US20040120760A1 - Impact attenuating device for vehicle - Google Patents

Impact attenuating device for vehicle Download PDF

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Publication number
US20040120760A1
US20040120760A1 US10/424,945 US42494503A US2004120760A1 US 20040120760 A1 US20040120760 A1 US 20040120760A1 US 42494503 A US42494503 A US 42494503A US 2004120760 A1 US2004120760 A1 US 2004120760A1
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US
United States
Prior art keywords
impact
vehicle
front part
attenuating device
attenuator
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
Application number
US10/424,945
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English (en)
Inventor
Arne Carlsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vagverket
Original Assignee
Vagverket
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vagverket filed Critical Vagverket
Assigned to VAGVERKET reassignment VAGVERKET ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CARLSSON, ARNE
Publication of US20040120760A1 publication Critical patent/US20040120760A1/en
Abandoned legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/14Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
    • E01F15/145Means for vehicle stopping using impact energy absorbers
    • E01F15/148Means for vehicle stopping using impact energy absorbers mobile arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R2019/005Crash attenuators, i.e. means added to highway service vehicles for softening high speed impacts

Definitions

  • the present invention relates to an impact attenuating device to be connected to a vehicle, especially an impact attenuator which is transported as a trailer.
  • An impact attenuating device of this kind is disclosed in WO 01/87671 A1.
  • the disclosed impact attenuator has a front member connecting the impact attenuator to a vehicle.
  • the impact attenuator is connected in a transporting position, in which the impact attenuator is connected as a trailer to the vehicle, or in an operating position, in which the impact attenuator is connected as a rigid extension of the vehicle.
  • Impact attenuators are used, at e.g. roadwork areas, to protect road-users, men at work and equipment.
  • the impact attenuators task is to, in a soft way, stop vehicles from entering the roadwork area. This is achieved by an attenuation device that dampens the force of collision from a colliding vehicle by deformation of the construction, e.g. by a metal construction with zones of deformation or an elastical construction of polymeric material.
  • Impact attenuators are generally difficult to transport because the distance between the vehicles rear axis and the rear point of the impact attenuator, the overhang, is long.
  • a long overhang causes great problems in sharp bends, intersections, roundabouts etc.
  • the overhang sweeps over a large area outside the vehicle's own lane, and in some traffic environments, it may be difficult to transport the device.
  • Another problem is that an impact attenuator arranged at the back of a vehicle affects the axle pressure. There is a great pressure on the rear axle and a small pressure on the front axle, which may make the steering difficult.
  • the present invention relates to improvements of the prior art.
  • Known impact attenuators of this type shifts between a transport- and an operating position by moving the whole impact attenuator away from the vehicle.
  • the drawback with this solution is that the turning radius is limited due to the fact that the force transferring beams may hit the vehicle.
  • the invention solves this problem by arranging an extension device in the impact attenuator between a front part, fixedly connected to the vehicle, and an attenuating device.
  • FIG. 1 shows an impact attenuating device in transport position.
  • FIG. 2 shows an impact attenuating device in transport position from above.
  • FIG. 3 shows turning in transport position from above.
  • FIG. 4 shows section A-A in FIG, 1 , front part and traffic routing board.
  • FIG. 5 shows section B-B in FIG. 1, rear part.
  • FIG. 6 shows the rear part in transport position.
  • FIG. 7 shows section C-C in FIG. 6, rear part.
  • FIG. 8 shows an impact attenuating device in operating position.
  • FIG. 9 shows an impact attenuating device in operating position from above
  • FIG. 10 shows section D-D in FIG. 8, front part and traffic routing board.
  • FIG. 11 shows section E-E in FIG. 8, rear part.
  • FIG. 12 shows the rear part in operating position.
  • FIG. 13 shows section F-F in FIG. 12, rear part.
