EP1319627B1 - Elevator device - Google Patents

Elevator device Download PDF

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Publication number
EP1319627B1
EP1319627B1 EP20000957123 EP00957123A EP1319627B1 EP 1319627 B1 EP1319627 B1 EP 1319627B1 EP 20000957123 EP20000957123 EP 20000957123 EP 00957123 A EP00957123 A EP 00957123A EP 1319627 B1 EP1319627 B1 EP 1319627B1
Authority
EP
European Patent Office
Prior art keywords
car
hoistway
counterweight
disposed
main rope
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.)
Active
Application number
EP20000957123
Other languages
German (de)
French (fr)
Other versions
EP1319627A4 (en
EP1319627A1 (en
Inventor
Atsushi Mitsubishi Denki Kabushiki Kaisha MITSUI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2000/006230 priority Critical patent/WO2002022486A1/en
Publication of EP1319627A1 publication Critical patent/EP1319627A1/en
Publication of EP1319627A4 publication Critical patent/EP1319627A4/en
Application granted granted Critical
Publication of EP1319627B1 publication Critical patent/EP1319627B1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0035Arrangement of driving gear, e.g. location or support
    • B66B11/0045Arrangement of driving gear, e.g. location or support in the hoistway
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0065Roping
    • B66B11/008Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave

Description

    TECHNICAL FIELD
  • The present invention relates to an elevator apparatus in which a driving machine is disposed in an upper portion inside a hoistway.
  • BACKGROUND ART
  • Conventional machine-roomless elevators of a type in which a driving machine is disposed in a pit in a hoistway are often adopted. However, in this type, countermeasures against flooding of the pit have been required.
  • In contrast to this, in a type in which the driving machine is disposed in an upper portion inside the hoistway, particularly in the case of one-to-one roping, if the position of the center of gravity of a car is to be suspended, it is necessary to ensure proportionate space between the car and a top portion of the hoistway since the main ropes are connected to an upper beam of the car, increasing the height dimensions of the hoistway.
  • EP 0 953 538 A2 refers to an elevator apparatus with an elevator path having a restricted height. Under a roping ratio of 1:1, a thin driving unit having a traction sheave and a driving mechanism is disposed between an inner wall of the elevator path and a space occupied by an elevator car rising and falling in the elevator path. On the lower side of the car pitch parts for connection with the suspension rope may be arranged. Further, car return sheaves may be attached on the side walls defining the elevator part so as not to interfere with the occupied space based by the car process of moving upward and downward.
  • EP 1 018 480 A2 refers to an elevator system wherein a drive sheave is provided on the hoisting machine in a rotatable manner such that the rotor axis on the drive sheave is oriented vertically.
  • DISCLOSURE OF THE INVENTION
  • The present invention aims to solve the above problems and an object of the present invention is to provide an elevator apparatus enabling increases in height dimensions of a hoistway to be suppressed while disposing a driving machine in an upper portion inside the hoistway.
  • According to one aspect of the present invention, there is provided an elevator apparatus including: a hoistway having a hoistway wall; a driving machine disposed in an upper portion inside the hoistway, having: a driving machine body; and a drive sheave rotated by the driving machine body around a rotating shaft extending in a vertical direction; a main rope group wound around the drive sheave; and a car and a counterweight suspended inside the hoistway by the main rope group so as to be raised and lowered inside the hoistway by the driving machine, wherein first and second main rope connection portions are disposed on the car so as to be positioned on opposite sides of the car in a vertical plane of projection, first and second car return sheaves are disposed above the first and second main rope connection portions in an upper portion inside the hoistway, a counterweight return sheave is disposed above the counterweight in an upper portion inside the hoistway, and the main rope group has a first main rope, a first end portion of which passes through the first car return sheave and is connected to the first main rope connection portion and a second end portion of which passes through the counterweight return sheave and is connected to the counterweight, and a second main rope, a first end portion of which passes through the second car return sheave and is connected to the second main rope connection portion and a second end portion of which passes through the counterweight return sheave and is connected to the counterweight.
  • According to another aspect of the present invention, there is provided an elevator apparatus including: a hoistway having a hoistway wall; a driving machine disposed in an upper portion inside the hoistway, having: a driving machine body; and a drive sheave rotated by the driving machine body around a rotating shaft extending in a vertical direction; a main rope having a car end portion and a counterweight end portion secured to an upper portion inside the hoistway, an intermediate portion being wound around the drive sheave; a car having mutually opposite first and second side surfaces, being suspended inside the hoistway by the main rope between the drive sheave and the car end portion so as to be raised and lowered inside the hoistway by the driving machine; a counterweight disposed between the first side surface and the hoistway wall, being suspended inside the hoistway by the main rope between the drive sheave and the counterweight end portion so as to be raised and lowered inside the hoistway by the driving machine; a car return sheave disposed in an upper portion inside the hoistway and around which the main rope is wound, for guiding the main rope from the drive sheave to the car; and a counterweight return sheave disposed in an upper portion inside the hoistway and around which the main rope is wound, for guiding the main rope from the drive sheave to the counterweight, wherein the driving machine is disposed above a corner portion of a rear portion of the car on a side near the counterweight, and the car and counterweight return sheaves are disposed above a space between the first side surface and the hoistway wall.
  • BRIEF DESCRIPTION OF THE DRAWINGS
    • Figure 1 is a general plan showing an elevator apparatus according to Embodiment 1 of the present invention;
    • Figure 2 is a side elevation showing the elevator apparatus in Figure 1;
    • Figure 3 is a perspective showing a construction of first and second main ropes from Figure 1;
    • Figure 4 is a general plan showing an elevator apparatus according to Embodiment 2 of the present invention;
    • Figure 5 is a side elevation showing the elevator apparatus in Figure 4;
    • Figure 6 is a general plan showing an elevator apparatus according to Embodiment 3 not being part of the present invention; and
