EP0996789B1 - Attaches elastiques de fixation de rails de voie ferree et dispositifs associes d'ancrage d'attaches de fixation de rail - Google Patents

Attaches elastiques de fixation de rails de voie ferree et dispositifs associes d'ancrage d'attaches de fixation de rail Download PDF

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Publication number
EP0996789B1
EP0996789B1 EP98932355A EP98932355A EP0996789B1 EP 0996789 B1 EP0996789 B1 EP 0996789B1 EP 98932355 A EP98932355 A EP 98932355A EP 98932355 A EP98932355 A EP 98932355A EP 0996789 B1 EP0996789 B1 EP 0996789B1
Authority
EP
European Patent Office
Prior art keywords
clip
anchoring
assembly
anchoring device
rail fastening
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
EP98932355A
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German (de)
English (en)
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EP0996789A1 (fr
Inventor
Barry Marshall
Brian George Conroy
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.)
Pandrol Ltd
Original Assignee
Pandrol 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
Priority claimed from GB9714899A external-priority patent/GB2327230A/en
Application filed by Pandrol Ltd filed Critical Pandrol Ltd
Priority to EP02022626A priority Critical patent/EP1273709A3/fr
Publication of EP0996789A1 publication Critical patent/EP0996789A1/fr
Application granted granted Critical
Publication of EP0996789B1 publication Critical patent/EP0996789B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E01B9/303—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped bar

