EP0898675A1 - Fourreau mural avec unite d'etancheite en forme de pot - Google Patents

Fourreau mural avec unite d'etancheite en forme de pot

Info

Publication number
EP0898675A1
EP0898675A1 EP98910738A EP98910738A EP0898675A1 EP 0898675 A1 EP0898675 A1 EP 0898675A1 EP 98910738 A EP98910738 A EP 98910738A EP 98910738 A EP98910738 A EP 98910738A EP 0898675 A1 EP0898675 A1 EP 0898675A1
Authority
EP
European Patent Office
Prior art keywords
wall
counter
unit
sealing
bushing according
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Withdrawn
Application number
EP98910738A
Other languages
German (de)
English (en)
Inventor
Werner Schneider
Peter Schilhart
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.)
Doyma GmbH and Co
Original Assignee
Doyma GmbH and Co
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 Doyma GmbH and Co filed Critical Doyma GmbH and Co
Publication of EP0898675A1 publication Critical patent/EP0898675A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/08—Sealing by means of axial screws compressing a ring or sleeve

Definitions

  • the invention relates to a wall bushing according to the preamble of claim 1.
  • the implementation through external building walls requires special sealing measures to prevent moisture from penetrating into the masonry and the interior of the building.
  • the lines in the wall bushing should also be held securely against small axial forces. Axial securing against large axial forces is also of particular importance for gas lines.
  • the gas line should be axially fixed in the wall opening in such a way that if the gas line is accidentally pulled out by an excavator during, for example, earthworks carried out outside the building, the gas line does not break inside the building and the gas does not break there with the then possible negative consequences.
  • wall bushings are used for this purpose, which can be inserted into the wall opening provided for the duct (s).
  • those wall bushings in which a sealing package is inserted directly into the wall opening which seals both against the wall opening and against the line and fixes the line against small axial forces.
  • bushings are known which comprise a so-called casing tube which is used to line the wall opening. In the interior of the casing, a sealing package is then again provided, which effects a seal on the inner wall of the casing as well as on the line that is carried out and also fixes it against small axial forces.
  • This seal package consists of an elastic sealing ring which can be inserted into the wall opening and can be axially pressed there by a tensioning device.
  • the tensioning device is formed by two flange plates, each of which has an outer diameter corresponding to the inner diameter of the wall opening and which sandwich the sealing ring between them. Threaded bolts are firmly attached to one flange plate, which penetrate the sealing ring and the other flange plate. Nuts can be attached to the ends of the threaded bolts that protrude freely beyond the other flange plate.
  • the sealing ring When the nuts are tightened, the sealing ring is pressed axially so that it expands radially both inwards and outwards. In this way, on the one hand, the line carried through in the bushing and, on the other hand, the bushing itself in the wall opening is secured and sealed against small axial forces.
  • This known bushing has only a very small axial length, so that with conventional outer wall thicknesses two bushings of this type have to be used so that the pipes passed through are not seated on the inner surface of the wall opening.
  • the known bushing cannot be inserted into the wall opening beforehand and the lines can only be carried out later, since the bushing is not axially fixed relative to the inner surface of the wall opening if the sealing ring is not tensioned. From the German utility model 90 1 2 624 a further known wall bushing emerges, which has a similar structure to the wall bushing known from the German patent 38 28 693.
  • one of the flange plates has a larger outside diameter than the inside diameter of the wall opening.
  • This flange plate rests against a wall side, so that the wall bushing always assumes a predetermined axial position in the wall opening during assembly.
  • this known wall bushing also has only a small axial length, so that the same disadvantages with regard to the assembly effort are present as in the bushing known from German Patent 38 28 693.
  • Anchor unit and counter-tensioning unit Due to the anchoring unit holding the sealing means in the area of one end of the wall opening and the counter-tensioning unit which can be arranged in the area of the other end, which can be tensioned together by means of common tensioning means, there is the possibility that with two support devices for the at least one line to be carried out - Anchor unit and counter-tensioning unit - the process of bracing for sealing and axially fixing the implementation in the wall opening only has to be carried out from one side, preferably from the inside of the building. This saves considerable assembly effort with a good seal.
