EP1622823B1 - Sealing device for elevator door - Google Patents

Sealing device for elevator door Download PDF

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Publication number
EP1622823B1
EP1622823B1 EP04732029A EP04732029A EP1622823B1 EP 1622823 B1 EP1622823 B1 EP 1622823B1 EP 04732029 A EP04732029 A EP 04732029A EP 04732029 A EP04732029 A EP 04732029A EP 1622823 B1 EP1622823 B1 EP 1622823B1
Authority
EP
European Patent Office
Prior art keywords
door
elevator
hall
sealing member
roller
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
EP04732029A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1622823A1 (en
Inventor
Seiichi c/o Toshiba Elevator Kabushiki Kaisha SOMEYA
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.)
Toshiba Elevator and Building Systems Corp
Original Assignee
Toshiba Elevator Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Elevator Co Ltd filed Critical Toshiba Elevator Co Ltd
Publication of EP1622823A1 publication Critical patent/EP1622823A1/en
Application granted granted Critical
Publication of EP1622823B1 publication Critical patent/EP1622823B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B66B13/308—Details of seals and joints
    • 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

Definitions

  • the present invention relates to a sealing device for an elevator door, which seals a gap between an elevator door and a door adjacent member provided adjacent to the door.
  • An elevator gate is provided in a wall surface of an elevator hall of a building and the gate is communicated to a shaft of an elevator in the building.
  • the gate includes a gate-shaped three-sided frame (door adjacent member).
  • a hall door (elevator door) that opens/closes the gate is provided on a rear surface side of the three-sided frame. The gate is closed by the hall door in a normal situation.
  • the hall door includes a hanger at its upper section.
  • the hanger has a plurality of rotatable rollers.
  • the gate has a header at an inner side of its upper section.
  • the header includes a hanger rail that extends in a horizontal direction. The hall door is suspended from the hanger rail downwards while each roller is engaged with the hanger rail. As the hall door moves right to left or vice versa along the hanger rail, the gate is opened or closed, respectively.
  • a doorsill is installed at a bottom section of the gate to be flushed with the floor surface of the elevator hall.
  • a guide groove is formed in an upper surface of the doorsill.
  • a guide shoe is provided on a bottom portion of the hale door to fit with the guide groove with some play. When the hall door is opened/closed, the guide shoe slides along the guide groove.
  • an elevator cage that moves through the shaft entails the following problem. That is, if there is a gap between a doorway of the elevator cage and a cage door, the smoke of the fire can enter the cage through this gap. Thus, passengers in the cage are exposed to danger.
  • the sealing member provided at the bottom portion of the hall door and the guide groove of the doorsill should be brought into tight contact with each other.
  • the frictional force between the sealing member and the guide groove is increased, which makes it difficult to open or close the hall door.
  • the sealing member wears out in a short period of time.
  • the contact force between the sealing member and the guide groove should be weakened; however, at the time, if the contact force is weakened, the air-tightness is decreased accordingly.
  • GB-A-1 243 807 discloses a sealing device for a sliding window or a sliding door, wherein sashes are slidably supported between a sill member and head member of a frame.
  • a U-shaped seal strip carrier is supported by a lower rail located at the lower end of the sash.
  • the seal strip carrier has a lifting roller contacting a rail provided on the sill member.
  • Elastic sealing strips and are attached to the lower end of the seal strip carrier.
  • the seal strip carrier is downwardly urged by a spring.
  • the sealing strips are out of contact with the rail before the sash reaches its closed position.
  • the rail is formed with a depression. When the sash reaches the closed position, the lifting roller is fitted into the depression. Accordingly, the seal strip carrier is downwardly pressed by the spring, whereby the sealing strips are brought into contact with the rail. As a result, a gap between the rail and the lower rail of the sash is closed by the seal strip carrier.
