EP0455153A2 - Dispositif pour le verrouillage d'une lame d'aiguillage avec contre-rails - Google Patents

Dispositif pour le verrouillage d'une lame d'aiguillage avec contre-rails Download PDF

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Publication number
EP0455153A2
EP0455153A2 EP91106768A EP91106768A EP0455153A2 EP 0455153 A2 EP0455153 A2 EP 0455153A2 EP 91106768 A EP91106768 A EP 91106768A EP 91106768 A EP91106768 A EP 91106768A EP 0455153 A2 EP0455153 A2 EP 0455153A2
Authority
EP
European Patent Office
Prior art keywords
support
switch tongue
closure
section
sliding element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91106768A
Other languages
German (de)
English (en)
Other versions
EP0455153A3 (en
EP0455153B1 (fr
Inventor
Alfred Kais
Erich Dipl.-Ing. Nuding (Fh)
Sebastian Benenowski
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.)
Butzbacher Weichenbau GmbH
Voestalpine Turnout Technology Germany GmbH
Original Assignee
Voestalpine BWG GmbH
Butzbacher Weichenbau GmbH
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 Voestalpine BWG GmbH, Butzbacher Weichenbau GmbH filed Critical Voestalpine BWG GmbH
Publication of EP0455153A2 publication Critical patent/EP0455153A2/fr
Publication of EP0455153A3 publication Critical patent/EP0455153A3/de
Application granted granted Critical
Publication of EP0455153B1 publication Critical patent/EP0455153B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 device for locking a switch tongue, which can be supported with its rail foot on a base, with a stock rail comprising a closure piece starting from the stock rail, which can be pushed through by a sliding element such as a push rod and an interacting closure element such as a closure clip, which in turn has a Axis is articulated to the switch tongue.
  • the pivot axis of the closure clip lies in the plane of the rail foot of the stock rail, so that in the locked position a horizontally extending force effect acts on the switch tongue essentially.
  • a horizontally extending force effect acts on the switch tongue essentially.
  • the type of clamp closure and the introduction of force prevent the switch tongue from being held down.
  • the switch tongue slides on a slide chair Document.
  • the clip is also slidably supported on the sliding element. As a result, constant maintenance is required to lubricate the parts sliding on one another, in order to ensure the functionality of the switch lock.
  • clip tip closures are the references DE-C 120412, DE-B 1 263 063, DE-A 26 35 231, DE-A 25 42 202, DE-A 24 50 802, DE-A 23 52 017, CH-A 456 667, GB-C 233 110, US-A 4 842 225, "Morgenschweis, Otto, switches for rapid rail transport, in: Eisenbahningenieur 28, H.3, 1977, pp. 101-107" and the company's prospectus " INTEGRA, CH-8304 Wallisellen, order no. HTS 3006/179 ".
  • the object of the present invention is essentially to develop a device of the type mentioned at the outset in such a way that it is largely maintenance-free.
  • the aim is to reduce the amounts of lubricants otherwise required to a considerable extent. Also supposed to be sure that the switch tongue is not rotated when locked, so that there is no gaping between the stock rail and switch tongue. Finally, it should be ensured that the switch tongue is held down in the locked position.
  • the rail foot of the switch tongue is held down in the locked and open position on the base and is spaced between these positions from the base.
  • a starting element extending from the closure piece extends parallel to the sliding element and the closure element is displaceably supported with respect to the support and the sliding element with respect to the closure element, with a supporting element such as a rolling element with sections of the support element first being held down or spaced apart from the rail base Pad and the sliding element interacts.
  • the sliding element and the support each have an approximately horizontally running section and approximately in a common plane, outside of this section the course of the sliding element and support is changed such that the chamber-like receptacles for at least one rolling element or the like. form the closure element. This is done by moving the sliding element along the support, so that consequently the sliding element takes over the locking, unlocking and lifting of the switch tongue as well as the conversion of this and the subsequent lowering.
  • a support element such as a rolling element
  • a support element is on the same side of the switch tongue as the axis of the closure element runs, fixed in a first chamber-like receptacle, which has a step for holding down the support element, which comprises a rail-side preferably horizontal first and a preferably vertical second section, the first section being formed by the sliding element and the second section being formed by the support .
  • a support element such as a rolling element
  • a second chamber-like receptacle which has a step for holding down the support element, which comprises a rail-side preferably horizontally running first section and a preferably vertically running second section, the first section is formed by the sliding element and the second section by the support.
