EP1377516B1 - Hydraulic drive unit mounted in the elevator shaft - Google Patents

Hydraulic drive unit mounted in the elevator shaft Download PDF

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Publication number
EP1377516B1
EP1377516B1 EP01925882A EP01925882A EP1377516B1 EP 1377516 B1 EP1377516 B1 EP 1377516B1 EP 01925882 A EP01925882 A EP 01925882A EP 01925882 A EP01925882 A EP 01925882A EP 1377516 B1 EP1377516 B1 EP 1377516B1
Authority
EP
European Patent Office
Prior art keywords
drive unit
wall
landing
hydraulically
elevator shaft
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
EP01925882A
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German (de)
French (fr)
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EP1377516A1 (en
Inventor
Giuseppe Volpe
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Igv SpA
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Igv SpA
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Filing date
Publication date
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Publication of EP1377516A1 publication Critical patent/EP1377516A1/en
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Publication of EP1377516B1 publication Critical patent/EP1377516B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • B66B11/001—Arrangement of controller, e.g. location
    • B66B11/002—Arrangement of controller, e.g. location in the hoistway
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/30—Constructional features of doors or gates
    • B66B13/306—Details of door jambs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically

Definitions

  • the invention concerns an hydraulically-operated means for passenger or goods elevators.
  • Elevator is used here to indicate an installation constructed for carrying either passengers or goods, so that the general term “loading platform” applies both to a cabin for passengers or to a cage for goods.
  • elevators are of two kinds, worked either by cables or by hydraulic means.
  • the machinery includes a hydraulic drive unit comprising a tank for the fluid, a pumping unit with a positive-displacement pump and electric motor, and a set of valves to work the various stages of movement.
  • the European elevator directive 95/16/CE and the certification systems for warranties and quality at present in use permit installation of elevators that do not require a room for machinery.
  • the prior patent WO 97/42119A discloses a housing (18) to contain the machinery of a hydraulic elevator, placed adjacent to the doorway (12) of a landing of the shaft thus replacing a piece of permanent wall (14) of said shaft and partially occupying the landing.
  • the prior patent WO 99/43596 A discloses a control cabinet (402) shown in Fig. 6 of said patent, comprising a drive motor controller (406) for the electrical system of an electric elevator with flat ropes (29), illustrated in Fig. 2 of said patent, instead of the round ropes (28) shown in Fig. 1 of said patent.
  • Said control cabinet (402) can slide from a position inside the hoistway (12) to a position adjacent to a landing (18) accessible to maintenance personnel.
  • the drive unit In the case of hydraulically operated elevators where a room for machinery is not provided, the drive unit is installed either in the pit, or near to one of the floor doors or else in a cupboard placed in some free space.
  • any maintenance work required means taking the elevator out of service to allow the technician to get down into the pit.
  • the drive unit is installed near one of the floor doors, overall dimensions are greater than those needed for an elevator with a machine room. In this case, and in order to repair or replace faulty parts such as the electric motor for example, the whole of the adjacent structures must be taken down.
  • the drive unit is placed in a cupboard outside the elevator shaft, space is needed for it that could be otherwise used.
  • Cooling of the hydraulic fluid is also more complex involving higher costs for refrigeration systems, or else imposing a reduction in the number of journeys per hour that the elevator can make.
  • the weight of the cupboard also adds to the difficulty of carrying and installing it.
  • Subject of the invention is an hydraulically-operated means for elevators carrying either passengers or goods worked by an hydraulic, drive unit of a flat, compact and substantially parallelepiped structure, placed in the elevator shaft at the level of any stop made by the loading platform, between the wall of said shaft, in common with that of the landing, and the vertical guide of said loading platform nearest to said wall.
  • the rear wall of the drive unit substantially matches with the lateral wall of the elevator shaft.
  • an aperture at the position of the lateral wall of the drive unit, is made to permit said drive unit to be passed through it laterally.
  • a cupboard with a door at the front and having an internal side substantially aligned with the lateral wall of the elevator shaft to allow the drive unit to fit in between the loading platform guide and said door.
