EP0056934B1 - Dispositif de fixation d'une bande flexible à une surface - Google Patents

Dispositif de fixation d'une bande flexible à une surface Download PDF

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Publication number
EP0056934B1
EP0056934B1 EP82100066A EP82100066A EP0056934B1 EP 0056934 B1 EP0056934 B1 EP 0056934B1 EP 82100066 A EP82100066 A EP 82100066A EP 82100066 A EP82100066 A EP 82100066A EP 0056934 B1 EP0056934 B1 EP 0056934B1
Authority
EP
European Patent Office
Prior art keywords
spring
elastomer
cushion
extension
clamping means
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
Application number
EP82100066A
Other languages
German (de)
English (en)
Other versions
EP0056934A3 (en
EP0056934A2 (fr
Inventor
Ralf Ing. Grad. Hahn
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.)
Pirelli Deutschland AG Te Breuberg Bondsrepubliek
Pirelli Sacic Te Baudour Belgie
Original Assignee
VEITH PIRELLI AG
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 VEITH PIRELLI AG filed Critical VEITH PIRELLI AG
Priority to AT82100066T priority Critical patent/ATE13326T1/de
Publication of EP0056934A2 publication Critical patent/EP0056934A2/fr
Publication of EP0056934A3 publication Critical patent/EP0056934A3/de
Application granted granted Critical
Publication of EP0056934B1 publication Critical patent/EP0056934B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/144—Mechanical fastening means
    • E04D5/147—Mechanical fastening means not perforating the flexible material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/141—Fastening means therefor characterised by the location of the fastening means
    • E04D5/143—Fastening means therefor characterised by the location of the fastening means in the field of the flexible material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/144—Mechanical fastening means
    • E04D5/145—Discrete fastening means, e.g. discs or clips
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/44—Clasp, clip, support-clamp, or required component thereof
    • Y10T24/44034—Dissociable gripping members

