trapped therein into the first movable elevator cage 5.1 in the case of the blocked second elevator cage 5.2.
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Handcart (AREA)
- Emergency Lowering Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17717118T PL3440001T3 (en) | 2016-04-07 | 2017-04-06 | Device for evacuating people from an elevator car |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16164307 | 2016-04-07 | ||
PCT/EP2017/058281 WO2017174739A1 (en) | 2016-04-07 | 2017-04-06 | Arrangement for evacuating persons from a lift car |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3440001A1 true EP3440001A1 (en) | 2019-02-13 |
EP3440001B1 EP3440001B1 (en) | 2020-01-29 |
Family
ID=55699542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17717118.8A Active EP3440001B1 (en) | 2016-04-07 | 2017-04-06 | Device for evacuating people from an elevator car |
Country Status (11)
Country | Link |
---|---|
US (1) | US11225395B2 (en) |
EP (1) | EP3440001B1 (en) |
KR (1) | KR102373913B1 (en) |
CN (1) | CN108883895B (en) |
AU (1) | AU2017245728B2 (en) |
BR (1) | BR112018069443A2 (en) |
HK (1) | HK1258355A1 (en) |
PH (1) | PH12018502152A1 (en) |
PL (1) | PL3440001T3 (en) |
SG (1) | SG11201807939PA (en) |
WO (1) | WO2017174739A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023117514A1 (en) | 2021-12-22 | 2023-06-29 | Inventio Ag | Extendable evacuation bridge for an elevator |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1087204A (en) * | 1996-09-19 | 1998-04-07 | Hitachi Ltd | Elevator emergency rescuing device |
JP2004123315A (en) * | 2002-10-03 | 2004-04-22 | Toshiba Elevator Co Ltd | Elevator emergency rescue device |
JP4339652B2 (en) * | 2003-08-27 | 2009-10-07 | 三菱電機株式会社 | Elevator car side rescue device |
JP2005154025A (en) * | 2003-11-20 | 2005-06-16 | Hitachi Building Systems Co Ltd | Passenger rescue device and passenger rescue method for elevator |
JP4792953B2 (en) * | 2005-12-06 | 2011-10-12 | 三菱電機株式会社 | Elevator rescue device and elevator rescue method |
JP4897398B2 (en) * | 2006-08-28 | 2012-03-14 | 東芝エレベータ株式会社 | Elevator rescue equipment |
JP5533542B2 (en) * | 2010-10-14 | 2014-06-25 | 三菱電機株式会社 | Rescue device and elevator |
JP5676550B2 (en) * | 2012-12-06 | 2015-02-25 | 東芝エレベータ株式会社 | Elevator rescue equipment |
JP2016008091A (en) * | 2014-06-20 | 2016-01-18 | 三菱電機株式会社 | Rescue device of elevator and elevator |
WO2019026291A1 (en) * | 2017-08-04 | 2019-02-07 | 三菱電機株式会社 | Elevator rescue device |
-
2017
- 2017-04-06 KR KR1020187028895A patent/KR102373913B1/en active IP Right Grant
- 2017-04-06 SG SG11201807939PA patent/SG11201807939PA/en unknown
- 2017-04-06 EP EP17717118.8A patent/EP3440001B1/en active Active
- 2017-04-06 US US16/090,297 patent/US11225395B2/en active Active
- 2017-04-06 BR BR112018069443-6A patent/BR112018069443A2/en not_active Application Discontinuation
- 2017-04-06 AU AU2017245728A patent/AU2017245728B2/en active Active
- 2017-04-06 CN CN201780022340.6A patent/CN108883895B/en active Active
- 2017-04-06 PL PL17717118T patent/PL3440001T3/en unknown
- 2017-04-06 WO PCT/EP2017/058281 patent/WO2017174739A1/en active Application Filing
-
2018
- 2018-10-05 PH PH12018502152A patent/PH12018502152A1/en unknown
-
2019
- 2019-01-16 HK HK19100725.1A patent/HK1258355A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
SG11201807939PA (en) | 2018-10-30 |
AU2017245728B2 (en) | 2020-03-05 |
PH12018502152A1 (en) | 2019-07-15 |
PL3440001T3 (en) | 2020-07-13 |
BR112018069443A2 (en) | 2019-02-12 |
WO2017174739A1 (en) | 2017-10-12 |
AU2017245728A1 (en) | 2018-11-08 |
CN108883895A (en) | 2018-11-23 |
US11225395B2 (en) | 2022-01-18 |
KR102373913B1 (en) | 2022-03-11 |
KR20180133409A (en) | 2018-12-14 |
EP3440001B1 (en) | 2020-01-29 |
US20190112154A1 (en) | 2019-04-18 |
CN108883895B (en) | 2021-03-02 |
HK1258355A1 (en) | 2019-11-08 |
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