  • the drive unit can slide freely sideways using sliding means above and below.
  • the drive unit's upper guiding means consists of a bar placed on the lateral wall of the elevator shaft, said bar extending onto the internal side of the cupboard and being substantially aligned with said shaft.
  • the lower guiding means comprises horizontal carrying rollers fixed transversally by pins onto plates placed at the base of the drive unit's structure, said rollers sliding freely in a horizontal channel.
  • Said horizontal channel comprises a fixed section that extends between a bracket, fixed from the lateral wall of the elevator shaft to the nearest guide for the loading platform, to the landing, and comprises a mobile section, substantially the same as the fixed section and connected to it by a crosswise hinge that allows said mobile section to stand vertically, against the lateral wall of the drive unit, or be laid flat on the landing, aligned with the fixed section.
  • the lower guiding means consists of a horizontal telescopic complex comprising a pair of guides fixed to the base of the drive unit, a fixed channel that extends between a horizontal bracket, fixed between the lateral wall of the elevator shaft and the nearest guide for the loading platform, and the landing, and comprises an intermediate freely sliding channel.
  • the invention offers evident advantages.
  • the convenient position of the cupboard means that a part of the drive unit's sructure is situated in said cupboard, so further reducing the bulk of the whole installation when mounted.
  • Fig. 1 Elevator shaft as in the invention, with extractable hydraulic drive unit, installed in place, and the cupboard beside the door opening at a landing, in perspective partially cut through.
  • Fig. 2 Elevator shaft, with the elevator, cross section.
  • FIG. 7 Detail of the lower guide system for extracting the drive unit, side view.
  • FIG. 8 Detail of another version of the lower guide system for extracting the drive unit, perspective.
  • the hydraulic drive unit 30 with its substantially flat and parallelepiped structure 31, which also houses a tank for oil, presents at the top a set of valves 35, the horizontally lying solenoids 36 for working the valves, and the button switch 37 for moving the cabin by hand in case of emergency.
  • the drive unit 30 is installed in the elevator shaft 20 for the elevator 10, said unit's rear wall 32 ( Figures 2,3) substantially matching with the side wall 23 of said shaft, between the guide 15 of the elevator 10 and the door 61 of a cupboard 60 ( Figure 1) placed in the front wall 22, with the door 26 ( Figure 2) of the landing 21.
  • the internal wall 64 of one side of the cupboard is substantially aligned with the side wall 23 of the elevator shaft 20.
  • the drive unit 30 can be drawn out onto the landing 21 sliding along a set of upper and lower guides.
  • the lower guide comprises a fixed channel 46 that extends from the horizontal bracket 45, fixed between the side wall 23 of the elevator shaft and the guide 15 of the elevator, to the landing 21.
  • the end of said channel 46 is joined to a second channel 47 substantially the same as the first, that, by means of a horizontal hinge 48, can bend vertically 47' (Figure 7) against the side wall 33 of the structure 31 of the drive unit, or can lie horizontally on the landing 21 as an extension of the channel 46 ( Figures 3,4).
  • the drive unit slides in the channels 46, 47 facilitated by the rollers 40 supported by plates 41 and turning freely on pins 42.
  • the upper guide system for the drive unit comprises a horizontal bar 52 fixed onto the side wall 23 of the elevator shaft extending as far as the side 64 of the cupboard 60 and substantially aligned with said side wall 23.
  • said bar 52 ( Figure 6) supports the pulleys 55 within whose races 56 can freely slide the upper end of the flat rib 50 extending vertically from the rear wall 32 of the structure 31 of the drive unit.
  • the lower guide for the drive unit is made as shown in Figure 8, with a pair of parallel guides 70 fixed to the lower wall of of the unit's structure 31, a channel 72 that extends from the horizontal bracket 45, fixed to the guide 15 of the elevator shaft 20, to the landing 21, and a freely sliding intermediate channel 71.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Hydraulically-operated means (30) for passenger and goods elevators consisting of a hydraulic drive unit (30) of a flat, compact and substantially parallelepiped structure (31) placed in the elevator shaft (20) at the position of any floor stop made by the elevator, between the wall (22) of said elevator shaft (20) in common with that of the landing (21) and the vertical guide (15) nearest to said wall (22), in which, protected by a cupboard (60), an aperture (63) is made to allow said drive unit (30) to be manually drawn out onto the landing (21) for any needful maintenance work or verification. Ref. Fig. 5.