Definitions

  • the invention relates to a device for fastening a water-impermeable, flexible web made of an elastomer on a wall to be sealed, in particular a flat roof, with a mounting part which can be fastened to the wall and which has a projection with outwardly projecting, undercut side bead, and with an outer Fastening part, the web being clampable between the holding part and the outer fastening part.
  • a device of the type described above is known for sealing roof surfaces (FR-A-2429303).
  • the water-impermeable flexible sheet is a roof skin, which is preferably made of rubber.
  • Such roof skins are very weather-resistant and to a certain extent also mechanically resistant, so that they are particularly well suited for sealing roofs of all kinds, in particular on concrete flat roofs.
  • a two-part clamping device which consists of a bracket part directly attachable to the wall, which, for. B. can be attached directly to the wall in question by screws.
  • This retaining part or inner clamping part protrudes outward from the wall in the form of a projection and has a circumferential side bead projecting at a distance from the wall and projecting in the direction of the extent of the wall. In cross section, this results in a type of mushroom shape, the undercut described being at the upper end of the stem of the mushroom.
  • the flexible sheet is placed on the wall and over this bracket part.
  • the holder parts are arranged at different distances on the wall so that the flexible web is adequately fastened at the points of the holder parts.
  • the attachment is now such that an open spring washer made of steel is slipped over the mounting part, the spring ring being slightly bent apart to make it easier to put on. After it has been pushed over the side bead, the bending force ceases, so that the spring ring, by its own spring force, pulls the intervening flexible path around the mushroom head and into the undercut. This achieves a certain grid effect and the roof skin is fixed.
  • the invention is therefore based on the object to improve the fastening device described above so that the disadvantageous wrinkling, damage to the flexible web and also the slipping out of the spring ring is eliminated and even greater fastening stability is achieved with simple means.
  • the outer fastening part has a plate-shaped elastic spring plate at least partially encased by an elastomer or plastomer and a clamping device enclosed on all sides by an elastomer or plastomer to form an elastically yielding cushion arranged opposite the flexible web.
  • the material used here can be the same material as that of the flexible sheet, preferably for the roof skins and for the associated fastening part, elastomer, in particular rubber.
  • the outer fastening part thus has the elastic spring plate on the one hand and the clamping device on the other.
  • the elastic spring plate advantageously ensures that the wind forces acting from outside cannot act on the clamping or stopping point where the waterproof, flexible web is attached to the wall, but are caught on the outer circumference of the spring plate. It is not a rigid structure in which the wind forces could possibly damage the flexible web, but the spring plate is elastic and can, if necessary, distribute pressures caused by wind forces.
  • the elastically yielding cushion which can be produced simply and practically by the all-round sheathing of the clamping device, while the clamping device is on all sides by the elasto meren or plastomers, it may be sufficient if the plate-shaped spring plate is only partially surrounded by the elastomer or plastomer. In a particularly preferred embodiment, however, the elastic spring plate is also completely covered, so that the outer fastening part is an almost completely covered working part.
  • the elastically yielding cushion resulting from the sheathing of the clamping device also means a particularly strong mounting option in the undercut of the inner mounting part.
  • the cushion encompasses the preferably annular clamping device and the inner edge of the elastic spring plate arranged in the vicinity thereof.
  • the round design is preferred and more favorable in terms of production technology, which is why the inner diameter and outer diameter are used to explain the invention.
  • the elastic spring plate consists of metal and is ring-shaped.
  • the elastic spring plate is inexpensive to manufacture and surrounds the clamping device in the form of a ring and supports its spring force to hold the flexible web on the mounting part fastened to the wall to be sealed in question.
  • the elastic spring plate has slots projecting radially inwards from its outer circumference.
  • the mentioned plate shape of the clamping ring and thus the elastic spring plate means truncated cone.
  • the inner diameter of the annular elastic spring plate is practically the middle, lower part of the plate, from which the annular spring plate widens conically outwards.
  • the outer fastening part has, near its outer circumference, a thin annular lip which projects obliquely inwards and away from the plate bottom.
  • a tension equalization is created by the ring lip when the laying surface is uneven.
  • the ring lip prevents the flexible web from being twisted in the case of uneven surfaces which cause the outer plate of the spring plate to deform or enlarge. The latter is therefore no longer warped on one side and is therefore less exposed to damage.
  • the annular lip also reduces the frictional force between the outer fastening part and the flexible web when the flexible web is installed on the wall in question.
  • the ring lip represents a built-in role, so to speak.
  • the unevenness bridged in this way by means of the ring lip sometimes has the further advantage that a defined counter bearing results for the outer fastening part.
  • the outer fastening part has a protective cap made of elastomer or plastomer in the region of the clamping device.
  • This protective cap can, for example, be integrally formed or otherwise attached to the casing of the outer fastening part.
  • the cap serves a stronger mechanical protective effect. It is particularly expedient if the protective cap is arranged at a certain distance from the flexible web in the installed state, so that cushion-like protective surfaces result in particular where the flexible web is pulled over and braced over the holding part. In this part of the web, which mostly has a greater curvature, the protective cap then prevents hail or other mechanical impacts from striking. A flexible sheet is clearly easier to damage by hard impacts when tensioned than when it is not stretched. The arrangement of the protective cap is therefore useful, in particular in the region of the side bead above the annular undercut of the holding part.
  • the clamping device is an open metal spring washer. It is true that the design of the ring itself is a spring ring of the known type described at the outset. According to the invention, however, this metal spring ring is enclosed on all sides by the plastomer or elastomer, and, moreover, it is integral with the at least partially encased elastic spring plate.
  • the open spring ring is no longer a separate piece of wire, but in connection with the elastic spring plate, i.e. H. that is, as an outer fastening part, slipped over the (inner) holding part in order in this way to effectively clamp flexible web between these two parts.
  • the clamping device is a metal wire that can be permanently deformed on one or both sides by twisting. This is also coated on all sides, and it preferably show on one side, optionally or in the other embodiment also on both sides, the two ends of the metal wire so that they are deformed, i. H. can twist like a bag lock.
  • the clamping device is an open coil spring. This is stretched for assembly, but retracts after being slipped over the side bead into the ring-shaped undercut with a clamping effect. It is also conceivable according to the invention if the clamping device is a metal piece that is permanently deformable in the manner of a hose clamp. Here, the assembly is particularly simple because, for. B. a deformation of the wire is only required by a pair of pliers to achieve the known mounting effect with hose clamps.
  • Another and preferred embodiment of the invention is characterized in that the elastic spring plate has a permanently deformable, upstanding collar in the region of its hole, as a result of which a kind of crown cork closure is formed.
  • the bracket is fastened to the roof or wall by screws.
  • dynamic loads alternating voltages
  • the screw When the screw is loosened, it can cause the flexible sheet to perforate when it is unscrewed.
  • an additional tensile force is applied to the mounting part or its screw connection during assembly of the outer fastening part as a result of its spring force. Force fluctuations that occur due to wind load are now advantageously absorbed by the outer fastening part in such a way that the pretension of the fastening screw does not fall below a required minimum and this fastening screw cannot be loosened.
  • a particularly preferred embodiment is further characterized according to the invention in that the open metal spring ring is arranged in the elastically yielding cushion of the elastomer or plastomer and has two extensions which protrude approximately radially in the circumferential direction of the cushion, one of which can be hooked into the other.
  • the two extensions protruding from the elastomer or plastomer in the upper region of the outer fastening part are arranged at a short distance from one another so that the open metal spring ring can be pushed over the side bead of the holding part during assembly, specifically together with the flexible sheet, where appropriate, the mentioned distance between the two protruding extensions temporarily increases.
  • the distance is then reduced and can also be further reduced by hanging one extension in the other.
  • a second extension is shaped to be pulled around and latched to the first extension. This process takes place while reducing the distance between the two extensions protruding from the upholstery, so that the open metal spring ring is pulled together a little closer and the entire fastening of the flexible web on the wall or flat roof is firmly anchored to the mounting part.
  • particularly favorable measures to enable this hanging of the one extension into the other consist in that the first extension of the metal spring washer is essentially straight and the second extension at a distance from the outer circumference of the cushion approximately in the circumferential direction over a length which is less than that The distance between the two extensions is bent to the first extension and bent back again in a U-shape at the end.
  • This U-shaped bent piece allows easy gripping of the first substantially straight extension, so that the desired effect described above can be achieved with simple means, very reliably and with a practical mounting option.
  • the piece bent back in a U-shape at the end of the second extension is again radially outward and pa transversely to the circumferential direction has bent end part parallel to the first extension.
  • the length of this end part then ends approximately at the same height as the first extension that has just been formed.
  • the piece of the second extension which is bent over transversely and extends in the circumferential direction of the cushion is then, seen in the radial direction, approximately between the outlet and the end of the first straight extension.
  • the radially outward straight end part provides good handling, for example by using simple pliers to put the second extension around the first extension so that it can hang on.
  • the mounting part 1 consists of a circular disk 2 with a central fastening hole 3 and of narrow recesses 4.
  • an annular collar 5 adjoins the disk 2 from a frustoconical wall projecting approximately perpendicularly from the wall 6 (FIG. 1), which is connected at its lower end to the disk -2 and has a side bead 7 at its upper end to form an annular undercut 8.
  • This mounting part 1 is shown in FIG. 1 by means of the screw 9 on the wall 6, for. B. the flat roof attached.
  • the water-impermeable, flexible sheet 10 lies on this holding part 1 and is firmly clamped by the outer fastening part 11 with the help of the undercut 8.
  • the outer fastening part 11 has the shape of a plate with an open bottom or a truncated cone, which is essentially given by the shape of the elastic spring plate 12 shown in FIGS. 5 and 6.
  • the outer fastening part 11 has the open spring ring 13 with extensions 14 at its free ends and the frustoconical elastic spring plate 12, both of which are provided with a casing with a bead 15 on the outer circumference a and an elastically yielding cushion 16 on the inner circumference i.
  • Fig. 1 it can also be seen that the outer fastening part 11 near its outer circumference a has an obliquely inwardly and away from the plate bottom thin annular lip 17 which shows all around towards the center, as can also be seen in Fig. 1.
  • An annular protective cap 17a is integrally formed on the pad 16 and covers the hole formed by the inner diameter i at a distance apart from a small central opening 16a.
  • the shape of the fastening part 11 is essentially determined by the annular, elastic metal spring plate 12, which is explained with reference to FIGS. 5 and 6. From the drawing it can be seen that the inner diameter 20 of the spring plate 12 is approximately the same size as the diameter D of the spring ring 13 (see FIGS. 4 and 6).
  • the assembled state of the fastening device in Fig. 1 shows that the holding part 1 with its side bead 7 protrudes through the inner opening formed within the inner diameter i of the outer fastening part 11, the flexible web 10 between the cushion 16, supported by the inner circumference i of the spring plate 12, further by the directional force of the spring ring 13 and additionally by the restoring force in the cushion 16, and the side bead 7 is clamped, vigorously, reliably and without undesirable wrinkling, because a large-area pressure distribution is made possible by the new fastening device.
  • FIGS. 9 and 10 show a clamping device in which instead of the open spring ring 13 in the manner of a bag closure, permanently deformable ends protrude laterally on one side (FIG. 9) or on both sides (FIG. 10). These can be twisted permanently like when closing a sack.
  • a clamping device with a self-contained tension spring 20 bent to form a ring or an open clock spring (FIG. 12) is used.
  • This type of clamping device is assembled by a spreading process by using a spreading device, stretching the cushion area provided with the respective spring, pushing it over the side bead 7 and then removing the spreading device.
  • a clamping device in which a ring made of wire or sheet metal, preferably made of V2A steel, is used in the manner of a hose clamp and is also permanently deformed.
  • the top view of the not yet deformed shape according to FIG. 13 is a circular piece of metal which has additional tabs or loops on two diametrically opposite ends of the circle. As shown in the figures, this piece of metal can preferably be bent in an endless manner in the manner described. After the outer fastening part has been slipped over the side bead 7 of the holding part 1, the metal piece according to FIG. 13 is pressed together at the points denoted by b in such a way that the shape of FIG. 14 results in a top view. In this way, the attachment is made and the desired clamping effect is achieved.
  • FIGS. 15 and 16 Another other type of closure in the manner of a crown cap closure is shown in FIGS. 15 and 16. It can be seen how the elastic spring plate 12 ', which is here completely encased by an elastomer to form the outer fastening part 11', has a collar c projecting outwards in the region of the inner circumference i. This increases the diameter along the circumference i. After this outer fastening part 11 'has been slipped over the side bead 7 of the holding part 1, the upstanding collar c is raised into the position shown in cross section in FIG. 16 with a corresponding tool, as a result of which the diameter in the inner circumference i is reduced. In other words, by reducing this diameter in a desired manner, the elastically yielding cushion 16 penetrates into the annular undercut 8 of the holding part 1, as a result of which the desired clamping effect is achieved again.
  • FIGS. 17 to 21 a different type of spring ring 13 is shown than described in connection with FIGS. 1 to 4.
  • the mounting part 1 also has a slightly changed shape compared to the exemplary embodiment shown in FIGS. 1, 7 and 8.
  • the difference of the new metal spring washer in the last-mentioned exemplary embodiments compared to the former essentially consists only in the shape of the extensions 14, 30, which, as in the case of FIGS. 1 to 4, are arranged at a distance c from one another and emerge from the peripheral surface of the elastically yielding cushion 16. Otherwise, the metal spring ring 13 itself, as in the other embodiments, lies within the elastically yielding cushion of the elastomer or plastomer, surrounded and embedded by it.
  • the extensions 14, 30 according to FIGS. 17 to 21 are, in contrast to the first described embodiment, differently designed and shaped such that one, for example the first extension 14, can be hooked into the other, the second extension 30.
  • the first extension 14 of the metal spring ring 13 is essentially straight, as can be seen particularly clearly from FIGS. 18, 19 and 21. It can be seen from the illustration in FIG. 20 that the extension 14 does not have to be an exact geometric straightness, in which the extension 14 is somewhat bent relative to the exit point from the cushion 16 and is continued radially in another path. 17, 18, 20 and 21 it can also be seen that the ends of the two extensions end approximately at the same distance from the outer circumference of the elastic cushion 16.
  • the second extension 30 is configured differently.
  • the specified distances c, d and length 1 are drawn using the figures for an already mounted metal spring washer 13, while some distances are changed in the unassembled state. It should therefore be noted that the distance c is the distance that the two central axes of the extensions 13 and 30 have along the circumference of the pad 16. Due to the compression, the distance c is therefore somewhat larger from the definition, while it has actually become smaller compared to the relaxed state due to the hanging.
  • the second extension which is generally designated 30 in the figures, is bent from the outer circumference of the cushion 16 at a distance c - viewed in the circumferential direction of the cushion 16 - over a length 1 to the first extension 14, i. H. in the representation of FIG. 21 upwards, in that of FIG. 18 downwards and in FIG. 17 pointing towards the viewer.
  • the length 1 is smaller than the distance c explained above between the two extensions 14 and 30 emerging from the cushion 16.
  • the second extension 30 is bent back again in a U-shape so that the one shown in FIGS 18 and 19 shown bent back piece 32 results.
  • This U-shaped piece 32 is the hanging part, into which the first extension 14 is hooked, as shown in FIGS. 17 to 21.
  • this U-shaped piece 32 is again transverse to the circumferential direction, i.e. H. thus pointing radially outward and bent parallel to the first extension 14 so that the end part 33 results.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)

