WO2001051332A1 - Weichenverschluss für weichenzungen - Google Patents
Weichenverschluss für weichenzungen Download PDFInfo
- Publication number
- WO2001051332A1 WO2001051332A1 PCT/EP2000/013318 EP0013318W WO0151332A1 WO 2001051332 A1 WO2001051332 A1 WO 2001051332A1 EP 0013318 W EP0013318 W EP 0013318W WO 0151332 A1 WO0151332 A1 WO 0151332A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tongue
- switch
- bearing roller
- slide rod
- angle lever
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
Definitions
- the invention relates to a switch lock according to the preamble of the claim.
- Switch closures of various types are already known in practice, such as hook closures, clamp closures, inner closures and latch closures.
- All switch locks have in common that they operate the switch tongues during the changeover process.
- the switch locks ensure that the switch tongues are held in their end positions, namely the adjacent switch tongue so that no wheel rim can enter between the stock rail and the adjacent switch tongue, and the remote switch tongue so that the distance between the stock rail and the remote one
- the switch tongue ensures unimpeded passage through the wheel rim.
- Further requirements and properties of switch locks usually consist in that the switch lock
- Longitudinal expansion of the switch tongue up to ⁇ 25 mm without impairing the secure lock can be used both for electrically controlled switches and for manual and recoil switches, can be driven at speeds of up to 40 km / h, even together with a non- retractable turnout drive can be used as a center lock for long turnout tongues in high-speed turnouts, - fits all common Vignol rail profiles, works even in dirty surroundings, with snow deposits and icing and can be installed between two sleepers or in a hollow sleeper.
- the latch lock consists of a slide rod, a connecting bracket, two locking latches, two tongue clamps and two locking pieces.
- the locking pawls are built into the tongue block, which are attached to the switch tongues.
- the locking pieces clamped to the stock rails serve as a support for the slide rod.
- This construction permits tongue migration in the event of a thermal change in length of ⁇ 25 mm.
- the tongue block takes over the lateral guidance of the slide rod.
- the locking pawl is mounted with an eccentric bolt, which enables the tongue play to be adjusted.
- the blows caused by high forces on the jack axis are absorbed in a built-in elastic bushing.
- the slide rod has two slide rod parts, which are electrically insulated in the middle, so that no short circuit is caused in a built-in track circuit.
- the drive rod usually attacks in the middle, but a side attack is also possible.
- the locking pawl indirectly connected to the tongue by means of a tongue block, extends under the rail foot and thus creates the mechanical.
- the locking catch snaps directly onto the locking piece and is firmly fixed in its position by the slide rod.
- the switch changes over due to the movement of the slide rod.
- the remote tongue begins to move first. After covering the unlocking path, the pawl is pulled down and thereby initiates the unlocking of the adjacent tongue. After complete unlocking, both tongues simultaneously follow the movement of the slide rod until the tongue which has previously been in place is put on. When the slide rod is pulled further, the pawl is moved into its locking position lung raised. The tongue, which is now removed, continues to move until the end of the changeover process and is held in this position.
- the switch When the switch is opened, a force is exerted on the tongue by the wheel rim. If the design of the point machine allows this, the slide rod is moved and the adjacent tongue is unlocked before it follows the movement of the slide rod. In this way, the switch can be driven up to 40 km / h without damage from the wrong side.
- a disadvantage of all known switch closures is that relatively high actuating forces are required to set them. Powering peaks can occur when positioning, which can even damage the switch lock.
- the known switch locks are often very susceptible to longitudinal movements of the switch.
- Another disadvantage is that the known switch locks are very maintenance-intensive and require a lot of maintenance. Since the individual parts of the switch lock which are movable relative to one another can be shifted towards one another, an increased and constant need for greasing is required in order to make the shiftability possible even with lower actuating forces.
- the known switch locks offer only minimal installation or adjustment options in order to enable adaptation to specific installation situations.
- the object of the present invention is now to provide a switch closure of the type mentioned, in which only small and otherwise essentially constant actuating forces are required and in which the care and greasing effort is minimized.
- the above-mentioned object is achieved according to the invention in a switch lock of the type mentioned at the outset with the characterizing features of claim 1.
- the configuration according to the invention differs considerably from the switch closures known from practice.
- the use of at least one bearing roller and the direct or indirect rolling of the slide rod on the bearing roller leads to the fact that at least essentially only rolling friction between the relatively parts of the switch lock occur. In contrast to the prior art, no sliding friction occurs.
- the actuating forces required for setting are not only relatively low but also comparatively constant, that is to say the force peaks occurring in the prior art cannot occur here.
- the maintenance and care effort is very low. Constant, large-scale greasing is not necessary.
- the switch lock is very easy to move and, apart from the articulation points of the angle lever and the bearing of the bearing roller, has no sliding components.
- the angle lever is designed and articulated in such a way that when the slide rod is adjusted, it swivels with its free end around the articulation point on the block during the locking or in the locked state of the switch tongue. It is a particular advantage in this context that the angle lever has at its free end a downward first tread that rolls on the bearing roller during the locking. It is understood that the unlocking takes place in the same way as the locking, only in the opposite direction. Accordingly, the following statements relating to the locking also relate to the unlocking process, even if this is not specified in detail.
- the angle lever not only locks the switch tongue, it also controls the actuating movement.
- the angle lever runs on the bearing roller with a second running surface provided on the angle lever when the slide rod is adjusted during the adjustment of the switch tongue.
- the angle lever thus has two running surfaces that control the entire movement sequence for locking and setting the switch tongue.
- the first and second running surfaces merge directly into one another. It is provided that the two treads are aligned with each other in the region of the transition by approximately 90 °.
- the second tread which controls the actuating movement, has an inclination. Starting from the transition, the second running surface is inclined in such a way that the switch tongue is raised during the adjustment. This ensures that the front sliding chairs or similar pads for the switch tongue can no longer be lubricated.
- the bearing roller strikes in the leg region of the angle lever when the open end position of the switch tongue is reached. This is particularly important when the turnout lock is operated manually; In the case of motorized drives, the actuating stroke is usually determined by the drive. Still is provided that a nose is provided at the free end of the angle lever in the region of the end of the first tread, which nose serves as a stop when the maximum locking position is reached.
- pin joints with self-lubricating bushings are provided to link the angle lever to the block and / or the slide rod.
- the bearing roller can also be mounted in a corresponding manner on the closure part via a self-lubricating bushing.
- the self-lubricating bushes make any human effort in connection with the lubrication superfluous.
- the width of the bearing roller is preferably several times greater than the thickness of the angle lever.
- the bearing roller is assigned an adjusting device which enables the height of the bearing roller and / or the distance from the stock rail.
- the switch lock according to the invention can be easily adapted to a wide variety of installation situations by means of the adjusting device.
- the adjustment device has a storage fork on which the storage roller is mounted. A mechanically safe and easy-to-implement type of adjustment is ensured by means of spacer plates that can be inserted or removed in the area of the storage fork, if necessary.
- a turnout of at least 150 mm can be achieved with an adjustment travel of the slide rod of at least 200 mm with the switch lock according to the invention using the angle lever.
- the slide rod can easily be designed such that there is electrical insulation between the stock rails. Exemplary embodiments of the present invention are described below with reference to the drawing. It shows
- Fig. 1 is a view of a switch closure according to the invention in
- FIG. 2 shows a plan view of the switch lock from FIG. 1,
- FIG. 3 is an enlarged view of the left part of the switch lock from FIG. 1,
- FIG. 4 is an enlarged view of the right part of the switch closure according to the invention from FIG. 1,
- Fig. 5 is an enlarged view of the left part of the switch lock from Fig. 2 and
- FIG. 6 shows an enlarged illustration of the right part of the switch closure from FIG. 2.
- the switch lock 1 actuates a first and a second switch tongue 2, 3 between a first and a second stock rail 4, 5 during the changeover process.
- the switch lock 1 has a first and a second locking piece 6, 7, each on the first and second stock rails 4, 5 is attached.
- the switch lock 1 has a first and a second block 8, 9, which are used for fastening to the first and the second switch tongue 2, 3, respectively.
- the switch lock 1 is provided with a slide rod 10.
- the slide rod 10 is formed in several parts and has a central part 11 and two outer slide rod parts 12, 13. Both on the middle part 11 and on the outer slide rod parts 12, 13, engagement sections 14, 15, 16 are provided for connection to a drive, not shown. As is common with turnout closures, the travel of the slide rod 10 is also greater in the turnout lock 1 according to the invention than the tongue stop Z of the turnout tongues 2, 3.
- the first switch tongue 2 shown in FIGS. 1 and 2 in the left part is in its open end position, while the second switch tongue 3 shown in FIGS. 1 and 2 in the right part is in its closed or locked end position, i.e. is locked on the second stock rail 5.
- each of the closure pieces 6, 7 is provided on each of the closure pieces 6, 7 and that the slide rod 10 is movable relative to the closure pieces 6, 7 via the respective bearing rollers 17, 18 for adjusting the switch tongues 2, 3.
- the slide rod 10 does not roll directly or directly onto the bearing rollers 17, 18, but indirectly or indirectly.
- an angle lever 19, 20 is provided on each of the closure pieces 6, 7, which is used to lock and adjust the respective switch tongue 2, 3 and cooperates with the respective bearing roller 17, 18.
- each of the angle levers 19, 20 rolls on or on the respective bearing roller 17, 18.
- each of the angle levers 19, 20 is articulated both on the slide rod 10 and on the respective block 8, 9.
- first angle lever 19 is articulated on the outer slide rod part 12 and on the first block 8, namely with its angle leg 21.
- the second angle lever 20 is articulated on the second block 9 and on the outer slide rod part 13, also with the angle leg 21. From the angle leg 21 an angled leg 22 is angled, the two angular levers 19, 20 being arranged relative to one another in such a way that the free angular legs 22 point towards one another.
- the articulation of the two angle levers 19, 20 is in each case such that the angle leg 21 is articulated on the slide rod 10 at its outer end.
- the other articulation point of the respective angle lever is located in the bend of the angle lever, that is in the apex region or at the transition from one angle leg 21 to the other angle leg 22.
- the angle leg 21 is shorter than the angle leg 22.
- the articulation and design of the two angle levers 19, 20 is such that when the slide rod 10 is adjusted, the angle levers 19, 20 have their respective free ends, ie the free angle legs 22, during the locking of the respective switch tongue around the articulation point on the respective one Swivel block 8, 9.
- each of the angle levers 19, 20 at the end of the free angle leg 22 in the present case has a downwardly directed first running surface 23 which rolls on the respective bearing roller 17, 18 during the locking
- the free angle leg 22 has on its underside a second running surface 24 which rolls on the respective bearing roller 17, 18 when the slide rod 10 is adjusted while the respective switch tongue 2, 3 is being adjusted.
- the two running surfaces 23, 24 are therefore control surfaces via which the movements are controlled during the actuating and locking processes.
- the first and the second tread 23, 24 merge directly into one another, wherein they are oriented approximately at right angles to one another in the region of the transition 25. It is not shown that, starting from the transition 25, the second running surface 24 can be inclined in such a way that the respective switch tongue 2, 3 is raised during the adjustment. 3, the respective bearing roller strikes when the switch tongue 2, 3 reaches the open end position on the angle leg 21 of the angle lever 19, 20, so that the angle leg 21 serves as a stop to limit the control path during the adjustment.
- a nose 26 is provided in the locking position in the direction of the respective bearing roller 17, 18, which serves as a stop when the maximum locking position is reached.
- pin joints 27, 28 are provided with self-lubricating bushings.
- the two bearing rollers 17, 18 are also mounted on self-lubricating bushings on the closure parts 6, 7.
