CA1266025A - Railway coupler shank - follower interface - Google Patents
Railway coupler shank - follower interfaceInfo
- Publication number
- CA1266025A CA1266025A CA000504237A CA504237A CA1266025A CA 1266025 A CA1266025 A CA 1266025A CA 000504237 A CA000504237 A CA 000504237A CA 504237 A CA504237 A CA 504237A CA 1266025 A CA1266025 A CA 1266025A
- Authority
- CA
- Canada
- Prior art keywords
- coupler
- shank
- follower
- butt
- projection
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
- B61G7/10—Mounting of the couplings on the vehicle
Abstract
ABSTRACT
The present invention provides an improved railway coupler butt - follower block interface. The butt end of a coupler shank includes a vertical cutout section. The cutout section is comprised of two angled side edges ending in a rear wall. The follower block includes a vertically extending projection in its face adjacent the coupler butt end. The projection has two angled edge walls ending in a front face.
-i-
The present invention provides an improved railway coupler butt - follower block interface. The butt end of a coupler shank includes a vertical cutout section. The cutout section is comprised of two angled side edges ending in a rear wall. The follower block includes a vertically extending projection in its face adjacent the coupler butt end. The projection has two angled edge walls ending in a front face.
-i-
Description
i61D2S
RAILWAY COUPLER SHANK - FOLLOWER INTERFACE
Back~round of the Invention The present invention relates generally to railway coupler connections and, more particularly, to an improved coupler shanX
- follower interface.
In standard Association of American Railroads (AAR) E type couplers, the main body of the coupler comprises a coupler head affixed to an elongated shank. Depending on the desired car application, the length of the shank can vary from 12 in.
(30.5 cm) to 54 in. (137 cm) or more. The butt end of the coupler shank is most typically a flat, planar section, which 10 abuts the front flat face of a generally rectangular follower block maintained in a yoke and car center sill. Such a flat coupler butt and follower block interface provides a degree of horizontal alignment control to the car by virtue of the lateral eccentricity of buff (compaction) load transmitted through the side edges of the coupler butt relative to the car longitudinal centerline. This occurs when the railway car coupler is laterally angled from that car centerline. The magnitude of latexal force eccentricity i5 depend-ent upon any lateral displacement of the coupler butt from the longitudinal center line of the car that is necessary to accommodate limited horizontal angling.
One attempt in controlling the horizontal displacement of the coupler butt is a Farlow draft gear arrangement wherein a follower block is provided with a centrally located pin extending from one face thereof. The coupler shank has a longitudinal hole to receive the pin thereby providing some degree of stability for the coupler butt position. This arrangement does not provide ~6602~ii the desired bearing area and a cooperating hoLe in the coupler butt limited its serviceability.
In another known design a vertically extending semicircular groove is provided in a coupler butt, and a vertically extending semicircular projection is provided on the mating face of the follower block. This arrangement provides a better degree of control of the coupler-follower force eccentricity to the car center line than does the Farlow arrangement but does not provide adequate lateral bearing surface as the coupler butt and follower surfaces are guided into engagement.
Accordingly, it is an object of the present invention to provide an improved coupler butt - follower block interface.
Summary of the Invention The present invention provides a railway coupler arrangement having an improved coupler butt - follower block interface. The coupler comprises a main section having a coupler head and integral elongated shank extending therefrom. The coupler and shank are of an AAR E type, wherein the shank is held to a yoke structure by a horizontal key passing through slots in two sides of the yoke structure and through an accommodating horizontal slot in the end of the coupler shank. The butt end of the coupler shank i5 a flat, generally rectangular surface, and is adjacent a generally rectangular follower block which is also received in the yoke. The butt end face of the coupler shank has a vertically extending cutout portion which extends from the top to the bottom of the butt end face. This vertical cutout portion is formed by two angled sides extending inwardly to a forward wall. Sections of the face to either side of the vertical cutout portion form end face walls. The sideq of the cutout portion extend from a normal to the face at an angle of from 30 to 45, ~26~
The follower block is a generally rectangular device received between the upper and lower yoke straps. The front face of the follower which is adjacent the butt end of the coupler shank has a raised projection extending from near its top edge to near its bottom edge in line with the vertical center line of the follower. The projection is formed by two side edges joined by a front wall or face. Each side edge extends from a normal to the front face of the follower at an angle of 30 to 45.