Definitions

  • the present invention relates to resilient railway rail fastening clips and associated rail fastening clip anchoring devices.
  • a common system for fastening a railway rail to an underlying foundation comprises a pair of anchoring devices secured to the foundation on either side of the rail when it is in position, which devices retain the anchoring legs of respective resilient rail fastening clips which bear down on the rail.
  • a railway rail fastening clip (known as an "e"-clip) comprising (in one version) a rod of resilient material bent so as to have, proceeding from one free end of the rod to the other free end thereof, firstly a straight anchoring leg, secondly a reverse bend portion, thirdly a portion beside the anchoring leg forming a "heel”, fourthly another reverse bend portion and finally another portion beside the anchoring leg forming a "toe”.
  • This version of the clip is referred to hereafter as a "right-handed” clip.
  • the clip is a mirror image of a "right-handed” clip, made such that the anchoring leg may be inserted into the opposite end of the anchoring device.
  • a railway rail fastening assembly for fastening a railway rail to an underlying foundation, the assembly comprising a resilient railway rail fastening clip and a rail fastening clip anchoring device, the clip being of the type having an anchoring leg whereby the clip is retained by the rail fastening clip anchoring device and having means for resisting unauthorised disengagement of the clip from such an anchoring device, wherein the said means comprise first locating means, provided on the said anchoring leg at a region remote from a free end thereof, for cooperating with second locating means provided inside the housing of such an anchoring device when the anchoring leg of the clip is inserted therein such that the first locating means cannot be seen by visually inspecting the outside of the housing when the clip is in the housing, the said first locating means comprising one of an abutment surface and a projection and the said second locating means comprising the other of the abutment surface and the projection.
  • an assembly embodying the present invention can, in a manner which is simple and reliable, but not readily apparent, increase the force required to remove the clip from the anchoring device, thus reducing the risk of unauthorised removal and increasing the security of the fastening.
  • the means for resisting unauthorised disengagement of the clip are provided out of sight, within the housing of the anchoring device, so that it is far less obvious to an opportunistic thief or vandal how the clip may be removed. Indeed, if any attempt were made to remove a clip embodying the present invention from an anchoring device embodying the present invention using a crowbar, or a rock, such as have been used in the past, this would cause the clip to be held even more securely within the anchoring device.
  • the clip to which the invention is applied is preferably, but not essentially, an "e"-clip or "PR" clip. It should be noted that there is no need to make any adjustments to the overall shape of such clips, for example to lengthen the anchoring legs thereof, in order to apply the invention thereto.
  • the stress in a clip of the "e"-clip or "PR"-clip type when installed is high (perhaps 75%-80% of the maximum stress on the clip) at the position where an anti-vandal feature has conventionally been provided on the clip.
  • the step positioned on the "heel" of a clip such as disclosed in GB 2085057 B, may (depending on the size and shape of the step provided) raise the maximum stress in this area above that anywhere else on the clip, and therefore become one of the critical factors in clip performance.
  • the stress is negligible near the end of the anchoring leg, so the stress concentration effect of providing first locating means on the anchoring leg of the clip is of no consequence.
  • the first locating means comprise an abutment surface, such as the inclined face of a recess, in which case the second locating means comprise a projection.
  • the second locating means comprise an abutment surface, such as an inclined face of a recess, in which case the first locating means comprise a projection.
  • the angle of inclination of the inclined face with respect to the longitudinal axis of the anchoring leg/passageway is desirably in the range from 20° to 90°.
  • the angle at which the abutment surface slopes largely determines the force required to withdraw the clip from the anchoring device.
  • clip removal machines are used to extract conventional clips from the anchoring devices.
  • the angle of the abutment surface slope must be selected so that, although higher than with conventional fastening assemblies, the force required to extract the clip is such that during machine extraction no damage occurs to the machine or the fastening components. In these circumstances a fairly shallow angle, for example 30°, is appropriate.
  • the abutment surface slope should be steeper (for example, greater than 40°), but conventional clip removal machines could probably not be used to extract such clips.
  • a purpose-made tool could be used to apply downwards pressure to the free end of the anchoring leg of the clip visible at the end of the passageway in the anchoring device housing, so as to disengage the first locating means on the anchoring leg of the clip from the second locating means provided inside the housing, and simultaneously to pull the clip free of the anchoring device.
  • Use of such a tool would be facilitated if the housing is such that at least a part, other than the end face, of the free end of the anchoring device of the clip is exposed when installed in that housing.