  • connection between the closure element that is to say the closure clip and the switch tongue, preferably takes place via a closure element receptacle, which in turn has a shaft extending in the longitudinal direction of the switch tongue, which is surrounded in sections and thus length-displaceably by a section of the closure element.
  • a rubber-elastic bushing is preferably arranged between the section of the closure element and the shaft, in order to achieve a cushioning of the closure clip to the desired extent.
  • the elements connected to the stock rail or switch tongue should be made as light as possible to prevent high acceleration forces.
  • closure piece extends from a support extending parallel to the sliding element, that the closure element is supported on the support and the sliding element on the closure element and that at least when the switch tongue is in the locked position, the closure element between the support and the sliding element is fixed.
  • the moving parts should preferably roll on one another. But sliding would also be possible.
  • the support serves as a kind of fixed roadway, which is firmly attached to the stock rail via the closure piece.
  • Support and sliding element which preferably consists of two sections extending along the side surfaces of the support, but can also be formed in one piece and can only run along one side surface of the support, have sections running in different planes, which depend on the position of the sliding element
  • closure piece preferably forms the upper limit for the sliding element
  • the support is adjustably fastened in the locking piece.
  • the support can be spaced through by a bolt element extending from the closure piece, an eccentric bushing being arranged between the bolt element and the support. This results in an eccentric connection, through which length adjustment is possible. Changes in length that have taken place between the supports and sliding elements assigned to the respective stock rails and switch tongues of a track can be compensated for by the fact that a tab connection or the like provided with elongated holes between the individual elements. is made, which itself preferably consists of insulating material.
  • the closure element such as the closure clip preferably has at least two spaced-apart rolling elements or elements having the same effect, which run on both sides of the axis of rotation of the closure element, each with both Interaction as well as interact with the sliding element parts extending laterally to this.
  • the rolling elements can be arranged symmetrically or asymmetrically with respect to the axis of rotation, the latter being advantageous in order to find favorable lever arms when the locking element is pivoted, in particular from the locked position into the open position.
  • the axis about which the closure element is pivotable runs above the rail foot of the switch tongue.
  • the closure element can be fixed in a support area running beneath the stock rail foot.
  • a resultant force causing a hold-down and preventing rotation runs between the axis and the support area, the vertical component of which cuts the rail foot of the switch tongue or in its immediate vicinity.
  • the teaching according to the invention ensures that the vertical force component of the resultant forces prevents the switch tongue from tipping over, as a result of which, as in the prior art, there is a gap between the stock rail and the switch tongue.
  • the force resultant should cut the transition area between the rail foot and the web of the switch tongue, which ensures that the components of the force resultant cut the switch tongue in their rail foot area on the one hand and in their rail head area on the other - namely the contact surface to the stock rail - in such a way that the rail foot opens up on the one hand the sliding chair and on the other hand the rail head are pressed against the stock rail.
  • the component profile of the force vector proposed according to the invention is achieved in particular if the distance between the axis and the switch tongue is kept as small as possible.
  • the distance between the axis of rotation and the facing surface of the web of the switch tongue is approximately equal to 0.94 times the height of the switch tongue in this area, the axis running approximately 0.56 times the height of the switch tongue above the sliding chair.
  • the distance can be increased by up to 50 mm or reduced by up to 20 mm.
  • the distance to the sliding chair can vary by ⁇ 20 mm.
  • the measures according to the invention ensure that the switch tongue in the locked position cannot be tilted, that is to say can be rotated, even when a high force is applied, and at the same time a secure hold down on the base, that is to say the sliding chair, is ensured without additional aids.
  • switches in which the same elements are provided with the same reference numerals, sections of a switch are shown in which the switch tongues (10), (12) are to be locked or unlocked with associated stock rails (14), (16).
  • a locked switch tongue is shown in the right part of FIG. 1 and in FIGS. 4 and 10 and an open switch tongue in the left part of FIG. 1 and in FIGS. 3 and 5.
  • the closure piece (20) comprises two vertically extending legs or cheeks (22) and (24) which are penetrated at the bottom by a shaft or a bolt (26) so as to fix the legs (22), (24) to one another.
  • a free space (28) is formed between the legs, in which a support (30) is fixed in position and a locking clip (32) is displaceable and two slide parts (34) and (36) extend along the sides of the support (30), which together form a push rod or a slide (38).
  • the bolt or the shaft (26) passes through the support (30) at a distance.
  • An eccentric bushing (39) is arranged between the bore of the support (30) and the bolt or the shaft (26), so that the support can be displaced depending on the position of the eccentric bushing (39).
  • the upper horizontal surface of the support (30) provided with the reference number (40) in FIG. 6 now serves as a running surface for the surface (40) opposite Rolling elements such as bearings (42) supported locking clip (32).
  • the rolling elements or sections of these or bearing elements (42) extend laterally beyond the driving surface (40) so as to give the sliding element parts (34) and (36) the possibility of rolling support.
  • the sliding element parts (34) and (36) are also supported on the top in a rolling manner on a horizontally running rolling element or bearing (44). This means that all mutually displaceable elements, i.e. sliding element (38) with respect to the locking piece (20), sliding element (38) with respect to the locking clip (32) and locking clip (32) with respect to the support (30), ie the driving surface (40) rolling are supported.
  • the bearing (44) can start from an eccentrically mounted shaft in order to adjust the height of the sliding element (38).
  • the locking clip (32) is connected to the rail foot (48) of the switch tongue (10) via a locking clip receptacle (46).
  • the locking element receptacle (46) has a shaft (50) running in the longitudinal direction of the switch tongue, by means of which the pivot axis (52) for the locking clip (32) is predetermined.
  • the shaft (50) is held by legs or cheeks (54) and (56), which of the with Go out rail part (48) connected part of the closure element receptacle (46).
  • the length of the section (58) of the locking clip (32) surrounding the shaft (50) is - as shown in FIG. 7 - shorter than the free length of the shaft (50) itself. This makes it possible for the locking clip ( 32) can move along the shaft (50).
  • a strong, rubber-elastic bushing (60) is arranged between the section (58) and the shaft (50) in order to cushion the locking clip (32) to the switch tongue (10) to the desired extent.
  • the locking clip (62) associated with the switch tongue (12) and their connection have the same structure as the locking clip (32), so that there is no need to go into detail.
  • the closure clip (32) consists of a section (58) having an approximately vertical first section (64) which merges into second and third sections (66) and (68) of different lengths, which essentially run horizontally and which have at their ends the support elements interacting with the support (30) and the sliding element (36) in the form of rolling elements (42) and (70).
  • the rolling elements (42) and (70) or corresponding elements having the same effect are arranged at the ends of the legs (66) and (68), this is not a mandatory feature. Rather, the rollers can also be attached in other areas of the legs. It is also possible to use only one rolling element (42) or (70).
  • the sliding element (38) consists of the parts (34) and (36) extending laterally to the support (30).
  • the parts (34) and (36) are connected via bolts or elements having the same effect, with spacers (72) being provided for specifying the distance between the parts (34) and (36).
  • the sliding element (38) is also connected to a drive (not shown in more detail) in order to make it possible to move it to the support (30) and thus to move the locking clip (32) and to lock or unlock the switch tongue (10).
  • each switch tongue (10) and (12) is assigned a separate, but identically constructed sliding element (38) or support (30) which are connected to one another by tab connections (74).
  • a change in length which can be done by adjusting the support (30) by means of the eccentric bushing (38), can take place through elongated holes provided in the area of the tab connection (74).
  • the tab connections (74) can also serve to isolate the halves of the support and sliding elements.
  • the support (30) and the sliding element (38) thus its parts (34) and (36) have a horizontal section running approximately in the same plane, which with respect to the sliding element Reference number (76) and with respect to the support (30) with the reference number (78) is designated (Fig. 4).
  • Fig. 4 the switch tongue (10) is shown in the locked position.
  • the rolling element (42) located on the side of the switch tongue (10) with respect to the axis of rotation of the locking clip (32) is located in a chamber (80), it being decisive that the rolling element (42) at a step (88) is fixed, so the switch tongue (10) is held down.
  • the step (88) is composed of an upper horizontal section (90) and a vertical section (92).
  • the section (90) in turn is a front section of the horizontal section (76) of the sliding element (38) and the vertical section (92) is a section of the support (30).
  • the opposite rolling element (70) is in turn fixed in the chamber (82), which is formed on the upper side by a section of the sliding element and on the lower side by both a section of the support (30) and the sliding element (38).
  • the sliding element (38) in the exemplary embodiment in FIG. 4 is shifted to the right.
  • the rolling element (42) is then gripped by a ramp-shaped section (94) of the sliding element (38), as a result of which the locking clip (32) is lifted, ie rotated, about the axis (52).
  • the switch tongue (10) is raised.
  • the rolling element (42) is pushed further to the right, the rolling element (42) reaches the horizontally running surface (96) of the chamber (80) and the rolling element (70) comes into the area of the chamber provided with the reference symbol (98) (82).
  • the locking clip (32) and thus the switch tongue (10) are now taken along.
  • the rolling element (70) (FIG. 3) lies in the region of an inclined surface (100) of the support (30). In this position, the switch tongue (10) is lowered again.
  • FIG. 5 differs from that of FIG. 3 in that the switch tongue (10) is held down even in the open switch position. In this position, the rolling element (70) lies against a step which corresponds in effect to that provided with the reference symbol (88) in FIG. 4.
  • This step (104) causing the switch tongue (12) to be held down in the open position is on the rail side by a front section of the horizontal surface (76) of the sliding element (38) and in the vertical region by a section of the support (30) educated.
  • the open position of the switch tongue (12) is the raised position with the reference symbol (11) with the reference symbol (15) and the locked position with the reference symbol (13).
  • the force vector (112) runs between the axis (52) about which the locking clip (32) can be pivoted, and the support area (118) of the locking chamber (32) in the chamber (80), so where the rolling element (42) on the step (88) is fixed.
  • the size and direction of the vector (112) between the axis (52) and the support region (118) are selected so that the vertical force component (114) intersects or at least runs in the vicinity of the base (120) of the switch tongue (10) this ensures that the switch tongue (10) cannot tip regardless of the size of the force introduced via the locking clip (32).
  • the further component (116) which adds up with the vertical component (114) to the resultant force or the force vector (112), intersects the contact surfaces of the switch tongue (10) and the stock rail (14) perpendicularly.
  • the axis (52) must be brought close to the switch tongue (10).
  • the distance of the axis (52) from the facing surface of the web of the switch tongue (10) is preferably 0.94 times the height of the switch tongue (10).
  • the axis (52) is furthermore at a distance above the surface of the base (17), which preferably corresponds to 0.56 times the height of the switch tongue.
  • the horizontal distance to the web can be increased by up to 50 mm or reduced by up to 20 mm.
  • the distance to the sliding chair can vary by ⁇ 20 mm.
  • the free surface of the support (106) is inclined to the horizontal.
  • this is done by a roof-shaped geometry (108).
  • the underside (110) of the rail foot (120) of the switch tongue (10) or (12) is correspondingly supplementary, or at least partially supplementary, and thus has an at least partially V-shaped geometry.
  • This geometry can also be achieved by an intermediate piece, which must run at least in regions on the underside of the switch tongue.
  • Other shapes are also possible, such as a surface that is oblique to the horizontal.
  • the roof-shaped geometry has the additional advantage of automatically centering the switch tongue on the support (106).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Chutes (AREA)
  • Push-Button Switches (AREA)
  • Vending Machines For Individual Products (AREA)
  • Braking Arrangements (AREA)
  • Toys (AREA)
  • Railway Tracks (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP91106768A 1990-05-04 1991-04-26 Dispositif pour le verrouillage d'une lame d'aiguillage avec contre-rails Expired - Lifetime EP0455153B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4014248A DE4014248A1 (de) 1990-05-04 1990-05-04 Vorrichtung zum verriegeln einer weichenzunge mit einer backenschiene
DE4014248 1990-05-04

