EP1558483A1 - Chassis and/or supporting structure of a motor vehicle - Google Patents
Chassis and/or supporting structure of a motor vehicleInfo
- Publication number
- EP1558483A1 EP1558483A1 EP03753546A EP03753546A EP1558483A1 EP 1558483 A1 EP1558483 A1 EP 1558483A1 EP 03753546 A EP03753546 A EP 03753546A EP 03753546 A EP03753546 A EP 03753546A EP 1558483 A1 EP1558483 A1 EP 1558483A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chassis
- vehicle
- support structure
- motor vehicle
- hollow chamber
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 238000011109 contamination Methods 0.000 claims 1
- 230000001413 cellular effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/02—Streamlining the undersurfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/17—Understructures, i.e. chassis frame on which a vehicle body may be mounted forming fluid or electrical conduit means or having other means to accommodate the transmission of a force or signal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/008—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of light alloys, e.g. extruded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
- B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Definitions
- the invention relates to a chassis and / or a support structure of a motor vehicle, in particular a passenger car, according to the preamble of claim 1.
- Chassis are common assemblies to ensure the structural strength of conventional vehicles and are accordingly widespread. They have several, mostly made of shaped steel, with fasteners, such as Screws or welding spots, connected longitudinal and cross members. In the case of motor vehicles, they are used primarily to accommodate the drive device, axles and vehicle body.
- hollow profiles are also used in some cases, but these are mostly closed for reasons of corrosion protection and are used relative to mass due to the higher section modulus of hollow profiles compared to solid profiles.
- DE 40 07 771 AI a device for suppressing the spray discharge in the wheel area of motor vehicles, in particular trucks, is known. In this case, it is provided either to lay a suction line between a side member of the vehicle chassis or between a fender and the vehicle chassis along the side members, which suction line uses the Venturi principle and reduces the spray discharge.
- a suction line between a side member of the vehicle chassis or between a fender and the vehicle chassis along the side members, which suction line uses the Venturi principle and reduces the spray discharge.
- a separately installed suction line is mentioned, nothing else is disclosed.
- the present invention is concerned with the problem of specifying an alternative design for a chassis and / or a support structure.
- the invention is based on the general idea of designing a chassis and / or a support structure of a motor vehicle as a hollow-chamber plate structure.
- a hollow-chamber panel structure In contrast to a conventional vehicle bodyshell with very few cavities (e.g. sills), the hollow-chamber panel structure creates a relatively large-area duct system, which opens up new possibilities for the air mass flows that are passed through a vehicle due to its function (e.g. cooling air, passenger compartment ventilation) to let out specifically at certain vehicle locations.
- a flow around the vehicle can be positively influenced, for example by leading part of an engine exhaust air through a hollow chamber floor to the rear of the vehicle and influencing or reducing vehicle caster there in such a way that air resistance and vehicle buoyancy are reduced, and in the case of full-rear vehicles the pollution of the rear window is reduced.
- the hollow chamber plates are designed as light metal elements and / or as plastic elements.
- Light metals and plastics are materials that are generally light in weight and easy to machine. In view of the increasingly important conservation of resources, light materials are particularly important in vehicle construction. A low overall weight enables the use of a less powerful drive device with the same driving comfort and thus enables a reduction in fuel consumption.
- the hollow chamber panels are designed as extruded profiles and / or as built profiles, in particular made of sheet metal.
- extruded profiles are easy and inexpensive to manufacture and allow individual reworking of an otherwise identical extruded basic body.
- Constructed hollow chamber profiles offer the advantage of enabling a highly individually oriented manufacture of vehicle chassis. In the case of vehicles in the high-price segment in particular, individual modifications to the vehicle chassis are often required due to customer requirements. These changes can already be taken into account in the case of built profiles and thus prevent time-consuming reworking of a standard profile.
- a particularly advantageous embodiment of the solution according to the invention is characterized in that the flow channels are designed to be controllable by flaps on an inflow or outflow opening.
- a targeted control of the air passage through the flow channels offers the advantage of certain properties of the vehicle, such as to influence the pressure of the vehicle on the surface.
- the flaps can be controlled in such a way that a higher air throughput is made possible at higher speeds than at low speeds.
- the flow channels running in the vehicle chassis and the flaps attached to the outflow openings of the flow channels as well as the shape of the inflow and outflow openings bring about effects similar to those of a spoiler, as a result of which the buoyancy of the vehicle is reduced.
- the flow through the channels can be supported by using fans.
- FIG. 1 is an oblique view of a vehicle chassis according to the invention
- Fig. 3 shows a possible course of flow channels through the vehicle chassis.