- the width B of the respective bearing roller 17, 18 is several times greater than the thickness d of the respective angle lever 19, 20, so that a relative movement of the respective switch tongue to the respective stock rail and thus of the respective angle lever 19 , 20 along the width of the respective bearing roller 17, 18 is easily possible.
- each of the bearing rollers 17, 18 is assigned an adjusting device 29 for adjusting the respective bearing roller 17, 18 in height and / or at a distance from the respective stock rail 4, 5.
- the adjusting device 29 has a bearing fork 31 connected to the respective closure piece 6, 7 via screw connections 30, on which the respective bearing roller 17, 18 is mounted.
- Spacer plates 32 for distance adjustment and spacer plates 33 for height adjustment can be arranged between the respective closure piece 6, 7 and the bearing fork 31.
- each of the closure pieces 6, 7 has a projection 34 with an on groove for the stock rail base.
- Corresponding bracing means 35 for bracing on the respective stock rail 4, 5 are provided on the opposite side. Since the slide rod 10 is made of several parts, each closure piece 6, 7 can be assembled individually.
- the respective blocks 8, 9 are fastened to the switch tongues 2, 3 and screwed together using appropriate screwing means 36. Then the slide rod 10 is assembled if necessary. Now the fine adjustment can be made via the adjusting device 29, i. H. take place via the spacer plates 32. Finally, the connection is made via one or more of the engagement sections 14, 15, 16 to a drive.
- the angle lever 21 pivots clockwise and the pin joint 27 moves also to the left.
- the free angle leg 22 pivots upward about the pin joint 28 along the first running surface 23 until the transition 25 is reached.
- the switch tongue 3 has not yet moved away from the stock rail 5, while the switch tongue 2 has already moved in the direction of the stock rail 4.
- the further movement of the slide rod 10 to the left leads to the second running surface 24 rolling on the bearing roller 18.
- the tongue rail 3 can be raised when the second running surface 24 is inclined accordingly. The movement along the second running surface 24 takes place until the bearing roller 18 strikes the inside of the angle leg 21. Then the open end position of the switch tongue 3 is reached, as is shown for the switch tongue 3 in FIG. 3.
- the switch tongue 3 is reset in the opposite direction, with an at least substantially horizontal movement first taking place along the second running surface 24 until the bearing roller 18 merges with the first running surface 23. In this state, the switch tongue 3 rests on the stock rail 5. The locking then takes place, with the bearing roller 18 rolling on the first running surface 23 until the nose 26 rests against the bearing roller 18 as a stop. A further movement is not possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Push-Button Switches (AREA)
- Lock And Its Accessories (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL349642A PL197909B1 (pl) | 2000-01-11 | 2000-12-29 | Zamek ryglujący iglicę zwrotnicy kolejowej |
AU28441/01A AU764345B2 (en) | 2000-01-11 | 2000-12-29 | Rail switch lock for points tongues |
DE50000621T DE50000621D1 (de) | 2000-01-11 | 2000-12-29 | Weichenverschluss für weichenzungen |
EP00993777A EP1159183B1 (de) | 2000-01-11 | 2000-12-29 | Weichenverschluss für weichenzungen |
AT00993777T ATE225727T1 (de) | 2000-01-11 | 2000-12-29 | Weichenverschluss für weichenzungen |
US09/936,490 US6616105B2 (en) | 2000-01-11 | 2000-12-29 | Rail switch lock for points tongues |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10000804.6 | 2000-01-11 | ||
DE10000804A DE10000804A1 (de) | 2000-01-11 | 2000-01-11 | Weichenverschluß für Weichenzungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001051332A1 true WO2001051332A1 (de) | 2001-07-19 |
Family
ID=7627163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/013318 WO2001051332A1 (de) | 2000-01-11 | 2000-12-29 | Weichenverschluss für weichenzungen |
Country Status (8)
Country | Link |
---|---|
US (1) | US6616105B2 (de) |
EP (1) | EP1159183B1 (de) |
AT (1) | ATE225727T1 (de) |
AU (1) | AU764345B2 (de) |
CZ (1) | CZ291421B6 (de) |
DE (2) | DE10000804A1 (de) |
PL (1) | PL197909B1 (de) |
WO (1) | WO2001051332A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011147961A1 (de) * | 2010-05-28 | 2011-12-01 | Hanning & Kahl Gmbh & Co Kg | Verschluss für weichenstellvorrichtungen |
WO2017096703A1 (zh) * | 2015-12-07 | 2017-06-15 | 西安全路通号器材研究有限公司 | 一种密贴检查器 |
CN107215354A (zh) * | 2016-03-22 | 2017-09-29 | 张振坤 | 一种锁闭杆凸台间距可调式外锁闭杆 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1488979A1 (de) * | 2003-06-17 | 2004-12-22 | Siemens Schweiz AG | Verschlussvorrichtung für Weichenzungen mit Profilanpassung |
AT502042B1 (de) * | 2005-05-18 | 2007-01-15 | Vae Gmbh | Vorrichtung zur endlagenprüfung von beweglichen teilen einer schienenweiche |
AT507216B1 (de) * | 2008-09-11 | 2010-03-15 | Vae Eisenbahnsysteme Gmbh | Vorrichtung zum festlegen einer weichenstelleinrichtung an backenschienen einer schienenweiche |
JP5693294B2 (ja) * | 2011-02-28 | 2015-04-01 | 三菱重工業株式会社 | 分岐装置及び中央案内式の軌道系交通システム |
US8684317B2 (en) * | 2011-09-30 | 2014-04-01 | Jim Arnold | Railroad switch point roller mechanism |
US8430364B1 (en) * | 2011-11-29 | 2013-04-30 | Eco-Production Vresova Spol. S R O | Roller assembly for a railway switch |
US9238474B1 (en) | 2013-06-20 | 2016-01-19 | Norfolk Southern Corporation | Run-through switch rods |
GEP201706726B (en) * | 2016-05-24 | 2017-08-25 | Point switch | |
RU184722U1 (ru) * | 2018-07-13 | 2018-11-06 | Общество с ограниченной ответственностью "Информационные технологии" (ООО "ИнфоТех") | Ось подвижного соединения стрелочной гарнитуры стрелочного электропривода |
EP3835168A1 (de) * | 2019-12-11 | 2021-06-16 | ALSTOM Transport Technologies | Eisenbahnweichenmaschine mit einstellbarem hub |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR550064A (de) * | 1923-02-26 | |||
WO1995003199A1 (de) * | 1993-07-26 | 1995-02-02 | Bwg Butzbacher Weichenbau Gmbh | Vorrichtung zum verriegeln einer weichenzunge |
DE4324883A1 (de) * | 1993-07-26 | 1995-02-02 | Butzbacher Weichenbau Gmbh | Vorrichtung zum Verriegeln einer Weichenzunge |
EP0723901A2 (de) * | 1995-01-24 | 1996-07-31 | CARL DAN. PEDDINGHAUS GMBH & CO. KG | Verschlussvorrichtung für Weichenzungen |
WO2000002759A1 (de) * | 1998-07-09 | 2000-01-20 | Siemens Schweiz Ag | Verschlussvorrichtung |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE312449C (de) * | ||||
