CA2144018A1 - Rail fastening apparatus - Google Patents
Rail fastening apparatusInfo
- Publication number
- CA2144018A1 CA2144018A1 CA 2144018 CA2144018A CA2144018A1 CA 2144018 A1 CA2144018 A1 CA 2144018A1 CA 2144018 CA2144018 CA 2144018 CA 2144018 A CA2144018 A CA 2144018A CA 2144018 A1 CA2144018 A1 CA 2144018A1
- Authority
- CA
- Canada
- Prior art keywords
- rail
- fastening apparatus
- pair
- portions
- limb portions
- 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.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/16—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from steel
-
- 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
- E01B9/32—Fastening on steel sleepers with clamp members
- E01B9/34—Fastening on steel sleepers with clamp members by resilient steel clips
-
- 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
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
- E01B9/40—Tie-plates for flat-bottom rails
-
- 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
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
- E01B9/44—Fastening the rail on the tie-plate
- E01B9/46—Fastening the rail on the tie-plate by clamps
- E01B9/48—Fastening the rail on the tie-plate by clamps by resilient steel clips
- E01B9/483—Fastening the rail on the tie-plate by clamps by resilient steel clips the clip being a shaped bar
-
- 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
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
- E01B9/44—Fastening the rail on the tie-plate
- E01B9/46—Fastening the rail on the tie-plate by clamps
- E01B9/48—Fastening the rail on the tie-plate by clamps by resilient steel clips
- E01B9/486—Fastening the rail on the tie-plate by clamps by resilient steel clips the clip being a shaped plate
Abstract
A rail fastening apparatus comprises a shoulder member engaging on a side of the rail flange and a rail clip in the form of a resilient bent rod. The rod has limb portions that in the installed position extend transversely of the rail and inner and outer portions adapted to bear on the rail flange and on a bearing surface laterally outwardly of the rail, respectively. The bent rod is generally symmetrical about a vertical plane transverse of the rail, and the limb portions comprise an upper pair and a lower pair. The shoulder member has a reaction surface engaging one of the pairs of limb portions when displaced relative to the shoulder member as a result of upward pressure exerted by said rail flange and displacing this pair into contact with the other pair. This provides a load bearing cross section of increased depth providing increased strength and bending stiffness.
Description
The present invention relates to rail fastening apparatus of the kind comprising a shoulder member engaging a lateral side of the rail flange, and a rail clip in the form of a bent rod engaging with the shoulder member and bearing on the rail flange.
The known forms of rail fastening apparatus of which the applicant has been aware have not been as efficient as is desirable in the design of the bent rod rail clip. With known designs, it has been necessary to form the rail clip of a relatively thick bent rod with a view to providing adequate stiffness and strength to resist rail flange uplift and rail roll over. The use of relatively thick rod, however, makes the rail clip so stiff that it is intolerant of dimensional variations in the components of the rail fastening apparatus, and in the rail and tie. Further, the clip may as a result be more difficult and expensive to manufacture, and the clip relatively heavy so that it is expensive to ship and difficult to install.
According to the invention there is provided a rail fastening apparatus comprising a shoulder member engaging a side of the rail flange and receiving a rail clip in the form of a resilient rod bent to provide in the installed position limb portions extending transversely of the rail and inner and outer portions adapted to bear on the rail flange and on a bearing surface laterally outwardly of the rail, respectively, said bent rod being generally symmetrical about a vertical plane transverse of the rail, said limb portions comprising an upper pair and a lower pair, and said shoulder member having a reaction surface engaging one of said pairs of limb portions when displaced relative to the shoulder member as a result of upward pressure exerted by said rail flange and displacing said one pair into contact with the other pair to provide a load bearing cross section of increased depth providing increased strength and bending stiffness.
_ -- 2 With this arrangement, when one pair of the limb portions is displaced into contact with the other, greatly increased strength and resistance to bending is achieved, since the limb portions effectively provide a beam of increased depth of the cross-section. As is known, the strength of a beam and its bending stiffness are related to the cube power of the depth of the beam.