When the coupler shank is centered horizontally in the yoke and center sill structure, under a buff or compression force, the end face walls of the shank butt will flushly contact the front face of the follower. As the depth of the cutout portion of the butt end of the coupler shank is greater than the height of the projection outward from the follower, no contact will occur between the front wall of the follower projection and the front wall of the cutoff of the shank butt. The horizontal movement of the shank butt in the yoke and center sill structure due to horizontal displacement angling of the coupler head will be limited by the contact of one of the angled sides of the cutoff portion o~ the shank butt with one of side edges of the follower projection. Accordingly, depending on the length of the coupler shank and the desired maximum horizontal angling of the coupler shank in the center sill, the angles and relative sizes of the shank butt cutout and follower projection can be adjusted to assure that the desired contact will occur between the edge of the shank butt cutout and the projection edge of the follower within the range of the lateral location of the follower as controlled by the relative spacing of the follower sides and the inside side wall of the center sill. Under the most adverse conditiong, the follower block will be displaced laterally so that one of the side edges opyosite the edge contact b~-tween cutout and projection will contact an inside wall of the center sill.
The angling of the edges of the shank butt cutout and the edge walls of the follower projection may vary as described above, but for a particular coupler arrangement the angling will be complementary. This assures flush contact between the adjacent edge of the shank butt cutout and the edge wall of the projection on the follower.
In particular, the present invention provides a railway coupler comprising an elongated shank received in a center sill structure, said shank having a butt end portion with an end face having a vertical cutout portion, said vertical cutout portio~
formed by two angled sides joined by a forward wall, with sections of the end face to either side of said vertical cutout portion forming end face walls, and a follower received in a yoke in said center sill structure adjacent th~ butt end of said shank, said follower comprising a generally rectangular, planar element having a raised projection extending along the vertical axis of one face of said follower, said projection formed by two side edges joined by a front wall, said follower projection adapted to be received in said shank butt cutout portion to limit the horizontal movement of the shank butt in the center sill structure.
Brief ~escription of the Drawin~s In the drawings, Figure 1 is a top view of a coupler head and extended length shank in accordance with the present invention;
Figure 2 is a top partial view of a coupler shank, yoke, car sill structure and follower block in accordance with the present invention;
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Figure 3 is a front view of the follower block face having the projection extending therefrom and, Figure 4 is a cross section through lines 4-4 of the follower block of Figure 3.
Descri~ion of the Preferred Embodiment Referring now to Figure 1 of the drawings, a railway coupler includes a head lO shown as a one-piece cast metal assembly having an elongated, generally rectangular shank 12 extending therefrom. Shank 12 includes a horizontal slot 16 near butt end 14 thereof. Modifications to end face la of butt end 14, as may also be seen in Figure 2, include a vertical cutout section 19 extending the entire height of end face 18. Vertical cutout section l9 is comprised of side walls 20 and 22 extending inwardly to end wall 24. Side edges ~0 and 22 are positioned at an angle of from 30-45 from a line parallel to the longitudinal axis 26 of coupler shank 12, which is normal to edge faces 21 and 23 to either side of cutout section l9.
Referring now to Figure 2, coupler shank 12 is shown in a top view mounted in car center sill structure including side walls 30 and 32. A yoke having side sections 40 and 42 is received between the center sill side sections 30 and 32. A
generally rectangular, flat, elongated key 38 passes through opening 34 in center sill side 30, opening 44 in yoke section 40, through slot 16 in coupler shank 12, through opening 46 in yoke side 42 and outward through opening 36 in center sill side 32.
A generally rectangular follower block 50 is placed between extensions 52 and 54 of the car center sill structure. The follower block 50 has convex curved side surfaces 56, 58 to minimize wear contact against the inside surfaces of center sill walls 52, 54. Extending from front face 60 of follower block 50 ~%~
is projection 62 which is comprised of angled side walls 64 and 66 joined by a front wall 68. Front wall 68 is generally parallel to front face 60, although front wall 68 may be of a convex configuration. Side walls 64 and 66 extend from front wall 60 at an angle of from 30 to 45 from a perpendicular to front face 60. As best seen in Figures 3 and 4, follower block 50 includes curved indentations 70, 72 to either side of side walls 64, 66. Indentations 70, 72 aid in the casting of projection 62 or follower blocX 50. Note that although projection 62 is not shown as extending for the entire height of follower 50, such an embodiment could accomplish the desired function of the present invention.