  • the sealing means In order to enable adaptation to the different sealing requirements in the area of the inner surface of the wall opening and in the area of the at least one line to be carried out, it has proven to be expedient for the sealing means to have at least one first seal which seals the at least one line to be passed through and at least one separately from this provided second seal sealing the inner surface of the wall opening, which can be clamped via the clamping means common to the anchor unit and the counter-clamping unit.
  • the anchor unit can be constructed in very different ways. It has proven to be advantageous if the anchor unit has a sealing pot which can be inserted into the wall opening and can be axially fixed there with at least one line opening for receiving the at least one first seal which seals the line to be carried out and a pressure element with at least one line opening which has the first seal presses against the bottom of the sealing cup when clamping the clamping device.
  • the bushing has an axial fixed point during assembly, by means of which the sealing cup can be fixed axially at least in the direction of the counter-clamping unit. This also facilitates assembly in such a way that the wall leadthrough, for example, only has to be inserted from the outside of the building into the opening in the wall until the flange bears against the outside of the wall. Any adjustment work for axial alignment is then no longer necessary, as is the case, for example, with the wall bushing known from German Patent 38 28 693.
  • the flange has a preferably annular recess on its side facing the wall for receiving the second seal.
  • the second seal can be arranged on the outer peripheral surface of the sealing pot. This can be done regardless of the arrangement of a second seal between the flange of the sealing pot and the wall surface or in combination with this. In this case, it has proven to be advantageous if the second seal is formed by a sealing ring which is L-shaped in cross section. There is also the possibility that the second seal is formed by a permanently elastic sealing compound which can be introduced during assembly into the gap between the inner surface of the wall opening and the anchor unit and / or into the recess in the flange, for example by spraying.
  • the embodiments of the wall bushing according to the invention explained above further enable the bushing to be inserted into the wall opening before the at least one line to be installed is installed.
  • the line When the line is installed, it is only led through the wall opening and the wall duct, for example from the outside of the building, and then the wall duct is only braced from the inside of the building.
  • the line can then be passed through without further ado, since the first seal which seals the line to be passed through is not yet braced and is thus expanded radially inwards.
  • the wall bushing is fixed in its axial position during assembly of the line, in particular by the flange of the sealing cup of the anchor unit.
  • the counter clamping unit can also be constructed in very different ways.
  • the counter-tensioning unit is formed by a counter-tensioning plate spanning the wall opening with at least one line opening, on the outside of which the tensioning means are accessible.
  • the counter-tensioning unit can be formed by a pot with a flange overlapping the wall opening, which can be inserted into the front end of the wall opening opposite the anchor unit. If the pot has essentially the same geometric dimensions as the sealing pot of the anchor unit, the sealing pot of the anchor unit can also be used for the counter-tensioning unit.
  • a pot for the counter clamping unit it has proven to be expedient for a simple execution of the assembly work if the clamping means protrude beyond the pot or at least reach the height of the flange of the pot.
  • the counter-tensioning unit is designed with an externally accessible measuring and / or adjusting surface.
  • the measuring and / or adjustment surface can be formed by a flattening, in particular when the counter-tensioning unit has a circular cylindrical shape.
  • a piece of pipe is provided for this purpose, at the two front ends of which corresponding pipelines can be connected, which passes through the counter-tensioning unit and is fixedly connected thereto, preferably by welding.
  • a duct that is passed through, in particular a gas duct inside the building it is often necessary for a duct that is passed through, in particular a gas duct inside the building, to assume a certain angle after exiting the wall duct.
  • the pipe section assumes a defined position with respect to the measuring and / or adjustment surface.
  • the counter-tensioning unit can preferably be fixed to the wall by screws.
  • the wall bushing according to the invention can thus be secured against torques acting on it.
  • the clamping means can also be designed in very different ways. It has proven to be advantageous if the clamping means are formed by at least one, preferably four threaded bolts, by means of which the anchor unit and the counter-clamping unit can be clamped against one another.