  • FIG. 14 shows a second embodiment of the extending device.
  • FIG. 15 shows a first embodiment of the connection to a vehicle.
  • FIG. 16 shows a second embodiment of the connection to vehicle.
  • FIG. 1 discloses an impact attenuating device ( 1 ) connected to a vehicle ( 2 ), preferably a lorry.
  • the impact attenuator ( 1 ) comprises a front part ( 3 ), an attenuating device ( 4 ), a rear part ( 5 ), and an extending device ( 6 ).
  • the front part ( 3 ) is connected to the vehicle ( 2 ) in order to transfer the forces of a collision from the impact attenuating device to the vehicle during a collision.
  • the front part ( 3 ) comprises two pivot wheels ( 31 ) with suspension, and a traffic routing board ( 9 ). Between the front part ( 3 ) and the attenuating device ( 4 ), an extension device ( 6 ) is arranged.
  • the extension device ( 6 ) can be in a transport position or in an operating position. In the transport position, FIGS. 1 and 2, the extension device ( 6 ) is in an extended state and the attenuating device ( 4 ) is pushed away from the front part ( 3 ). The attenuating device ( 4 ) is connected to the front part ( 3 ) via the extension device ( 6 ).
  • the attenuating device ( 4 ) is in the shown embodiment a ring of an elastic material, but it could also be of a different construction, e.g. a metal construction with deformation zones.
  • FIG. 3 discloses the impact attenuating device during a turn.
  • the attenuating device ( 4 ) moves like a trailer.
  • the extension device ( 8 ) is connected to the attenuating device ( 4 ) via a horizontal joint ( 63 ).
  • the attenuating device ( 4 ) hangs freely between the rear part ( 5 ) and the front part ( 3 ) and is not effected be any moment, except from the effect from it's own weight. This means that the attenuating device does not have to be designed to manage the moment forces and can therefore be made lighter.
  • FIG. 4 discloses section A-A in FIG. 1.
  • the front part ( 3 ) comprises two pivot wheels ( 31 ), with suspension ( 32 ), traffic routing boards ( 33 ), and a lowered light arrow ( 34 ).
  • FIGS. 5 - 7 show different sections of the rear part.
  • FIG. 5 discloses the rear part without the collision plate ( 53 ).
  • the two transport wheels ( 52 ) are down and the two operation wheels ( 51 ) are up.
  • the transport wheels ( 52 ) are lifted before operation and are only used during transportation of the impact attenuator ( 1 ).
  • a lifting device ( 53 ) comprising hydraulic cylinders is used to lift the transport wheels ( 52 ).
  • two operation wheels ( 51 ) has been lowered down to the road way.
  • the operation wheels ( 51 ) are used.
  • FIG. 6 discloses the collision plate ( 53 ) carrying all the functions necessary, e.g. direction indicator, brake light, position light and reverse light. Furthermore, it has an uneven surface to prevent a colliding vehicle from sliding of the collision plate and continuing along the impact attenuator.
  • FIGS. 8 and 9 show the impact attenuator ( 1 ) connected to a vehicle ( 2 ) in the operating position.
  • the extension device ( 6 , 61 ) is in its shortened position with the front part ( 3 ) and the attenuating device ( 4 ) pushed against each other.
  • the front part ( 3 ), attenuating device ( 4 ), and rear part ( 5 ) is a rigid extension of the vehicle ( 2 ).
  • the front part ( 3 ) and the attenuating device ( 4 ) are provided with a docking device ( 7 , 8 ).
  • FIG. 10 shows a section D-D of FIG. 8.
  • FIGS. 11 - 13 show different sections of the rear part in operating position.
  • FIG. 11 discloses the rear part ( 5 ) without the collision plate ( 52 ).
  • the two transport wheels ( 52 ) are up and the two operation wheels ( 51 ) are down.
  • the operation wheels has a pivot function, i.e. they can turn around a vertical axis, this is indicated in FIG. 11 by showing the operation wheels in different positions.
  • the operation wheels ( 51 ) are vertically adjustable by a hydraulic telescopic device ( 55 ).
  • the shown embodiment has two operation wheels ( 51 ). Another embodiment is to arrange a single operation wheel in the middle.
  • FIGS. 1 - 2 and 8 - 9 disclose a first embodiment of the extension device ( 6 ).
  • the Figs. shows an extension device ( 6 ) comprising a hydraulic telescopic device ( 61 ).
  • One end of the telescopic device ( 61 ) is connected via a vertical joint ( 62 ) to the front part ( 3 ). It is around this joint ( 62 ) the attenuating device ( 4 ) turns during transport.
  • the other end of the telescopic device ( 61 ) is connected to the attenuating device ( 4 ) via a horizontal joint ( 63 ).
  • the telescopic device ( 61 ) rests on a half circle shaped support element ( 64 ).
  • the support element ( 64 ) comprises end stops ( 65 ) in order to prevent the attenuating device ( 4 ) from hitting the front part ( 3 ) during sharp turns.
  • the FIGS. 1 - 2 and 7 disclose the impact attenuator ( 1 ) in transport position, i.e. the telescopic device ( 61 ) has moved the attenuating device ( 4 ) away from the front part ( 3 ).
  • a docking device ( 7 , 8 ) is arranged on the attenuating device ( 4 ) and the front part ( 3 ) to ensure that, in operating state, the collision forces from the rear part ( 5 ) and the attenuating device ( 4 ) is transferred to the vehicle ( 2 ).
  • FIG. 14 discloses a second embodiment of the extension device.
  • the extension device ( 6 ) comprises a hydraulic cylinder ( 100 ), via a first joint connected to the front part ( 3 ), and a second joint to a link arm ( 101 ).
  • the link arm ( 101 ) is movably connected to the front part ( 3 ) via a joint ( 102 ) and a cardan joint ( 103 ) connected to a boom ( 103 ), which is connected to the attenuating device ( 4 ).
  • the attenuation device ( 4 ) is pushed against the front part ( 3 ) as in FIGS. 8 and 9.
  • the boom ( 104 ) is lifted and pushed backwards in order to push the attenuating device ( 4 ) away from the front part ( 3 ) and thereby to the transport position.
  • FIGS. 15 and 16 disclose two different embodiments of the connection between the front part ( 3 ) and the vehicle ( 2 ).
  • the front part ( 3 ) is rigidly connected to the vehicle ( 2 ) and rolls on wheel with a pivot function.
  • the impact attenuator is first connected to the vehicles towing device ( 36 ), thereafter the force transferring beams ( 35 ) is pushed against the frame side members ( 36 ) of the vehicle, and the towing device is thereafter locked hydraulically or mechanically.
  • FIG. 16 the vehicles towing device is not used. Instead the force transferring beams ( 35 ) is directly connected to a coupling device on the side frame members ( 38 ) of the vehicle. The force transferring beams ( 35 ) is thereafter locked to the frame side members ( 36 ) with a locking device ( 38 ). Further embodiments of how to connect the front part to the vehicle are disclosed in the mentioned WO 01/87671 A1.
  • the invention described above discloses an impact attenuating device, which can hold a transport position with the attenuating device hanging freely and flexible as a trailer, and an operating position with the attenuating device connected as a stiff extension, in sideway, of the vehicle.
  • the impact attenuator does not affect the axle pressure of the vehicle, i.e. the impact attenuator carries its own weight. Therefore, a vehicle with maximum allowable axle pressure, i.e. fully loaded, can be used.
  • the invention also discloses a rear part with hoistable transport wheels and wheels without a pivot function. For safety reasons this is a better solution than prior locking of the pivot function, due to the fact that it is now impossible to drive with the pivot function in the transport position. With a locking of the pivot function, there is a possibility of signal error of human error, which may cause the locking to malfunction during transport.
  • a number of the impact attenuator device's functions are preferably controlled by hydraulic.
  • One alternative is to connect the impact attenuator to the hydraulic system of the vehicle.
  • the drawback is that the impact attenuator and the vehicle have to use the same hydraulic fluid. If several different vehicles use the impact attenuator this could be a problem.
  • a second alternative is to arrange an internal hydraulic system ( 10 ) on the impact attenuator. The system is powered by the vehicles hydraulic system, but the hydraulic fluids from the different systems are never mixed.
  • the impact attenuator according to the invention can be modified and connected to the front of the vehicle during operation, as a protection against oncoming traffic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Vibration Dampers (AREA)
  • Vehicle Body Suspensions (AREA)
  • Window Of Vehicle (AREA)
  • Body Structure For Vehicles (AREA)
  • Superstructure Of Vehicle (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Air Bags (AREA)
  • Burglar Alarm Systems (AREA)
US10/424,945 2002-12-20 2003-04-29 Impact attenuating device for vehicle Abandoned US20040120760A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0203813A SE525249C2 (sv) 2002-12-20 2002-12-20 Krockdämpande anordning för fordon
SE0203813-1 2002-12-20

Publications (1)

Publication Number Publication Date
US20040120760A1 true US20040120760A1 (en) 2004-06-24

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
US10/424,945 Abandoned US20040120760A1 (en) 2002-12-20 2003-04-29 Impact attenuating device for vehicle
US10/540,109 Abandoned US20060170228A1 (en) 2002-12-20 2003-12-19 Impact attenuating device for vehicle

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10/540,109 Abandoned US20060170228A1 (en) 2002-12-20 2003-12-19 Impact attenuating device for vehicle

Country Status (11)

Country Link
US (2) US20040120760A1 (de)
EP (1) EP1578645B1 (de)
AT (1) ATE372232T1 (de)
AU (1) AU2003289698A1 (de)
CA (1) CA2510803A1 (de)
DE (1) DE60316185T2 (de)
DK (1) DK1578645T3 (de)
ES (1) ES2293056T3 (de)
NO (1) NO325939B1 (de)
SE (1) SE525249C2 (de)
WO (1) WO2004056614A1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060151971A1 (en) * 2005-01-10 2006-07-13 Buehler Michael J Towable impact attenuator
US20080179901A1 (en) * 2007-01-30 2008-07-31 Traffix Devices, Inc. Trailer mounted crash attenuator
US20080258362A1 (en) * 2007-04-23 2008-10-23 Unrath Albert W Trailer mounted crash attenuation system
US20100003078A1 (en) * 2008-07-07 2010-01-07 National Taipei University Of Technology Anti-terror car-attack defending apparatus
CN107628142A (zh) * 2017-09-28 2018-01-26 南通威而多专用汽车制造有限公司 交通诱导防撞车
US10319227B2 (en) 2015-06-29 2019-06-11 Royal Truck & Equipment, Inc. Roadway work area safety truck
US11008717B2 (en) 2015-06-29 2021-05-18 Royal Truck & Equipment, Inc. Safety truck attachments, and methods of safety truck use
US20230092342A1 (en) * 2021-07-29 2023-03-23 Concaten, Inc. Emergency Response Barrier
WO2025214877A1 (en) * 2024-04-12 2025-10-16 Berlex I Kungälv Aktiebolag Impact attenuator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025096200A1 (en) * 2023-10-30 2025-05-08 Traffix Devices, Inc. Vehicle mounted crash attenuator

Citations (9)

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US3643924A (en) * 1970-09-24 1972-02-22 Fibco Inc Highway safety device
US4635981A (en) * 1984-10-29 1987-01-13 Energy Absorption Systems, Inc. Impact attenuating body
US4711481A (en) * 1985-10-25 1987-12-08 Energy Absorption Systems, Inc. Vehicle impact attenuating device
US5199755A (en) * 1991-04-03 1993-04-06 Energy Absorption Systems, Inc. Vehicle impact attenuating device
US5248129A (en) * 1992-08-12 1993-09-28 Energy Absorption Systems, Inc. Energy absorbing roadside crash barrier
US5697657A (en) * 1996-01-11 1997-12-16 Albert W. Unrath, Inc. Vehicle mounted crash attenuation system
US6092959A (en) * 1998-11-16 2000-07-25 Energy Absorption Systems, Inc. Method for decelerating a vehicle, highway crash cushion, and energy absorbing element therefor
US6244637B1 (en) * 2000-03-02 2001-06-12 Energy Absorption Systems, Inc. Adjustable tailgate mount for truck mounted attenuator
US6523872B2 (en) * 1997-11-24 2003-02-25 Automotive Technologies International, Inc. Damped crash attenuator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712945A (en) * 1951-08-27 1955-07-12 Peterson Alfred Draft connection for trailer with castor wheels
DK147191B (da) * 1978-08-05 1984-05-14 Fraudge Plovfab Traekkobling mellem en med en loefteindretning forsynet traktor og et af denne trukket redskab
DE2843225A1 (de) * 1978-10-04 1980-04-17 Porsche Ag Fahrzeug, insbesondere motorgetriebenes nutzfahrzeug
US5947452A (en) * 1996-06-10 1999-09-07 Exodyne Technologies, Inc. Energy absorbing crash cushion
SE522192C2 (sv) * 2000-05-17 2004-01-20 Vaegverket Produktion Krockdämpande anordning för fordon samt metod

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643924A (en) * 1970-09-24 1972-02-22 Fibco Inc Highway safety device
US4635981A (en) * 1984-10-29 1987-01-13 Energy Absorption Systems, Inc. Impact attenuating body
US4711481A (en) * 1985-10-25 1987-12-08 Energy Absorption Systems, Inc. Vehicle impact attenuating device
US5199755A (en) * 1991-04-03 1993-04-06 Energy Absorption Systems, Inc. Vehicle impact attenuating device
US5248129A (en) * 1992-08-12 1993-09-28 Energy Absorption Systems, Inc. Energy absorbing roadside crash barrier
US5697657A (en) * 1996-01-11 1997-12-16 Albert W. Unrath, Inc. Vehicle mounted crash attenuation system
US6523872B2 (en) * 1997-11-24 2003-02-25 Automotive Technologies International, Inc. Damped crash attenuator
US6092959A (en) * 1998-11-16 2000-07-25 Energy Absorption Systems, Inc. Method for decelerating a vehicle, highway crash cushion, and energy absorbing element therefor
US6244637B1 (en) * 2000-03-02 2001-06-12 Energy Absorption Systems, Inc. Adjustable tailgate mount for truck mounted attenuator