    • Figure 7 is a side elevation showing the elevator apparatus in Figure 6.
    BEST MODE FOR CARRYING OUT THE INVENTION
  • Preferred embodiments of the present invention will now be explained with reference to the drawings.
  • Embodiment 1
  • Figure 1 is a general plan showing an elevator apparatus according to Embodiment 1 of the present invention, and Figure 2 is a side elevation showing the elevator apparatus in Figure 1.
  • In the figures, a hoistway 1 has hoistway walls 1a to 1c. A pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed inside the hoistway 1. A car 4 is guided by the car guide rails 2 so as to be raised and lowered inside the hoistway 1. A counterweight 5 is guided by the counterweight guide rails 3 so as to be raised and lowered inside the hoistway 1. The counterweight 5 is disposed behind the car 4.
  • A driving machine (a hoisting machine) 6 for raising and lowering the car 4 and the counterweight 5 is disposed horizontally in an upper portion inside the hoistway 1. The driving machine 6 is disposed above a first corner portion of a rear portion of the car 4. The driving machine 6 also has a driving machine body 7 and a drive sheave 8. The drive sheave 8 is rotated by the driving machine body 7 around a rotating shaft extending in a vertical direction.
  • First and second main rope connection portions 9 and 10 are disposed on both sides of a lower portion of the car 4. The first and second main rope connection portions 9 and 10 are disposed symmetrically about the position of the center of gravity of the car 4 so as to be positioned on opposite sides of the car 4 in a vertical plane of projection.
  • First and second car return sheaves 11 and 12 are disposed in an upper portion inside the hoistway 1 above the first and second main rope connection portions 9 and 10. A counterweight return sheave 13 is disposed in an upper portion inside the hoistway 1 above the counterweight 5. These return sheaves 11 to 13 are each rotatable around a rotating shaft extending in a horizontal direction.
  • The first and second car return sheaves 11 and 12 are disposed between the hoistway walls 1a and 1b and a region projected vertically from the car 4, and the first and second car return sheaves 11 and 12 are parallel to each of the hoistway walls 1a and 1b. A direction-changing pulley 14 rotatable around a rotating shaft extending in a vertical direction is disposed above a second corner portion of the rear portion of the car 4.
  • A main rope group 15 for suspending the car 4 and the counterweight 5 inside the hoistway 1 is wound around the drive sheave 8. The main rope group 15 has a plurality of first main ropes 16 and a plurality of second main ropes 17. These main ropes 16 and 17 are each composed of a synthetic fiber rope.
  • First end portions of the first main ropes 16 pass through the first car return sheave 11 and are connected to the first main rope connection portion 9, and second end portions pass through the counterweight return sheave 13 and are connected to an upper portion of the counterweight 5. First end portions of the second main ropes 17 pass through the direction-changing pulley 14 and the second car return sheave 12 and are connected to the second main rope connection portion 10, and second end portions pass through the counterweight return sheave 13 and are connected to an upper portion of the counterweight 5.
  • In other words, the first main ropes 16 and the second main ropes 17 connected to the counterweight 5 are branched off in two directions at the drive sheave 8 and connected to the car 4.
  • Figure 3 is a perspective showing a construction of the first and second main ropes 16 and 17 from Figure 1. In the figure, an inner strand layer 24 having a plurality of inner strands 22 and filler strands 23 disposed in gaps between these inner strands 22 is disposed around a core wire 21. Each of the inner strands 22 is composed of a plurality of aramid fibers and an impregnating material such as polyurethane or the like. The filler strands 23 are composed of a polyamide, for example.
  • An outer strand layer 26 having a plurality of outer strands 25 is disposed around an outer circumference of the inner strand layer 24. Each of the outer strands 25 is composed of a plurality of aramid fibers and an impregnating material such as polyurethane or the like in a similar manner to the inner strands 22.
  • A friction-reducing coating layer 27 for preventing abrasion of the strands 22 and 25 due to friction among the strands 22 and 25 in the sheaves such as the drive sheave 11, etc., is disposed between the inner strand layer 24 and the outer strand layer 26. A protective coating layer 28 is also disposed on an outer circumferential portion of the outer strand layer 26.
  • The car 4 and the counterweight 5 are suspended inside the hoistway 1 by a plurality of main ropes 12 having the above construction. The synthetic fiber rope has a high coefficient of friction compared to a steel rope and is superior in flexibility.
  • In an elevator apparatus of this kind, because the main rope group 15 is distributed into the first and second main ropes 16 and 17, and the car 4 is suspended by the first and second main rope connection portions 9 and 10 disposed on both sides thereof, the car 4 can be stably suspended at its center of gravity.
  • Furthermore, since the first and second main rope connection portions 9 and 10 are disposed on both sides of the car 4, it is not necessary to dispose connection portions for the main rope group 15 on an upper portion of the car 4. Consequently, the dimensions of the upper portion of the car 4 can be reduced, enabling suppression of increases in height dimensions of the hoistway 1 while disposing the driving machine 6 in the upper portion inside the hoistway 1.