As shown in Figure 2, the maximum desired horizontal displacement of coupler butt 14 is shown in conjunction with horizontal angling limits as controlled by the width of coupler shank 12 and the spacing of yoke sections 40 and 46 or the spacing of sill sidewalls 30 and 32. Upon horizontal angling of coupler shank 12 or lateral displacement of its butt 14, contact will occur between sidewall 22 of coupler shank cutout and sidewall 64 of follower projection 62. Such contact will force follower 50 into contact with center sill sidewall 52 at side edge 56 of follower 50. Note that the follower may also be displaced from perpendicular alignment with sidewalls 52, 54 of the car center sill. Appropriate sizing of ~he coupler butt end cutout and projection 62 on follower block 50 is desired to avoid contact at the end 21 or 23 of coupler butt end 14 and yoke side 40 near its end 41. However, contact ~ay occur under horizontal angling between coupler shank 12 and center sill side 32. This contact will be minimized to all but eliminate wear on coupler shank 12 due to the appropriate relative sizing and spacing of
RAILWAY COUPLER SHANK - FOLLOWER INTERFACE
Back~round of the Invention The present invention relates generally to railway coupler connections and, more particularly, to an improved coupler shanX
- follower interface.
In standard Association of American Railroads (AAR) E type couplers, the main body of the coupler comprises a coupler head affixed to an elongated shank. Depending on the desired car application, the length of the shank can vary from 12 in.
(30.5 cm) to 54 in. (137 cm) or more. The butt end of the coupler shank is most typically a flat, planar section, which 10 abuts the front flat face of a generally rectangular follower block maintained in a yoke and car center sill. Such a flat coupler butt and follower block interface provides a degree of horizontal alignment control to the car by virtue of the lateral eccentricity of buff (compaction) load transmitted through the side edges of the coupler butt relative to the car longitudinal centerline. This occurs when the railway car coupler is laterally angled from that car centerline. The magnitude of latexal force eccentricity i5 depend-ent upon any lateral displacement of the coupler butt from the longitudinal center line of the car that is necessary to accommodate limited horizontal angling.
One attempt in controlling the horizontal displacement of the coupler butt is a Farlow draft gear arrangement wherein a follower block is provided with a centrally located pin extending from one face thereof. The coupler shank has a longitudinal hole to receive the pin thereby providing some degree of stability for the coupler butt position. This arrangement does not provide ~6602~ii the desired bearing area and a cooperating hoLe in the coupler butt limited its serviceability.
In another known design a vertically extending semicircular groove is provided in a coupler butt, and a vertically extending semicircular projection is provided on the mating face of the follower block. This arrangement provides a better degree of control of the coupler-follower force eccentricity to the car center line than does the Farlow arrangement but does not provide adequate lateral bearing surface as the coupler butt and follower surfaces are guided into engagement.
Accordingly, it is an object of the present invention to provide an improved coupler butt - follower block interface.
Summary of the Invention The present invention provides a railway coupler arrangement having an improved coupler butt - follower block interface. The coupler comprises a main section having a coupler head and integral elongated shank extending therefrom. The coupler and shank are of an AAR E type, wherein the shank is held to a yoke structure by a horizontal key passing through slots in two sides of the yoke structure and through an accommodating horizontal slot in the end of the coupler shank. The butt end of the coupler shank i5 a flat, generally rectangular surface, and is adjacent a generally rectangular follower block which is also received in the yoke. The butt end face of the coupler shank has a vertically extending cutout portion which extends from the top to the bottom of the butt end face. This vertical cutout portion is formed by two angled sides extending inwardly to a forward wall. Sections of the face to either side of the vertical cutout portion form end face walls. The sideq of the cutout portion extend from a normal to the face at an angle of from 30 to 45, ~26~
The follower block is a generally rectangular device received between the upper and lower yoke straps. The front face of the follower which is adjacent the butt end of the coupler shank has a raised projection extending from near its top edge to near its bottom edge in line with the vertical center line of the follower. The projection is formed by two side edges joined by a front wall or face. Each side edge extends from a normal to the front face of the follower at an angle of 30 to 45.