  • a clip can be correctly positioned within the housing of an anchoring device by forming the recess (constituting the first or second locating means as the case may be) so as to have a further inclined face, oppositely-inclined to the other inclined face, the angle of inclination and position of which further inclined face are configured so as to prevent overdriving of the clip into the anchoring device.
  • the angle of inclination of the further inclined face with respect to the longitudinal axis of the anchoring leg/passageway is desirably in the range from 35° to 90°, and is preferably about 90°.
  • the foot of the further inclined face may be spaced from the foot of the other inclined face by a desired distance.
  • the prior art resilient railway rail fastening clip 10 shown in Figure 1 is a type of "e"-clip.
  • the clip 10 is made by bending a metal rod so as to have, proceeding from one end A of the rod to the other end B, a substantially straight first portion or anchoring leg 11, then a second reverse bend portion 12, then a third portion 13, then a fourth reverse bend portion 14, and finally a fifth portion 15.
  • the clip 10 is in the configuration shown; such that the lowermost points on the third and fifth portions are in the same plane and the clip 10 is viewed from directly above or below that plane, the third and fifth portions appear to lie on opposite sides of the first portion 11.
  • the so-called "PR"-clip is of a similar shape.
  • Both the "e”-clip and the “PR”-clip may be retained, such that the "toe” of the clip (either the third portion 13 or the fifth portion 15) bears on an adjoining rail, by a cast metal rail fastening clip anchoring device or shoulder 100 such as shown in Figure 1B.
  • a cast metal rail fastening clip anchoring device or shoulder 100 such as shown in Figure 1B. Only one of the pair of anchoring devices 100 which would be used in the rail fastening assembly is illustrated in Figure 1B.
  • the anchoring device 100 is secured to a rail foundation, in this case a concrete sleeper 2, by means of a leg 101 embedded in the concrete.
  • the leg 101 is joined to a housing 102 of the anchoring device 100, which housing 102 has a passageway 103 therethrough.
  • a rail 1 having a foot 1a is positioned on a cushioning rail pad 4 between the pair of shoulders 100 and a rail insulator 3 is placed on the rail foot 1a.
  • the anchoring leg 11 of the rail clip 10 is then driven into the passageway 103, deflecting the clip 10 such that the "toe” portion of the clip (in this case the fifth portion 15) exerts a desired force on the foot 1a of the rail 1 through the rail insulator 3.
  • the "heel” portion (in this case the third portion 13) of the clip 10 comes to rest on a ledge portion 104 of the housing 102.
  • An upper surface of the anchoring leg 11 is held in contact with the roof of the passageway 103.
  • anchoring leg 11 of the clip 10 may be chamfered at its free end so as to facilitate insertion of the anchoring leg 11 into the passageway 103 of the anchoring device 100.
  • the right-hand side of Figure 2 shows an anchoring leg 21 of a rail fastening clip 20 of an assembly embodying the present invention.
  • the rail fastening clip 20 is not shown in its entirety, but other than its anchoring leg 21 could be similar to, for example, an "e"-clip, a "PR"-clip or the like.
  • the anchoring leg 21 has a chamfer 21b at its free end A and, spaced from the free end A, first locating means comprising a detent or recess 21a having an abutment surface 21c.
  • the left-hand side of Figure 2 shows an anchoring device or shoulder 200 (not shown in its entirety) for retaining the rail fastening clip 20 has a housing 202 formed therethrough with a passageway 203.
  • second locating means comprising a projection 203a.
  • the first and second locating means cooperate together to provide means for resisting unauthorised removal of the clip 20 from the anchoring device 200.
  • the remainder of the anchoring device 200 could be similar to the anchoring device 100 shown in Figure 1B
  • the detent 21a may be stamped onto the anchoring leg of the clip 20, during or after forming of the clip, and the projection 203a is formed during forming of the anchoring device 200.
  • FIG. 3 differs from those of Figure 2 in that the rail fastening clip 30 (not shown in its entirety) has an anchoring leg 31 with chamfer 31b having first locating means comprising a projection 31a and the anchoring device 300 (not shown in its entirety) has a housing 302 with a passageway 303 formed on a roof thereof with second locating means comprising a recess 303a having an abutment surface 303b.
  • the position and size of the locating means should be chosen such that significant displacement of the anchoring leg is required in order to remove the clip, but without permanent distortion of the clip resulting from such displacement.
  • the locating feature of the anchoring device may be placed adjacent to one end of the passageway or the other depending on whether a "right-handed” clip or a "left-handed” clip is to be used.
  • the feature may be positioned in the centre of the anchoring device. In this case, driving of the clip concerned would be more difficult because of the increased angle subtended by the top of the projection.
  • Figure 4 illustrates a further embodiment of the present invention, based on the embodiment of Figure 2 but having an anchoring device 400 having a modified housing 402, with passageway 403 and projection 403a.
  • One end of the housing 402 is enlarged so as to allow one end of the passageway 403 adjacent to the projection 403a to be cut away so as to have a flared opening 404, whereby the upper surface of the free end A of the anchoring leg 21 is exposed to facilitate access thereto by a purpose-made clip removal tool (described below in more detail with reference to Figs. 5A, 5B and 5C).
  • a purpose-made clip removal tool described below in more detail with reference to Figs. 5A, 5B and 5C.