- a chassis 6 or a support structure of a motor vehicle 19, which is otherwise not shown, is designed.
- the chassis ⁇ has a plurality of plate-like individual elements, such as, for example, a hollow-chamber floor plate 1 (hereinafter also referred to simply as hollow-chamber plate 1), vertical hollow-chamber plates 4 and hollow-chamber plates 15 connecting the vertical hollow-chamber plates 4.
- the hollow chamber plates 1, 4 and 15 together with a chassis 14 form the supporting structure of the motor vehicle 19.
- the individual hollow chamber plates 1, 4, 15 are connected to one another in a suitable manner, for example by welding and / or gluing, and stiffen the chassis 6.
- a section of the hollow chamber plate 15 is shown as an example. It should be expressly mentioned that the cutout according to FIG. 2 can also be transferred to the other hollow chamber plates 1, 4 listed.
- the hollow chamber plate 15 is constructed from an upper plate 16 and a lower plate 17, which is connected by partition walls 12 which run between the upper plate 16 and the lower plate 17 orthogonal to the two plate levels. Due to the dividing walls 12, mutually separate, parallel flow channels 10, which have an essentially rectangular cross section, are produced. The number of partition walls 12 determines the number and the cross section of the individual flow channels 10.
- an air flow 5 enters the flow channel 10 through an airflow opening 2 on one side of the hollow chamber plate 15 and exits again through an outflow opening 3 on the other side. It is conceivable to use individual flow channels 10 for air flow 5, while other flow channels 10 remain unused. In addition, a deflection of the air flow 5 through an opening 13 out of the plane of the hollow chamber plate 15 is also possible, for example in order to pass it on to a vertically adjoining hollow chamber plate 4.
- the arrangement of the opening 13 is not limited to the upper or lower plate 16, 17, it can also be integrated into the partition walls 12, thereby creating a connection between the individual flow channels 10.
- the air flow 5 enters the flow channel 10 through a single inflow opening 2 and is distributed there to at least two flow channels 10 due to at least one opening 13 in the partition 12, and thus through several outflow openings 3 again from the hollow chamber plate 15 exits.
- a rapid air flow 5 at the inflow opening 2 has a significantly lower speed when it emerges from the hollow chamber plate 15 through a plurality of outflow openings 3.
- Inflow openings 2 are provided in the area of a front part of the motor vehicle 19 and in the area of the hollow-chamber floor panel 1.
- the flow channel 10 is arranged in the area of the rear vehicle wheel 22 along a wheel arch and is guided in the direction of travel after the rear vehicle wheel 22 to the height of a bumper (not shown) to the rear of the vehicle 23.
- the flow channel 10 in the area of the rear vehicle wheel 22 has an inflow opening 2 in the direction of travel after the rear vehicle wheel 22, which causes a spray mist that may occur when wet to be sucked off in the wheel arch and transported to the rear 23 of the vehicle 19 becomes.
- the air flow 5 flowing in the flow channel 10 reaches the surroundings through the outflow opening 3.
- Another flow channel 10 begins with an inflow opening 2 'under a bonnet 24 of the motor vehicle 19 and has an outflow opening 3' through which the air flow 5 reaches the passenger compartment 20.
- an inflow opening 2 ' Under a bonnet 24 of the motor vehicle 19 and has an outflow opening 3' through which the air flow 5 reaches the passenger compartment 20.
- at least one further inflow opening 2 ′′ to another flow duct 10 is arranged, which connects the passenger compartment 20 to the rear of the vehicle 23.
- This further flow channel 10 has a further outflow opening 3 ′ X at the rear of the vehicle 23. This ensures continuous and predeterminable ventilation of the passenger compartment 20.
- the predetermined arrangement of the outflow openings 3 or 3 ′′ on the rear of the vehicle 23 can reduce the pollution of the rear of the vehicle 23 and reduce the opening. t ⁇ ebs of the motor vehicle 19 can be reached. At the same time, the air vortices resulting from a flow around the motor vehicle 19 are reduced, which reduces fuel consumption.
- the construction method according to the invention can be characterized as follows:
- a large-area system of flow channels 10 is created by the support structure made of hollow chamber plates 1, 4, 15, as a result of which the air streams 5 are directed through or around the vehicle 19.
- the air resistance and vehicle lift are reduced and the pollution of the rear of the vehicle 23 is reduced.
- the hollow chamber plates 1, 4, 15 can also be designed as light metal and / or plastic elements, thereby reducing the fuel consumption.
- flaps not shown in Fig. 2 at the inflow or outflow openings 2, 3 of the flow channels 10 certain properties of the vehicle 19, such as e.g. affects the pressure of the vehicle 19 on the ground.
- the flaps attached to the outflow openings 3 or 3 ′′ of the flow channels 10 and the shape of the outflow openings 3 or 3 ′′ cause spoiler effects.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10251945 | 2002-11-08 | ||
DE10251945A DE10251945B3 (en) | 2002-11-08 | 2002-11-08 | Chassis and/or support structure for a motor vehicle, especially a car, comprises a hollow chamber plate structure designed as a channel system for aeration/ventilation of a passenger compartment |
PCT/EP2003/011299 WO2004041626A1 (en) | 2002-11-08 | 2003-10-13 | Chassis and/or supporting structure of a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1558483A1 true EP1558483A1 (en) | 2005-08-03 |
Family
ID=31197637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03753546A Withdrawn EP1558483A1 (en) | 2002-11-08 | 2003-10-13 | Chassis and/or supporting structure of a motor vehicle |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060238001A1 (en) |
EP (1) | EP1558483A1 (en) |
JP (1) | JP2006505439A (en) |
DE (1) | DE10251945B3 (en) |
WO (1) | WO2004041626A1 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005006250B3 (en) * | 2005-02-11 | 2006-08-03 | Daimlerchrysler Ag | Car body, has cut-out in wall of longitudinal chassis beam, air outlet arranged in A column, and hollow section comprising cross beam that is provided with breather hole for delivery of air from engine compartment |
DE102005011832B4 (en) * | 2005-03-15 | 2011-01-20 | Audi Ag | Air guiding device for a vehicle |
DE102005016994A1 (en) * | 2005-04-13 | 2006-10-19 | GM Global Technology Operations, Inc., Detroit | Method for reinforcing vehicle floor especially for cabriolet using a reinforcing panel with pressed profiles |
DE102005029292A1 (en) * | 2005-04-13 | 2006-10-19 | Audi Ag | Sub frame for motor vehicle, has reinforcement with triangular framework connected at corners to side members and cross member |
DE102005017031A1 (en) * | 2005-04-13 | 2006-10-19 | Audi Ag | As a subframe trained subframe for motor vehicles |
DE102005017029A1 (en) * | 2005-04-13 | 2006-10-19 | Audi Ag | As a subframe augebildeter subframe for motor vehicles |
DE102005061506B4 (en) * | 2005-12-22 | 2016-03-10 | Audi Ag | Structural part for a vehicle |
FR2902745B1 (en) * | 2006-06-21 | 2008-09-12 | Renault Sas | METHOD AND DEVICE FOR DISTURBING AN AIR FLOW IN THE WALL OF A MOTOR VEHICLE |
KR100849679B1 (en) * | 2006-09-29 | 2008-08-01 | 안승택 | The connect structure of bonnet to rise front wheel in vehicle |
DE102007036401A1 (en) | 2007-07-27 | 2009-01-29 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Double-walled partition wall for separating engine compartment and passenger compartment in vehicle with rear engine, has cooling air inlet formed in region of vehicle floor, and cooling air outlet that is opened to engine compartment |
CN101314324A (en) * | 2008-07-11 | 2008-12-03 | 朱晓义 | Pressure gas directly driven automobile |
GB2476279B (en) * | 2009-12-17 | 2016-05-25 | Gordon Murray Design Ltd | Vehicle comprising a rearwardly mounted engine and radiator |
US9370882B2 (en) * | 2010-10-22 | 2016-06-21 | Tata Technologies Pte Limited | Cost effective and efficient air circulation system for a vehicle having rotomolded body assembly |
DE102011102467A1 (en) * | 2011-05-24 | 2012-11-29 | Audi Ag | Axle carrier for a motor vehicle |
JP5879995B2 (en) * | 2011-12-09 | 2016-03-08 | トヨタ自動車株式会社 | Fluid control device |
DE102012204713A1 (en) * | 2012-03-23 | 2013-09-26 | Ford-Werke Gmbh | Loading floor and profile element for a loading floor |
JP5629739B2 (en) | 2012-09-14 | 2014-11-26 | トヨタ自動車株式会社 | Body front structure |
DE102013007628A1 (en) * | 2013-05-02 | 2014-11-06 | Audi Ag | Body for a motor vehicle |
DE102013223105A1 (en) | 2013-11-13 | 2015-05-13 | Röchling Automotive SE & Co. KG | In vehicle carrier integrated gas, especially air guiding device |
DE102016203890A1 (en) * | 2016-03-09 | 2017-09-14 | Volkswagen Aktiengesellschaft | Body structure element for a vehicle with integrated humidifier |
US10137769B2 (en) * | 2017-01-29 | 2018-11-27 | Stephen Kariniemi | Center mounted air chute for a rear mounted engine |
DE102017005904A1 (en) * | 2017-06-22 | 2018-12-27 | Audi Ag | Motor vehicle with a trunk device, boot device for a motor vehicle and method for adjusting the air flow in a motor vehicle |
JP7238812B2 (en) * | 2020-01-22 | 2023-03-14 | トヨタ自動車株式会社 | Vehicle cooling structure |
CA3120925A1 (en) * | 2020-06-05 | 2021-12-05 | Polaris Industries Inc. | Frame for an off-road vehicle |
US11027785B1 (en) * | 2021-02-03 | 2021-06-08 | Snir Golan | Aerodynamic engineering vehicle apparatus |
CN114407641A (en) * | 2021-12-29 | 2022-04-29 | 武汉理工大学 | Cooling system of intelligent automobile integrated system |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB463620A (en) * | 1935-06-28 | 1937-03-30 | Douglas Frederick Harold Fitzm | Improvements relating to motor vehicles |
DE2935324A1 (en) * | 1979-08-31 | 1981-03-12 | Helfried Dipl.-Phys. 8021 Icking Crede | Low drag car body - has air intakes in front and cooling air ducted over silencer to rear low pressure area |
US4460055A (en) * | 1980-11-03 | 1984-07-17 | Karl Steiner | System to increase vehicle fuel efficiency |
DE3114403A1 (en) * | 1981-04-09 | 1982-10-28 | Daimler-Benz Ag, 7000 Stuttgart | "MOTOR VEHICLE WITH HYDRAULIC AND / OR PNEUMATIC LINES CONNECTING THE FRONT AND REAR AREA OF THE VEHICLE" |
DE4007771A1 (en) * | 1990-03-12 | 1991-09-19 | Schmidt Alfred Ing Gmbh | DEVICE FOR SUPPRESSING THE SPRAYING LEAK OUT IN THE WHEEL AREA OF MOTOR VEHICLES, ESPECIALLY FOR TRUCKS |
JPH0692268A (en) * | 1990-07-16 | 1994-04-05 | Masanobu Yamazaki | Automobile |
DE29722344U1 (en) * | 1997-12-18 | 1999-04-15 | Ball, Wilfried, 84130 Dingolfing | Chassis for passenger cars |
SE513483C2 (en) * | 1999-09-29 | 2000-09-18 | Scania Cv Ab | Motor vehicles with front engine mounted |
DE10000032C2 (en) * | 2000-01-03 | 2002-07-18 | Mario Fester | vehicle |
DE10018236A1 (en) * | 2000-04-12 | 2001-11-08 | Max Eckert | System to clear dirt and dirty water from rear face of motor vehicle has high air pressure variable angle deflecting surface comprising rows of nozzles or slots |
ATE329817T1 (en) * | 2001-04-20 | 2006-07-15 | Carcoustics Tech Ct Gmbh | UNDERBODY PANEL |
US6637805B2 (en) * | 2001-10-19 | 2003-10-28 | Clayton B. Rees | Apparatus and method for increasing downward force exerted on a spinning vehicle |
DE20213215U1 (en) * | 2002-08-28 | 2002-11-14 | Paukner, Ernst, Dr., 82131 Gauting | Hydromechanical vehicle stabilization device with system-inherent Venturi nozzles |
-
2002
- 2002-11-08 DE DE10251945A patent/DE10251945B3/en not_active Expired - Fee Related
-
2003
- 2003-10-13 JP JP2004548741A patent/JP2006505439A/en not_active Abandoned
- 2003-10-13 WO PCT/EP2003/011299 patent/WO2004041626A1/en not_active Application Discontinuation
- 2003-10-13 EP EP03753546A patent/EP1558483A1/en not_active Withdrawn
- 2003-10-13 US US10/534,132 patent/US20060238001A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2004041626A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10251945B3 (en) | 2004-03-04 |
JP2006505439A (en) | 2006-02-16 |
WO2004041626A1 (en) | 2004-05-21 |
US20060238001A1 (en) | 2006-10-26 |
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Legal Events
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KONERMANN, MARTIN Inventor name: MOESSNER, ALEXANDER Inventor name: SCHWARZ, VOLKER |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DAIMLERCHRYSLER AG |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20070503 |