Publications (3)

Publication Number Publication Date
EP0455153A2 true EP0455153A2 (fr) 1991-11-06
EP0455153A3 EP0455153A3 (en) 1993-04-21
EP0455153B1 EP0455153B1 (fr) 1995-02-01

Family

ID=6405661

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106768A Expired - Lifetime EP0455153B1 (fr) 1990-05-04 1991-04-26 Dispositif pour le verrouillage d'une lame d'aiguillage avec contre-rails

Country Status (8)

Country Link
US (1) US5195703A (fr)
EP (1) EP0455153B1 (fr)
AT (1) ATE117950T1 (fr)
CA (1) CA2041809A1 (fr)
DE (2) DE4014248A1 (fr)
DK (1) DK0455153T3 (fr)
ES (1) ES2068422T3 (fr)
GR (1) GR3015483T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995003199A1 (fr) * 1993-07-26 1995-02-02 Bwg Butzbacher Weichenbau Gmbh Dispositif de verrouillage de lames d'aiguilles
WO1995008672A1 (fr) * 1993-09-24 1995-03-30 Bwg Butzbacher Weichenbau Gmbh Appareillage de positionnement
EP0739804A3 (fr) * 1995-04-25 1997-07-02 Wbg Weichenwerk Brandenburg Méthode et dispositif de verrouillage d'une lame d'aiguilles
EP0818376A1 (fr) * 1996-07-10 1998-01-14 TECNOLOGIE MECCANICHE s.r.l. Dispositif de verrouillage pour aiguilles
EP0885795A1 (fr) * 1997-06-20 1998-12-23 Siemens Schweiz AG Dispositif de verrouillage
EP1762454A1 (fr) 2005-09-13 2007-03-14 Schwihag Gesellschaft für Eisenbahnoberbau mbH Dispositif dans un système de manoeuvre d'aiguilles pour le verrouillage d'une lame d'aiguillage

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AT136U1 (de) * 1991-12-19 1995-03-27 Alcatel Austria Ag Vorrichtung zur endlagenpruefung von weichenzungen
DE9211520U1 (de) * 1992-05-08 1993-09-09 Bwg Butzbacher Weichenbau Gmbh, 35510 Butzbach Dehnungsstoß für ein Gleisteil
DE4214605A1 (de) * 1992-05-08 1993-11-11 Butzbacher Weichenbau Gmbh Dehnungsstoß für ein Gleisteil
ES2098720T3 (es) * 1992-10-16 1997-05-01 Vae Ag Dispositivo para simplificar el movimiento de desplazamiento de vias moviles o partes de vias.
DE4315200C2 (de) * 1993-05-07 2003-04-30 Schwihag Gmbh Querschwelle mit Verstellvorrichtung für Weichenzungen
DE9317865U1 (de) * 1993-11-23 1994-02-10 Schreck-Mieves GmbH, 44225 Dortmund Umstellvorrichtung für eine Zungenvorrichtung einer Weiche
DE19502105C5 (de) * 1995-01-24 2004-12-30 Carl Dan. Peddinghaus Gmbh & Co Kg Verschlußvorrichtung für Weichenzungen
DE10000804A1 (de) * 2000-01-11 2001-07-26 Schreck Mieves Gmbh Weichenverschluß für Weichenzungen
EP1488979A1 (fr) * 2003-06-17 2004-12-22 Siemens Schweiz AG Dispositif de verrouillage pour aiguilles mobiles avec ajustement de profil
US20050178929A1 (en) * 2004-02-17 2005-08-18 General Electric Company Switch machine with improved switch point connectors
WO2007067234A1 (fr) * 2005-12-07 2007-06-14 General Electric Company Systeme pour ensemble d’aiguille sans lubrifiant
DE102008060229A1 (de) * 2008-01-03 2009-07-09 Schwihag Ag Umstellvorrichtung in Eisenbahnweichen
ES2452472B1 (es) * 2011-05-18 2014-12-16 Talleres Alegria, S.A. Dispositivo de encerrojamiento para corazones de punta móvil en aparatos de vía ferroviarios
US8684317B2 (en) * 2011-09-30 2014-04-01 Jim Arnold Railroad switch point roller mechanism