  • a clip 20(30) can be formed such that it cannot readily be removed from an anchoring device 200 (300, 400) by hammer blows applied in the direction R. Instead, in order to remove such a clip 20(30) it is necessary to deflect the anchoring leg 21(31) downwardly by applying pressure to the free end A thereof so as to disengage the projection 403a (203a, 31a) from the abutment surface 21c (303b), whilst simultaneously driving the clip in the direction R.
  • this may be achieved by using a specially-designed tool 70 having a tip 71 shaped such that it can be inserted into the flared opening 404 between the housing 402 and the upper surface of the free end A of the anchoring leg 21 of the clip 20 (Fig. 5A).
  • a specially-designed tool 70 having a tip 71 shaped such that it can be inserted into the flared opening 404 between the housing 402 and the upper surface of the free end A of the anchoring leg 21 of the clip 20 (Fig. 5A).
  • the tip 71 of the tool 70 is pushed further into the flared opening 404 the free end A of the anchoring leg 21 of the clip 20 is gradually pushed downwards, releasing the detent 21a from the projection 403a, and comes into contact with a face 72 of the tool 70 (Fig. 5B).
  • the anchoring leg 21 is then pushed along the passageway 403 (Fig. 5C).
  • either the clip or the anchoring device may have the abutment surface, but from the viewpoint of manufacture it is likely to be easier and more satisfactory to provide the clip with the abutment surface, by means of a detent for example, and the anchoring device with the projection.
  • embodiments of the present invention described above employ an anchoring device made by a casting process
  • the present invention may also be applied to a pressed steel anchoring device, for example as described below with reference to Figs. 6A, 6B, 7A and 7B, or to a rolled steel plate (not shown).
  • a pressed steel anchoring device 500 has a housing 502 formed so as to have a passageway 503 therethrough.
  • the roof of the passageway 503 is provided, at a position adjacent to but spaced from one end of the passageway 503, with second locating means comprising a projection 504 made by forming an indentation 505 on the top of the housing 502.
  • the projection 504 can be seen more clearly in Fig. 6B, which shows a cross-sectional view of the top of the housing 502 parallel to the passageway 503.
  • the shape and dimensions of the projection 504 are dependent upon the shape and dimensions of the abutment surface with which it is to cooperate.
  • the projection 504 may be formed at a distance of 45mm from one end of the passageway 503 so as to have a width of 5mm, a height of 2mm and a radius of curvature of 3mm.
  • FIGs 7A and 7B show the anchoring leg 51 of a rail fastening clip 50 (not shown in its entirety), which clip is similar in many respects to the clips of Figures 2, 3 and 4.
  • the anchoring leg 51 has a chamfer 51b formed at its free end A and, spaced a short distance from the free end A, a detent or recess 51a.
  • the recess 51a has two abutment faces 51c and 51d, respectively extending downwardly and upwardly (proceeding along the anchoring leg 51 away from the free end A).
  • the upwardly-extending face 51d is steeper than the downwardly-extending face 51c; in the example shown the angle of inclination with respect to the longitudinal axis of the anchoring leg 51 is about 30° for the downwardly-extending face 51c and about 90° towards the top of the upwardly-extending face 51d, the bottom of which has a radius of 1R.
  • the recess 51a may be formed so that the edge nearest the end A of the leg 51 is 10mm therefrom and so as to be 12.5mm long (in the direction in which the leg 51 extends) and 2mm deep.
  • the radius at the foot of the upwardly-extending face 51d is 1mm.
  • the face of the recess which abuts the projection to resist disengagement of the clip is substantially vertical, and hence it would be difficult to remove the clip in the normal manner.
  • the downwardly-extending face 51c is inclined at a fairly shallow angle.
  • the resistance offered is less, since less force is required to move the abutment face 51c over the projection 504. Nonetheless, in this case the force required is still sufficient to prevent clips 50 from becoming displaced from worn anchoring devices 500 in service.
  • the abutment face 51c has a steeper angle of inclination, preferably greater than 40°, when greater resistance to withdrawal is desired.
  • the angle of inclination of the upwardly-extending face 51d can also be varied, but in the embodiments of Figures 6A, 6B, 7A and 7B it has been chosen so as to provide a stop which comes up against the projection 504 when the clip 50 is driven into the anchoring device 500, thereby ensuring that the clip 50 cannot easily be driven beyond its nominal installed position in which the clip sits in its intended working position.
  • a suitably steep upwardly-extending face 51d for example at an angle with respect to the longitudinal axis of the anchoring leg 51 in the range form 35° to 90°, the clip driving force required increases sharply when the clip reaches the correct position, thus preventing overdriving of the clip.
  • a clip as used in an assembly embodying the present invention provided on its anchoring leg with a detent, for example as shown in Figure 2 (rather than a projection such as shown in Figure 3), can be used with existing anchoring devices, not embodying the present invention, thereby allowing the railway to maintain stocks of only one type of clip, which can be used with additional benefits in anchoring devices embodying the invention, but also without disadvantage as compared to conventional clips in existing anchoring devices which do not embody the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Clamps And Clips (AREA)
  • Braking Arrangements (AREA)

Claims (10)

  1. Ensemble de fixation de rails de voie ferrée pour fixer un rail de voie ferrée à une fondation sous-jacente, l'ensemble comprenant une attache élastique (20 ; 30 ; 50) de fixation de rail de voie ferrée et un dispositif d'ancrage (200 ; 300 ; 400 ; 500) d'attache de fixation de rail, l'attache (20 ; 30 ; 50) étant du type comportant une patte d'ancrage (21 ; 31 ; 51) grâce à quoi l'attache (20 ; 30 ; 50) est retenue par le dispositif d'ancrage (200 ; 300 ; 400 ; 500) d'attache de fixation de rail et comportant un moyen (203a, 21a ; 303a, 31a 403a ; 504, 51a) pour résister à un dégagement non autorisé de l'attache (20 ; 30 ; 50) de ce dispositif d'ancrage (200 ; 300 ; 400 ; 500), caractérisé en ce que ledit moyen (203a, 21a ; 303a, 31a ; 403a ; 504, 51a) comprend un premier moyen de positionnement (21a ; 31a ; 51 a), prévu sur ladite patte d'ancrage (21 ; 31 ; 51) en une région distante d'une extrémité libre (A) de celle-ci, pour coopérer avec un deuxième moyen de positionnement (203a ; 303a ; 403a ; 504) prévu à l'intérieur du boítier (202 ; 302 ; 402 ; 502) de ce dispositif d'ancrage (200 ; 300 ; 400 ; 500) quand la patte d'ancrage (21; 31; 51) de l'attache (20 ; 30 ; 50) y est insérée de telle sorte que le premier moyen de positionnement (21a ; 31a ; 51a) ne peut pas être vu en inspectant visuellement l'extérieur du boítier (202 ; 302 ; 402 ; 502) quand l'attache (20 ; 30 ; 50) est dans le boítier (202 ; 302 ; 402 ; 502), ledit premier moyen de positionnement (21a ; 31a ; 51a) comprenant un élément parmi une surface d'appui (21c ; 51c) et une protubérance (31a) et ledit deuxième moyen de positionnement (203a ; 303a ; 403a ; 504) comprenant l'autre élément parmi la surface d'appui (303b) et la protubérance (203a ; 403a ; 504).
  2. Ensemble selon la revendication 1, dans lequel l'attache (20 ; 30 ; 50) comprend une tige en matériau élastique courbée de façon à avoir, en allant d'une extrémité libre (A) de la tige à l'autre extrémité libre (B) de celle-ci, une première partie sensiblement droite constituant ladite patte d'ancrage (21 ; 31 ; 51), puis une deuxième partie courbée à environ 180°, puis une troisième partie à côté de ladite première partie, puis une quatrième partie courbée à environ 180° en enfin une cinquième partie à côté de ladite première partie, la configuration de l'attache (20 ; 30 ; 50) étant telle que, quand l'attache (20 ; 30 ; 50) se trouve dans une orientation dans laquelle les points les plus bas sur les troisième et cinquième parties se trouvent dans le même plan et que l'attache (20 ; 30 ; 50) est vue directement de dessus ou de dessous ce plan, les troisième et cinquième parties apparaissent sur des côtés opposés de ladite première partie.
  3. Ensemble selon la revendication 1 ou 2, dans lequel ladite surface d'appui (51c) est fournie par une face inclinée d'un évidement (51a).
  4. Ensemble selon la revendication 1, 2 ou 3, dans lequel l'angle d'inclinaison de ladite surface d'appui (21c ; 51c) par rapport à l'axe longitudinal de ladite patte d'ancrage (21 ; 31 ; 51) se trouve dans la plage de 20° à 90°.
  5. Ensemble selon la revendication 4, dans lequel ledit angle d'inclinaison vaut environ 30°.
  6. Ensemble selon la revendication 4, dans lequel ledit angle d'inclinaison est supérieur ou égal à environ 40°.
  7. Ensemble selon la revendication 3, ou selon l'une quelconque des revendications 4, 5 ou 6 lorsqu'elles dépendent de la revendication 3, dans lequel l'évidement (51a) comporte une face inclinée supplémentaire (51d), d'inclinaison opposée à celle de la face inclinée (51c) de la revendication 3, l'angle d'inclinaison et la position de ladite face inclinée supplémentaire (51d) étant configurés de façon à empêcher une avancée excessive de l'attache (20 ; 30 ; 50) dans le dispositif d'ancrage (200 ; 300 ; 400 ; 500).
  8. Ensemble selon la revendication 7, dans lequel ledit angle d'inclinaison de ladite face inclinée supplémentaire (51d) par rapport à l'axe longitudinal de ladite patte d'ancrage (21 ; 31 ; 51) se trouve dans la plage de 35° à 90°.
  9. Ensemble selon l'une quelconque des revendications 7 ou 8, dans lequel la base de ladite face inclinée supplémentaire (51d) est espacée de la base de ladite face inclinée (51c) de la revendication 3 d'une distance souhaitée.
  10. Ensemble selon l'une quelconque des revendications précédentes, dans lequel le boítier (202 ; 302 ; 402 ; 502) du dispositif d'ancrage (200 ; 300 ; 400 ; 500) est tel que, lorsque l'attache (20 ; 30 ; 50) est installée dans le dispositif, au moins une partie, autre que la face d'extrémité, d'une extrémité libre (A) de la patte d'ancrage (21 ; 31 ; 51) de l'attache (20 ; 30 ; 50) est exposée pour permettre d'y appliquer une pression au moyen d'un outil de retrait (70) d'attache spécialement conçu.
EP98932355A 1997-07-15 1998-07-02 Attaches elastiques de fixation de rails de voie ferree et dispositifs associes d'ancrage d'attaches de fixation de rail Expired - Lifetime EP0996789B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02022626A EP1273709A3 (fr) 1997-07-15 1998-07-02 Ensemble de fixation d' un rail de voie ferrée