In the preferred forms of the present invention, one of the pairs of limb portions is offset longitudinally with respect to the other limb portion, and the shoulder member has a reaction surface which comprises an upper surface that reacts with the upper pair of limb portions when the clip is displaced upwardly. In the preferred portion, the shoulder member provides side abutment surfaces that confine the limbs against spread in the longitudinal direction so that in the displaced position, the limb portions are retained in the combined configuration of increased depth.
The accompanying drawings illustrate an example of rail fastening apparatus in accordance with the invention wherein:
Figure 1 is an isometric view of a rail fastening apparatus in accordance with the invention applied on a plate form tie or sleeper.
Figures 2, 3, 4, 5, 6 and 7 show isometric views of the bent rod rail clip employed in Figure 1 from the front, in plan, from the rear, from the back, and side elevation and in front elevation, respectively.
Figures 8, 9 and 10 show a section taken on the line 8-8 in Fig. 6 showing the configuration of the limb portions in the as manufacture and installed positions, and at maximum rail rotation, respectively.
21~4018 Figure 11 is an isometric view from one side of the installation of Fig. 1.
Figure lla shows a cross-section of a modified form of rail tie.
Figures 12 and 13 are end elevation and plan views, respectively, of the installation of Fig. 1.
Figures 14 and 15 are end elevational and partial isometric views of fastening apparatus employing a second embodiment of a rail clip in accordance with the invention.
Figures 16 and 17 are end elevational and partial isometric views of fastening apparatus employing a third embodiment of a rail clip in accordance with the invention.
Referring to the drawings wherein like reference numerals indicate like parts, Fig. 1 shows fastening apparatus 80 fastening a rail 20 to a rail tie or sleeper 22 which may as illustrated in Figure 11 incorporate a baffle plate 46. The tie 22 and plate 46 are described in more detail in applicant's copending United Kingdom patent application 9500700.1, to which reference may be made for further details.
The installation further comprises hook in shoulder members 24b, of differing lengths and dimensions on opposite sides of the rail 20, having hook like leg portions 27 which are passed through openings in a plate member 28 forming an upper portion of the tie 22. The shoulder members 24b have laterally outwardly lower extensions 48 which bear on the plate member 28 and opposed anti-squat wall members 56 for the purposes described in more detail in the above-mentioned U.K. application 9500700.1.
The shoulder member 24b has an opening 38 through 21 ~4018 it, the cross-section of which is seen in Figure 12. The opening 38 provides a downwardly facing abutment surface 37 and has substantially vertically extending side walls 38a, as best seen in Figs. 11 and 13. A rail clip 81, formed of bent metal rod 82, as best seen in Figs. 2 to 7 is inserted through the opening. The clip 81 comprises an outer central portion 83 which engages on the extension 48 of the shoulder member 84b. A lower pair of intermediate limb portions 84 extend inwardly and arcuately downwardly from portion 83 and a pair of upper limb portions 86 extend generally parallel to the lower portions 84 and connect to them through a sharply arcuately upwardly extending transition 88. The upper limb portions 86 terminate in upwardly swept end portions 90.
In the installed position, as seen in Figs. 1 and 11 to 13, the inner ends of the lower limb portions 84 adjacent the transition 88 bear on the rail flange 26, for example through an insulator 29 as described in more detail in above mentioned U.K. application 9500700.1. The rail 20 may be canted, and may be further electrically insulated from ground by a generally rectangular pad 31 which may be of uniform thickness, or may taper as shown. The pad 31 is described in more detail in applicant's above mentioned U.K. application 9500700.1 as well as in applicant's U.S.
patent 5,335,850 dated August 9, 1994, to which reference may be made for further details.
In the installed position, the outer central portion of the clip 81 engages on the bearing surface 48, while the upper limb portions 86 engage on the downwardly facing abutment or reaction surface 37 provided by the upper side of the opening 38. Desirably, the lateral spacing of the lower limb portions 84 is such that, when the clip 81 is driven inwardly through the opening, the portions 84 fit snugly between the vertical side walls 38a, as seen in Figure 9, and the upper limb portions 86 are displaced downwardly toward the lower limb portions 84.