  • the elastic member is formed by a plate spring, on which plate spring the sealing member is provided. Therefore, the spring force of the plate spring is directly applied to the sealing member, which means that the plate spring directly presses the sealing member against the door adjacent member. Therefore, the sealing member is of a high responsiveness when closing the gap. Furthermore, since the plate spring presses only the sealing member, the spring force of the plate spring can be set to a low value, and hence the plate spring can be made compact. Furthermore, the structure according to claim 1 can be formed of a smaller number of components than the structure of D1, which is a further advantage in reduction of the installation space of the elevator.
  • FIG. 1 is a front view of hall doors 2 as an elevator door provided on a gateway 1 of an elevator hall, when viewed from a shaft side.
  • the gateway 1 comprises a three-sided frame 3 and a doorsill 4.
  • the three-sided frame 3 and doorsill 4 are arranged to surround the hall doors 2 and they serve as a door adjacent member provided adjacent to the hall doors 2.
  • the three-sided frame 3 has a gate shape formed along the periphery of the gateway 1 expect for the lower portion thereof.
  • the three-sided frame 3 includes a pair of vertical frames 7 arranged on both right and left sides, and an upper frame 8 bridged between the upper sections of the vertical frames 7, which are formed into a gate shape.
  • a header 9 is formed united with an upper portion of the upper frame 8.
  • a hanger rail 10 is horizontally mounted to a side surface of the header 9 via a bracket 11 shown in FIG. 3 to extend in the right and left direction.
  • Pair of hall doors 2 are placed to be in parallel to each other in the right and left direction on a rear surface side of the three-sided frame 3.
  • Each of the hall doors 2 has a hanger 13 at its upper section.
  • a plurality of rollers 14 are rotatably provided on right and left sections adjacent to side surfaces of each hanger 13.
  • Each hall door 2 is movably suspended on the hanger rail 10 by these rollers 14. As the hall doors 2 move, the gateway 1 is opened or closed.
  • FIGS. 2 and 3 each show an enlarged view of the structure of the suspension portion of the hall doors 2.
  • a sealing mechanism 17 designed to seal a gap G1 between the hall doors 2 and the upper frame 8 of the three-sided frame 3 is provided in the suspension portion.
  • a plate spring 18 serving as an elastic member is provided on a side surface of the hanger 13 of the hall door 2, which faces the three-sided frame 3.
  • a lower half portion of the plate spring 18 has approximately the same width as that of the hall doors 2, and an upper portion thereof is fixed to the hanger 13.
  • a free end side of the lower portion of the spring plate 18 is inclined towards the three-sided frame 3 with respect to the vertical surface.
  • a sealing member 20 made of an elastic material such as rubber is mounted on the lower edge portion.
  • the sealing member 20 has a hollow main portion 20a and a tongue piece portion 20b extending downwards from the main portion 20a, which are formed as a unity body.
  • the sealing member 20 is formed to have substantially the same length as the width of the hall doors 2.
  • the hall doors 2 each have an airtight plate 19 having substantially the same width as that of the hall doors 2 on an upper end surface of each.
  • a standup wall 8a is formed unity with the upper frame 8 of the three-sided frame 3.
  • the plate spring 18 presses the main portion 20a of the sealing member 20 against the standup wall 8a of the three-sided frame 3, and the tongue piece portion 20b against the airtight place 19 of each hall door 2.
  • Pair of rollers 22a and 22b are mounted to approximately a vertical middle portion of the plate spring 18 to be separated on both left and right sides such that the rollers 22a and 22b face a roller rolled portion 10a of a side surface of the hanger rail 10.
  • the rollers 22a and 22b are arranged in hi-and-low positions to be displaced from each other, and they are supported rotatably in the rotating direction of the vertical shaft each via a support shaft 23.
  • Each of the rollers 22a and 22b is bright into contact with the roller rolled portion 10a on the side surface of the hanger rail 10 by the elastic force of the plate spring 18. With this stricture, as the hall doors 2 move in the right and left direction, each of the rollers 22a and 22b rotates on the surface of the roller rolled portion 10a.