  • the at least one threaded bolt can be connected to the pressure element, pass through the sealing cup and project over the counter-tensioning unit for tensioning with preferably a nut.
  • the connection between the pressing element and the threaded bolt can be non-detachable, for example by welding, or detachable.
  • the latter can be achieved, for example, by forming the threaded bolt at its free end with a flange which, on the side of the pressing element facing away from the counter-tensioning unit, bears against the opening for the threaded bolt passing through the pressing element. Since the length of the threaded bolt or bolts must be adapted to the different axial lengths of different wall openings, a detachable connection between the pressing element and the threaded bolt enables a modular system to be constructed in such a way that the anchor and counter-tensioning unit are used unchanged for given internal diameters of wall openings , but only differently long threaded bolts are used for the differently long openings in the wall openings with this inside diameter.
  • the clamping means can reach a considerable length depending on the axial length of the wall opening. It can then be difficult to thread the clamping means into the openings of the counter clamping unit provided for them.
  • a guide unit for guiding and aligning the tensioning means is provided between the anchor unit and the counter-tensioning unit.
  • the guide unit also ensures the relative position of these in relation to one another in the case of a plurality of clamping devices and prevents the anchor unit from tilting together with the clamping device or devices and thereby making assembly more difficult.
  • the guide unit can be formed by a ring which is preferably adapted to the inside diameter of the wall opening and which has guide openings for the clamping means in accordance with the number of clamping means. Threading the clamping device into the openings of the counter Clamping unit is facilitated if the guide unit is arranged close to the counter-clamping unit in the wall opening.
  • the counter clamping unit is provided with a centering device or assembly aid.
  • the centering device itself can be formed by a wide variety of configurations. It has proven to be advantageous if the centering device is formed by two pins which protrude from the side of the counter-tensioning unit which points towards the anchor unit essentially perpendicularly from the latter.
  • a further preferred embodiment of the invention is characterized in that at least one pipe piece is arranged on the pressure element, to which a pipe for receiving a line can be fastened.
  • a pipe for receiving a line can be fastened.
  • an empty pipe can be pushed over the pipe section in order to connect the empty pipe to the pipe section.
  • a cable can be arranged inside the empty pipe.
  • the pipe section is expediently firmly connected to the pressure element, e.g. welded.
  • wall bushing according to the invention can also be used with a casing.
  • the statement “inner surface of the casing” occurs instead of the phrase “inner surface of the wall opening”.
  • Figure 1 shows a longitudinal cross section through a wall with a wall bushing according to the invention according to a first embodiment
  • Figure 2 is a plan view of the wall bushing shown in Figure 1 in
  • Figure 3 is a plan view of the wall bushing shown in Figure 1 in
  • Figure 4 shows a longitudinal cross section through a wall bushing according to the invention according to a second embodiment
  • Figure 5 is a plan view of the wall bushing shown in Figure 4 in
  • Figure 6 is a view of a guide unit
  • Figure 7 is a sectional side view and a plan view of an in
  • Figure 8 is a sectional side view of another invention
  • FIG. 1 shows a first exemplary embodiment of a wall bushing 10 according to the invention in an opening D with an opening axis DA of a vertically oriented wall W.
  • the wall opening D has a circular cross section.
  • an outside of the building or an outside of the wall is also designated by A and an inside of a building or an inside of a wall by I.
  • the wall bushing 10 comprises an anchor unit 20 and a counter-clamping unit 30, which are each arranged at the front ends of the wall opening D and which together with the clamping means 28 described below form a clamping device.
  • the anchor unit 20 and the counter-tensioning unit 30 support the at least one line to be carried out at two points in the wall opening D.
  • the anchor unit 20 shown in FIG. 1 at the left end of the wall opening D comprises a sealing cup 22 which has a cup section 22a and an edge section 22b forming a flange.
  • the circular pot section 22a has an outer diameter which is smaller than the inner diameter of the wall opening D.
  • the edge section 22b which is also circular and has an outer diameter larger than the inside diameter of the wall opening D, adjoins the pot section 22a in the direction of the outside A of the wall W and is angled away from it by an angle of approximately 90 °, so that it is at least approximately plane-parallel to the outside A of the wall W.