, _ -- 5 It may be noted from Fig. 6 that the lower and upper limb portions 84 and 86 at least in the region between the reaction surface 37 and the inner transition portions 88 are slightly arcuate in a downwardly concave condition, and this assists in retaining the clip in the installed position, since any displacement of the clip 81 outwardly with respect to the shoulder member 24b results .
ln an lncreaslng compressive reaction exerted by the upper reaction surface 37, this reaction having downward and inward components tending to restore the clip to its inward installed position.
The clip 81 effectively serves to guard against uplift of the flange 26 or roll over of the rail 20.
Upward pressure on the inner end of the lower limb portions 84 results in a greatly increased downward reaction between the reaction surface 37 and the upper limb portions 86, so that these are displaced downwardly into contact with the lower limb portions 84 as seen in Fig. 10, thus providing in effect a beam of greatly increased depth, strength and stiffness as compared with the individual rod components 82 of the clip 81. Any reaction tending to cause spreading of the limb portions 86 is resisted by the side walls 38a. As a result there is a greatly increased reaction on the flange 26 at and beyond the stage illustrated in Fig. 10.
Modifications are of course possible. For example the upper limb portions 86 may be spaced so as to engage the side walls 38a and the lower limb portions 84 spaced inwardly and downwardly therefrom.
Fig. lla shows a modified form of tie 22a which as seen in cross-section has a plate member 28a which has downwardly bent ends 28b, as shown in Fig. lla so that the plate 28a has a generally concavely downwardly bowed configuration. This serves to prevent any tendency for the tie 22a to sink downwardly into the gravel or other ballast under the tie 22a. The tie 22a, similar to the tie described in the above mentioned U.K. application 9500700.1 has a downwardly extending web 25 terminating preferably in a bulbous end 25a.
Figs. 14 and 15 show a second embodiment 8la of the clip which differs from the clip 81 of Figs. 1 to 14 in that the central portion 92 of the rod is upwardly offset and bridges between the outer portion of the lower limb portions 84 to facilitate removal of the clip by insertion of a crowbar or other lever between the upwardly offset portion 92 and the lower extension 48.
Fig. 15 shows the extension 48 in more detail and it will be seen it comprises a smoothly arcuate convexly upward entrance ramp 48a, merging smoothly with a smoothly concave longitudinal recess or channel 48b inclining upwardly to an inwardly facing wall 48c. The wall 48c defines an outer side of a longitudinal channel 93 between the wall 48c and the lower side of the outer face of shoulder member 24b. A drainage channel 94 may extend laterally between channel 93 and the exterior.
In Figs. 15, the outer ends of the lower limb portions 84 lodge in the channel 93.
Figs. 16 and 17 show a third embodiment of a clip 81b. In this embodiment the upper limb portions 86 extend outwardly beyond the upswept portions to outer end portions 96 that are spaced above the offset portion 92.
As with the embodiment of Figs. 1 to 13, in Figs.
14 to 17 upward rotation of the rail flange 26 is resisted by the upper limb portions 86 displaced downward into contact with the lower portions 84. In Figs. 16 and 17 the upper portions 96 are additionally displaced downward to contact the offset portion 92 to provide increased stiffness.
- 214~01~
In Figs. 16 and 17 the clip 81b is of somewhat greater length so that the outer ends of the lower limb portions 84 lodge in the recess or channel 48b.
The known forms of rail fastening apparatus of which the applicant has been aware have not been as efficient as is desirable in the design of the bent rod rail clip. With known designs, it has been necessary to form the rail clip of a relatively thick bent rod with a view to providing adequate stiffness and strength to resist rail flange uplift and rail roll over. The use of relatively thick rod, however, makes the rail clip so stiff that it is intolerant of dimensional variations in the components of the rail fastening apparatus, and in the rail and tie. Further, the clip may as a result be more difficult and expensive to manufacture, and the clip relatively heavy so that it is expensive to ship and difficult to install.
According to the invention there is provided a rail fastening apparatus comprising a shoulder member engaging a side of the rail flange and receiving a rail clip in the form of a resilient rod bent to provide in the installed position limb portions extending transversely of the rail and inner and outer portions adapted to bear on the rail flange and on a bearing surface laterally outwardly of the rail, respectively, said bent rod being generally symmetrical about a vertical plane transverse of the rail, said limb portions comprising an upper pair and a lower pair, and said shoulder member having a reaction surface engaging one of said pairs of limb portions when displaced relative to the shoulder member as a result of upward pressure exerted by said rail flange and displacing said one pair into contact with the other pair to provide a load bearing cross section of increased depth providing increased strength and bending stiffness.
_ -- 2 With this arrangement, when one pair of the limb portions is displaced into contact with the other, greatly increased strength and resistance to bending is achieved, since the limb portions effectively provide a beam of increased depth of the cross-section. As is known, the strength of a beam and its bending stiffness are related to the cube power of the depth of the beam.
In the preferred forms of the present invention, one of the pairs of limb portions is offset longitudinally with respect to the other limb portion, and the shoulder member has a reaction surface which comprises an upper surface that reacts with the upper pair of limb portions when the clip is displaced upwardly. In the preferred portion, the shoulder member provides side abutment surfaces that confine the limbs against spread in the longitudinal direction so that in the displaced position, the limb portions are retained in the combined configuration of increased depth.
The accompanying drawings illustrate an example of rail fastening apparatus in accordance with the invention wherein:
Figure 1 is an isometric view of a rail fastening apparatus in accordance with the invention applied on a plate form tie or sleeper.
Figures 2, 3, 4, 5, 6 and 7 show isometric views of the bent rod rail clip employed in Figure 1 from the front, in plan, from the rear, from the back, and side elevation and in front elevation, respectively.
Figures 8, 9 and 10 show a section taken on the line 8-8 in Fig. 6 showing the configuration of the limb portions in the as manufacture and installed positions, and at maximum rail rotation, respectively.
21~4018 Figure 11 is an isometric view from one side of the installation of Fig. 1.
Figure lla shows a cross-section of a modified form of rail tie.
Figures 12 and 13 are end elevation and plan views, respectively, of the installation of Fig. 1.
Figures 14 and 15 are end elevational and partial isometric views of fastening apparatus employing a second embodiment of a rail clip in accordance with the invention.
Figures 16 and 17 are end elevational and partial isometric views of fastening apparatus employing a third embodiment of a rail clip in accordance with the invention.
Referring to the drawings wherein like reference numerals indicate like parts, Fig. 1 shows fastening apparatus 80 fastening a rail 20 to a rail tie or sleeper 22 which may as illustrated in Figure 11 incorporate a baffle plate 46. The tie 22 and plate 46 are described in more detail in applicant's copending United Kingdom patent application 9500700.1, to which reference may be made for further details.
The installation further comprises hook in shoulder members 24b, of differing lengths and dimensions on opposite sides of the rail 20, having hook like leg portions 27 which are passed through openings in a plate member 28 forming an upper portion of the tie 22. The shoulder members 24b have laterally outwardly lower extensions 48 which bear on the plate member 28 and opposed anti-squat wall members 56 for the purposes described in more detail in the above-mentioned U.K. application 9500700.1.
The shoulder member 24b has an opening 38 through 21 ~4018 it, the cross-section of which is seen in Figure 12. The opening 38 provides a downwardly facing abutment surface 37 and has substantially vertically extending side walls 38a, as best seen in Figs. 11 and 13. A rail clip 81, formed of bent metal rod 82, as best seen in Figs. 2 to 7 is inserted through the opening. The clip 81 comprises an outer central portion 83 which engages on the extension 48 of the shoulder member 84b. A lower pair of intermediate limb portions 84 extend inwardly and arcuately downwardly from portion 83 and a pair of upper limb portions 86 extend generally parallel to the lower portions 84 and connect to them through a sharply arcuately upwardly extending transition 88. The upper limb portions 86 terminate in upwardly swept end portions 90.
In the installed position, as seen in Figs. 1 and 11 to 13, the inner ends of the lower limb portions 84 adjacent the transition 88 bear on the rail flange 26, for example through an insulator 29 as described in more detail in above mentioned U.K. application 9500700.1. The rail 20 may be canted, and may be further electrically insulated from ground by a generally rectangular pad 31 which may be of uniform thickness, or may taper as shown. The pad 31 is described in more detail in applicant's above mentioned U.K. application 9500700.1 as well as in applicant's U.S.
patent 5,335,850 dated August 9, 1994, to which reference may be made for further details.