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9714899 1997-07-15
GB9714899A GB2327230A (en) 1997-07-15 1997-07-15 Resilient railway rail fastening clip and rail fastening clip anchoring device
GB9810241A GB2329921B (en) 1997-07-15 1998-05-13 Resilient railway rail fastening clips and associated rail fastening clip anchoring devices
GB9810241 1998-05-13
PCT/GB1998/001956 WO1999004094A1 (fr) 1997-07-15 1998-07-02 Attaches elastiques de fixation de rails de voie ferree et dispositifs associes d'ancrage d'attaches de fixation de rail

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP02022626A Division EP1273709A3 (fr) 1997-07-15 1998-07-02 Ensemble de fixation d' un rail de voie ferrée

Publications (2)

Publication Number Publication Date
EP0996789A1 EP0996789A1 (fr) 2000-05-03
EP0996789B1 true EP0996789B1 (fr) 2003-06-04

Family

ID=26311885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98932355A Expired - Lifetime EP0996789B1 (fr) 1997-07-15 1998-07-02 Attaches elastiques de fixation de rails de voie ferree et dispositifs associes d'ancrage d'attaches de fixation de rail

Country Status (7)

Country Link
EP (1) EP0996789B1 (fr)
CN (1) CN1158429C (fr)
AU (1) AU8229398A (fr)
BR (1) BR9815505A (fr)
GB (1) GB2358034B (fr)
TW (1) TW489844U (fr)
WO (1) WO1999004094A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2270299A1 (fr) 1998-10-14 2000-04-14 Jude Igwemezie Dispositif de retention de rail
GB2388141B (en) * 2002-04-30 2005-05-25 Pandrol Ltd Railway rail fastening clip
GB2435285A (en) * 2006-02-21 2007-08-22 Pandrol Ltd Fastening railway rails
EP3043181B1 (fr) 2008-01-15 2020-04-08 The Board of Trustees of the Leland Stanford Junior University Marqueurs de cellules souches de leucémie myéloïde aiguë
GB2536692A (en) * 2015-03-26 2016-09-28 Pandrol Ltd Vertical and lateral adjustment in a railway rail fastening assembly

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB861473A (en) 1956-08-03 1961-02-22 Lockspike Ltd Improvements in fastening members for anchoring railway rails and in rail-fastening arrangements employing such members
CH354801A (fr) * 1959-05-04 1961-06-15 Lockspike Ltd Dispositif de fixation d'un rail de chemin de fer
GB1510224A (en) 1975-11-07 1978-05-10 Pandrol Ltd Railway rail fastening clip and a railway rail-and-fastening assembly employing it
GB1519875A (en) * 1977-01-24 1978-08-02 Pandrol Ltd Rail fastenings
GB2036143B (en) * 1978-11-29 1982-11-03 Pandrol Ltd Rail clip for holding down a railway rail and apparatus for making such a clip
GB2085057B (en) 1980-09-29 1984-05-16 Pandrol Ltd A rail clip and an assembly on a railway track which includes the clip
US4844337A (en) * 1987-03-27 1989-07-04 Chemetron-Railway Products, Inc. Railway rail assembly
IN185923B (fr) * 1991-12-18 2001-05-19 Pandrol Ltd
DE4240347A1 (de) * 1992-12-01 1994-06-09 Hubmann Hanns Peter Schienenbefestigungsvorrichtung

Also Published As

Publication number Publication date
GB2358034A (en) 2001-07-11
EP0996789A1 (fr) 2000-05-03
CN1264448A (zh) 2000-08-23
GB0109250D0 (en) 2001-05-30
GB2358034B (en) 2001-09-26
WO1999004094A1 (fr) 1999-01-28
AU8229398A (en) 1999-02-10
TW489844U (en) 2002-06-01
CN1158429C (zh) 2004-07-21
BR9815505A (pt) 2000-11-07

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