  • Recess step portions 24a and 24b are formed in the roller rolled portion 10a in the middle of rolled paths of the rollers 22a and 22b, respectively.
  • the rollers 22a and 22b drop in the recess step portions 24a and 24b, respectively, by the elastic force of the plate spring 18.
  • the recess step portions 24a and 24b are illustrated to be on the same cross section for convenience of showing.
  • the doorsill 4 is provided horizontally in the bottom portion of the gateway 1 to be flushed with the floor surface of the elevator hall and extended in the right and left direction, as shown in FIG. 1 and FIGS. 4A and 4B .
  • the guide groove 27 is formed in the upper surface of the doorsill 4 along its longitudinal direction.
  • a plurality of guide shoes 28 are mounted to the lower end portion of each of the hall doors 2.
  • Each of the guide shoes 28 is slidably fit in the guide groove 27.
  • a plurality of through holes 27a which serve to discharge dusts and trashes, are formed at respective positions in the middle of the bottom surface of the guide groove 27 along its longitudinal direction.
  • a plate spring 30 serving as an elastic member is mounted on a lower portion of an inner wall surface of each hall door 2.
  • the plate spring 30 has a bent portion 30a at substantially the vertical middle section thereof, and an upper section of the spring is fixed to the respective hall door 2.
  • a sealing member 31 made of an elastic material such as rubber is mounted horizontally on a lower portion of the plate spring 30. The sealing member 31 displaces up and down as the bent portion 30a elastically deforms.
  • the sealing member 31 has substantially the same length as the width of each hall door 2, and it is slidably fit with the rear surface of the respective hall door 2.
  • the sealing member 31 is supported by the plate spring 30 such that the lower edge thereof project from the respective hall door 2 downwards to face the upper surface of the doorsill 4.
  • the sealing member 31 is placed at a position on a side of the elevator hall with respect to the guide groove 27 of the doorsill 4.
  • the rollers 34a and 34b are mounted on the respective end portions of the sealing member 31 via support shafts 33, respectively.
  • the rollers 34a and 34b are arranged to be displaced from each other in a front and rear direction in an inner side of the sealing member 31, and they are supported rotatably around the respective support shafts 33 provided horizontally.
  • a part of the upper surface of the doorsill 4 is formed into a roller rolled portion 4a on which the rollers 34a and 34b rotate.
  • recess step portions 35a and 35b that correspond to the rollers 34a and 34b are formed in a partial zone in the middle of the roller rolled portion 4a.
  • the rollers 34a and 34b drop in the respective recess step portions 35a and 35b by the elastic force of the plate spring 30.
  • the recess step portions 35a and 35b are illustrated to be on the same cross section for convenience of showing.
  • the rollers 22a and 22b of the sealing mechanism 17 drop in the respective recess step portions 24a and 24b of the hanger rail 10 as shown in FIG. 3A .
  • the plate spring 18 makes the main portion 20a of the sealing member 20 provided at its lower edge portion fit to the standup wall 8a of the upper frame 8 of the three-sided frame 3, and also the tongue piece portion 20b fit to the airtight plate 19 of the respective hall door 2. In this manner, the gap G1 between the respective hall door 2 and the upper frame 8 of the three-sided frame 3 is sealed.
  • the rollers 34a and 34b of the sealing mechanism 29 drop in the respective recess step portions 35a and 35b formed in the roller rolled portion 4a.
  • the sealing member 31 is fit to the upper surface of the doorsill 4 by the elastic force of the plate spring 18. In this manner, the gap G2 between the respective hall door 2 and the doorsill 4 is sealed.
  • the sealing member 31 is provided between the elevator hall and the guide groove 27 so as to shut down between them. Therefore, even if the through holes 27a are formed in the bottom surface of the guide groove 27 provided in the doorsill 4 to discharge dusts and trashes, it is possible to inhibit smoke in the elevator hall from entering the shaft.