Description

  • The invention concerns an hydraulically-operated means for passenger or goods elevators.
  • The general term "elevator" is used here to indicate an installation constructed for carrying either passengers or goods, so that the general term "loading platform" applies both to a cabin for passengers or to a cage for goods.
  • Basically, elevators are of two kinds, worked either by cables or by hydraulic means.
  • In both cases some space is usually required in which to install the machinery for operating the elevator.
  • Where an elevator is of the hydraulic type, the machinery includes a hydraulic drive unit comprising a tank for the fluid, a pumping unit with a positive-displacement pump and electric motor, and a set of valves to work the various stages of movement.
  • In the room housing the machinery, there are also electric or electronic control panels for operating movement of the loading platform, for power and for lighting.
  • The European elevator directive 95/16/CE and the certification systems for warranties and quality at present in use permit installation of elevators that do not require a room for machinery.
  • Several solutions have been adopted for cable-operated elevators, such as installation of the winch, flat, in the elevator shaft.
  • The prior patent WO 97/42119A discloses a housing (18) to contain the machinery of a hydraulic elevator, placed adjacent to the doorway (12) of a landing of the shaft thus replacing a piece of permanent wall (14) of said shaft and partially occupying the landing.
  • Bearing in mind the limited space available for the housing (18) almost entirely contained within the thickness of the wall, use is made of the full height of the wall between two landings and a pump with a vertical axis is provided.
  • The prior patent WO 99/43596 A discloses a control cabinet (402) shown in Fig. 6 of said patent, comprising a drive motor controller (406) for the electrical system of an electric elevator with flat ropes (29), illustrated in Fig. 2 of said patent, instead of the round ropes (28) shown in Fig. 1 of said patent.
  • Said control cabinet (402) can slide from a position inside the hoistway (12) to a position adjacent to a landing (18) accessible to maintenance personnel.
  • In the case of hydraulically operated elevators where a room for machinery is not provided, the drive unit is installed either in the pit, or near to one of the floor doors or else in a cupboard placed in some free space.
  • All these solutions present the following drawbacks.
  • If the drive unit is installed in the pit, any maintenance work required means taking the elevator out of service to allow the technician to get down into the pit.
  • This also means that the pit must be big enough for the purpose.
  • If the drive unit is installed near one of the floor doors, overall dimensions are greater than those needed for an elevator with a machine room. In this case, and in order to repair or replace faulty parts such as the electric motor for example, the whole of the adjacent structures must be taken down.
  • If the drive unit is placed in a cupboard outside the elevator shaft, space is needed for it that could be otherwise used.
  • Cooling of the hydraulic fluid is also more complex involving higher costs for refrigeration systems, or else imposing a reduction in the number of journeys per hour that the elevator can make.
  • The weight of the cupboard also adds to the difficulty of carrying and installing it.
  • The invention here described eliminates these drawbacks as will now be explained.
  • Subject of the invention is an hydraulically-operated means for elevators carrying either passengers or goods worked by an hydraulic, drive unit of a flat, compact and substantially parallelepiped structure, placed in the elevator shaft at the level of any stop made by the loading platform, between the wall of said shaft, in common with that of the landing, and the vertical guide of said loading platform nearest to said wall.
  • The rear wall of the drive unit substantially matches with the lateral wall of the elevator shaft.
  • On the wall of the shaft in common with that of the landing, an aperture, at the position of the lateral wall of the drive unit, is made to permit said drive unit to be passed through it laterally.
  • At the position of the aperture made in the wall of the landing, to permit passage of the drive unit, there is a cupboard with a door at the front and having an internal side substantially aligned with the lateral wall of the elevator shaft to allow the drive unit to fit in between the loading platform guide and said door.
  • The drive unit can slide freely sideways using sliding means above and below.
  • The drive unit's upper guiding means consists of a bar placed on the lateral wall of the elevator shaft, said bar extending onto the internal side of the cupboard and being substantially aligned with said shaft.
  • Mounted by pins on said bar are pulleys, in the races of which the upper horizontal end of a vertical rib, on the rear wall of the drive unit, slides freely.
  • The lower guiding means comprises horizontal carrying rollers fixed transversally by pins onto plates placed at the base of the drive unit's structure, said rollers sliding freely in a horizontal channel.
  • Said horizontal channel comprises a fixed section that extends between a bracket, fixed from the lateral wall of the elevator shaft to the nearest guide for the loading platform, to the landing, and comprises a mobile section, substantially the same as the fixed section and connected to it by a crosswise hinge that allows said mobile section to stand vertically, against the lateral wall of the drive unit, or be laid flat on the landing, aligned with the fixed section.