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GB209080A (en) * 1922-12-23 1924-05-22 L Aster Sa Improvements in or relating to locks for railway and like switches
GB233110A (en) * 1924-04-07 1925-05-07 Samuel Summerson Wrightson Improvements relating to railway and tramway points or switches
FR1174622A (fr) * 1957-05-07 1959-03-13 Dispositif de verrouillage automatique de lame d'aiguille pour voies ferrées
CH358825A (de) * 1958-05-09 1961-12-15 Stin Aufschneidbarer Spitzenverschluss an Eisenbahnweichen
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CH456667A (de) * 1967-05-30 1968-07-31 Tech Pour L Ind Nouvelle Sa St Aufschneidbarer Spitzenverschluss für Eisenbahnweichen
US3836771A (en) * 1973-01-26 1974-09-17 Berst P Track switch with latch
DE2345184A1 (de) * 1973-09-07 1975-03-27 Peine Salzgitter Verkehr Klammer eines spitzenverschlusses fuer weichenzungen
DE2352017A1 (de) * 1973-10-17 1975-04-30 Ruhrtaler Gesenkschmiede F W W Klammerspitzenverschluss
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FR2614908B1 (fr) * 1987-05-05 1989-06-16 Alsthom Dispositif de manoeuvre d'un aiguillage
AT388198B (de) * 1987-06-09 1989-05-10 Voest Alpine Ag Weichenbetaetigungsvorrichtung
IT1213950B (it) * 1987-12-16 1990-01-05 Sasib Spa Dispositivo universale di fermascambiatura esterna per deviatoi ferroviari
DE3838415A1 (de) * 1988-11-09 1990-05-10 Fabeg Gmbh Vorrichtung zum verriegeln von schienenspitzen oder weichenzungen mit zugehoerigen backenschienen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995003199A1 (fr) * 1993-07-26 1995-02-02 Bwg Butzbacher Weichenbau Gmbh Dispositif de verrouillage de lames d'aiguilles
WO1995008672A1 (fr) * 1993-09-24 1995-03-30 Bwg Butzbacher Weichenbau Gmbh Appareillage de positionnement
EP0739804A3 (fr) * 1995-04-25 1997-07-02 Wbg Weichenwerk Brandenburg Méthode et dispositif de verrouillage d'une lame d'aiguilles
EP0818376A1 (fr) * 1996-07-10 1998-01-14 TECNOLOGIE MECCANICHE s.r.l. Dispositif de verrouillage pour aiguilles
EP0885795A1 (fr) * 1997-06-20 1998-12-23 Siemens Schweiz AG Dispositif de verrouillage
EP1762454A1 (fr) 2005-09-13 2007-03-14 Schwihag Gesellschaft für Eisenbahnoberbau mbH Dispositif dans un système de manoeuvre d'aiguilles pour le verrouillage d'une lame d'aiguillage

Also Published As

Publication number Publication date
EP0455153A3 (en) 1993-04-21
GR3015483T3 (en) 1995-06-30
DE59104454D1 (de) 1995-03-16
EP0455153B1 (fr) 1995-02-01
ES2068422T3 (es) 1995-04-16
US5195703A (en) 1993-03-23
DK0455153T3 (da) 1995-06-12
CA2041809A1 (fr) 1991-11-05
DE4014248A1 (de) 1991-11-07
ATE117950T1 (de) 1995-02-15

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