  • the edge section 22b is at its end facing the wall W. Side provided with a substantially annular recess 22ba. After assembly of the anchor unit 20, the edge section 22b therefore only sits on the wall W with its outermost circular edge, as shown in FIG. 1.
  • the pot section 22a has at least one opening 22c, through which a pipe to be passed through the wall W or, if appropriate, a similar cable can be inserted.
  • the pot section 22a is provided with two openings for the passage of pipes and two openings for the passage of cables, which are each arranged at an angle of 90 ° in such a way that the two pipe openings in lie in a vertical plane, whereas the two cable openings are arranged in a horizontal plane (cf. FIG. 3).
  • the pot section 22a receives in its interior a substantially circular sealing washer 24 made of an elastic material, such as rubber, which forms a first seal for sealing the at least one line to be passed through and therefore likewise has openings for the passage of cables and / or pipes, which are formed and also arranged in accordance with the openings for cables and / or pipes of the pot section 22a. Furthermore, an essentially circular pressure plate 26 is arranged in the interior of the pot section 22a, which likewise has openings for cables and / or pipes, the number and arrangement of which correspond to those of the pot section 22a and the sealing washer 24. The sealing washer 24 is sandwiched between the bottom of the pot section 22a and the pressure plate 26.
  • the sealing disk 24 is pressed between the pressure plate 26 and the bottom of the pot portion 22a and deformed in such a way that it expands radially inwards and outwards. such a sealing takes place on the at least one line to be carried out and on the inner wall of the pot section 22a of the sealing pot 22.
  • a four clamping means 28 formed by threaded bolts in the present exemplary embodiment, which is firmly connected to the pressure plate 26 and extends at least approximately parallel to the opening axis DA through the wall opening D to the counter clamping unit 30.
  • the fastening of the threaded bolts 28 to the pressure plate 26 can be done, for example, by welding the end ends of the thread This takes place on the pressure plate 26 or by means of corresponding nuts which are screwed onto the threaded bolt 28 on the outside of the pressure plate 26 in such a way that a fixed connection between the threaded bolt 28 which enables the transmission of tensile forces at least in the direction of the counter-tensioning unit 30 is made and the pressure plate 26 is formed.
  • the outer diameter of the pot section 22a is smaller than the inner diameter of the wall opening D.
  • L-shaped sealing element 29 is used, which forms a second seal for sealing between the inner surface of the wall opening D or a possibly existing casing tube and the anchor unit 20.
  • the sealing element 29 has a jacket section 29a and an edge section 29b.
  • the casing section 29a is inserted into the wall opening D, whereas the edge section 29b is arranged in the annular recess 22ba of the edge section 22b.
  • the round section 29b of the second seal 29 bears against the outside A of the wall W at least approximately plane-parallel. In this way, a reliable sealing of the wall opening D to the outside is achieved.
  • the sealing element 29 can also be formed by a permanently elastic sealing compound introduced into the space described above.
  • the counter-tensioning unit 30 is formed by a counter-tensioning plate 32, which is also provided with openings for cables and / or pipes in accordance with the openings in the anchor unit 20.
  • the counter clamping plate 32 lies flat and parallel on the inside I of the wall W.
  • the one or more threaded bolts 28 are passed through the counter clamping plate 32 and fixed there by means of nuts 34 with washers.
  • a guide 40 is further provided, which is arranged in the interior of the wall opening D.
  • the guide 40 is essentially formed by a ring 42, the outer diameter of which is approximately equal to the inner diameter of the wall opening D and the inner diameter of which is larger than the space occupied by the pipes and / or cables passed through.
  • the ring 42 is provided with a plurality of openings 44 for the threaded bolts 28 (cf. FIG. 6).
  • the guide 40 can also be provided on its outer circumference with a plurality of projections 46, the outer diameter of which corresponds to the inner diameter of the wall opening D.
  • the guide 40 is inserted in the vicinity of the counter clamping unit 30 in the wall opening D, so that the long threaded bolts 28 assume a fixed position in the vicinity of the counter clamping plate 32. As a result, the counter clamping plate 32 can be pushed onto the threaded bolts 28 without difficulty.
  • the counter-clamping plate 32 has, on its upper side, in relation to FIG. 2, an edge and / or flattening 32a forming an adjustment and / or measuring surface, on which an adjustment tool, such as a spirit level, can be placed.
  • an adjustment tool such as a spirit level
  • the counter-clamping plate 32 is arranged in a predetermined position, for example with a flattening 32a oriented completely horizontally.
  • the wall bushing 10 is used to feed gas pipes that come out of the wall bushing 10 on the inside of the building, for example with a pipe bent 90 ° vertically upwards, as shown in FIG. 2 for the upper pipe.
  • This pipe section emerging vertically upwards must be aligned exactly vertically, which is easily possible due to the flattening 32a of the counter clamping plate 32.
  • the counter-clamping plate 32 can be held on the wall W by means of screws 36 which are in engagement with dowels inserted in the wall W. Due to the two screws 36 in the case of the exemplary embodiment in FIGS. 1 to 3, the counter-clamping plate 32 can, for example, in advance. be screwed to the wall W before mounting the anchor unit 20. Through the guide 40 is then at Installation of the anchor unit 20 ensures that the threaded bolts 28 can thread securely into the openings provided for them in the counter-clamping plate 32.
  • the counter-clamping plate 32 can also be screwed on after the mounting of the anchor unit 20 and the threading of the threaded bolts 28 and / or the adjustment of the counter-clamping plate 32 by means of the flattened portion 32a.
  • the latter has two centering pins 38, which form a centering device or an assembly aid (cf. FIG. 7), on the sides of the counter-tensioning unit 30, 30' in which face the anchor unit 20 are mounted in such a way that they protrude substantially perpendicularly from the surface of the counter clamping unit 30, 30 '.
  • the two centering pins 38 are arranged in the lower third of the circle formed by the counter-tensioning unit 30 in relation to FIG. 7.
  • the centering pins 38 engage in the wall opening D, support the counter clamping unit 30, 30 'and thereby center the counter clamping unit 30, 30' in the wall opening D.
  • a piece of pipe R is fixedly attached to the counter clamping plate 32.
  • the fixed attachment can be done, for example, by a welded connection.
  • the welded connection can be provided on both sides of the counter clamping plate 32 or only on one side, for example on the outward-facing side of the counter clamping plate 32 (visual inspection).
  • the pipe section R has corresponding connection options at its two ends, so that the gas line leading into the building and the gas line running in the building can be connected to the pipe section R. If the gas line is now pulled in such a way that it breaks, this takes place, based on FIG. 1, to the left of the counter-tensioning unit 30, ie. on the outside of the building, and not, also in relation to FIG. 1, to the right of the counter clamping unit 30, ie. inside the building.
  • a water pipe is led out at the other opening for pipes, which is bent vertically downwards by 90 °.
  • a metallic material such as steel can be used for the sealing cup 22, the pressure plate 26 and the counter clamping plate 32.
  • the second exemplary embodiment of a wall bushing 10 'according to the invention shown in FIGS. 4 and 5 differs from the wall bushing 10 shown in FIGS. 1 to 3 in that the counter-tensioning unit 30' is likewise designed with a pot 32 'which is configured in a similar manner is like the sealing cup 22 of the anchor unit 20 of the first wall bushing 10.
  • the threaded bolts 28 are fixed here by means of long hexagon nuts 34 ', which due to their length can be operated from the outside without difficulty. Possibly.
  • a seal can also be arranged between the outer circumferential side of the pot 32 'of the counter-tensioning unit 30' and the inner surface of the wall opening D in the same way as in the anchor unit 20 of FIGS. 1 to 3.
  • the further wall bushing shown in FIG. 8 is essentially similar to the wall bushing according to FIG. 1, so that the same reference numerals have been used for the same parts and reference is made to the above descriptions.
  • the wall bushing shown in Fig. 8 differs from that shown in Fig. 1 in that on the pressure element 26 a pipe section R by e.g. Weld is attached and protrudes outward from the pressure element 26.
  • a central axis of the essentially cylindrical pipe section R is aligned with a longitudinal axis of a cable to be carried out with the aid of the wall leadthrough, which is passed sealingly through the sealant 24 in the assembled state.
  • An empty pipe is pushed over the pipe section R and with it in a permanent but detachable connection. The empty pipe is used to hold the cable, line or the like to be passed through and can be laid, for example, in the ground.
  • lines of various types can be passed through, for example supply lines for water, gas or the like or power cables or so-called empty pipes for receiving a line arranged inside.
  • a further sealing insert can be arranged within the empty pipe in a manner not shown for sealing the line arranged in the empty pipe, said sealing insert having an elastic sealing element which seals in the assembled state against the inner surface of the conduit and the outer surface of the conduit passed through.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

Fourreau mural (10) qui présente des éléments d'étanchéité (24, 29) placés contre la surface interne d'un trou (D) mural, ainsi qu'au moins une conduite traversante et un dispositif de tension (20, 30, 28) destiné à fixer le fourreau (10) dans le trou (D) mural. Selon la présente invention, le dispositif de tension (20, 30, 28) comporte une unité d'ancrage (20) qui maintient les éléments d'étanchéité (24, 29) et qui est placée sur une extrémité du trou (D) mural et une unité de contre-tension (30, 30') placée sur l'autre extrémité, ces deux unités étant reliées l'une à l'autre par un moyen de tension (28) commun.
EP98910738A 1997-03-10 1998-03-09 Fourreau mural avec unite d'etancheite en forme de pot Withdrawn EP0898675A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1997109705 DE19709705A1 (de) 1997-03-10 1997-03-10 Wanddurchführung mit topfförmiger Dichtungseinheit
DE19709705 1997-03-10
PCT/EP1998/001352 WO1998040654A1 (fr) 1997-03-10 1998-03-09 Fourreau mural avec unite d'etancheite en forme de pot

Publications (1)

Publication Number Publication Date
EP0898675A1 true EP0898675A1 (fr) 1999-03-03

Family

ID=7822783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98910738A Withdrawn EP0898675A1 (fr) 1997-03-10 1998-03-09 Fourreau mural avec unite d'etancheite en forme de pot

Country Status (3)

Country Link
EP (1) EP0898675A1 (fr)
DE (1) DE19709705A1 (fr)
WO (1) WO1998040654A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051722A1 (de) * 2004-10-23 2006-04-27 Schierjott, Günter, Dr.techn. Druckeinrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808689C3 (de) * 1968-11-13 1975-11-13 Erik Aarhus Groesen Jensen (Daenemark) Vorrichtung zur federnden und dichtenden koaxialen Lagerung eines glatten Leitungsrohres in einem in einer Wand verankerten Futterrohr
DE1900055B2 (de) * 1969-01-02 1971-12-02 Th. Goldschmidt Ag, 4300 Essen Verfahren zur kontinuierlichen abscheidung von technisch bleifreiem kupfer
DE3048838A1 (de) * 1980-12-23 1982-07-08 Erik Groesen 8800 Aarhus Jensen Dichtungsvorrichtung
DE3916752A1 (de) * 1989-05-23 1990-11-29 Kabelmetal Electro Gmbh Wanddurchfuehrung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9840654A1 *

Also Published As

Publication number Publication date
WO1998040654A1 (fr) 1998-09-17
DE19709705A1 (de) 1998-09-17

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