  • The lower guiding means consists of a horizontal telescopic complex comprising a pair of guides fixed to the base of the drive unit, a fixed channel that extends between a horizontal bracket, fixed between the lateral wall of the elevator shaft and the nearest guide for the loading platform, and the landing, and comprises an intermediate freely sliding channel.
  • Space is made In the lower end of the drive unit structure for an oil tank while uppermost is the set of valves placed vertically and the control solenoids lying horizontally.
  • The invention offers evident advantages.
  • The fact that the drive unit can be completely drawn out by hand onto the landing where the elevator has stopped, enables any internal component to be reached without the mechanic having to enter the elevator shaft.
  • This ensures the necessary space and accessibility for ordinary or special maintenance and repairs, in complete safety.
  • Installation of the drive unit inside the elevator shaft, isolated from the outside, siginifies optimum cooling without the need for a system of refrigeration, and less noise perceptible from the landings.
  • Manual operation to bring the cabin to the nearest floor is done from the landing by pressing a button switch, there being thus no need to draw the drive unit out of its usual position.
  • The convenient position of the cupboard, one of whose sides is substantially aligned with the side wall of the elevator shaft, means that a part of the drive unit's sructure is situated in said cupboard, so further reducing the bulk of the whole installation when mounted.
  • Characteristics and purposes of the disclosure will become still clearer from the following examples of its execution illustrated by diagrammatically drawn figures.
  • Fig. 1 Elevator shaft as in the invention, with extractable hydraulic drive unit, installed in place, and the cupboard beside the door opening at a landing, in perspective partially cut through.
  • Fig. 2 Elevator shaft, with the elevator, cross section.
  • Fig. 3 As above, with the drive unit being pulled out, cross section.
  • Fig. 4 As above, with the drive unit fully extracted, perspective.
  • Fig. 5 As in Figure 1, with the drive unit extracted, perspective.
  • Fig. 6 Detail of the upper guide system for extracting the drive unit, side view.
  • Fig. 7 Detail of the lower guide system for extracting the drive unit, side view.
  • Fig. 8 Detail of another version of the lower guide system for extracting the drive unit, perspective.
  • In Figures 1, 3, 4, the door at the shaft opening 25 on the landing 21 is not shown for simplicity.
  • The hydraulic drive unit 30 with its substantially flat and parallelepiped structure 31, which also houses a tank for oil, presents at the top a set of valves 35, the horizontally lying solenoids 36 for working the valves, and the button switch 37 for moving the cabin by hand in case of emergency.
  • The drive unit 30 is installed in the elevator shaft 20 for the elevator 10, said unit's rear wall 32 (Figures 2,3) substantially matching with the side wall 23 of said shaft, between the guide 15 of the elevator 10 and the door 61 of a cupboard 60 (Figure 1) placed in the front wall 22, with the door 26 (Figure 2) of the landing 21.
  • In the bottom 62 (Figure 5) of said cupboard 60 is an aperture 63 for passage of the drive unit 30 and, above said aperture, is the control panel 65 for movement, power and lighting.
  • The internal wall 64 of one side of the cupboard is substantially aligned with the side wall 23 of the elevator shaft 20.
  • The drive unit 30 can be drawn out onto the landing 21 sliding along a set of upper and lower guides.
  • The lower guide comprises a fixed channel 46 that extends from the horizontal bracket 45, fixed between the side wall 23 of the elevator shaft and the guide 15 of the elevator, to the landing 21.
  • The end of said channel 46 is joined to a second channel 47 substantially the same as the first, that, by means of a horizontal hinge 48, can bend vertically 47' (Figure 7) against the side wall 33 of the structure 31 of the drive unit, or can lie horizontally on the landing 21 as an extension of the channel 46 (Figures 3,4).
  • The drive unit slides in the channels 46, 47 facilitated by the rollers 40 supported by plates 41 and turning freely on pins 42.
  • The upper guide system for the drive unit comprises a horizontal bar 52 fixed onto the side wall 23 of the elevator shaft extending as far as the side 64 of the cupboard 60 and substantially aligned with said side wall 23.
  • By means of the pins 57, said bar 52 (Figure 6) supports the pulleys 55 within whose races 56 can freely slide the upper end of the flat rib 50 extending vertically from the rear wall 32 of the structure 31 of the drive unit.
  • Maintenance work is clearly facilitated by the fact that, on opening the door 61 of the cupboard 60 and lowering the front section 47 of the guide channel 46, the drive unit can be manually drawn right out onto the landing 21 where the elevator stops.
  • Alternatively, the lower guide for the drive unit is made as shown in Figure 8, with a pair of parallel guides 70 fixed to the lower wall of of the unit's structure 31, a channel 72 that extends from the horizontal bracket 45, fixed to the guide 15 of the elevator shaft 20, to the landing 21, and a freely sliding intermediate channel 71.

Claims (8)

  1. Hydraulically-operated elevator system for passengers or goods comprising a hydraulic drive unit (30), a loading platform (10) and an elevator shaft (20) with a vertical guide of the loading platform,
    charactherized in that the hydraulic drive unit (30), with its flat compact substantially parallelepiped structure (31), is situated in the elevator shaft (20) at the position of any one stop of the loading platform (10), between the wall (22) of said elevator shaft (20) common with that of the landing (21) and the vertical guide (15) of said loading platform (10) nearest to said wall (22).
  2. Hydraulically-operated means (30) as in claim 1,
    characterized in that the drive unit (30) presents a structure (31) in whose lower end is a tank for oil and at whose upper end is the set of valves (35) placed vertically, and operating solenoids (36) laid horizontally .
  3. Hydraulically-operated means (30) as in claims 1, characterized in that, in the wall (22) of the elevator shaft (20), in common with that of the landing (21), an aperture (63) is made at the position of the lateral wall (33) of the drive unit (30), to allow said drive unit (30) to be passed through sideways
    and characterized in that, at the position of the aperture (63) in the wall (22) of the landing (21) for passage of the drive unit (30), there is a cupboard (60) with a door (61) at the front and with an internal side (62) substantially aligned with the side wall (23) of the shaft (20), the drive unit (30) being lodged between the guide (15) of the loading platform (10) and said door (61).
  4. Hydraulically-operated means (30) as in claim 1,
    characterized in that the drive unit (30) can make freely sliding lateral translations on upper and lower guide systems.
  5. Hydraulically-operated means (30) as in claim 4,
    characterized in that the upper guide system consists of a bar (52) placed on the side wall (23) of the elevator shaft (20) extending along the inner side (64) of the cupboard (60) substantially aligned with said shaft (20), there being pulleys (55) on said bar (52), held by pins (57), in whose races (56) can freely slide the upper hoizontal end of a vertical rib (50) on the rear wall (32) of the drive unit (30).
  6. Hydraulically=operated means (30) as in claim 4,
    characterized in that the lower guide system comprises horizontal carrying rollers (40) fixed transversally by pins (42) onto plates (41) placed on the base of the structure (31) of the drive unit (30), freely sliding in a horizontal channel (46,47).
  7. Hydraulically-operated means (30) as in claims I and 6,
    characterized in that said horizontal channel (46,47) comprises a fixed section (46) extending from a bracket (45), fitted between the side wall (23) of the elevator shaft (20) and the guide (15) nearest the loading platform (10), to the landing (21), and comprises a mobile section (47) substantially the same as the fixed section (46), joined to this latter by a crosswise hinge (48), so that said mobile section (47) can stand upright (47') against the lateral wall (33) of the drive unit (30), or lie flat, aligned with the fixed section (46), on the landing (21).
  8. Hydraulically-operated means (30) as in claims 1 and 4,
    characterized in that the lower guide system consists of a horizontal telescopic complex comprising a pair (70) of parallel guides fixed to the base of the drive unit (30), a fixed channel (72) extending from a horizontal bracket (45), mounted between the side wall (23) of the shaft (20) and the guide (15) nearest to the loading platform (10), to the landing (21) and has a freely sliding intermediate channel (71).
EP01925882A 2001-04-05 2001-04-17 Hydraulic drive unit mounted in the elevator shaft Expired - Lifetime EP1377516B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT2001MI000728A ITMI20010728A1 (en) 2001-04-05 2001-04-05 HYDRAULIC DRIVE FOR ELEVATORS AND LOADERS WITH BELT STROKE CONTROL UNIT
ITMI20010072 2001-04-05
PCT/IT2001/000190 WO2002081353A1 (en) 2001-04-05 2001-04-17 Hydraulic drive unit mounted in the elevator shaft

Publications (2)

Publication Number Publication Date
EP1377516A1 EP1377516A1 (en) 2004-01-07
EP1377516B1 true EP1377516B1 (en) 2006-03-08

Family

ID=11447445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01925882A Expired - Lifetime EP1377516B1 (en) 2001-04-05 2001-04-17 Hydraulic drive unit mounted in the elevator shaft

Country Status (5)

Country Link
EP (1) EP1377516B1 (en)
AT (1) ATE319646T1 (en)
DE (1) DE60117768D1 (en)
IT (1) ITMI20010728A1 (en)
WO (1) WO2002081353A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT1562849E (en) 2002-11-18 2006-11-30 Inventio Ag Elevator control unit integrated into a door jamb
GR1005031B (en) * 2003-05-13 2005-10-27 Kleemann@Ελλας@Αβεε Hydraulic lift with displaceable hydraulic valve block
JP5475000B2 (en) * 2008-12-05 2014-04-16 オーチス エレベータ カンパニー Elevator system including control electronics supported by elevator machine support
GB2500869A (en) * 2012-02-29 2013-10-09 Control Tech Ltd Cabinet for drive unit of lift/elevator.
CN106429670B (en) * 2015-08-07 2021-02-09 奥的斯电梯公司 Emergency operation device for elevator
EP3517478B1 (en) * 2018-01-29 2021-05-05 Otis Elevator Company Elevator component access cabinet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI95456C (en) 1994-05-04 1996-02-12 Kone Oy Arrangement of the elevator shaft wall opening and dashboard
IT1282980B1 (en) * 1996-05-09 1998-04-03 Gmv S P A CONTAINMENT STRUCTURE OF THE LIFT MACHINERY
EP1042209B1 (en) * 1998-02-26 2005-08-31 Otis Elevator Company Elevator system having drive motor located adjacent to hoistway door

Also Published As

Publication number Publication date
ITMI20010728A1 (en) 2002-10-05
ATE319646T1 (en) 2006-03-15
ITMI20010728A0 (en) 2001-04-05
EP1377516A1 (en) 2004-01-07
WO2002081353A1 (en) 2002-10-17
DE60117768D1 (en) 2006-05-04

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