In the installed position, the outer central portion of the clip 81 engages on the bearing surface 48, while the upper limb portions 86 engage on the downwardly facing abutment or reaction surface 37 provided by the upper side of the opening 38. Desirably, the lateral spacing of the lower limb portions 84 is such that, when the clip 81 is driven inwardly through the opening, the portions 84 fit snugly between the vertical side walls 38a, as seen in Figure 9, and the upper limb portions 86 are displaced downwardly toward the lower limb portions 84.
, _ -- 5 It may be noted from Fig. 6 that the lower and upper limb portions 84 and 86 at least in the region between the reaction surface 37 and the inner transition portions 88 are slightly arcuate in a downwardly concave condition, and this assists in retaining the clip in the installed position, since any displacement of the clip 81 outwardly with respect to the shoulder member 24b results .
ln an lncreaslng compressive reaction exerted by the upper reaction surface 37, this reaction having downward and inward components tending to restore the clip to its inward installed position.
The clip 81 effectively serves to guard against uplift of the flange 26 or roll over of the rail 20.
Upward pressure on the inner end of the lower limb portions 84 results in a greatly increased downward reaction between the reaction surface 37 and the upper limb portions 86, so that these are displaced downwardly into contact with the lower limb portions 84 as seen in Fig. 10, thus providing in effect a beam of greatly increased depth, strength and stiffness as compared with the individual rod components 82 of the clip 81. Any reaction tending to cause spreading of the limb portions 86 is resisted by the side walls 38a. As a result there is a greatly increased reaction on the flange 26 at and beyond the stage illustrated in Fig. 10.
Modifications are of course possible. For example the upper limb portions 86 may be spaced so as to engage the side walls 38a and the lower limb portions 84 spaced inwardly and downwardly therefrom.
Fig. lla shows a modified form of tie 22a which as seen in cross-section has a plate member 28a which has downwardly bent ends 28b, as shown in Fig. lla so that the plate 28a has a generally concavely downwardly bowed configuration. This serves to prevent any tendency for the tie 22a to sink downwardly into the gravel or other ballast under the tie 22a. The tie 22a, similar to the tie described in the above mentioned U.K. application 9500700.1 has a downwardly extending web 25 terminating preferably in a bulbous end 25a.
Figs. 14 and 15 show a second embodiment 8la of the clip which differs from the clip 81 of Figs. 1 to 14 in that the central portion 92 of the rod is upwardly offset and bridges between the outer portion of the lower limb portions 84 to facilitate removal of the clip by insertion of a crowbar or other lever between the upwardly offset portion 92 and the lower extension 48.
Fig. 15 shows the extension 48 in more detail and it will be seen it comprises a smoothly arcuate convexly upward entrance ramp 48a, merging smoothly with a smoothly concave longitudinal recess or channel 48b inclining upwardly to an inwardly facing wall 48c. The wall 48c defines an outer side of a longitudinal channel 93 between the wall 48c and the lower side of the outer face of shoulder member 24b. A drainage channel 94 may extend laterally between channel 93 and the exterior.
In Figs. 15, the outer ends of the lower limb portions 84 lodge in the channel 93.
Figs. 16 and 17 show a third embodiment of a clip 81b. In this embodiment the upper limb portions 86 extend outwardly beyond the upswept portions to outer end portions 96 that are spaced above the offset portion 92.
As with the embodiment of Figs. 1 to 13, in Figs.
14 to 17 upward rotation of the rail flange 26 is resisted by the upper limb portions 86 displaced downward into contact with the lower portions 84. In Figs. 16 and 17 the upper portions 96 are additionally displaced downward to contact the offset portion 92 to provide increased stiffness.
- 214~01~
In Figs. 16 and 17 the clip 81b is of somewhat greater length so that the outer ends of the lower limb portions 84 lodge in the recess or channel 48b.
Claims (9)
1. A rail fastening apparatus comprising a shoulder member engaging at least one side of the rail flange and receiving a rail clip in the form of a resilient rod bent to provide in the installed position limb portions extending transversely of the rail and inner and outer portions adapted to bear on the rail flange and on a bearing surface laterally outwardly of the rail, respectively, said bent rod being generally symmetrical about a vertical plane transverse of the rail, said limb portions comprising an upper pair and a lower pair, and said shoulder member having a reaction surface engaging one of said pairs of limb portions when displaced relative to the shoulder member as a result of upward pressure exerted by said rail flange and displacing said one pair into contact with the other pair to provide a load bearing cross section of increased depth providing increased strength and bending stiffness.
2. A rail fastening apparatus according to claim 1 wherein one of said pairs of limb portions is offset longitudinally with respect to the other limb portion.
3. A rail fastening apparatus according to claim 2 wherein said upper pair is offset inwardly with respect to the lower pair.
4. A rail fastening apparatus according to claim 1 wherein said reaction surface comprises an upper surface that reacts with said upper pair of limb portions.
5. A rail fastening apparatus according to claim 1 wherein the shoulder member comprises side abutment surfaces confining said limb portions against spread in the longitudinal direction.
6. A rail fastening apparatus according to claim 1 wherein the rod comprises an outer portion adjacent the centre adapted to bear on said bearing surface, a lower intermediate limb portion extending inwardly , an upper limb portion connected to the lower portion through a sharply arcuately upwardly extending transition, and an upwardly swept portion adjacent an outer end.
7. A rail fastening apparatus according to claim 6 wherein the rod comprises outer portions spaced from the rod centre and an upwardly offset portion bridging longitudinally between said outer portions.
8. A rail fastening apparatus according to claim 7 wherein said rod has an outer end portion spaced above said offset portion and said reaction surface reacting on said upper pair of limb portions to displace said outer end portion downwardly into contact with said offset portion.
9. A rail fastening apparatus according to claim 1 wherein said limb portions extend generally arcuately downwardly between the reaction surface of the shoulder portion and said inner portion.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2144018 CA2144018A1 (en) | 1995-03-06 | 1995-03-06 | Rail fastening apparatus |
| PCT/CA1996/000021 WO1996023107A1 (en) | 1995-01-13 | 1996-01-15 | Rail fastening devices |
| AU43820/96A AU713004B2 (en) | 1995-01-13 | 1996-01-15 | Rail fastening devices |
| BR9607185A BR9607185A (en) | 1995-01-13 | 1996-01-15 | Rail clamping devices |
| CA002210395A CA2210395C (en) | 1995-01-13 | 1996-01-15 | Rail fastening devices |
| EP96900222A EP0803013A1 (en) | 1995-01-13 | 1996-01-15 | Rail fastening devices |
| CN 96192009 CN1175987A (en) | 1995-01-13 | 1996-01-15 | Rail fastening devices |
| US09/963,647 US6431463B2 (en) | 1995-01-13 | 2001-09-27 | Rail fastening devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2144018 CA2144018A1 (en) | 1995-03-06 | 1995-03-06 | Rail fastening apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2144018A1 true CA2144018A1 (en) | 1996-09-07 |
Family
ID=4155371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2144018 Abandoned CA2144018A1 (en) | 1995-01-13 | 1995-03-06 | Rail fastening apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2144018A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005121452A2 (en) * | 2004-06-11 | 2005-12-22 | Pandrol Limited | Fastening rail in railway slide chair assembly |
-
1995
- 1995-03-06 CA CA 2144018 patent/CA2144018A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005121452A2 (en) * | 2004-06-11 | 2005-12-22 | Pandrol Limited | Fastening rail in railway slide chair assembly |
| WO2005121452A3 (en) * | 2004-06-11 | 2006-04-20 | Pandrol Ltd | Fastening rail in railway slide chair assembly |
| AU2005252439B2 (en) * | 2004-06-11 | 2009-10-08 | Vae Eisenbahnsysteme Gmbh | Fastening rail in railway slide chair assembly |
| US7874527B2 (en) | 2004-06-11 | 2011-01-25 | Pandrol Limited | Fastening rail in railway slide chair assembly |
| CN1993522B (en) * | 2004-06-11 | 2011-03-30 | 潘得路有限公司 | Fastening rail in railway slide chair assembly |
| NO337364B1 (en) * | 2004-06-11 | 2016-03-29 | Vae Eisenbahnsysteme Gmbh | Device for attaching a rail track to a sliding chair unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |