EP0848118B1 - Armature de cisaillement pour dalles plates - Google Patents

Armature de cisaillement pour dalles plates Download PDF

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Publication number
EP0848118B1
EP0848118B1 EP97121730A EP97121730A EP0848118B1 EP 0848118 B1 EP0848118 B1 EP 0848118B1 EP 97121730 A EP97121730 A EP 97121730A EP 97121730 A EP97121730 A EP 97121730A EP 0848118 B1 EP0848118 B1 EP 0848118B1
Authority
EP
European Patent Office
Prior art keywords
spacer
shear reinforcement
cross
unit according
reinforcement unit
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.)
Expired - Lifetime
Application number
EP97121730A
Other languages
German (de)
English (en)
Other versions
EP0848118A2 (fr
EP0848118A3 (fr
Inventor
Klaus Fröhlich
Dirk Dr. Albartus
Robert Breloh
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.)
Leviat GmbH
Original Assignee
Halfen GmbH and Co KG
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 Halfen GmbH and Co KG filed Critical Halfen GmbH and Co KG
Publication of EP0848118A2 publication Critical patent/EP0848118A2/fr
Publication of EP0848118A3 publication Critical patent/EP0848118A3/fr
Application granted granted Critical
Publication of EP0848118B1 publication Critical patent/EP0848118B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors

Definitions

  • the invention relates to shear reinforcement for flat slabs the genus specified in the preamble of claim 1.
  • EP 0 495 334 A1 describes shear reinforcement for flat slabs described as several shear reinforcement elements, at least approximately perpendicular to the ceiling surface Has reinforcing bars with their top conically thickened ends in groups on a horizontal, rod-shaped spacers are welded. These shear reinforcement units are from above by a mesh-like bending reinforcement used, the Spacers with angled parallel to the flat ceiling level Areas on adjacent, parallel rods of the net-like Bending reinforcement and thus the reinforcement bars hold in their vertical position.
  • the prefabricated shear reinforcement units are on the Construction site ready for use without further measures. Indeed they are fixed in length, so that with the corresponding Requires shear reinforcement units different Length, so with different number of vertical Reinforcing bars must be kept ready. Moreover the units have the disadvantage that the Transport and when storing at the construction site the angled Can interlock ends and thus the removal is considerably more difficult.
  • the invention is therefore based on the task of handling to simplify the shear reinforcement units.
  • the unit is therefore included in the formwork their supporting elements on the bending reinforcement or also, depending depending on the location within the flat ceiling, on parts of the formwork supported.
  • the support elements can be retrofitted to the Spacer attached or movably connected to it his. You can transport and save space be stored so that the units are less bulky.
  • the support elements are attached to the spacer or, if they are moveable on it, brought into the support position by changing the position.
  • the cross clips attachable to the ends of the rod-shaped spacer are. This makes it possible to use standardized lengths of To produce shear reinforcement units, so to speak, by the meter, which then needs to be inserted into the Formwork can be cut. By plugging the The cross clips on the ends of the spacer then become the Shear reinforcement unit completed.
  • cross clips at any point, related to the longitudinal extension of the spacer can, it is appropriate if they are each hairpin-shaped Have clamp provided on the locking arches are in which a rod of the spacer engages.
  • the cross clasp to be provided with elongated holes.
  • the cross clips can consist of two brackets, each an eyelet for gripping a rod of the spacer have and thus pivotable about its longitudinal axis are.
  • These brackets can already be delivered Shear reinforcement unit on the bars of the spacer be installed and only when inserted into the formwork in the respective installation position can be pivoted. Because the bracket reach under the adjacent rod of the spacer, is a stable position of the unit within the formwork guaranteed.
  • Is the cross clasp with a connecting clip for two rods of the spacer it can be attached to any Position, based on the longitudinal extent of the spacer, to be assembled.
  • the spacer can consist of a single round rod, similar to the bars of the bending reinforcement.
  • the round bar can be inserted into a slot with flattened ends Intervene cross bar. If the flattening to the outside Is slightly tapered towards the end Cross clip on the end of the round rod and a clamping force thus a reliable frictional connection.
  • a particularly simple embodiment of the shear reinforcement unit is that the support elements as Pipes are running on bent ends of two Rods of the spacer can be plugged on and preferably there are held frictionally.
  • the shear reinforcement unit at four points on the reinforcement bars of the bending reinforcement supported.
  • transverse clip there is an inexpensive configuration of the transverse clip in that it consists of a flat material and with is provided with a clamp, by means of which the cross clip the spacer can be attached.
  • the bracket is preferred integrally formed on the cross clasp and has a to the spacer directed curvature, which in a Opening, recess or the like in the spacer attacks.
  • the crossbar can be stretched or one Middle section with molded on it, a V-shape include forming angles.
  • the cross clips are on the spacer by one each to the shear reinforcement elements parallel axis of rotation pivotally arranged. You can use it for storage and transport purposes Longitudinal direction of the spacer are aligned, so that there are no laterally protruding parts on the unit are.
  • the cross clips are preferably each in such a configuration attached to the ends of the spacer by means of a rivet, of a flat bar with punched out in this version Round and elongated holes is. The in regular The holes provided at intervals serve to accommodate the Rivets in various desired positions to attach the cross clips, and the elongated holes serve to improve Anchoring the flat bar in the concrete.
  • the unit 1a shows a top view of a shear reinforcement unit 1, between two parallel reinforcing bars 4 and 4 'a bending reinforcement for a flat ceiling is arranged.
  • the unit 1 includes four shear reinforcement elements 2, attached to a rod 3 serving as a spacer are.
  • a rod 3 serving as a spacer are.
  • Cross clips 5 and 5 ' At the ends 7 and 7 'of the rod 3 are Cross clips 5 and 5 ', with their respective ends 6 and 6 'are supported on the reinforcing bars 4 and 4'.
  • 1b is an enlarged view of the end 7 of the rod 3 with the transverse clasp 5 attached to it.
  • the transverse clasp is in a central section 10 5 added the end 7 of the rod 3.
  • 1c shows a view in the direction of arrow I in Fig. 1b. From this representation it can be seen that the Middle section 10 of the transverse clasp 5 is thickened and one Has slot 11 in which the end 7 of the rod 3rd is clamped. The ends 6 and 6 'of the cross clips 5 overlap the reinforcement bars 4 and 4 ', so that the Shear reinforcement unit 1 by means of the cross clips 5 on the Reinforcing bars 4 and 4 'is supported.
  • the shear reinforcement elements 2 each consist of a ribbed steel bolt 8 with head 9 formed at the upper end, attached to the rod 3 is welded. Have the lower ends of the bolts 8 also a conically widened head with which it is attached a lower bending reinforcement are attached (not shown). 1d shows the front view of the cross clip 5 as a single part.
  • FIG. 2a shows a top view of one between reinforcing bars 4 and 4 'arranged shear reinforcement unit
  • the Spacer consists of two rods 13 and 14, the with close parallel to each other.
  • Shear reinforcement elements 2 attached, and near the Ends of the rods 13 and 14 are attached to cross clips 15 and 15 ', formed from the brackets 16 shown in Fig. 2b are.
  • Such a bracket 16 consists of an elongated Arm 16 ', which at one end with a molded 16 '' eyelet is provided.
  • the brackets 16 and 17 are identical and extend 2c parallel to the longitudinal axis of the bolt 8. They are related to the longitudinal direction of the bolt 8 arranged mirror-symmetrically and around Bars 13 and 14 pivotable.
  • this forms from the two brackets 16 and 17 existing pair of brackets the cross bar 15, the arm of the bracket 17 engages under the rod 13 until over the reinforcing rod 4 is enough and rests on it.
  • the arm of the bracket 16 engages under the bar 14 and lies on the reinforcing bar 4 'on.
  • Fig. 3a shows an embodiment similar to Fig. 2a, however with a differently designed cross clasp 20.
  • This Cross clip 20 is shown as an individual part in Fig. 3b. It essentially has the shape of a bar with a thickened middle section 19, in which two elongated holes 21 and 21 'with a jagged inner contour 22 are provided.
  • the transverse clasp 20 with the Elongated holes 21 and 21 'on the ends of the rods 13 and 14 be plugged in, regardless of manufacturing tolerances with respect to the distance between the rods 13 and 14. So that the rods 13, 14 with respect to their position in the elongated holes 21 and 21 'with sufficient holding force are fixed, the jagged inner contour 22 is present.
  • FIG. 4a shows a shear reinforcement unit 1, in the case of the transverse clips 25 on the rods 13 and 14 not at the end, but attached at any chosen location are related to the longitudinal extent of the spacer.
  • the transverse clip 25 as a hairpin-shaped bracket 24 with two resilient interconnected legs 28 and 28 '. You can thereby on the rods 13 and 14 transverse to them Are slid on in the longitudinal direction, the legs 28 and 28 'are temporarily pushed apart.
  • FIG. 5a and 5b Another embodiment of a cross clasp that between two successive shear reinforcement elements 2 one Shear reinforcement unit can be attached, show Fig. 5a and 5b.
  • the cross clip 30 shown is made of a flat material formed and has at the bottom in the middle its longitudinal extent a connecting clip 31, which has two side locking openings 32.
  • To introduce the Bars 13 and 14 in the locking openings 32 becomes the cross clip 30 initially held in the longitudinal direction of the rods and with the Clip 31 inserted between them. Then the crossbar 30 rotated by 90 ° into its end position, the locking openings 32 can be temporarily expanded.
  • Fig. 6a shows end portions of finned steel bars 35 and 36, which form the spacer (Fig. 6c), and their neighboring Ends 35 * and 36 * each in opposite Directions are turned. On these bent ends 35 * and 36 * tubes 37 are attached, which are sufficient Have length to overlap the reinforcement bars 4 and 4 ', as shown in Figs. 6b and 6c.
  • the bent ends 35 *, 36 * lie in the same plane as the parallel to the reinforcing bars 4 and 4 'parts of the Bars 35 and 36.
  • the rods 35 and 36 are bent at both ends and extended by tubes 37 so that four support points are available for the shear reinforcement unit. However, it can also be sufficient at both ends of the unit 1 to provide only one extension tube 37, this two tubes 37 aligned opposite to each other are. The rods 35 then only need one of them Ends to be bent.
  • FIG. 7a shows a top view of a further embodiment a shear reinforcement unit 1, in which the shear reinforcement elements 2 are attached to a flat rod 39, transverse clips 40 are arranged at the ends thereof.
  • FIG. 7b shows the transverse clasp 40 on the Flat bar 39 attached by means of a rivet 41.
  • the flat bar 39 has slots 42 and Round holes 43 and can be cut to length by one accordingly prepunched longer material. It should be convenient at both ends of the flat bar each have a round hole 43 so that the rivet the rod ends, but optionally also in other round holes 43 can be attached.
  • the rivet connection executed so that the cross bar 40 relative to the flat bar 39 is rotatable about an axis parallel to the bolts 2 (Fig. 7c).
  • the crossbar 40 is with its ends on the Reinforcement bars 4 and 4 'supported. 7d shows a perspective view of this shear reinforcement unit 1 in the position between two longitudinal bars 4 and 4 'of Bending reinforcement.
  • the transverse clips 40 are aligned in the longitudinal direction of the flat bar 39. They will be before or after the onset of Thrust reinforcement unit 1 around the rivet 41 in its support position rotated, as indicated by dash-dotted lines in Fig. 7d is.
  • FIG. 8a is the top view of an embodiment variant 7a, in which the flat bar 39 on which the shear reinforcement elements 2 are attached to his Ends with clip-on cross clips 45 made of a flat material is provided. With these cross clips 45 is the Shear reinforcement unit 1 on the reinforcement bars 4, 4 ' on. Like the enlarged view of the band section of the Flat bar 39 in Fig. 8b and the side view in Fig. 8c show, the transverse clasp 45 runs over the flat bar 39, a section offset from the cross-clip plane as Bracket 48 - as can be seen in FIG. 8d - the flat bar 39 engages below.
  • the bracket 48 is through a stamping and embossing process molded from the material of the crossbar 45 and Section running parallel to the transverse clasp plane educated.
  • the manufacture of the bracket 48 creates in the cross bar 45 an opening 47.
  • Made of a plastic existing cross braces are injection molded manufactured.
  • the bracket 48 has a curvature 49 that provided for engagement in the round hole 43 of the flat steel is.
  • the formation of the shear reinforcement elements 2 with Bolt 8 and head 9 and their attachment to the flat bar 39 corresponds to the embodiment in Fig. 7b.
  • FIGS. 9a and 9b show an embodiment which in essentially corresponds to the example in FIGS. 8a to 8d, in contrast, only the surface shape of the cross clip is changed.
  • the cross clips are 50 substantially V-shaped, with a central portion 52 starting from two legs 51, 51 'in one Angle to the longitudinal axis of the flat bar 39 of about 45 ° extend.
  • the opening 47 is in the central section 52 and bracket 48 are provided so that the cross clips 50 can be fastened to the flat bar 39 in the same way as the cross clips 45 described above.
  • the bolts 8 of the shear reinforcement elements 2 and the bars 3, 13, 39 of the shear reinforcement unit 1 are made of steel and are welded together.
  • the cross braces can also made of steel, but there are also others Materials, especially non-metallic Materials such as plastic.
  • the exemplary embodiments described are the supporting elements in the form of cross clips or tubes covered on two levels arranged on the longitudinal extent of the spacer what usually for positioning and supporting the Shear reinforcement unit is sufficient. At long Spacers with a larger number of bolts than But shear reinforcement elements can also do more than two Cross clips arranged over the length of the spacer become.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Claims (18)

  1. Unité d'armature de cisaillement (1) pour dalles plates comprenant des éléments d'armature de cisaillement (2) sensiblement verticaux dans la position de montage de la dalle plate, qui sont fixés contre un élément d'écartement (3 ; 13, 14 ; 35, 36 ; 39), en particulier en forme de barre, qui est parallèle au plan de la dalle et qui vient en appui sur des barres d'armature (4, 4') voisines d'une armature de flexion en forme de réseau, caractérisée en ce qu'il est prévu des éléments de support (5, 15, 20, 25, 30, 37, 40, 45, 50) séparés, qui sont fixés ou à fixer ultérieurement contre l'élément d'écartement (3 ; 13, 14 ; 35, 36 ; 39), les éléments de support étant assemblés avec l'élément d'écartement (3 ; 13, 14 ; 35, 36 ; 39) pour être amenés en position d'appui sur au moins deux barres d'armature (4, 4') de l'armature de flexion, en vue de former un support ou un appui contre le basculement, ou étant amenés dans cette position par une modification de leur orientation.
  2. Unité d'armature de cisaillement selon la revendication 1, caractérisée en ce qu'il est prévu au moins deux brides transversales (5, 5', 15, 20, 25, 30, 40, 45, 50) formant les éléments de support, qui sont destinées à être assemblées avec l'élément d'écartement (3 ; 13, 14 ; 39), à distance l'une de l'autre - par rapport à l'axe longitudinal de celui-ci.
  3. Unité d'armature de cisaillement selon la revendication 2, caractérisée en ce que les brides transversales (5, 5', 15, 20) peuvent être enfichées sur les extrémités de l'élément d'écartement (3, 13, 14).
  4. Unité d'armature de cisaillement selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'écartement (13, 14, 35, 36) est formé par deux barres parallèles à section ronde.
  5. Unité d'armature de cisaillement selon l'une quelconque des revendications 2 à 4, caractérisée en ce que la bride transversale (25) comporte une agrafe (24 en forme d'épingle à cheveux, dont les branches (28, 28') comportent des courbures convexes de blocage (26, 26', 27, 27') pour chacune des barres (13, 14) de l'élément d'écartement.
  6. Unité d'armature de cisaillement selon la revendication 3 ou 4, caractérisée en ce que la bride transversale (20) est munie de trous oblongs (20, 21') à enficher sur chacune des barres (13, 14) de l'élément d'écartement.
  7. Unité d'armature de cisaillement selon la revendication 6, caractérisée en ce que les trous oblongs (21, 21') sont formés avec un contour intérieur (22) en dents de scie.
  8. Unité d'armature de cisaillement selon la revendication 4, caractérisée en ce que la bride transversale (15) est formée par deux étriers (16 et 17), qui sont munis chacun d'une boucle (16'') destinée à recevoir l'extrémité d'une barre (13, 14) de l'élément d'écartement, et en ce que les étriers (16 et 17) s'engagent chacun en dessous de la barre (13, 14) respectivement voisine et, dans la position de montage de l'unité d'armature de cisaillement, s'étendent jusqu'au-dessus de la barre d'armature (4, 4') respectivement voisine de l'armature de flexion.
  9. Unité d'armature de cisaillement selon l'une quelconque des revendications 2 à 4, caractérisée en ce que la bride transversale (30) est munie d'un clip d'assemblage (31), dans lequel peuvent être bloquées les barres (13 et 14) de l'élément d'écartement, de préférence dans une direction parallèle à la bride transversale (30).
  10. Unité d'armature de cisaillement selon la revendication 3, caractérisée en ce que l'élément d'écartement (3) est une barre aplatie aux deux extrémités (7, 7'), qui s'engagent dans une fente (11) de la bride transversale (5, 5').
  11. Unité d'armature de cisaillement selon la revendication 1, caractérisée en ce que les éléments de support sont des tubes (37), qui peuvent être enfichés sur des extrémités (35*, 36*) coudées de l'élément d'écartement (35) et peuvent y être maintenus de préférence au moyen d'un assemblage par adhérence.
  12. Unité d'armature de cisaillement selon la revendication 2 ou 3, caractérisée en ce que les brides transversales (45, 50) sont réalisées dans un matériau plat et sont munies d'une pince (48), par laquelle les brides transversales (45, 50) peuvent être assemblées à l'élément d'écartement (39).
  13. Unité d'armature de cisaillement selon la revendication 12, caractérisée en ce que la bride transversale (50) comporte une zone centrale (52) contre laquelle sont formés des coudes (51, 51') pour obtenir la forme d'un V.
  14. Unité d'armature de cisaillement selon la revendication 2, caractérisée en ce que la bride transversale (40) est destinée à être montée contre l'élément d'écartement (39) de manière pivotante autour d'un axe de rotation parallèle aux éléments d'armature de cisaillement (2), la bride transversale (40) étant, de préférence, assemblée à l'élément d'écartement (39) au moyen d'un rivet (41).
  15. Unité d'armature de cisaillement selon la revendication 14, caractérisée en ce que l'élément d'écartement (39) est une barre plate, dans laquelle sont découpés des trous circulaires et oblongs (42, 43).
  16. Unité d'armature de cisaillement selon la revendication 13, caractérisée en ce que la pince (48) est munie d'une courbure convexe (49) qui, dans la position de montage, entre en prise dans un trou circulaire (43) de la barre plate (39).
  17. Unité d'armature de cisaillement selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'écartement (3, 13, 14, 35, 36, 39) est réalisé en acier et est assemblé par soudage aux éléments d'armature de cisaillement (2).
  18. Unité d'armature de cisaillement selon l'une quelconque des revendications 2 à 17, caractérisée en ce que la bride transversale (5, 5', 15, 20, 25, 30, 40, 45, 50) est réalisée en matière plastique.
EP97121730A 1996-12-12 1997-12-10 Armature de cisaillement pour dalles plates Expired - Lifetime EP0848118B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29621543U 1996-12-12
DE29621543U DE29621543U1 (de) 1996-12-12 1996-12-12 Schubbewehrung für Flachdecken

Publications (3)

Publication Number Publication Date
EP0848118A2 EP0848118A2 (fr) 1998-06-17
EP0848118A3 EP0848118A3 (fr) 1999-02-03
EP0848118B1 true EP0848118B1 (fr) 2003-05-21

Family

ID=8033169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121730A Expired - Lifetime EP0848118B1 (fr) 1996-12-12 1997-12-10 Armature de cisaillement pour dalles plates

Country Status (3)

Country Link
EP (1) EP0848118B1 (fr)
AT (1) ATE241060T1 (fr)
DE (2) DE29621543U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29807557U1 (de) * 1998-04-30 1999-09-09 Schöck Bauteile GmbH, 76534 Baden-Baden Bauelement zur Schubbewehrung
DE202007018210U1 (de) * 2007-12-28 2008-03-13 Deutsche Kahneisen Gesellschaft Mbh Stahlbetonbauelement mit Queranker

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH388585A (de) * 1961-10-09 1965-02-28 Salm Mathias Fixierschiene für kreuzweise zu verlegende Armierungseisen
CH400510A (de) * 1961-11-02 1965-10-15 G K N Reinforcements Limited Zugglied zur Verwendung in vorgespanntem Beton
FR1424600A (fr) * 1964-12-16 1966-01-14 élément de liaison pour fers d'armatures et son procédé d'utilisation
CH420559A (de) * 1965-03-08 1966-09-15 Armex Bauelemente Peter Gander Distanzhalter für stehende Stahldrahtnetze im Eisenbetonbau
AT267824B (de) * 1965-07-20 1969-01-10 Baustahlgewebe Gmbh Vorrichtung zur Sicherung der gegenseitigen Lage von Bewehrungsmatten
DE1658815A1 (de) * 1967-05-10 1971-02-11 Jakob Degen In eine Stahlbetonwand quer zu deren Verlaufsrichtung einzugiessender,zum Aufbau eines standfesten raeumlichen Bewehrungsgitterwerks dienender Gitterstaender
FR1601022A (fr) * 1968-10-31 1970-08-03
AU5983673A (en) * 1973-08-08 1975-03-06 Brown L Reinforcement bar spreader
DE8025287U1 (de) * 1980-09-20 1981-02-19 Hugo Fibelkorn Kunststofftechnik Formen- Und Werkzeugbau, 5628 Heiligenhaus Drahtmattenverbinder
CH683545A5 (de) * 1991-01-18 1994-03-31 Thomas Moesch Schubbewehrung für Flachdecken.
GB9205822D0 (en) * 1992-03-18 1992-04-29 Metal Bond Tech Ltd Continuity coupling

Also Published As

Publication number Publication date
ATE241060T1 (de) 2003-06-15
DE29621543U1 (de) 1998-04-09
EP0848118A2 (fr) 1998-06-17
EP0848118A3 (fr) 1999-02-03
DE59710117D1 (de) 2003-06-26

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