  • In addition, because the first and second car return sheaves 11 and 12 are disposed between the hoistway walls 1a and 1b and the region projected vertically from the car 4, the first and second car return sheaves 11 and 12 do not come into contact with the car 4. Consequently, increases in height dimensions of the hoistway 1 can be suppressed.
  • Increases in height dimensions of the hoistway 1 can be further suppressed if lower ends of the first and second car return sheaves 11 and 12 are disposed so as to be lower than a car ceiling position when the car 4 is positioned at a maximum point of upward motion, .
  • Furthermore, since the counterweight 5 is disposed behind the car 4, the driving machine 6 is disposed above the first corner portion of the rear portion of the car 4, and the direction-changing pulley 14 is disposed above the second corner portion of the rear portion of the car 4, the equipment can be disposed utilizing space inside the hoistway 1 effectively and can be easily adapted to changes in frontage dimensions and depth dimensions of the car 4.
  • Because first and second main ropes 16 and 17 composed of a synthetic fiber rope having a high coefficient of friction and superior flexibility are used, diameters of the drive sheave 8, the return sheaves 11 to 13, and the pulley 14 can be reduced, enabling suppression of increases in height dimensions of the hoistway 1.
  • Embodiment 2
  • Figure 4 is a general plan showing an elevator apparatus according to Embodiment 2 of the present invention, and Figure 5 is a side elevation showing the elevator apparatus in Figure 4.
  • In the figures, a first direction-changing pulley 18 rotatable around a rotating shaft extending in a vertical direction is disposed above the second corner portion of the rear portion of the car 4. The first and second main ropes 16 and 17 are wound around the first direction-changing pulley 18 and are branched off at the first direction-changing pulley 18.
  • A second direction-changing pulley 19 rotatable around a rotating shaft extending in a vertical direction is disposed between the first direction-changing pulley 18 and the first car return sheave 11. The first main ropes 16 pass from the first direction-changing pulley 18, through the second direction-changing pulley 19 and the first car return sheave 11, and are connected to the first main rope connection portion 9. The rest of the construction is similar to that of Embodiment 1.
  • In an elevator apparatus of this kind, since the first and second main ropes 16 and 17 are branched off at the first direction-changing pulley 18, in addition to effects similar to those of Embodiment 1, winding angles of the first and second main ropes 16 and 17 onto the drive sheave 8 can be made the same, and sufficient winding angles can be achieved.
  • Embodiment 3 (not part of the invention)
  • Figure 6 is a general plan showing an elevator apparatus according to Embodiment 3, and Figure 7 is a side elevation showing the elevator apparatus in Figure 6.
  • In the figures, a hoistway 31 has hoistway walls 31a to 31c. A pair of car guide rails 32 and a pair of counterweight guide rails 33 are installed inside the hoistway 31. A car 34 is guided by the car guide rails 32 so as to be raised and lowered inside the hoistway 31. The car 34 has mutually opposite first and second side surfaces 34a and 34b.
  • A counterweight 35 is guided by the counterweight guide rails 33 so as to be raised and lowered inside the hoistway 31. The counterweight 35 is disposed between the first side surface 34a of the car 34 and the hoistway walls 31a.
  • A driving machine (a hoisting machine) 36 for raising and lowering the car 34 and the counterweight 35 is disposed horizontally in an upper portion inside the hoistway 31. The driving machine 36 is disposed above a first corner portion of a rear portion of the car 34. The driving machine 36 also has a driving machine body 37 and a drive sheave 38. The drive sheave 38 is rotated by the driving machine body 37 around a rotating shaft extending in a vertical direction.
  • The car 34 and the counterweight 35 are suspended inside the hoistway 31 by main ropes 39 composed of a synthetic fiber rope. The main ropes 39 have car end portions 39a and counterweight end portions 39b secured to car and counterweight rope fastener portions 40a and 40b in an upper portion inside the hoistway 31, intermediate portions being wound around the drive sheave 38. The construction of the main ropes 39 is similar to that in Figure 3.
  • The car 34 is suspended inside the hoistway 31 by the main ropes 39 between the drive sheave 38 and the car end portions 39a. The counterweight 35 is suspended inside the hoistway 31 by the main ropes 39 between the drive sheave 38 and the counterweight end portions 39b.
  • A car return sheave 41 for guiding the main ropes 39 from the drive sheave 38 to the car 34 and a counterweight return sheave 42 for guiding the main ropes 39 from the drive sheave 38 to the counterweight 35 are disposed in upper portions inside the hoistway 31. The car and counterweight return sheaves 41 and 42 are disposed above a space between the first side surface 34a of the car 34 and the hoistway wall 31a.
  • A pair of rotatable car suspension sheaves 43 around which the main ropes 39 are wound are disposed on a lower portion of the car 34. A rotatable counterweight suspension sheave 44 around which the main ropes 39 are wound is disposed on an upper portion of the counterweight 35.
  • In an elevator apparatus of this kind, since the car and counterweight return sheaves 41 and 42 are disposed between the first side surface 34a of the car 34 and the hoistway wall 31a in a vertical plane of projection, planar dimensions of the hoistway 31 can be reduced. Furthermore, winding angles of the main ropes 39 onto the drive sheave 38 can be sufficiently ensured.

Claims (5)

  1. An elevator apparatus comprising:
    a hoistway (1) having a hoistway wall (1a, 1b, 1c);
    a driving machine (6) disposed in an upper portion inside said hoistway (1), having:
    a driving machine body (7); and
    a drive sheave (8) rotated by said driving machine body (7)
    a main rope group (15) wound around said drive sheave (8); and
    a car (4) and a counterweight (5) suspended inside said hoistway (1) by said main rope group (15) so as to be raised and lowered inside said hoistway (1) by said driving machine (6), wherein
    first and second main rope connection portions (9, 10) are disposed on said car (4) so as to be positioned on opposite sides of said car (4) in a vertical plane of projection, first and second car return sheaves (11, 12) are disposed above said first and second main rope connection portions (9, 10) in an upper portion inside said hoistway (1),
    a counterweight return sheave (13) is disposed above said counterweight (5) in an upper portion inside said hoistway (1), and
    said main rope group (15) has:
    a first main rope (16), a first end portion of which passes through said first car return sheave (11) and is connected to said first main rope connection portion (9) and a second end portion of which passes through said counterweight return sheave (13) and is connected to said counterweight (5); and
    a second main rope (17), a first end portion of which passes through said second car return sheave (12) and is connected to said second main rope connection portion (10) and a second end portion of which passes through said counterweight return sheave (13) and is connected to said counterweight (5), characterized in that the drive sheave (8) is rotated around a rotating shaft extending in a vertical direction, and
    (a) in that the first and second car return sheaves (11, 12) are parallel to each of the opposite hoistway walls (la, 1b) and/or in that
    (b) a first direction-changing pulley (18) being rotatable around a rotating shaft extending in a vertical direction is disposed in an upper portion inside said hoistway (1), said first and second main ropes (16, 17) are wound around said first direction-changing pulley (18) and branched off at said first direction-changing pulley (18), and a second direction-changing pulley (19) being rotatable around a rotating shaft extending in a vertical direction around which said first main rope (16) is wound is disposed between said first direction-changing pulley (18) and said first car return sheave (11).
  2. The elevator apparatus according to Claim 1, wherein said first and second car return sheaves (11, 12) are disposed between said hoistway wall (la, 1b, 1c) and a region projected vertically from said car (4).
  3. The elevator apparatus according to Claim 2, wherein said counterweight (5) is disposed behind said car (4), and said driving machine (6) is disposed above a first corner portion of a rear portion of said car (4).
  4. The elevator apparatus according to Claim 3, wherein a direction-changing pulley (14) being rotatable around a rotating shaft extending in a vertical direction is disposed in an upper portion inside said hoistway (1), said first and second main ropes (16, 17) are branched off at said drive sheave (8), and said second main rope (17) is wound around said direction-changing pulley (14).
  5. The elevator apparatus according to Claim 1, wherein said first and second main ropes (16, 17) are composed of a synthetic fiber rope.
EP20000957123 2000-09-12 2000-09-12 Elevator device Active EP1319627B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/006230 WO2002022486A1 (en) 2000-09-12 2000-09-12 Elevator device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09150612A EP2042462B1 (en) 2000-09-12 2000-09-12 Elevator apparatus

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP09150612A Division EP2042462B1 (en) 2000-09-12 2000-09-12 Elevator apparatus

Publications (3)

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EP1319627A1 EP1319627A1 (en) 2003-06-18
EP1319627A4 EP1319627A4 (en) 2008-09-03
EP1319627B1 true EP1319627B1 (en) 2009-12-09

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP09150612A Active EP2042462B1 (en) 2000-09-12 2000-09-12 Elevator apparatus
EP20000957123 Active EP1319627B1 (en) 2000-09-12 2000-09-12 Elevator device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09150612A Active EP2042462B1 (en) 2000-09-12 2000-09-12 Elevator apparatus

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EP (2) EP2042462B1 (en)
JP (1) JPWO2002022486A1 (en)
CN (1) CN1178844C (en)
DE (1) DE60043516D1 (en)
WO (1) WO2002022486A1 (en)

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Publication number Priority date Publication date Assignee Title
DE60237316D1 (en) * 2002-06-10 2010-09-23 Mitsubishi Electric Corp Lift
JPWO2004065275A1 (en) * 2003-01-23 2006-06-22 三菱電機株式会社 Elevator equipment
US7562745B2 (en) 2003-06-18 2009-07-21 Toshiba Elevator Kabushiki Kaisha Elevator with an operation space in a center of a machine room
WO2004080875A1 (en) 2003-03-10 2004-09-23 Mitsubishi Denki Kabushiki Kaisha Elevator apparatus
DE60333795D1 (en) * 2003-03-12 2010-09-23 Mitsubishi Electric Corp Lift device
DE10325937B4 (en) * 2003-06-07 2005-06-23 Schmitt Aufzüge GmbH Elevator with a rope-driven cabin
WO2005056456A1 (en) * 2003-12-11 2005-06-23 Mitsubishi Denki Kabushiki Kaisha Elevator apparatus
CN1922092A (en) * 2004-02-19 2007-02-28 三菱电机株式会社 Machine room-less elevator
US20070045053A1 (en) * 2004-04-28 2007-03-01 Mitsubishi Denki Kabushiki Kaisha Elevator apparatus
US7331424B2 (en) 2004-06-07 2008-02-19 Mitsubishi Denki Kabushiki Kaisha Elevator apparatus
JP4270051B2 (en) 2004-07-14 2009-05-27 株式会社日立製作所 Elevator equipment
CN100590053C (en) * 2004-09-22 2010-02-17 三菱电机株式会社 Elevator apparatus
WO2006095390A1 (en) * 2005-03-04 2006-09-14 Mitsubishi Denki Kabushiki Kaisha Elevator apparatus
KR100752860B1 (en) * 2005-12-28 2007-08-29 미쓰비시덴키 가부시키가이샤 Elevator apparatus
KR100804886B1 (en) * 2006-02-06 2008-02-20 미쓰비시덴키 가부시키가이샤 Elevator apparatus
DE102006044669A1 (en) 2006-02-09 2008-04-03 Aufzugteile Bt Gmbh Machine roomless propulsion lift
KR100804887B1 (en) * 2007-10-12 2008-02-20 미쓰비시덴키 가부시키가이샤 Elevator apparatus
CN104192673A (en) * 2014-03-18 2014-12-10 永大电梯设备(中国)有限公司 Elevator device without machine room

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JPS62197672U (en) * 1986-06-03 1987-12-16
CZ282660B6 (en) * 1994-03-02 1997-08-13 Inventio Ag Bearer rope of lifting and transport facilities
CA2169431C (en) * 1995-03-06 2005-07-12 Claudio De Angelis Equipment for recognising when synthetic fibre cables are ripe for being discarded
ES2197280T3 (en) * 1996-11-11 2004-01-01 Inventio Ag Elevator installation with a driving unit disposed in the elevator box.
US6247557B1 (en) 1998-04-28 2001-06-19 Kabushiki Kaisha Toshiba Traction type elevator apparatus
JP4191331B2 (en) * 1999-01-08 2008-12-03 三菱電機株式会社 Elevator equipment

Also Published As

Publication number Publication date
EP1319627A4 (en) 2008-09-03
JPWO2002022486A1 (en) 2004-01-22
CN1387491A (en) 2002-12-25
EP2042462B1 (en) 2011-05-18
CN1178844C (en) 2004-12-08
WO2002022486A1 (en) 2002-03-21
DE60043516D1 (en) 2010-01-21
EP2042462A1 (en) 2009-04-01
EP1319627A1 (en) 2003-06-18

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