  • the hall doors 2 are slide to the right and left direction from the closed state, thus opening the gateway 1.
  • the rollers 22a and 22b of the sealing mechanism 17 leave from the respective recess step portions 24a and 24b of the roller rolled portion 10a.
  • the rollers 22a and 22b run on the surface of the roller rolled portion 10a, and they rotate along the rumbling portion 10a.
  • the sealing member 20 and the standup wall 8a are maintained in a non-contact state. Therefore, the hall doors 2 can be opened smoothly, and further the wearing-out of the sealing member 20 can be prevented. Further, while each of the hall doors 2 is moving in the direction that closes the gateway 1, the sealing member 20 and the standup wall 8a are continuously maintained in a non-contact state. Therefore, the hall doors 2 can be closed smoothly, and further the wearing-out of the sealing member 20 can be prevented.
  • the rollers 22a and 22b which form a pair, are provided separately on the respective left and right ends of the plate spring 18.
  • the rollers are arranged such that they are displaced from each other in the front and rear direction, which is the thickness direction of the hall doors 2.
  • the rollers 22a and 22b of the hall door 2 appropriately engage in or leave from the respective recess step portions 24a and 24b corresponding to these rollers. Therefore, it is possible to prevent such an error that the rollers engage in or leave from the other recess step portions 24b and 24a while the doors are moving.
  • the sealing mechanism 29 provided between the hall doors 2 and the doorsill 4 operates in the following manner. That is, as the hall doors 2 start to move, the rollers 34a and 34b of the sealing mechanism 29 leave from the respective recess step portions 35a and 35b of the doorsill 4.
  • the rollers 34a and 34b run up on the surface of the roller rolled portion 4a against the elastic force of the plate spring 30, and they rotate on the surface.
  • the sealing member 31 and the doorsill 4 are maintained in a non-contact state. Therefore, the hall doors 2 can be moved smoothly, and further the wearing-out of the sealing member 31 can be prevented. Further, while the hall doors 2 are moving in the direction that closes the gateway 1, the sealing member 31 and the doorsill 4 are continuously maintained in a non-contact state. Therefore, the hall doors 2 can be closed smoothly, and further the wearing-out of the sealing member 31 can be prevented.
  • the rollers 34a and 34b which form a pair, are provided separately on the respective left and right ends of the sealing member 31.
  • the rollers are arranged such that they are displaced from each other in the front and rear direction, which is the thickness direction of the hall doors 2.
  • the rollers 34a and 34b appropriately engage in or leave from the respective recess step portions 35a and 35b corresponding to these rollers. Therefore, it is possible to prevent such an error that the rollers 34a and 34b engage in or leave from the other recess step portions 35b and 35a while the hall doors 2 are moving.
  • the sealing mechanism 17 provided on the upper portion of the respective hall door 2 can be housed in an empty space inside the hanger 13. With this structure, the height of the door device is not increased as a whole, thereby making it possible to prevent an increase in the size of the door device.
  • the sealing members 20 and 31 of the sealing mechanisms 17 and 29, respectively are brought into tight contact with the side surface of the hanger rail 10 and the upper surface of the doorsill 4 by means of the elastic forces of the plate springs 18 and 30, respectively.
  • the sealing mechanisms 17 and 29 can seal the gaps G1 and G2 accurately without having to finely adjusting the sealing members 20 and 31, respectively, during the installation of these members.
  • a pair of rollers 34a and 34b are provided separately on the left and right ends of the sealing member 31.
  • one roller 34 should be provided at a middle portion of the sealing member 31 as shown in FIG. 7 .
  • the sealing mechanism 29 takes such a structure that the sealing member 31 is brought into contact with or separated from the upper surface of the doorsill 4 as the roller 34 moves in the vertical direction.
  • FIG. 8 A further embodiment not covered by the appended claims, is shown in FIG. 8 .
  • This embodiment provides a modified version of the sealing mechanism designed to seal the gap G1 created between the hall doors 2 and the upper frame 8 of the three-sided frame 3.
  • the bracket 11 that supports the hanger rail 10 includes a movable plate 40 mounted to face the hanger 13 of the respective hall door 2.
  • An upper end of the movable plate 40 is supported swingingly in the direction away from the hanger 13 by means of a pin 41.
  • the movable plate 40 is elastically urged in the direction that approaches the hanger 13 by a spring 42 serving as an elastic member.
  • a sealing member 45 made of an elastic material such as rubber is mounted on a lower end portion of the movable plate 40.
  • the sealing member 45 is extended in the longitudinal direction of the hanger rail 10.
  • the sealing member 45 has a hollow main portion 45a and a tongue piece portion 45b extended downwards from the main portion 45a, which are formed as an unity unit.
  • the main portion 45a is brought into contact with the airtight plate 19 provided on an upper end of the respective hall door 2.
  • the tongue piece portion 45b is brought into contact with an inner surface of the standup wall 8a of the upper frame 8 of the three-sided frame 3.
  • a roller rail 46 is mounted at approximately a vertical middle section of the movable plate 40 to face the hanger 13.
  • the roller rail 46 is extended in the longitudinal direction of the hanger rail 10.
  • a side surface of the roller rail 46 serves as a roller rolled portion 46a.
  • a longitudinal partial zone of the roller rolled portion 46a is formed into a recess step portion 46b as shown in FIG. 9 .
  • the roller 47 is mounted to a side surface of the hanger 13 to face the roller rolled portion 46a.
  • the roller 47 is supported by a support shaft 48 to be rotatable in the rotating direction around the vertical shaft.
  • the roller rolled portion 46a is brought into contact with the roller 47 by the elastic force of the spring 42.
  • FIG. 8 shows a state where the hall doors 2 are being opened or closed.
  • FIG. 9 shows the positions of the roller rolled portion 46a and the roller 47 in relation to each other.
  • the solid line indicates the opening or closing operation
  • the chain double-dashed line indicates the closed state.
  • the roller 47 is in contact with the roller rolled portion 46a, and as the hall doors 2 moves to open or close, the roller 47 rotates on the surface of the roller rolled portion 46a.
  • the sealing member 45 is maintained in a non-contact state with respect to the airtight plate 19 and standup wall 8a. With this structure, the hall doors 2 can be opened or closed smoothly, and further the wearing-out of the sealing member 45 can be prevented.
  • the movable plate 40 is pivoted around the pin 41 towards the hanger 13.
  • the spring 42 with its elastic force, brings the main portion 45a of the sealing member 45 into tight contact with the airtight plate 19, and the tongue piece portion 45b into tight contact with the standup wall 8a. In this manner, the gap G1 between the respective hall door 2 and the upper frame 8 of the three-sided frame 3 is sealed.
  • the gap G1 provided between the respective hall door 2 and the upper frame 8 is sealed.
  • Each of the above-described embodiments is directed to the hall doors 2, which is of a biparting type.
  • the doorway of the passenger cage of an elevator has a cage door, a doorway frame and a doorsill.
  • the cage door is an elevator door and it corresponds to a hall door provided in the passenger gateway of the elevator hall.
  • the doorway frame is a door adjacent member to the cage door, and it corresponds to the three-sided frame provided in the passenger gateway of the elevator hall.
  • the doorsill supports the bottom portion of the cage door and serves to guide the opening and closing operation of the door. Therefore, it is alternatively possible to provide, between the cage door and the doorway frame, a sealing mechanism having a similar structure to that of the mechanism employed in each of the embodiments.
  • the sealing device does not increase the size of the door device, or it does not require fine adjustment in the installation of the sealing member. Further, with the sealing device, it is possible to open and close the door smoothly, and prevent the wearing-out of the sealing member.
  • the present invention can be applied not only to the sealing device of the elevator door, but also to a slide-type door that requires air-tightness in a closed state.

