EP0153771A1 - Device to unscrew and deliver bolt-nut assemblies on platelayer waggons for rails, and platelayer waggon for rails which employs such device - Google Patents
Device to unscrew and deliver bolt-nut assemblies on platelayer waggons for rails, and platelayer waggon for rails which employs such device Download PDFInfo
- Publication number
- EP0153771A1 EP0153771A1 EP85200104A EP85200104A EP0153771A1 EP 0153771 A1 EP0153771 A1 EP 0153771A1 EP 85200104 A EP85200104 A EP 85200104A EP 85200104 A EP85200104 A EP 85200104A EP 0153771 A1 EP0153771 A1 EP 0153771A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bolt
- nut assemblies
- unscrew
- deliver
- nuts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/24—Fixing or removing detachable fastening means or accessories thereof; Pre-assembling track components by detachable fastening means
- E01B29/28—Fixing or removing detachable fastening means or accessories thereof; Pre-assembling track components by detachable fastening means the fastening means being of screw-and-nut type; Apparatus therefor, adapted to additionally drilling holes
Definitions
- This invention concerns a device to unscrew bolt-nut assemblies on platelayer waggons for rails.
- the invention also concerns a platelayer waggon for rails which employs such device.
- such known machines are intended to remove the above cited components, already disassembled, from railway lines, for instance when existing railway lines are being dismantled.
- patent FR-A-2.118.602 discloses a machine with magnetized crosswise strips to collect the above components. Such magnetized strips send the bolts, nuts, etc. to a central sorter conveyor belt, which carries these components to a set of collection stores.
- Patent FR-A-2.388.086 is also known and discloses a self-propelled machine to remove clips, bolts, etc. from existing railway lines.
- the machine comprises in its lower part some magnetized rollers to collect the above components, which are already disassembled.
- the magnetized rollers take the components thus collected to transverse conveyor belts, which in turn cooperate with a central conveyor belt that delivers clips, bolts, nuts, etc. to a sorting or collection station.
- the nuts are unscrewed by these rotating heads while the operator is keeping the bolts still with his hand.
- the bolt is introduced by the operator by hand into a guide for bolts.
- the present invention has the purpose of improving the unscrewing operation by making it semi-automatic;that is to say, according to the present invention the operator has the sole task of taking the bolt-nut assemblies, namely a bolt and a nut partly meshed together,and introducing them into the unscrewing device of this invention.
- This unscrewing device conveys the bolt-nut assemblies along a path where appropriate rotation means act on the nut and cause it to become unscrewed and to drop into an appropriate collection guide.
- the bolt and nut are conveyed along different guides.
- the bolts run along the whole active tract of the unscrewing device of the invention and are gathered at the end of the same within a guide which delivers the bolts to a first work station of the machine.
- the nuts,instead, being separated from the bolts by the unscrewing device of this invention, are delivered in an appropriate guide.
- This latter guide delivers them to the last work station of the machine so as to be screwed onto the bolts and fastened definitively.
- the invention has the purpose of automatically unscrewing and separating the bolt-nut assemblies into their constituent nut and bolt parts in such a way that the operator has only to perform an initial loading action.
- a further purpose of the invention is to cause the nuts and bolts to be introduced automatically into their respective guides and to be delivered in the same to their respective work stations.
- a further purpose of the invention is to ensure that when the nut leaves its guide, it is positioned with its most integral portion of screw-thread towards the bolt, which is already located on its seating in the plate.
- the invention therefore arranges for the nuts to be turned upside-down while being collected after being unscrewed.
- this is obtained by providing the guide of the nuts with a development such that at the end of such guide the nut has been turned upside-down as compared to its initial position; that is to say, the portion of the nut meshed earlier with the bolt is facing downwards and is therefore, in any event, presumably in good condition.
- the device of the invention includes a conveyor, which consists of a chain means in a preferred embodiment.
- This chain means has on its periphery means able to grip the stem of a bolt-nut assembly introduced into it by the operator.
- Such latter means may consist, for instance, of a series of peripheral plates solidly fixed to the links of the chain.
- the bolt-nut assembly is drawn along to the straight tract, where it is gripped between the plates, which have come close to each other in the meanwhile.
- the bolt-nut assembly is drawn next along the conveyor, and the nut slides against a series of unscrewing means which consist advantageously of rubber or another material with a high coefficient of friction.