Claims (13)

1. Dispositif de fixation d'une bande flexible (10), imperméable, en un élastomère, à une surface (6) à étanchéifier, en particulier un toit plat, avec une pièce de retenue (1) pouvant être fixée à la surface (6), et présentant une saillie (5) avec un bourrelet latéral (7) formant une dépouille (8) et faisant une saillie vers l'extérieur, ainsi qu'avec une pièce de fixation extérieure (11), la bande (10) pouvant être serrée entre la pièce de retenue (1) et la pièce de fixation (11), caractérisé en ce que la pièce de fixation extérieure (11) présente, d'une seule pièce, une plaque élastique (12) en forme d'assiette enrobée au moins partiellement par un élastomère ou un plastomère ainsi qu'un dispositif de serrage (13) enrobé entièrement par un élastomère ou un plastomère en formant un coussin (16) compressible élastiquement disposé vis-à-vis de la bande flexible (10).
2. Dispositif selon la revendication 1, caractérisé en ce que la plaque élastique (12) est constituée par un métal et présente une forme annulaire.
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la plaque élastique (12) présente des fentes (22) faisant saillie radialement de sa périphérie extérieure (21) vers l'intérieur.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la pièce de fixation extérieure (11) présente, près de sa périphérie extérieure (a) une fine lèvre annulaire (17) faisant une saillie en biais vers l'intérieur en s'éloignant du fond de l'assiette.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la pièce de fixation extérieure (11) présente un capuchon de protection (17a) en élastomère ou en plastomère dans la zone du dispositif de serrage (13).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de serrage est constitué par une bague élastique ouverte (13) en métal.
7. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de serrage est constitué par un fil métallique pouvant être déformé d'un côté ou des deux côtés et restant torsadé (figures 9 et 10).
8. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de serrage est constitué par un ressort spiral ouvert (21) (figure 12).
9. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de serrage est constitué par une pièce métallique pouvant être déformée à la manière d'un collier de serrage de tuyau (figures 13 et 14).
10. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la plaque élastique (12') présente dans la zone de son ouverture un collet (c) debout, déformable à la manière d'une fermeture à créneaux (figures 15 et 16).
11. Dispositif selon l'une des revendications 1 à 6, et 10, caractérisé en ce que la bague élastique ouverte (13) est disposée dans le coussin compressible élastiquement (16) de l'élastomère ou du plastomère et qu'elle présente deux prolongements (14, 30) faisant saillie radialement à distance (c) l'un de l'autre dans le sens de la périphérie du coussin (16), l'un (14) des prolongements pouvant être accroché à l'autre (30).
12. Dispositif selon l'une des revendications 1 à 6 et 11, caractérisé en ce que le premier prolongement (14) de la bague élastique métallique (13) est essentiellement rectiligne et que le deuxième prolongement (30) est courbé à distance (d) de la périphérie extérieure du coussin (16) sensiblement dans le sens de la périphérie sur une longueur (1) qui est inférieure à la distance (c) entre les deux prolongements (14, 30) vers le premier prolongement (14) et encore une fois recourbé en forme de U (32) à son extrémité (31) (figures 17, 21).
13. Dispositif selon l'une des revendications 1 à 6, 10 et 12, caractérisé en ce que la pièce (32) recourbée en forme de U à l'extrémité (31) du deuxième prolongement (30) présente une pièce d'extrémité (33) encore une fois recourbée transversalement par rapport au sens périphérique, de façon radiale vers l'extérieur et parallèle au premier prolongement (14) (figures 17 à 21).
EP82100066A 1981-01-23 1982-01-07 Dispositif de fixation d'une bande flexible à une surface Expired EP0056934B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100066T ATE13326T1 (de) 1981-01-23 1982-01-07 Vorrichtung zur befestigung einer flexiblen bahn an einer wand.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3102201 1981-01-23
DE3102201 1981-01-23
DE3134973 1981-04-09
DE3134973A DE3134973C2 (de) 1981-01-23 1981-09-04 Vorrichtung zur Befestigung einer flexiblen Bahn an einer Wandung

Publications (3)

Publication Number Publication Date
EP0056934A2 EP0056934A2 (fr) 1982-08-04
EP0056934A3 EP0056934A3 (en) 1983-06-15
EP0056934B1 true EP0056934B1 (fr) 1985-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100066A Expired EP0056934B1 (fr) 1981-01-23 1982-01-07 Dispositif de fixation d'une bande flexible à une surface

Country Status (4)

Country Link
US (1) US4502256A (fr)
EP (1) EP0056934B1 (fr)
JP (1) JPS57143050A (fr)
DE (2) DE3134973C2 (fr)

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Also Published As

Publication number Publication date
EP0056934A3 (en) 1983-06-15
JPS57143050A (en) 1982-09-04
DE3263444D1 (en) 1985-06-20
DE3134973C2 (de) 1983-12-29
EP0056934A2 (fr) 1982-08-04
DE3134973A1 (de) 1982-08-12
US4502256A (en) 1985-03-05

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