EP0173095A2 - Plaque mixte saillante pour la construction, en particulier pour fond double - Google Patents

Plaque mixte saillante pour la construction, en particulier pour fond double Download PDF

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Publication number
EP0173095A2
EP0173095A2 EP85109559A EP85109559A EP0173095A2 EP 0173095 A2 EP0173095 A2 EP 0173095A2 EP 85109559 A EP85109559 A EP 85109559A EP 85109559 A EP85109559 A EP 85109559A EP 0173095 A2 EP0173095 A2 EP 0173095A2
Authority
EP
European Patent Office
Prior art keywords
composite building
building board
formations
trough
shaped reinforcement
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.)
Granted
Application number
EP85109559A
Other languages
German (de)
English (en)
Other versions
EP0173095A3 (en
EP0173095B1 (fr
Inventor
Manfred Radtke
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.)
Mero Werke Dr Ing Max Mengeringhausen GmbH and Co
Original Assignee
Mero Werke Dr Ing Max Mengeringhausen 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 Mero Werke Dr Ing Max Mengeringhausen GmbH and Co filed Critical Mero Werke Dr Ing Max Mengeringhausen GmbH and Co
Priority to AT85109559T priority Critical patent/ATE44065T1/de
Publication of EP0173095A2 publication Critical patent/EP0173095A2/fr
Publication of EP0173095A3 publication Critical patent/EP0173095A3/de
Application granted granted Critical
Publication of EP0173095B1 publication Critical patent/EP0173095B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • E04F15/02417—Floor panels made of box-like elements
    • E04F15/02423—Floor panels made of box-like elements filled with core material
    • E04F15/02429—Floor panels made of box-like elements filled with core material the core material hardening after application
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • E04F15/02411—Floor panels with integrated feet
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/185—Underlayers in the form of studded or ribbed plates
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/232—Encased layer derived from inorganic settable ingredient
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y10T428/24331—Composite web or sheet including nonapertured component
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24562—Interlaminar spaces
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities

Definitions

  • the invention relates to a self-supporting composite building board, in particular for raised floors, with an outer trough-shaped reinforcement for a flowable or pourable and curable filler with high compressive strength in the cured state, e.g. Anhydrite, concrete or the like
  • Such a self-supporting composite building board is known from DE-PS 2 004 101.
  • the trough-shaped reinforcement of this composite building board has a practically flat bottom and its entire clear cross section is filled with anhydrite, so that this composite building board has a correspondingly high weight.
  • a lower board weight is desired without sacrificing the numerous advantages of this composite building board, e.g. with high fire resistance, resilience, impact sound insulation, etc.
  • DE-OS 31 03 632 and 29 30 426 are also already known double floor panels with numerous knob-shaped projections on their undersides, but which are all supported on an underbody, that is, form a plurality of support feet.
  • These raised access floor panels may have a lower weight than the composite construction panel explained at the beginning, but are not self-supporting, i.e. cannot be supported exclusively on their corners on footrests, because the required reinforcement is missing.
  • a double floor plate made of steel which contains a flat cover plate which is welded to the apex of a plurality of dome-shaped projections and to the peripheral, upwardly curved edge of a lower part.
  • This double floor panel also has a relatively high weight, but its main disadvantage is that in the event of a fire in the cavity of the double floor due to the metallic connection of the underside to the top of the panel, practically unimpeded heat transfer to the room above takes place with all the disadvantageous consequences.
  • the invention has for its object to develop a cantilever composite building board of the type mentioned in such a way that it has a significantly lower weight and still retain the advantageous properties described above.
  • this object is achieved in that the trough-shaped reinforcement is provided on its underside with a plurality of nub-like, filler-containing formations which are connected to one another by a floor element of high tensile strength.
  • the knob-like formations on the underside of the trough-shaped reinforcement means that a much smaller amount of filler is absorbed than from the corresponding lower clear cross-sectional area of the known trough-shaped Reinforcement with a practically flat floor.
  • the weight reduction achieved in this way with the finished composite building board compared to the prior art is approximately 40%.
  • the lower amount of filler in the lower cross-sectional area of the composite building board (below the neutral board level) is meaningless because when the composite building board is loaded in this area, only tensile stresses occur anyway and the filler, for example anhydrite or concrete, is one with very low tensile strength and very low modulus of elasticity.
  • the high resilience of the composite building board according to the invention is ensured in that a bottom element of high tensile strength is attached to the downwardly protruding knob-like formations, which absorbs the tensile forces occurring on its underside when the composite building board is loaded.
  • the arrangement of such a floor element also makes it possible to use relatively thin-walled material for the trough-shaped reinforcement, which has a favorable effect on their production costs.
  • the amount of filler relevant for the impact sound insulation is nevertheless also present to a sufficient extent in the composite building board according to the invention.
  • the relatively high fire resistance of the composite building board is ensured by the fact that a sufficiently thick filler layer that is decisive for this is present over the entire board cross-section between the trough-shaped reinforcement and the top of the board.
  • any coverings can be attached to the top of the plate.
  • the knob-like formations on the underside of the trough-shaped reinforcement are preferably of uniform design and are arranged regularly and are expediently produced using the steel sheet for the trough-shaped reinforcement in the deep-drawing process.
  • the floor element with high tensile strength can be welded, glued, riveted or screwed onto the knob-like formations of the trough-shaped reinforcement.
  • the floor element can simply consist of a sheet of thin metal.
  • the bottom element must be perforated.
  • the flexural strength of the composite building board is improved if the base element is provided with stiffening beads or the like.
  • the floor element can also consist of a grid, e.g. a steel mesh, be formed.
  • the height of the knob-like formations can be approximately half the total height of the trough-shaped reinforcement and thus lie below the neutral level of the composite building board.
  • the knob-like formations can be frustoconical, their cross-section becoming smaller towards the outside. This frusto-conical version of the knob-like formations is preferred because of the simplified removal of the finished trough-shaped reinforcement from a corresponding deep-drawing tool.
  • the height of the knob-like formations becomes progressively smaller towards the center of the trough-shaped reinforcement in order to arch the trough-shaped reinforcement slightly upwards, so that after the filler has been introduced, the underside and top of the composite building board run plane-parallel to one another, the slight deflection of the trough-shaped reinforcement caused by the weight of the filler is advantageously compensated for.