When the coupler shank is centered horizontally in the yoke and center sill structure, under a buff or compression force, the end face walls of the shank butt will flushly contact the front face of the follower. As the depth of the cutout portion of the butt end of the coupler shank is greater than the height of the projection outward from the follower, no contact will occur between the front wall of the follower projection and the front wall of the cutoff of the shank butt. The horizontal movement of the shank butt in the yoke and center sill structure due to horizontal displacement angling of the coupler head will be limited by the contact of one of the angled sides of the cutoff portion o~ the shank butt with one of side edges of the follower projection. Accordingly, depending on the length of the coupler shank and the desired maximum horizontal angling of the coupler shank in the center sill, the angles and relative sizes of the shank butt cutout and follower projection can be adjusted to assure that the desired contact will occur between the edge of the shank butt cutout and the projection edge of the follower within the range of the lateral location of the follower as controlled by the relative spacing of the follower sides and the inside side wall of the center sill. Under the most adverse conditiong, the follower block will be displaced laterally so that one of the side edges opyosite the edge contact b~-tween cutout and projection will contact an inside wall of the center sill.
The angling of the edges of the shank butt cutout and the edge walls of the follower projection may vary as described above, but for a particular coupler arrangement the angling will be complementary. This assures flush contact between the adjacent edge of the shank butt cutout and the edge wall of the projection on the follower.
In particular, the present invention provides a railway coupler comprising an elongated shank received in a center sill structure, said shank having a butt end portion with an end face having a vertical cutout portion, said vertical cutout portio~
formed by two angled sides joined by a forward wall, with sections of the end face to either side of said vertical cutout portion forming end face walls, and a follower received in a yoke in said center sill structure adjacent th~ butt end of said shank, said follower comprising a generally rectangular, planar element having a raised projection extending along the vertical axis of one face of said follower, said projection formed by two side edges joined by a front wall, said follower projection adapted to be received in said shank butt cutout portion to limit the horizontal movement of the shank butt in the center sill structure.
Brief ~escription of the Drawin~s In the drawings, Figure 1 is a top view of a coupler head and extended length shank in accordance with the present invention;
Figure 2 is a top partial view of a coupler shank, yoke, car sill structure and follower block in accordance with the present invention;
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Figure 3 is a front view of the follower block face having the projection extending therefrom and, Figure 4 is a cross section through lines 4-4 of the follower block of Figure 3.
Descri~ion of the Preferred Embodiment Referring now to Figure 1 of the drawings, a railway coupler includes a head lO shown as a one-piece cast metal assembly having an elongated, generally rectangular shank 12 extending therefrom. Shank 12 includes a horizontal slot 16 near butt end 14 thereof. Modifications to end face la of butt end 14, as may also be seen in Figure 2, include a vertical cutout section 19 extending the entire height of end face 18. Vertical cutout section l9 is comprised of side walls 20 and 22 extending inwardly to end wall 24. Side edges ~0 and 22 are positioned at an angle of from 30-45 from a line parallel to the longitudinal axis 26 of coupler shank 12, which is normal to edge faces 21 and 23 to either side of cutout section l9.
Referring now to Figure 2, coupler shank 12 is shown in a top view mounted in car center sill structure including side walls 30 and 32. A yoke having side sections 40 and 42 is received between the center sill side sections 30 and 32. A
generally rectangular, flat, elongated key 38 passes through opening 34 in center sill side 30, opening 44 in yoke section 40, through slot 16 in coupler shank 12, through opening 46 in yoke side 42 and outward through opening 36 in center sill side 32.
A generally rectangular follower block 50 is placed between extensions 52 and 54 of the car center sill structure. The follower block 50 has convex curved side surfaces 56, 58 to minimize wear contact against the inside surfaces of center sill walls 52, 54. Extending from front face 60 of follower block 50 ~%~
is projection 62 which is comprised of angled side walls 64 and 66 joined by a front wall 68. Front wall 68 is generally parallel to front face 60, although front wall 68 may be of a convex configuration. Side walls 64 and 66 extend from front wall 60 at an angle of from 30 to 45 from a perpendicular to front face 60. As best seen in Figures 3 and 4, follower block 50 includes curved indentations 70, 72 to either side of side walls 64, 66. Indentations 70, 72 aid in the casting of projection 62 or follower blocX 50. Note that although projection 62 is not shown as extending for the entire height of follower 50, such an embodiment could accomplish the desired function of the present invention.