- the nut is unscrewed from the end of the bolt and drops and slides through the force of gravity down collection chutes, which convey it to the guide that delivers it to its work station.
- This invention is therefore embodied with a device to unscrew and deliver bolt-nut assemblies on platelayer waggons for rails, which carries out the separation of nuts and bolts from bolt-nut assemblies introduced by an operator into such device and also sends such nuts and such bolts to separate work stations, the device being characterized by including in cooperation:
- the invention is also embodied with a platelayer waggon for rails which is characterized by employing a device thus constituted to unscrew and deliver bolt-nut assemblies.
- a device 11 of a platelayer waggon 10 is located so as to correspond with an operator's cab 31.
- An operator 15 takes bolt-nut assemblies 21 from a store 14.
- the invention provides advantageously for two stores 14, one on each side of the cab 31.
- the outlets of these stores 14 are immediately within reach of the operator 15 on each side.
- the operator 15 takes bolt-nut assemblies 21 from the lateral outlets of each of the stores 14 and positions these assemblies 21 by hand within the device 11 at its loading end 111.
- Fig.l shows a guide 12 for bolts, which is located at the end of the device 11 and delivers bolts 23 separated from their respective nuts 22 to a station 17 for the depositing of bolts.
- a guide 13 for nuts located near the first end 111 of the device 11 delivers nuts 22 separated from their bolts 23 to a station 18 for the depositing of nuts.
- ⁇ ig.1 shows also a positioner trolley 16,which has the task of screwing the nuts 22 onto their respective bolts 23 deposited earlier at 17; however, this positioner trolley 16 does not form part of this invention and will therefore not be described further.
- the guide 13 for nuts includes an initial tract with a bend 113.
- the nut 22 has been separated from its bolt 23, it has to run along this tract 113 and is thus turned upside-down so that its portion of screw-thread meshed earlier with the bolt 23 is facing downwards.
- the nut 22 is then delivered to the station 18 where it is deposited.
- the end tract of the guide 13 comprises a spiral development from a substantially central position towards the outside of the platelayer waggon 10.
- Fig.2 shows how the bolt-nut assembly 21 is introduced at the end 111 of the device 11 and is gripped by engagement means 20 which are borne and moved by a conveyor 19.
- the conveyor 19 consists of a chain but could consist of equivalent means such as a belt or band, for instance.
- the engagement means 20 in this example consist of plates solidly fixed to links of the chain 19.
- the chain 19 is drawn by means of a powered sprocket wheel 25 and a driven wheel 26.
- the drive wheel 25 is powered in a known manner, by an electric motor for instance.
- the plates 20 are spread apart as compared to their reciprocal position in the straight tracts of the chain 19. This facilitates the introduction of the bolt-nut assembly 21, which is then held by means of seatings 120 of a circular shape provided in the engagement plates 20. In this way the bolt-nut assembly 21 is gripped and drawn along the chain 19.
- unscrewing elements 27 consist advantageously of a material which is at least partially resilient and has a high coefficient of friction.
- Such chutes 28 comprise a suitable backwards slope, owing to which the nut 22 slides into the curved portion 113 of the guide 13 (see Fig.l) and is then delivered to the station 18 where it is screwed onto a bolt 23.
- the bolt 23, still in such a position, is delivered to the station 17 for the depositing of bolts.
- the unscrewing elements 27 are positioned on each side of the device 11 so as to obtain an anticlockwise rotation of the nuts 22 on both sides of the device 11.
- the elements 27 are positioned on the outside of the device 11 in the lefthand part of the device 11,whereas they are positioned on the inside in the righthand part of the device 11; in this way an anticlockwise movement of the nuts 22 is always obtained.
- unscrewing elements 27 are envisaged as being separate from each other, but it is possible to envisage elements 27 solidly fixed together, such as corrugated elements or ridges or projections belonging to one single element positioned alongside the path of the conveyor 19.
- the present device 11 provides for the automatic sorting and elimination of faulty bolt-nut assemblies 121 (see Fig.4).
- the bolt-nut assembly 121 is not separated into a nut 22 and bolt 23 by the unscrewing elements 27.
- the bolt-nut assembly 121 therefore pursues its course, remaining held in the seating 120, and completes a full turn about the wheel 25.
- the bolt 23 cannot fall into the guide 12 for bolts since it is withheld by the nut 22 against the engagement elements 20; the bolt-nut assembly 121 therefore continues on its course in the lower branch of the device 11 until it 121 encounters a discharge rib 29 at the end 111 of the device 11.
- the inclined surface of the edge of the discharge rib 29 acts against the shank of the bolt 23 and creates a sideways thrust which discharges the bolt-nut assembly 121 from the engagement means 20.
- the faulty bolt-nut assembly 121 is collected in a station 30 for the collection of faulty bolt-nut assemblies, from which the operator 15 can take it 121 by hand and put it, for example,into an appropriate tray or examine it for re-cycling.
- the lay-out of the device 11 and its inclination and sizes can be varied. It is possible to employ a chain means 19 of a type other than that shown, as well as unscrewing elements 27 embodied with a form different from that described and shown.
Abstract
- - conveyor means (19) with means (20-120) to hold bolt-nut assemblies (21),
- - stationary unscrewing means (27),
- - preferred guide means (28-13) for nuts (22), and
- - preferred guide means (12) for bolts (23).
Description
- This invention concerns a device to unscrew bolt-nut assemblies on platelayer waggons for rails. The invention also concerns a platelayer waggon for rails which employs such device.
- Devices are known which are able to convey bolts, clips, nuts, etc. and are fitted to self-propelled machines on rails.
- Unlike the waggon to which our present invention is applied, such known machines are intended to remove the above cited components, already disassembled, from railway lines, for instance when existing railway lines are being dismantled.
- For instance, patent FR-A-2.118.602 discloses a machine with magnetized crosswise strips to collect the above components. Such magnetized strips send the bolts, nuts, etc. to a central sorter conveyor belt, which carries these components to a set of collection stores.
- Patent FR-A-2.388.086 is also known and discloses a self-propelled machine to remove clips, bolts, etc. from existing railway lines. For this purpose the machine comprises in its lower part some magnetized rollers to collect the above components, which are already disassembled. The magnetized rollers take the components thus collected to transverse conveyor belts, which in turn cooperate with a central conveyor belt that delivers clips, bolts, nuts, etc. to a sorting or collection station.
- The platelayer waggons with which our present invention is concerned are of the type described in the copending application No.83487 A/83 for an Italian patent in the name of the present applicant.
- In the platelayer waggons described in the cited patent application the bolt-nut assemblies are taken by the operator from appropriate storage points arranged at the sides of the control cab and are introduced by hand between two rotating heads, which are located one on each side of the operator himself.
- The nuts are unscrewed by these rotating heads while the operator is keeping the bolts still with his hand.
- As soon as the nut has been unscrewed, it drops into an appropriate conveyor guide which takes it to its working position.
- Instead, according to the embodiment cited above the bolt is introduced by the operator by hand into a guide for bolts.
- The present invention has the purpose of improving the unscrewing operation by making it semi-automatic;that is to say, according to the present invention the operator has the sole task of taking the bolt-nut assemblies, namely a bolt and a nut partly meshed together,and introducing them into the unscrewing device of this invention.
- This unscrewing device conveys the bolt-nut assemblies along a path where appropriate rotation means act on the nut and cause it to become unscrewed and to drop into an appropriate collection guide.
- As soon as the bolt and nut have been separated, they are conveyed along different guides. In fact the bolts run along the whole active tract of the unscrewing device of the invention and are gathered at the end of the same within a guide which delivers the bolts to a first work station of the machine.
- Here the bolts are deposited in correspondence with their respective positions on a sleeper.
- We shall not dwell on the methods for positioning the bolts since such methods are not a part of this invention.
- The nuts,instead, being separated from the bolts by the unscrewing device of this invention, are delivered in an appropriate guide.
- This latter guide delivers them to the last work station of the machine so as to be screwed onto the bolts and fastened definitively.
- On each side of the device there are a guide for bolts and a guide for nuts.
- As we said earlier, the invention has the purpose of automatically unscrewing and separating the bolt-nut assemblies into their constituent nut and bolt parts in such a way that the operator has only to perform an initial loading action.
- A further purpose of the invention is to cause the nuts and bolts to be introduced automatically into their respective guides and to be delivered in the same to their respective work stations.
- A further purpose of the invention is to ensure that when the nut leaves its guide, it is positioned with its most integral portion of screw-thread towards the bolt, which is already located on its seating in the plate.
- The reason for this is that, when the nut has been unscrewed, its portion of screw-thread previously facing outwards away from the bolt may be damaged or, in any event, faulty as a result of being transported or undergoing impacts or stresses, or through other accidental causes.
- The invention therefore arranges for the nuts to be turned upside-down while being collected after being unscrewed.
- According to the invention this is obtained by providing the guide of the nuts with a development such that at the end of such guide the nut has been turned upside-down as compared to its initial position; that is to say, the portion of the nut meshed earlier with the bolt is facing downwards and is therefore, in any event, presumably in good condition.
- The device of the invention includes a conveyor, which consists of a chain means in a preferred embodiment. This chain means has on its periphery means able to grip the stem of a bolt-nut assembly introduced into it by the operator. Such latter means may consist, for instance, of a series of peripheral plates solidly fixed to the links of the chain.
- These links become spread apart at the curved portion of the conveyor, and the operator can therefore introduce a bolt-nut assembly between them easily.
- The bolt-nut assembly is drawn along to the straight tract, where it is gripped between the plates, which have come close to each other in the meanwhile.
- The bolt-nut assembly is drawn next along the conveyor, and the nut slides against a series of unscrewing means which consist advantageously of rubber or another material with a high coefficient of friction.
- In this way,while being conveyed, the nut is unscrewed from the end of the bolt and drops and slides through the force of gravity down collection chutes, which convey it to the guide that delivers it to its work station.
- At the end of the conveyor the bolts, still engaged by the chain, are positioned with their heads downwards and are freed by the action of appropriate thrust means, such as inclined surfaces or mechanical equivalents.
- Such surfaces cause the departure of the bolts from the plates which have been holding them on the chain of the conveyor.
- After such disengagement the bolts drop with their heads downwards.into an appropriate guide which has the purpose of delivering them to a first work station of the platelayer waggon.
- This invention is therefore embodied with a device to unscrew and deliver bolt-nut assemblies on platelayer waggons for rails, which carries out the separation of nuts and bolts from bolt-nut assemblies introduced by an operator into such device and also sends such nuts and such bolts to separate work stations, the device being characterized by including in cooperation:
- - conveyor means with means to hold bolt-nut assemblies,
- - stationary unscrewing means,
- - preferred guide means for nuts, and
- - preferred guide means for bolts.
- The invention is also embodied with a platelayer waggon for rails which is characterized by employing a device thus constituted to unscrew and deliver bolt-nut assemblies.
- We shall now describe, as a non-restrictive example, a preferred embodiment of the invention with the help of the attached figures, in which:-
- Fig.1 gives an overall view of the platelayer waggon to which the device is fitted;
- Fig.2 is a partly cutaway side view of the unscrewing device of the invention;
- Fig.3 is a plan view of the device of Fig.2 according to desired sections;
- Fig.4 is a view of the device cutaway frontally along A-A of Fig.l;
- Fig.5 is a detail of the means which grip the bolt-nut assemblies.
- In Fig.1 a
device 11 of aplatelayer waggon 10 is located so as to correspond with an operator'scab 31. An operator 15 takes bolt-nut assemblies 21 from astore 14. - The invention provides advantageously for two
stores 14, one on each side of thecab 31. The outlets of thesestores 14 are immediately within reach of the operator 15 on each side. - The operator 15 takes bolt-nut assemblies 21 from the lateral outlets of each of the
stores 14 and positions theseassemblies 21 by hand within thedevice 11 at itsloading end 111. - Fig.l shows a
guide 12 for bolts, which is located at the end of thedevice 11 and deliversbolts 23 separated from theirrespective nuts 22 to astation 17 for the depositing of bolts. - A
guide 13 for nuts located near thefirst end 111 of thedevice 11 deliversnuts 22 separated from theirbolts 23 to astation 18 for the depositing of nuts. - Γig.1 shows also a
positioner trolley 16,which has the task of screwing thenuts 22 onto theirrespective bolts 23 deposited earlier at 17; however, thispositioner trolley 16 does not form part of this invention and will therefore not be described further. - In this case the
guide 13 for nuts includes an initial tract with abend 113. In this way, when thenut 22 has been separated from itsbolt 23, it has to run along thistract 113 and is thus turned upside-down so that its portion of screw-thread meshed earlier with thebolt 23 is facing downwards. - The
nut 22 is then delivered to thestation 18 where it is deposited. - The end tract of the
guide 13 comprises a spiral development from a substantially central position towards the outside of theplatelayer waggon 10. - This development causes the
nut 22 to be conveyed towards the outside of theplatelayer waggon 10 in correspondence with thepositioner trolley 16, theunscrewing device 11 being located centrally to theplatelayer waggon 10. - Fig.2 shows how the bolt-
nut assembly 21 is introduced at theend 111 of thedevice 11 and is gripped by engagement means 20 which are borne and moved by aconveyor 19. - In this figure the
conveyor 19 consists of a chain but could consist of equivalent means such as a belt or band, for instance. - The engagement means 20 in this example consist of plates solidly fixed to links of the
chain 19. - The
chain 19 is drawn by means of apowered sprocket wheel 25 and a drivenwheel 26. Thedrive wheel 25 is powered in a known manner, by an electric motor for instance. - As can be seen in particular in Fig.2, at the bends or arches where the
plates 20 are wound on the wheels 25-26, theplates 20 are spread apart as compared to their reciprocal position in the straight tracts of thechain 19. This facilitates the introduction of the bolt-nut assembly 21, which is then held by means ofseatings 120 of a circular shape provided in theengagement plates 20. In this way the bolt-nut assembly 21 is gripped and drawn along thechain 19. - While being thus drawn, the
nut 22 undergoes an unscrewing action applied by unscrewingelements 27,which consist advantageously of a material which is at least partially resilient and has a high coefficient of friction. - In this way the nuts 22 on each side of the device undergo an unscrewing action, at the end of which they drop and are collected by means of
chutes 28 to collect nuts 22. -
Such chutes 28 comprise a suitable backwards slope, owing to which thenut 22 slides into thecurved portion 113 of the guide 13 (see Fig.l) and is then delivered to thestation 18 where it is screwed onto abolt 23. - The
bolt 23, instead, remains held between the engagement means 20 in theseating 120, completes the curved tract around thewheel 25 and then drops, being released by the force of gravity from theseating 120, with its head downwards, into theguide 12 for bolts. - The
bolt 23, still in such a position, is delivered to thestation 17 for the depositing of bolts. - As can be seen in particular in Fig.2, the unscrewing
elements 27 are positioned on each side of thedevice 11 so as to obtain an anticlockwise rotation of the nuts 22 on both sides of thedevice 11. - In fact, in the example of Fig.4 the
elements 27 are positioned on the outside of thedevice 11 in the lefthand part of thedevice 11,whereas they are positioned on the inside in the righthand part of thedevice 11; in this way an anticlockwise movement of the nuts 22 is always obtained. - In the example shown the unscrewing
elements 27 are envisaged as being separate from each other, but it is possible to envisageelements 27 solidly fixed together, such as corrugated elements or ridges or projections belonging to one single element positioned alongside the path of theconveyor 19. - Moreover, the
present device 11 provides for the automatic sorting and elimination of faulty bolt-nut assemblies 121 (see Fig.4). - For instance,if unscrewing fails,for example,owing to rust, jamming on the thread or other causes, the bolt-
nut assembly 121 is not separated into anut 22 andbolt 23 by the unscrewingelements 27. - The bolt-
nut assembly 121 therefore pursues its course, remaining held in theseating 120, and completes a full turn about thewheel 25. - The
bolt 23 cannot fall into theguide 12 for bolts since it is withheld by thenut 22 against theengagement elements 20; the bolt-nut assembly 121 therefore continues on its course in the lower branch of thedevice 11 until it 121 encounters adischarge rib 29 at theend 111 of thedevice 11. - In this example two
discharge ribs 29, one on each side of thechain 19, are provided. - The inclined surface of the edge of the
discharge rib 29 acts against the shank of thebolt 23 and creates a sideways thrust which discharges the bolt-nut assembly 121 from the engagement means 20. - This is facilitated by the positioning of the
ribs 29 in correspondence with the beginning of the curved tract, where the engagement means 20 start to spread apart and thus free the bolt-nut assembly 121. - The faulty bolt-
nut assembly 121 is collected in astation 30 for the collection of faulty bolt-nut assemblies, from which the operator 15 can take it 121 by hand and put it, for example,into an appropriate tray or examine it for re-cycling. - We have described here a preferred embodiment of this invention, but variants are possible without departing thereby from the scope of the invention.
- For instance, the lay-out of the
device 11 and its inclination and sizes can be varied. It is possible to employ a chain means 19 of a type other than that shown, as well as unscrewingelements 27 embodied with a form different from that described and shown. - Further variants are possible without departing thereby from the scope of the invention.
-
- 10 - platelayer waggon
- 11 - unscrewing device
- 111 - loading end
- 12 - guide for bolts
- 13 - guide for nuts
- 113 - curved portion
- 14 - stores
- 15 - operator
- 16 - positioner trolley
- 17 - station for depositing bolts
- 18 - station for depositing nuts
- 19 - conveyor or chain means
- 20 - engagement plates
- 120 - seatings
- 21 - bolt-nut assemblies
- 121 - faulty bolt-nut assemblies
- 22 - nuts
- 23 - bolts
- 24 - frame
- 25 - powered wheel
- 26 - driven wheel
- 27 - unscrewing elements
- 28 - chutes to collect nuts
- 29 - discharge ribs
- 30 - collection of faulty bolt-nut assemblies
- 31 - cab.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85200104T ATE39511T1 (en) | 1984-02-24 | 1985-02-01 | DEVICE FOR UNSCREWING AND DELIVERING BOLT NUT UNITS ON A RAILWAY TROLLEY USING SUCH DEVICE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT83325/84A IT1181166B (en) | 1984-02-24 | 1984-02-24 | UNSCREWING AND CONVEYING DEVICE FOR BOLTS FOR RAILS AND BOLTING MACHINE FOR RAILS ADOPTING SUCH DEVICE |
IT8332584 | 1984-02-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0153771A1 true EP0153771A1 (en) | 1985-09-04 |
EP0153771B1 EP0153771B1 (en) | 1988-12-28 |
Family
ID=11320157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85200104A Expired EP0153771B1 (en) | 1984-02-24 | 1985-02-01 | Device to unscrew and deliver bolt-nut assemblies on platelayer waggons for rails, and platelayer waggon for rails which employs such device |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0153771B1 (en) |
AT (1) | ATE39511T1 (en) |
CZ (1) | CZ121085A3 (en) |
DE (1) | DE3567042D1 (en) |
DK (1) | DK81385A (en) |
IT (1) | IT1181166B (en) |
ZA (1) | ZA85875B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007022965A1 (en) * | 2005-08-25 | 2007-03-01 | Öbb-Infrastruktur Bau Aktiengesellschaft | Method and vehicle combination for machining railway lines |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2118602A5 (en) * | 1970-12-17 | 1972-07-28 | Plasser Bahnbaumasch Franz | |
FR2388086A1 (en) * | 1977-04-22 | 1978-11-17 | Plasser Bahnbaumasch Franz | MOBILE DEVICE USED TO PICK UP SMALL PIECES OF IRON LOCATED ON THE BALLAST OF RAILWAYS |
-
1984
- 1984-02-24 IT IT83325/84A patent/IT1181166B/en active
-
1985
- 1985-02-01 AT AT85200104T patent/ATE39511T1/en not_active IP Right Cessation
- 1985-02-01 EP EP85200104A patent/EP0153771B1/en not_active Expired
- 1985-02-01 DE DE8585200104T patent/DE3567042D1/en not_active Expired
- 1985-02-05 ZA ZA85875A patent/ZA85875B/en unknown
- 1985-02-20 CZ CS851210A patent/CZ121085A3/en unknown
- 1985-02-22 DK DK81385A patent/DK81385A/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2118602A5 (en) * | 1970-12-17 | 1972-07-28 | Plasser Bahnbaumasch Franz | |
FR2388086A1 (en) * | 1977-04-22 | 1978-11-17 | Plasser Bahnbaumasch Franz | MOBILE DEVICE USED TO PICK UP SMALL PIECES OF IRON LOCATED ON THE BALLAST OF RAILWAYS |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007022965A1 (en) * | 2005-08-25 | 2007-03-01 | Öbb-Infrastruktur Bau Aktiengesellschaft | Method and vehicle combination for machining railway lines |
Also Published As
Publication number | Publication date |
---|---|
IT1181166B (en) | 1987-09-23 |
DE3567042D1 (en) | 1989-02-02 |
IT8483325A0 (en) | 1984-02-24 |
CZ121085A3 (en) | 1993-08-11 |
ZA85875B (en) | 1985-09-25 |
ATE39511T1 (en) | 1989-01-15 |
DK81385D0 (en) | 1985-02-22 |
DK81385A (en) | 1985-08-25 |
EP0153771B1 (en) | 1988-12-28 |
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