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  • Elevator Door Apparatuses (AREA)
EP04732029A 2003-05-14 2004-05-10 Sealing device for elevator door Expired - Lifetime EP1622823B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003136046A JP4416435B2 (ja) 2003-05-14 2003-05-14 エレベータドアの密閉装置
PCT/JP2004/006585 WO2004101421A1 (en) 2003-05-14 2004-05-10 Sealing device for elevator door

Publications (2)

Publication Number Publication Date
EP1622823A1 EP1622823A1 (en) 2006-02-08
EP1622823B1 true EP1622823B1 (en) 2011-07-27

Family

ID=33447205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04732029A Expired - Lifetime EP1622823B1 (en) 2003-05-14 2004-05-10 Sealing device for elevator door

Country Status (6)

Country Link
EP (1) EP1622823B1 (zh)
JP (1) JP4416435B2 (zh)
CN (1) CN1697775B (zh)
MY (1) MY140794A (zh)
TW (1) TWI275560B (zh)
WO (1) WO2004101421A1 (zh)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5154073B2 (ja) * 2006-12-18 2013-02-27 エス・イー・シーエレベーター株式会社 エレベータ乗降口の扉装置
JP5142102B2 (ja) * 2008-03-06 2013-02-13 東芝エレベータ株式会社 エレベータかご
JP5372672B2 (ja) * 2009-09-04 2013-12-18 株式会社日立製作所 エレベーター装置
WO2011121764A1 (ja) * 2010-03-31 2011-10-06 三菱電機株式会社 エレベータのかごドア装置
CN103201207B (zh) * 2010-11-15 2015-06-17 株式会社日立制作所 轿厢门气密装置以及电梯设备
CN102654020A (zh) * 2012-02-24 2012-09-05 杨志勇 一种推拉窗密封结构
JP6242490B2 (ja) * 2014-07-11 2017-12-06 三菱電機株式会社 エレベータの出入口装置
JP6286333B2 (ja) * 2014-09-30 2018-02-28 株式会社日立製作所 乗りかごドア気密装置及びエレベーター装置
CN106395529B (zh) 2015-07-27 2020-01-31 奥的斯电梯公司 监测系统、具有监测系统的电梯门系统和方法
JP6502864B2 (ja) * 2016-01-06 2019-04-17 株式会社日立製作所 乗りかごドア気密装置及びエレベーター装置
JP6438903B2 (ja) * 2016-03-14 2018-12-19 株式会社日立製作所 乗りかごドア気密装置及びエレベーター
JP6578248B2 (ja) * 2016-06-15 2019-09-18 株式会社日立製作所 乗りかごドア気密装置及びエレベーター装置
CN108483201B (zh) * 2018-03-06 2020-05-15 刘莲莲 一种医用电梯的防护装置
JP7536394B2 (ja) 2020-06-16 2024-08-20 サノヤス・エンジニアリング株式会社 エレベーター用扉、及びエレベーター
US11459211B2 (en) * 2020-06-25 2022-10-04 Otis Elevator Company Narrow groove elevator doorsill

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
AT298756B (de) * 1967-10-16 1972-05-25 Ernst Pudenz Schiebefenster bzw. Schiebetür
CH489690A (de) * 1967-10-16 1970-04-30 Pudenz Ernst Schiebefenster oder Schiebetüre
US4058191A (en) * 1976-10-06 1977-11-15 Westinghouse Electric Corporation Elevator system including an elevator car having door operated sealing devices adjacent door opening
US4735293A (en) * 1986-12-01 1988-04-05 Westinghouse Electric Corp. Hatchway door for elevator system
CN2318204Y (zh) * 1997-06-17 1999-05-12 陈雪芳 升降机折叠式密闭门装置

Also Published As

Publication number Publication date
CN1697775A (zh) 2005-11-16
JP4416435B2 (ja) 2010-02-17
CN1697775B (zh) 2010-05-12
MY140794A (en) 2010-01-15
JP2004338851A (ja) 2004-12-02
TWI275560B (en) 2007-03-11
TW200427617A (en) 2004-12-16
EP1622823A1 (en) 2006-02-08
WO2004101421A1 (en) 2004-11-25

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