  • the trough-shaped reinforcement of which has openings with pressed-in edges for anchoring in the filler, it is expedient for manufacturing reasons if the bottoms of the knobs like formations these openings have.
  • the openings in the bottoms of the knob-like formations are closed to the outside by the base element, the filler is prevented from escaping through these openings as long as it is still in the flowable or pourable state.
  • the closure materials previously applied over the openings for the same purpose are thus advantageously replaced by the base element which is required anyway.
  • the spot welding process is facilitated.
  • the self-supporting composite building boards 10 and 10A selected as exemplary embodiments form floor boards for raised floors. Such floor slabs are laid against each other and placed at their corners on footrests, which in turn are placed on the raw floor of the respective building.
  • the composite building board 10 contains an outer trough-shaped reinforcement 11, which in the exemplary embodiment is made of sheet steel with a surface protection, e.g. there is a zinc coating.
  • the trough-shaped reinforcement 11 has numerous, regularly arranged, uniform, knob-like formations 12 on its underside, which are formed in a deep-drawing process together with the upwardly extending, circumferential side walls 13 of the trough-shaped reinforcement 11.
  • These knob-like formations 12 form truncated cones, the cross-section of which is slightly smaller towards the outside or below.
  • the height of the formations 12 corresponds to approximately half the height of the reinforcement 11.
  • the height of the knob-like formations 12 can decrease progressively towards the center of the trough-shaped reinforcement 11, so that the bottom sides 14 of the formations 12 are slightly curved upwards.
  • This has the advantage that when the filler is introduced into the trough-shaped reinforcement by the weight of the filler, the trough-shaped reinforcement 11 is bent down to such an extent that the underside and top of the finished composite building board 10 are planar-parallel run.
  • the knob-like formations 12 e.g. have a smallest diameter of approx. 20 mm and be arranged at a mutual distance of approx. 40 mm, measured from center to center of the formations.
  • a sheet of steel of small thickness, acting as a base element 15, is fastened by means of spot welding, which can be provided with openings 16 in relation to the cavities between the formations 12 for further weight saving, as is indicated in FIG. 4.
  • spot welding which can be provided with openings 16 in relation to the cavities between the formations 12 for further weight saving, as is indicated in FIG. 4.
  • wart-like welding projections 17 are arranged, which facilitate the puncturing of the bottom element 15 by means of a corresponding spot welding machine.
  • this floor element 15 serves to absorb tensile forces and, like the trough-shaped reinforcement 11, is provided with a surface protection, for example a zinc coating.
  • a flowable or pourable and curable filler 18, preferably anhydrite, is introduced into the trough-shaped reinforcement 11, which is open at the top. Possibly. after passing through a vibrating station, excess filler 18 is wiped off in order to obtain a smooth surface 19. After the filler 18 has hardened, the surface 19 can, if necessary, be additionally ground so that it is perfectly flat.
  • a walking surface 20, e.g. a carpet, a plastic sheet, etc. is attached by an adhesive.
  • the self-supporting composite building board 10A shown partially in section in FIG. 4 essentially corresponds to that according to FIG. 3 and the same parts are therefore also identified by the same reference numbers.
  • the trough-shaped reinforcement 11 has openings 21 with inwardly drawn edges on its circumferential side walls 13 and on the bottom sides 14 of its knob-like formations, which edges serve to produce a composite effect between the trough-shaped reinforcement 11 and the Filler 18 serve.
  • DE-PS 2 004 101 The corresponding details are described in detail in DE-PS 2 004 101.
  • the sheet steel sheet of small thickness which is fastened on the outside on the bottom sides 14 of the formations 12 by spot welding and serves as a base element 15 ', serves not only to absorb tensile forces when the composite building board 10A is loaded, but also for the purpose of the filler 18 leaking out during the filling process Avoid openings 21 in the bottom sides 14.
  • the openings 21 in the side walls 13 of the trough-shaped reinforcement 11 are closed to the outside for the same purpose with an adhesive strip or the like.
  • the sheet steel plate serving as the base element 15 ' has, in this exemplary embodiment, openings 16 between the formations 16 for reducing weight.
  • the knob-like formations 12 in the trough-shaped reinforcement .11 can also be cylindrical or have a polygonal cross section. Although galvanized steel sheet is preferred for the trough-shaped reinforcement 11 and the floor elements 15 and 15 ', these components can also consist of other materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Floor Finish (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Laminated Bodies (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP85109559A 1984-08-24 1985-07-30 Plaque mixte saillante pour la construction, en particulier pour fond double Expired EP0173095B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109559T ATE44065T1 (de) 1984-08-24 1985-07-30 Freitragende verbundbauplatte, insbesondere fuer doppelboeden.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431118 1984-08-24
DE3431118A DE3431118C1 (de) 1984-08-24 1984-08-24 Freitragende Verbundbauplatte,insbesondere fuer Doppelboeden

Publications (3)

Publication Number Publication Date
EP0173095A2 true EP0173095A2 (fr) 1986-03-05
EP0173095A3 EP0173095A3 (en) 1987-03-25
EP0173095B1 EP0173095B1 (fr) 1989-06-14

Family

ID=6243762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109559A Expired EP0173095B1 (fr) 1984-08-24 1985-07-30 Plaque mixte saillante pour la construction, en particulier pour fond double

Country Status (6)

Country Link
US (1) US4640854A (fr)
EP (1) EP0173095B1 (fr)
AT (1) ATE44065T1 (fr)
CA (1) CA1251944A (fr)
DE (1) DE3431118C1 (fr)
ES (1) ES288739Y (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720238A1 (de) * 1987-06-19 1989-01-05 Mero Werke Kg Verbundbauplatte, insbesondere fuer doppelboeden
US4993208A (en) * 1987-09-29 1991-02-19 Buchtal Gesellschaft Mit Beschrankter Haftung Mold for producing tile-shaped floor elements for forming a double floor construction and a corresponding tile-shaped floor element
DE3803062A1 (de) * 1988-01-29 1989-08-10 Herbst Donald Biegsame schalungsfolie
DE3902419C3 (de) * 1989-01-27 2000-06-15 Dieter Opitz Bodenbelag
IT1237170B (it) * 1989-10-27 1993-05-24 Componente deumidificante per sistemi murari.
JP3006069B2 (ja) * 1990-10-26 2000-02-07 タカタ株式会社 エアバッグ装置のモジュールカバー
KR970033353A (ko) * 1995-12-19 1997-07-22 이대원 요소연결부 구조
US5950390A (en) * 1998-04-20 1999-09-14 Jones; Jack Pre-cast concrete building module
DE29907682U1 (de) 1999-04-30 2000-09-07 Deutsche Verpackungsmittel Bodenplatte
WO2003062556A2 (fr) * 2002-01-25 2003-07-31 Edilconsulting S.A. Panneau plat pour plancher sureleve
ITTV20020034A1 (it) * 2002-04-04 2003-10-06 Marcello Toncelli Lastra rinforzata in conglomerato cementizio, procedimento per la suafabbricazione e relativa struttura di rinforzo
ITVR20020035A1 (it) * 2002-04-11 2003-10-13 Stone Italiana S R L Procedimento per la produzione di lastre o piastrelle in materiale agglomerato armate con piastra metallica e lastre o piastrelle armate con
USD813421S1 (en) 2009-08-28 2018-03-20 Progress Profiles Spa Floor underlayment
US9188348B2 (en) 2009-08-28 2015-11-17 Progress Profiles Spa Method and apparatus for positioning heating elements
US8950141B2 (en) * 2012-09-12 2015-02-10 Schluter Systems L.P. Veneer underlayment
HUE045276T2 (hu) 2014-08-18 2019-12-30 Progress Profiles Spa Padlóalátét fûtõelemek elhelyezésére és padlórendszer
US10215423B2 (en) 2014-08-18 2019-02-26 Progress Profiles S.P.A. Method and apparatus for positioning heating elements
USD806911S1 (en) 2015-03-17 2018-01-02 Silcart S.P.A. Floor underlayment
US9328520B1 (en) * 2015-07-17 2016-05-03 Matthew Kriser High strength in-floor decoupling membrane
US10859274B2 (en) 2016-04-01 2020-12-08 Progress Profiles S.P.A. Support for radiant covering and floor heating elements
US9726383B1 (en) 2016-06-17 2017-08-08 Progress Profiles S.P.A. Support for radiant covering and floor heating elements
USD971449S1 (en) 2016-04-13 2022-11-29 Progress Profiles S.P.A. Floor underlayment
GB2571745B (en) * 2018-03-07 2020-07-22 George Owen Ltd Concrete paving panel
US11746541B2 (en) * 2019-04-01 2023-09-05 Formulated Materials Llc High compressive strength sound attenuation
DE102019109458A1 (de) * 2019-04-10 2020-10-15 Infinex Holding Gmbh Trägerplatte für einen Boden-, Wand- oder Deckenaufbau
CA3149437A1 (fr) * 2019-09-06 2021-03-11 Josef Peter Kurath-Grollmann Plancher en beton, elements de plancher en beton et procedes de fabrication d'un plancher en beton et d'un element de plancher en beton

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930426A1 (de) * 1979-07-26 1981-02-12 Weitz Betonwerk Kleinwallstadt Fussbodenelement fuer eine fussbodenheizung
DE3103632A1 (de) * 1981-02-04 1982-08-19 Schmidt Reuter Ingenieurgesellschaft mbH & Co KG, 5000 Köln "hohlboden"
US4411121A (en) * 1981-02-02 1983-10-25 Tate Architectural Products, Inc. Structural member with truncated conical portion and composite panel including same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544042A (en) * 1940-07-23 1942-03-25 George Carpenter Improvements in and relating to reinforcement of lightweight building slabs and like materials
US3286418A (en) * 1962-08-14 1966-11-22 Kissam Builders Supply Company Prestressed composite load-bearing slab
CH516709A (de) * 1970-01-30 1971-12-15 Mero Ag Verfahren zur Herstellung von Verbund-Bauplatten
FR2143610A2 (en) * 1971-06-29 1973-02-09 Morel Charles Foam cored panels - reinforced with steel webs in two directions and with some core cells filled with concrete
US3845593A (en) * 1972-09-12 1974-11-05 G Zen Lightweight concrete panel
GB2050904A (en) * 1979-06-20 1981-01-14 Tate Architectural Products Rigid stiffening web for load- bearing panel
DE3345620C1 (de) * 1983-12-16 1985-04-25 MERO-Werke Dr.-Ing. Max Mengeringhausen, GmbH & Co, 8700 Würzburg Freitragende Verbundplatte für Doppelböden, Decken oder dergleichen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930426A1 (de) * 1979-07-26 1981-02-12 Weitz Betonwerk Kleinwallstadt Fussbodenelement fuer eine fussbodenheizung
US4411121A (en) * 1981-02-02 1983-10-25 Tate Architectural Products, Inc. Structural member with truncated conical portion and composite panel including same
DE3103632A1 (de) * 1981-02-04 1982-08-19 Schmidt Reuter Ingenieurgesellschaft mbH & Co KG, 5000 Köln "hohlboden"

Also Published As

Publication number Publication date
ES288739Y (es) 1986-10-01
US4640854A (en) 1987-02-03
EP0173095A3 (en) 1987-03-25
ATE44065T1 (de) 1989-06-15
DE3431118C1 (de) 1985-04-04
EP0173095B1 (fr) 1989-06-14
CA1251944A (fr) 1989-04-04
ES288739U (es) 1986-01-16

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