As shown in Figure 2, the maximum desired horizontal displacement of coupler butt 14 is shown in conjunction with horizontal angling limits as controlled by the width of coupler shank 12 and the spacing of yoke sections 40 and 46 or the spacing of sill sidewalls 30 and 32. Upon horizontal angling of coupler shank 12 or lateral displacement of its butt 14, contact will occur between sidewall 22 of coupler shank cutout and sidewall 64 of follower projection 62. Such contact will force follower 50 into contact with center sill sidewall 52 at side edge 56 of follower 50. Note that the follower may also be displaced from perpendicular alignment with sidewalls 52, 54 of the car center sill. Appropriate sizing of ~he coupler butt end cutout and projection 62 on follower block 50 is desired to avoid contact at the end 21 or 23 of coupler butt end 14 and yoke side 40 near its end 41. However, contact ~ay occur under horizontal angling between coupler shank 12 and center sill side 32. This contact will be minimized to all but eliminate wear on coupler shank 12 due to the appropriate relative sizing and spacing of
2~i projection 62 on follower block 50 and the cutout portion 19 of coupl er shank butt end 14 .
Claims (11)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A railway coupler comprising:
an elongated shank portion in a center sill structure, said shank portion having a butt end, said butt end having a vertical groove therein, said groove formed by two outwardly angled sides and a front wall joining said sides, and a follower block of a generally rectangular shape, said follower block having a vertical projection extending from a front face thereof, said projection formed by two angled side walls and a front wall joining said side walls, wherein adjacent surfaces of said follower block projection side walls and said butt end groove sides are angled to about the same angle so as to form complementary surfaces, said follower block projection adapted to be received in said shank butt end vertical groove to limit the horizontal movement of the shank butt end.
an elongated shank portion in a center sill structure, said shank portion having a butt end, said butt end having a vertical groove therein, said groove formed by two outwardly angled sides and a front wall joining said sides, and a follower block of a generally rectangular shape, said follower block having a vertical projection extending from a front face thereof, said projection formed by two angled side walls and a front wall joining said side walls, wherein adjacent surfaces of said follower block projection side walls and said butt end groove sides are angled to about the same angle so as to form complementary surfaces, said follower block projection adapted to be received in said shank butt end vertical groove to limit the horizontal movement of the shank butt end.
2. The coupler of claim 1 wherein the butt end of the coupler includes an edge face to each side of the groove, said groove being of sufficient depth such that upon said coupler butt edge faces both flushly engaging said follower front face to either side of said projection, no contact occurs between said front wall of said projection and said front wall of said groove.
3. The coupler of claim 1 wherein, upon horizontal angling of said coupler shank or lateral displacement of said butt end in said center sill structure, one of the angled sides of said coupler butt end groove will contact the adjacent angled side wall of said follower projection to limit the maximum displacement of said coupler butt.
4. The coupler of claim 3 wherein said contact occurs prior to an outer edge of the coupler shank contacting an inner surface of said center sill structure.
5. The coupler of claim 3 wherein said contact occurs prior to an outer edge of the coupler shank contacting an inner surface of a yoke within said center sill structure.
6. The coupler of claim 1 wherein a maximum horizontal offset of said coupler butt occurs when one of said shank butt groove sides contacts the adjacent angled side wall of said follower projection, and when a side edge of said follower contacts an inner wall of said center sill.
7. The coupler of claim 1 wherein said butt end groove sides are outwardly angled at the same angle to said rear wall.
8. The coupler of claim 1 wherein said follower block projection side walls are outwardly angled at the same angle to said front wall.
9. A railway coupler comprising:
an elongated shank received in a center sill structure, said shank having a butt end portion with an end face having a vertical cutout portion, said vertical cutout portion formed by two angled sides joined by a forward wall, with sections of the end face to either side of said vertical cutout portion forming end face walls, and a follower received in a yoke in said center sill structure adjacent the butt end of said shank, said follower comprising a generally rectangular, planar element having a raised projection extending along the vertical axis of one face of said follower, said projection formed by two side edges joined by a front wall, wherein adjacent surfaces of said follower projection side edges and said shank butt cutout angled sides are angled at about the same angle to form complementary surfaces, said follower projection adapted to be received in said shank butt cutout portion to limit the horizontal movement of the shank butt in the center sill structure.
an elongated shank received in a center sill structure, said shank having a butt end portion with an end face having a vertical cutout portion, said vertical cutout portion formed by two angled sides joined by a forward wall, with sections of the end face to either side of said vertical cutout portion forming end face walls, and a follower received in a yoke in said center sill structure adjacent the butt end of said shank, said follower comprising a generally rectangular, planar element having a raised projection extending along the vertical axis of one face of said follower, said projection formed by two side edges joined by a front wall, wherein adjacent surfaces of said follower projection side edges and said shank butt cutout angled sides are angled at about the same angle to form complementary surfaces, said follower projection adapted to be received in said shank butt cutout portion to limit the horizontal movement of the shank butt in the center sill structure.