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060151971A1 (en) * 2005-01-10 2006-07-13 Buehler Michael J Towable impact attenuator
US8556286B2 (en) * 2005-01-10 2013-10-15 Energy Absorption Systems, Inc. Towable impact attenuator
US8388012B2 (en) 2005-01-10 2013-03-05 Energy Absorption Systems, Inc. Towable impact attenuator
US8136830B2 (en) 2005-01-10 2012-03-20 Energy Absorption Systems, Inc. Towable impact attenuator
US20110089668A1 (en) * 2005-01-10 2011-04-21 Buehler Michael J Towable impact attenuator
US7874572B2 (en) * 2005-01-10 2011-01-25 Energy Absorption Systems, Inc. Towable impact attenuator
US7802829B2 (en) 2007-01-30 2010-09-28 Traffix Devices, Inc. Trailer mounted crash attenuator
US20100019517A1 (en) * 2007-01-30 2010-01-28 Traffix Devices, Inc. Trailer mounted crash attenuator
US9156320B2 (en) 2007-01-30 2015-10-13 Traffix Devices, Inc. Trailer mounted crash attenuator
US20110049838A1 (en) * 2007-01-30 2011-03-03 Traffix Devices, Inc. Trailer mounted crash attenuator
US8276956B2 (en) 2007-01-30 2012-10-02 Traffix Devices, Inc. Trailer mounted crash attenuator
US20080179901A1 (en) * 2007-01-30 2008-07-31 Traffix Devices, Inc. Trailer mounted crash attenuator
US8702137B2 (en) 2007-01-30 2014-04-22 Traffix Devices, Inc. Trailer mounted crash attenuator
US7604268B2 (en) * 2007-04-23 2009-10-20 Tma Acquisition, Llc Trailer mounted crash attenuation system
US20090058110A1 (en) * 2007-04-23 2009-03-05 Tma Acquisition, Llc Trailer mounted crash attenuation system
US7441817B1 (en) * 2007-04-23 2008-10-28 Tma Acquisition, Llc Trailer mounted crash attenuation system
US20080258362A1 (en) * 2007-04-23 2008-10-23 Unrath Albert W Trailer mounted crash attenuation system
US20100003078A1 (en) * 2008-07-07 2010-01-07 National Taipei University Of Technology Anti-terror car-attack defending apparatus
US10319227B2 (en) 2015-06-29 2019-06-11 Royal Truck & Equipment, Inc. Roadway work area safety truck
US11008717B2 (en) 2015-06-29 2021-05-18 Royal Truck & Equipment, Inc. Safety truck attachments, and methods of safety truck use
CN107628142A (zh) * 2017-09-28 2018-01-26 南通威而多专用汽车制造有限公司 交通诱导防撞车
US20230092342A1 (en) * 2021-07-29 2023-03-23 Concaten, Inc. Emergency Response Barrier
US11948477B2 (en) * 2021-07-29 2024-04-02 Concaten, Inc. Emergency response barrier
WO2025214877A1 (en) * 2024-04-12 2025-10-16 Berlex I Kungälv Aktiebolag Impact attenuator

Also Published As

Publication number Publication date
US20060170228A1 (en) 2006-08-03
DK1578645T3 (da) 2008-01-21
NO325939B1 (no) 2008-08-18
DE60316185D1 (de) 2007-10-18
WO2004056614A1 (en) 2004-07-08
NO20053418L (no) 2005-09-16
ATE372232T1 (de) 2007-09-15
SE0203813D0 (sv) 2002-12-20
DE60316185T2 (de) 2008-06-05
SE525249C2 (sv) 2005-01-11
EP1578645A1 (de) 2005-09-28
ES2293056T3 (es) 2008-03-16
SE0203813L (sv) 2004-06-21
EP1578645B1 (de) 2007-09-05
AU2003289698A1 (en) 2004-07-14
NO20053418D0 (no) 2005-07-14
CA2510803A1 (en) 2004-07-08

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AS Assignment

Owner name: VAGVERKET, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CARLSSON, ARNE;REEL/FRAME:014018/0945

Effective date: 20030424

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION