WO1999063181A1 - Assembly device for fixing means for a strip of roofing material - Google Patents
Assembly device for fixing means for a strip of roofing material Download PDFInfo
- Publication number
- WO1999063181A1 WO1999063181A1 PCT/DE1999/001666 DE9901666W WO9963181A1 WO 1999063181 A1 WO1999063181 A1 WO 1999063181A1 DE 9901666 W DE9901666 W DE 9901666W WO 9963181 A1 WO9963181 A1 WO 9963181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mounting device
- magazine
- fastening
- roofing membrane
- roof
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D15/00—Apparatus or tools for roof working
- E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D15/00—Apparatus or tools for roof working
- E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
- E04D2015/042—Fixing to the roof supporting structure
- E04D2015/047—Fixing to the roof supporting structure by screwing
Definitions
- the invention relates to a mounting device for a fastening means for a roofing membrane, the fastening means having a holding element, a fastening element and a cover element, the mounting device carrying holding elements in a first magazine and fastening elements in a 'second magazine, and a first discharge unit for removing a holding element the first magazine and a first device with which the holding element can be deposited on the top of the roofing membrane in the position provided for the fastening means, and wherein the mounting device is a setting device movable in an approximately perpendicular to the top of the roofing membrane moving path for anchoring the fastening element and has a second device with which the fastening element can be introduced into the movement path of the setting device.
- Such a mounting device is known from EP 0 292 604 A2.
- This mounting device is designed for elongated holding elements, with a single holding element being removed from a first magazine by means of a turnout unit designed as a turntable and brought into the mounting position below the setting device by means of a slide.
- a similar assembly device which additionally has a device for locating a raised bead on a support structure made of profiled steel sheet, is described in DE 36 26 586 AI.
- roofing sheets installed on the roof of a building are to be mechanically fastened to the supporting structure of the roof with fastening means so that the roofing sheets do not pass through Wind loads can be lifted off the roof.
- the fastening means are usually arranged in fastening rows running parallel to the edges of the roofing membrane and, if necessary, covered by an adjacent roofing membrane. The total number of fasteners required is calculated individually for each roof, taking into account the expected wind loads.
- a roof surface can be designed differently with regard to its shape and size as well as the number and arrangement of roof structures, there is a special arrangement of the fastening means for each roof, in which a different number of fastening means is to be provided in the individual areas of the roof in accordance with the building regulations; for example, per square meter of roof area
- the distance between the fastening rows is reduced in areas which require a large number of fastening means, that is to say in the corner and edge areas of the roof, as a result of which an increased number of these areas
- Fastening rows results.
- the distance between the fasteners within a row of fasteners can be adjusted within certain limits to the number of fasteners required per square meter. A distance of more than 50 cm as well as a distance of less than 15 cm should be avoided.
- DE 42 05 140 Cl discloses a fastening means with a holding element, a fastening element and a cover element.
- the fastening element can be plugged through the holding element, and the cover element can be plugged onto the fastening element.
- the cover element covers the holding element and the through hole caused by the fastening element in the roofing membrane.
- the object of the present invention is to provide a mounting device which allows a fast and simple mounting of a fastening means which, in addition to a holding element and a fastening element, additionally has a cover element which is to be connected to the roofing membrane in a watertight manner.
- an assembly device which has a third magazine for cover elements, a third discharge unit for removing a cover element from the third magazine and a third device with which the cover element in the same position in the
- Movement path of the setting device can be introduced to apply the cover element with the setting device, and that the mounting device has a welding device for welding the cover element to the roofing membrane.
- the assembly device is positioned so that the holding element is in the position provided for the fastening means by the first device the top of the roofing membrane can be put down. Then the fastener is inserted by the second device in the same position above the holding element in the path of movement of the setting device, so that the setting device in the fastener
- the fastening element causes a through hole in the roofing membrane, which is subsequently sealed by a cover element.
- the cover element is in turn introduced into the movement path of the setting device by the third device in the same position of the fastening means, prepared for welding by the welding device and then applied by the setting device to the roofing membrane and welded to it.
- a source welding agent can be applied by the welding device to the underside of the cover element and / or to the top of the roofing membrane.
- the underside of the cover element can pass through the top side of the roofing membrane from the welding device
- the setting device then presses the cover element onto the roofing membrane, so that the welding takes place.
- the cover element is connected to the roofing membrane in a liquid-tight manner by the welding, so that the holding element of an assembled fastener pressed against the roofing membrane is protected against infiltration by capillary rainwater.
- the holding and covering elements Since only one holding element and one cover element are required when assembling a fastening means, the holding and covering elements must be able to be removed individually from their magazines. For removing a holding element from the first magazine or a cover element from the third
- a discharge unit suitable for round holding and covering elements can, for example, have two each other have opposite grippers with an approximately V-shaped cross section, which are pivotable about an axis arranged at their tip and running parallel to the top of the roof.
- the edge of a holding or a covering element lies on the legs of the grippers.
- the lower legs or the upper legs move apart. In this way, the lowest holding or covering element held between the grippers can fall out of the magazine as soon as the lower legs open, and the next holding or covering element can slide between the lower legs of the grippers as soon as the upper legs open.
- the device for the holding element and the third device for the cover element have a receptacle that can be inserted into the movement path of the setting device and can each be equipped with a holding or a covering element.
- a device for moving the receptacle can have a linear motor, for example a piston-cylinder unit or an electric actuator, which enables a reversing movement of the receptacle.
- a small-sized assembly device results when the holder of a device is moved on a circular path.
- the receptacle can be attached to a lever, the axis of rotation of which is preferably arranged approximately at right angles to the top of the roofing membrane, so that the receptacle moves on a circular path.
- the assembly device is structurally simple if the first device and the third device together have a two-armed lever which has two receptacles diametrically opposite one another.
- a particularly efficient way of working of the assembly device results when the first magazine and the third magazine are arranged diametrically opposite on the circular path of the recording.
- one receptacle can be arranged below the first magazine and the other receptacle below the third magazine, so that both receptacles can be loaded at the same time.
- the loaded receptacles can then be swiveled into the movement path of the setting device one after the other.
- a fastening element can be introduced into the movement path of the setting device in a simple manner if the second device has a second magazine for fastening elements which can be pivoted into the movement path.
- the fastening element can be pushed out of the second magazine when the setting device is lowered.
- the second magazine can then be pivoted out of the movement path of the setting device again, so that the setting device can apply the cover element in the next work step.
- a fastener cannot be anchored at any point on the supporting structure.
- the fastening means known from DE 42 05 140 Cl can only be anchored in a trapezoidal support structure due to the limited length of its fastening element in the area of the raised bead. If the setting device is carelessly positioned above the deep corrugation of the supporting structure, the relatively short fastening element can no longer penetrate the supporting structure. Such an error can be prevented if a region of the supporting structure suitable for anchoring the fastening element is located beforehand.
- the mounting device can therefore have at least one sensor for locating the supporting structure.
- the senor can detect the raised bead inductively.
- Sensitivity of the sensor can be adjustable to differentiate between the high and low beads or to adapt to the thickness of the layers resting on the supporting structure.
- the supporting structure is made of a non-ferromagnetic material, a marking which can be detected by the sensor can be provided on the supporting structure.
- the marking can be designed, for example, as a strip applied to the top of the supporting structure.
- a signal can be generated by the sensor as soon as an area of the support structure suitable for anchoring reaches the response area of the sensor.
- the fastening element can be anchored particularly easily in the supporting structure if it is designed as a self-drilling screw.
- a drilling screw can easily penetrate into a supporting structure made of trapezoidal sheet metal with its drill tip and can be anchored in the supporting structure with its threaded section.
- the self-drilling screw is tightened in the direction of the supporting structure, with its head being placed against the holding element, so that the holding element is pressed against the roofing membrane and this in turn is pressed against the layers lying on the supporting structure.
- the setting device can transmit at least one torque to the fastening element.
- the setting device can have at least one assembly tool with which the fastening element and / or the cover element can be installed.
- the cover element After anchoring the fastening element, the cover element can be connected to the holding element.
- the connection can be positive, for example
- a particularly secure connection is non-positive, for example as a screw connection.
- the torque required for screwing can be transferred from the setting device to the cover element.
- the assembly device can have a cleaning unit which removes impurities from the top of the roofing membrane before welding. Since the quality of the welded joint is also dependent on environmental influences, for example the temperature of the roofing membrane and the air humidity, the roofing membrane can be dried and / or preheated before welding.
- the mounting device can be moved particularly easily on the roof if it is designed as a vehicle. In a very simple embodiment, the mounting device is only arranged on a chassis so that it can be moved manually on the roof.
- Mounting device designed as an electric motor-driven vehicle.
- an electromotive Preferably an electromotive
- the mounting device has a drive unit that can be controlled by a control unit, and a data input unit is provided via which the control unit can at least predefine coordinates defining the geometry of the roof surface and the positions of the fasteners to be installed are so that the control unit based on the location of the mounting device on the roof and the coordinates of the position of a fastener can determine a path curve required for moving to this position and can generate the control signals required for starting the drive unit.
- the control unit is given the coordinates specific to the roof. This can be Cartesian or polar coordinates.
- the geometry of the roof surface is defined, for example, by the coordinates of the corner points and the coordinates of the corners of the roof structures on the roof surface.
- the positions of the individual fasteners on the roof surface, which are specially adapted to the roof, are also determined by their coordinates.
- the control unit is calibrated to the coordinate system.
- the assembly device is positioned at a first reference point described by its coordinates.
- the control unit knows the location of the mounting device on the roof at the first reference point.
- the assembly device is then guided to a second reference point.
- the distance covered is recorded by the control unit by means of a displacement sensor.
- the control unit can calculate the unit coordinate distance on the basis of the coordinates of the two reference points and the distance between them. Starting from the second reference point, the further workflow takes place automatically. For this purpose, the coordinates of the position for fastening means to be set are entered into the control unit.
- the control unit uses the location of the assembly device and the coordinates of the position of the next fastener to be set to determine a path curve required to approach this position.
- the position of the roof structures is automatically taken into account. Since the positioning of the setting device is no longer carried out manually, a fast and error-free arrangement of the fastening means is ensured, the distances between the fastening means in a row of fastenings also being kept exactly.
- the roofing membranes are therefore in all
- the movement of the mounting device can be monitored if it has a location determining unit with a transmitter-receiver unit, so that the location of the mounting device can be determined by communication with at least one transmitter unit serving as a fixed point.
- the transmitter unit can be a satellite positioning system, for example.
- radio transmitters can be set up on the edges of the roof surface, for example, to enable hyperbolic navigation.
- direction finder signals can also be emitted by the mounting device, which are reflected on the installed reflector units.
- Fig. 1 a Be mounted on a roof fastener
- Fig. 2 shows a mounting device according to the invention in the
- FIG. 4 the mounting device shown in Fig. 2 in section IV-IV and
- Fig. 5 shows schematically the mounting device of FIG. 2 on a roof in plan view.
- Fig. 1 is mounted on a roof 10
- Fastening means 12 shown in cross section.
- the roof 10 has a support structure 14 with a trapezoidal cross-section with deep beads 16 and raised beads 18.
- a vapor barrier layer 20, a thermal insulation layer 22 and a roofing membrane 24 are laid in succession on the supporting structure 14.
- the roofing membrane 24 is fastened to the supporting structure 14 of the roof 10 with a fastening means 12.
- the fastener 12 has a
- Holding element 26, a fastening element 28 and a cover element 30 The holding element 26 is essentially plate-shaped, a depression 32 with a passage opening 34 for the fastening element 28 being arranged in the center.
- the fastener 28 is as
- Self-drilling screw with a head 36 which can be placed on the holding element 26, a threaded section 38 and a drill bit 40.
- the holding element 26 lies on the top of the roofing membrane 24.
- the fastener 28 passes through
- Holding element 26 the roofing membrane 24, the thermal insulation layer 22, the vapor barrier layer 20 and the supporting structure 14.
- a through hole 42 and 44 is formed in the roofing membrane 24 and in the support structure 14, and that
- Fastening element 28 is anchored to the threaded section 38 in the supporting structure 14.
- the fastening element 28 is tightened toward the support structure 14 so that the head 36 rests on the holding element 26.
- the holding element 26 is thereby pressed onto the roofing membrane 24 and this in turn is pressed against the supporting structure 14 via the thermal insulation layer 22 and the vapor barrier layer 20.
- the holding element 26 is completely covered by the cover element 30.
- the cover element 30 is connected to the roof membrane 24 in a liquid-tight manner, so that the through hole 42 formed in the roof membrane 24 is sealed.
- the mounting device 46 has a housing 48 with a cylindrical dome 50 in which a setting device 52, a first device 54 for holding elements 26, a second device 56 for fastening elements 28 and a third device 58 for cover elements 30 are arranged.
- the first device 54 and the third device 58 each have a receptacle 60 or 62, which can be equipped with a holding element 26 or a cover element 30.
- the devices 54, 58 together have a two-armed lever 64 which carries the receptacles 60, 62 at its ends and can be pivoted about an axis of rotation 66 arranged at right angles to the top of the roofing membrane.
- the receptacles 60, 62 of the devices 54, 58 can therefore be moved on a circular path 68.
- the first magazine 70 contains holding elements 26, the second magazine 72 fastening elements 28 and the third magazine 74 covering elements 30.
- the receptacle 60 of the first device 54 is arranged below the first magazine 70 and the receptacle 62 of the third device 58 below the third magazine 74, so that a holding element 26 into the receptacle 60 or
- Cover element 30 can be transferred into the receptacle 62.
- the setting device 52 is arranged in the dome 50 above the circular path 68 and can be moved in a movement path 76 running at right angles to the roof path. To anchor the
- the setting device 52 has an assembly tool 78.
- the second device 56 has the second magazine 72 for fastening elements 28 which can be pivoted into the movement path 76 of the setting device 52, so that a fastening element 28 can be pushed out of the second magazine 72 by a lowering movement of the setting device 52.
- the first device 54 first introduces the receptacle 60 equipped with the holding element 26 into the movement path 76 of the setting device 52, where the holding element 26 is placed on the upper side of the roofing membrane in the position provided for the fastener.
- the receptacle 60 is then arranged again below the first magazine 70 so that it can be re-loaded.
- the second magazine 72 is now pivoted into the movement path 76 of the setting device 52 by the second device 56, and a fastening element 28 is pushed out of the second magazine 72 by a lowering movement of the setting device 52 towards the roof path.
- the deposited holding element 26 is penetrated by the fastening element 28, and from the assembly tool 78, a torque and a compressive force are transmitted to the fastening element 28, so that this successively passes through the layers lying on the supporting structure and is finally anchored in the supporting structure.
- the receptacle 62 equipped with the covering element 30 is introduced into the movement path 76 of the setting device 52 by the third device 58.
- the setting device 52 is lowered again, the cover element 30 being pressed against the holding element 26 by the assembly tool 78 and being connected to the latter.
- the assembly device 46 designed as a vehicle has two drive chains 80, 82 located opposite one another.
- the drive chains 80, 82 can be driven synchronously by an electromotive drive unit 84 for driving straight ahead and asynchronously for steering.
- the energy supply of the Drive unit 84 takes place via an accumulator 86 arranged in the rear area of assembly device 46.
- a sensor 88 is arranged in the front area of the mounting device 46, with which a sensor 88 for anchoring the
- Support structure can be located. Since the sensor 88 is moved relative to the supporting structure by the mounting device 46, a signal is generated by the sensor 88 as soon as a suitable area of the supporting structure reaches the response area of the sensor 88.
- FIG. 3 the mounting device 46 shown in Fig. 2 is shown in section III-III.
- a hot gas welding device 90 is arranged outside of the dome 50, from which a hot gas flow 92 can be generated, which can flow into the dome 50 through an outlet opening 94 below the assembly tool 76.
- a cover element 30 is transferred from the third magazine 74 into the receptacle 62 of the third device 58 and then introduced into the movement path 76 of the setting device 52.
- a hot gas stream 92 is then generated by the hot gas welding device 90, through which the underside of the cover element 30 and the top side of the roofing membrane are melted. After melting, the cover element 30 is pressed against the roofing membrane by the assembly tool 78 of the setting device 52.
- the mounting device 46 has a control unit 96, from which control signals for the drive unit 84 are generated.
- the control unit 96 is connected to a data input unit 98, via which the control unit 96 is given coordinates of a coordinate system which define the geometry of the roof surface and the positions of the fastening means to be arranged thereon. Based on the location of the mounting device 46 the roof and the predetermined coordinates of the position of a fastening means, the control unit 96 determines a path curve required to approach this position. When starting, the respective location of the
- Mounting device 46 can be determined by a location determining unit 100.
- the location determination unit 100 has a transmitter-receiver unit 104 for communication with a transmitter unit 102 serving as a fixed point, here a satellite.
- Fig. 4 the mounting device 46 shown in Fig. 2 is shown in section IV-IV.
- the two-armed lever 64 which is pivotable about the axis of rotation 66 arranged at right angles to the top of the roofing membrane
- the lever 64 is connected via a drive shaft 106 to a servo motor 108 which generates the torque required for the rotary movement of the lever 64 or the receptacles 60, 62 mounted thereon.
- the receptacles 60, 62 are arranged below the magazines 70, 74 for holding elements 26 or cover elements 30.
- the magazines 70, 74 are designed as hollow profiles in which the holding elements 26 or cover elements 30 are stacked flat one above the other.
- each magazine 70, 74 has a discharge unit 110 or 112 at its lower end.
- a discharge unit 110, 112 has two grippers 114, 116; 118, 120 on.
- the grippers 114, 116; 118, 120 are V-shaped in cross-section and are pivotably mounted about an axis 122, 124, 126, 128 arranged at their tip and running parallel to the top of the roof.
- the edge of a holding element 26 or a cover element 30 lies on the legs of the grippers 114, 116 and 118, 120, respectively.
- the grippers 114, 116 are pivoted downward toward the receptacle 60.
- the lower legs facing the receptacle 60 open so that the holding element 26 located between the grippers 114, 116 can fall out of the first magazine 70 into the receptacle 60.
- the grippers 114, 116 are then pivoted up again, the upper legs facing away from the receptacle 60 opening so that another holding element 26 can slide between the grippers 114, 116 by gravity.
- FIG. 5 schematically shows a mounting device 46 according to FIG. 2 in a top view on a roof 10.
- Roof 10 has a supporting structure 14 on which roofing sheets 130, 132, 134 are laid with overlapping longitudinal edges.
- the roofing sheets 130, 132, 134 are with
- Fastening means mechanically fastened to the supporting structure 14 of the roof 10, only the fastening means 12 being shown for the sake of a better overview.
- the position of the corner points 136, 138, 140, 142 of the roof surface 144 as well as the position of the corners 146, 148, 150, 152 of a roof structure 154 arranged on the roof surface 144 is specified in a Cartesian coordinate system and contained in a file, whereby the geometry of the Roof area 144 is defined.
- the number and arrangement of the fasteners is determined in accordance with the building regulations in accordance with the wind load calculation, so that the individual positions for
- Fasteners on roof surface 144 are defined by their coordinates and are also included in the file, such as position 160 for fastener 12.
- the mounting device 46 has a control unit 96, into which the values of the coordinates from the file are entered. At the start of work, the control unit 96 is opened calibrated the coordinate system. For this purpose, the assembly device 46 is manually positioned at a first reference point 156, the coordinates of which are stored in the control unit 96.
- the assembly device 46 is then manually guided to a second reference point 158, the coordinates of which are also stored in the control unit 96.
- Control unit 96 can use the coordinates and the measurement of the distance between the reference points 156, 158 to calculate the unit coordinate distance.
- the further workflow takes place automatically, in that the control unit 96 uses the current location of the mounting device 46 and the coordinates of the position 160 of the fastener 12 to be set next to determine a path curve 162 which is necessary for moving to the position 160 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Tents Or Canopies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL99342774A PL342774A1 (en) | 1998-06-03 | 1999-05-29 | Mounting device for a component serving to secure in place a strip of roofing material |
EP99938138A EP1084316A1 (en) | 1998-06-03 | 1999-05-29 | Assembly device for fixing means for a strip of roofing material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19824725.7 | 1998-06-03 | ||
DE1998124725 DE19824725C2 (en) | 1998-06-03 | 1998-06-03 | Mounting device for a fastener for a roofing membrane |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999063181A1 true WO1999063181A1 (en) | 1999-12-09 |
Family
ID=7869734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/001666 WO1999063181A1 (en) | 1998-06-03 | 1999-05-29 | Assembly device for fixing means for a strip of roofing material |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1084316A1 (en) |
DE (1) | DE19824725C2 (en) |
PL (1) | PL342774A1 (en) |
WO (1) | WO1999063181A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3625586A1 (en) * | 1986-07-29 | 1988-02-11 | W U K Wierig Gmbh | Process for fastening insulating-material panels and roof sheeting |
DE3626586A1 (en) | 1986-08-06 | 1988-02-11 | Fink Karl Eisfink | Refrigeration installation with heat-recovery arrangement |
EP0292604A2 (en) | 1987-05-28 | 1988-11-30 | Harald Zahn | Device for mechanically fastening roof sealing foils and insulating materials to roofs |
DE4205140C1 (en) * | 1992-02-20 | 1993-05-27 | Braas Gmbh, 6370 Oberursel, De | |
EP0600285A1 (en) * | 1992-12-03 | 1994-06-08 | Hardo- Befestigungen Gmbh | Device for screwing on fastening elements |
-
1998
- 1998-06-03 DE DE1998124725 patent/DE19824725C2/en not_active Expired - Fee Related
-
1999
- 1999-05-29 PL PL99342774A patent/PL342774A1/en not_active IP Right Cessation
- 1999-05-29 WO PCT/DE1999/001666 patent/WO1999063181A1/en not_active Application Discontinuation
- 1999-05-29 EP EP99938138A patent/EP1084316A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3625586A1 (en) * | 1986-07-29 | 1988-02-11 | W U K Wierig Gmbh | Process for fastening insulating-material panels and roof sheeting |
DE3626586A1 (en) | 1986-08-06 | 1988-02-11 | Fink Karl Eisfink | Refrigeration installation with heat-recovery arrangement |
EP0292604A2 (en) | 1987-05-28 | 1988-11-30 | Harald Zahn | Device for mechanically fastening roof sealing foils and insulating materials to roofs |
DE4205140C1 (en) * | 1992-02-20 | 1993-05-27 | Braas Gmbh, 6370 Oberursel, De | |
EP0600285A1 (en) * | 1992-12-03 | 1994-06-08 | Hardo- Befestigungen Gmbh | Device for screwing on fastening elements |
Also Published As
Publication number | Publication date |
---|---|
PL342774A1 (en) | 2001-07-02 |
DE19824725A1 (en) | 1999-12-16 |
EP1084316A1 (en) | 2001-03-21 |
DE19824725C2 (en) | 2000-05-18 |
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