DE367285C (de) * | 1923-01-19 | Arminius Vertriebsgesellschaft | Weichenhakenschloss | |
DE104695C (de) * | ||||
DE4014249A1 (de) * | 1990-05-04 | 1991-11-07 | Butzbacher Weichenbau Gmbh | Vorrichtung zum verriegeln einer weichenzunge |
DE4014248A1 (de) * | 1990-05-04 | 1991-11-07 | Butzbacher Weichenbau Gmbh | Vorrichtung zum verriegeln einer weichenzunge mit einer backenschiene |
CZ99193A3 (en) * | 1993-05-25 | 1995-03-15 | Pavel Ing Vrsecky | Points slip |
AT400239B (de) * | 1993-09-16 | 1995-11-27 | Alcatel Austria Ag | Auffahrbarer weichenantrieb |
DE9317723U1 (de) * | 1993-11-19 | 1994-01-20 | Enzesfeld-Caro Metallwerke Ag, Enzesfeld | Weiche für Gleise des schienengebundenen Verkehrs |
DE19615196A1 (de) * | 1996-04-17 | 1997-10-23 | Peddinghaus Carl Dan Gmbh | Weichenendverschluß |
WO2000002799A1 (de) * | 1998-07-10 | 2000-01-20 | K-Tron Technologies, Inc. | Vorrichtung zum erreichen eines kontinuierlichen materialflusses bei schüttgütern |
-
2000
- 2000-01-11 DE DE10000804A patent/DE10000804A1/de not_active Ceased
- 2000-12-29 AU AU28441/01A patent/AU764345B2/en not_active Ceased
- 2000-12-29 US US09/936,490 patent/US6616105B2/en not_active Expired - Fee Related
- 2000-12-29 AT AT00993777T patent/ATE225727T1/de active
- 2000-12-29 CZ CZ20013191A patent/CZ291421B6/cs not_active IP Right Cessation
- 2000-12-29 DE DE50000621T patent/DE50000621D1/de not_active Expired - Lifetime
- 2000-12-29 WO PCT/EP2000/013318 patent/WO2001051332A1/de active IP Right Grant
- 2000-12-29 EP EP00993777A patent/EP1159183B1/de not_active Expired - Lifetime
- 2000-12-29 PL PL349642A patent/PL197909B1/pl not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR550064A (de) * | 1923-02-26 | |||
WO1995003199A1 (de) * | 1993-07-26 | 1995-02-02 | Bwg Butzbacher Weichenbau Gmbh | Vorrichtung zum verriegeln einer weichenzunge |
DE4324883A1 (de) * | 1993-07-26 | 1995-02-02 | Butzbacher Weichenbau Gmbh | Vorrichtung zum Verriegeln einer Weichenzunge |
EP0723901A2 (de) * | 1995-01-24 | 1996-07-31 | CARL DAN. PEDDINGHAUS GMBH & CO. KG | Verschlussvorrichtung für Weichenzungen |
WO2000002759A1 (de) * | 1998-07-09 | 2000-01-20 | Siemens Schweiz Ag | Verschlussvorrichtung |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011147961A1 (de) * | 2010-05-28 | 2011-12-01 | Hanning & Kahl Gmbh & Co Kg | Verschluss für weichenstellvorrichtungen |
AU2011257172B2 (en) * | 2010-05-28 | 2014-06-19 | Hanning & Kahl Gmbh & Co Kg | Closure for railway switch actuating devices |
WO2017096703A1 (zh) * | 2015-12-07 | 2017-06-15 | 西安全路通号器材研究有限公司 | 一种密贴检查器 |
RU180624U1 (ru) * | 2015-12-07 | 2018-06-19 | Сиань Нешнл Рейлвей Еквипмент Ресёрч Оф Сигнал Энд Коммуникейшн Ко., Лтд | Детектор прижатия |
CN107215354A (zh) * | 2016-03-22 | 2017-09-29 | 张振坤 | 一种锁闭杆凸台间距可调式外锁闭杆 |
Also Published As
Publication number | Publication date |
---|---|
PL197909B1 (pl) | 2008-05-30 |
ATE225727T1 (de) | 2002-10-15 |
CZ20013191A3 (cs) | 2002-01-16 |
US6616105B2 (en) | 2003-09-09 |
EP1159183A1 (de) | 2001-12-05 |
DE10000804A1 (de) | 2001-07-26 |
DE50000621D1 (de) | 2002-11-14 |
AU764345B2 (en) | 2003-08-14 |
AU2844101A (en) | 2001-07-24 |
EP1159183B1 (de) | 2002-10-09 |
CZ291421B6 (cs) | 2003-03-12 |
US20020157561A1 (en) | 2002-10-31 |
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