10. The coupler of claim 9 wherein the maximum horizontal movement of the shank butt in the center sill structure is limited by the contact of one of the angled sides of the cutout portion of the shank butt with one of the side edges of the follower projection and the contact of an edge of said follower with a sidewall of said center sill.
11. The coupler of claim 9 wherein the relative height of the projection outward from the follower is less than the depth of the cutout in the shank butt so that, upon flush contact of the end face walls of the shank butt with the one face of the follower, the front wall of the follower projection does not contact the forward wall of the cutout portion of the shank butt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72280485A | 1985-04-12 | 1985-04-12 | |
| US722,804 | 1985-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1266025A true CA1266025A (en) | 1990-02-20 |
Family
ID=24903456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000504237A Expired - Fee Related CA1266025A (en) | 1985-04-12 | 1986-03-17 | Railway coupler shank - follower interface |
Country Status (10)
| Country | Link |
|---|---|
| AU (1) | AU583603B2 (en) |
| BR (1) | BR8601640A (en) |
| CA (1) | CA1266025A (en) |
| ES (1) | ES8704404A1 (en) |
| GB (1) | GB2173754B (en) |
| IN (1) | IN167184B (en) |
| MX (1) | MX161730A (en) |
| PT (1) | PT82330B (en) |
| ZA (1) | ZA861988B (en) |
| ZW (1) | ZW6386A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021156183A1 (en) * | 2020-02-03 | 2021-08-12 | Voith Patent Gmbh | Hitch coupling and rail vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6986432B2 (en) | 2003-01-30 | 2006-01-17 | Asf-Keystone, Inc. | Common cast draft sill for type E and F draft gear |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA785450B (en) * | 1977-10-13 | 1979-09-26 | Westinghouse Air Brake Co | Housing for draft gear |
| CH637338A5 (en) * | 1979-02-05 | 1983-07-29 | Alusuisse | LENGTH CARRIER OF A RAILWAY CAR. |
| US4249664A (en) * | 1979-07-30 | 1981-02-10 | Holland Company | Rigidifying arrangement for self lubricating yoke wear plate assemblies |
-
1986
- 1986-03-14 ZW ZW63/86A patent/ZW6386A1/en unknown
- 1986-03-17 CA CA000504237A patent/CA1266025A/en not_active Expired - Fee Related
- 1986-03-17 IN IN192/MAS/86A patent/IN167184B/en unknown
- 1986-03-18 ZA ZA861988A patent/ZA861988B/en unknown
- 1986-04-02 PT PT82330A patent/PT82330B/en not_active IP Right Cessation
- 1986-04-02 AU AU55578/86A patent/AU583603B2/en not_active Ceased
- 1986-04-08 GB GB08608501A patent/GB2173754B/en not_active Expired
- 1986-04-10 MX MX2125A patent/MX161730A/en unknown
- 1986-04-11 ES ES553890A patent/ES8704404A1/en not_active Expired
- 1986-04-11 BR BR8601640A patent/BR8601640A/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021156183A1 (en) * | 2020-02-03 | 2021-08-12 | Voith Patent Gmbh | Hitch coupling and rail vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| AU583603B2 (en) | 1989-05-04 |
| ZA861988B (en) | 1986-10-29 |
| GB2173754B (en) | 1988-12-14 |
| GB2173754A (en) | 1986-10-22 |
| PT82330A (en) | 1986-05-01 |
| PT82330B (en) | 1992-06-30 |
| AU5557886A (en) | 1986-10-16 |
| ES553890A0 (en) | 1987-04-01 |
| GB8608501D0 (en) | 1986-05-14 |
| IN167184B (en) | 1990-09-15 |
| ES8704404A1 (en) | 1987-04-01 |
| BR8601640A (en) | 1986-12-16 |
| MX161730A (en) | 1990-12-20 |
| ZW6386A1 (en) | 1987-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |