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EP0167999A2 - Fond de tamis - Google Patents

Fond de tamis Download PDF

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Publication number
EP0167999A2
EP0167999A2 EP85108325A EP85108325A EP0167999A2 EP 0167999 A2 EP0167999 A2 EP 0167999A2 EP 85108325 A EP85108325 A EP 85108325A EP 85108325 A EP85108325 A EP 85108325A EP 0167999 A2 EP0167999 A2 EP 0167999A2
Authority
EP
European Patent Office
Prior art keywords
profile
sieve
covering according
screen
elements
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
EP85108325A
Other languages
German (de)
English (en)
Other versions
EP0167999B1 (fr
EP0167999B2 (fr
EP0167999A3 (en
Inventor
Wolfgang Lehmann
Siegfried Schroeter
Christian Neukam
Horst Krüger
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.)
HEIN LEHMANN TRENN- und FOERDERTECHNIK GmbH
Original Assignee
Isenmann Siebe GmbH
Hein Lehmann 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6240336&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0167999(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Isenmann Siebe GmbH, Hein Lehmann AG filed Critical Isenmann Siebe GmbH
Priority to AT85108325T priority Critical patent/ATE37149T1/de
Publication of EP0167999A2 publication Critical patent/EP0167999A2/fr
Publication of EP0167999A3 publication Critical patent/EP0167999A3/de
Publication of EP0167999B1 publication Critical patent/EP0167999B1/fr
Application granted granted Critical
Publication of EP0167999B2 publication Critical patent/EP0167999B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4645—Screening surfaces built up of modular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/02—Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces

Definitions

  • the invention relates to a screen covering with screen elements arranged side by side, which are interchangeably fastened to a supporting substructure by additional plastic profiles or bolts, which hold two lateral edges of adjacent screen elements and which have projections on their underside which are fastened in a latching manner to the substructure.
  • Such a screen covering is known from German publication 27 36 662.
  • the plastic profiles holding the sieve elements are arranged with their upper side at the level of the upper side of the sieve elements, so that the profiles are exposed to the material to be sieved and thus the plastic of the profiles not only has to ensure that the sieve elements are held in place, but also for a small amount Wear must be selected.
  • these profiles require protruding reinforcement parts of the sieve elements in order to be able to attach the sieve elements to the substructure through the profiles.
  • the object of the invention is to improve a screen covering of the type mentioned in such a way that the intermediate element (profile, bolt) is not exposed to wear and the screen elements are simple to manufacture.
  • intermediate element There is always only a single intermediate element between two screen elements, so that the number of intermediate elements (profiles, bolts) can be small. In the area of the profiles or bolts, these form several projections and recesses with the end faces of the screen elements, so that a multiple labyrinth of high density is created.
  • the intermediate elements, in particular profiles, are particularly easy to manufacture so that they can be created by continuous casting or segmental injection molding.
  • fastening elements do not form any projections over the upper sieve surface, since in the area of the profiles or bolts the top of the sieve elements continuously passes through without recesses and / or elevations.
  • the screen elements can be fastened in a form-locking manner with a lower, recessed area of the end faces on the profiles or bolts.
  • the profile or the bolt have at least one projection on the side, in particular at least one tooth, which lies in a correspondingly shaped recess on the end face of the screen elements.
  • the projections and recesses can be shaped such that a greater force can be transmitted to the profile or the bolt in the pulling direction of the sieve element than in the downward pressure direction. This creates a particularly secure hold, with assembly and disassembly being even easier.
  • the projections and recesses can be sawtooth-shaped, the steeper flanks of the projections of the profile or of the bolt facing the top of the screen elements. It is also proposed that the projections and recesses run over the entire length of the profile and two side edges of the screen element.
  • a bar projects approximately horizontally from the top of the substructure on the profile or bolt on both sides, covering the top of the substructure.
  • the free end of the bar can be angled downward in an approximately L-shaped manner and, with this area, protectively overlap the upper part of the side wall of the profile of the substructure to which the plastic profile is held.
  • the top of the bar on the outer edge can also form an upwardly protruding lip which, when the bar is under tension, lies sealingly on the underside of the screen element.
  • the profiles or bolts have two recesses on the top, in particular two grooves running along the profile, and that a recess or groove has a correspondingly shaped projection on the underside of a screen element and into the other recess or groove, a correspondingly shaped projection engages on the underside of the adjacent screen element.
  • the outer vertical side wall of the groove can be aligned with the free, downwardly angled end of the strip.
  • the profile has two longitudinal parallel grooves on the underside, into which two free legs of the substructure engage.
  • the profile or the bolt is formed by a laterally protruding area of the adjacent screen element, in particular a screen element located at the edge of the screen covering.
  • the profile or the bolt can be formed from a laterally projecting molded-on area of a lateral edge part of the sieve plate, so that a secure and tight edge closure of the sieve plate is achieved.
  • a sieve tray 1 is composed of individual rectangular sieve elements 2, the length of which is at least twice the width.
  • the sieve elements extend between the two vertical side walls 3 of a sieving machine and consist of plastic.
  • the end faces 4 of two adjacent screen elements lie close together in the upper region. In the area underneath, the end faces 4 jump back to form recesses 5.
  • the recessed areas 5 of two adjacent screen elements 2 form a space below the abutting end faces 4 in which the upper area of a plastic profile 6 lies.
  • the profile 6 extends over the entire length of the longer sides of the sieve elements 2 and forms projections or teeth 7 in the upper region, which engage in a form-fitting manner in correspondingly shaped recesses 8 in the recessed regions 5.
  • the upper area of the profile 6 corresponds in size to the space formed by the area 5 between two adjacent screen elements 2. Below this, the profile 6 forms two ledges 10 projecting on both sides, which are arranged horizontally and with their top on the underside 11 of the screen elements 2 concerns.
  • the longitudinal strips 10 lie with their underside on a U-shaped steel profile 12, the upward-facing legs are bent inwards and thus form a gap-shaped opening 13 above, into which a strip-shaped projection 14 of the profile 6 extends into a detent. In order to enable a latching hold of the projection 14, it is in the inserted one Position at the height of the opening 13 approximately from the width of the opening and below that of a larger cross section.
  • the profile 6 has no influence on the shape of the top 16 of the screen elements 2, so that the top 16 can be flat.
  • the openings in the sieve elements 2 for the material to be sieved are not shown.
  • the horizontal strips 10 can be bent downwards at right angles at their free ends and thus partially encompass the outer sides of the U-profiles 12.
  • the strips 10 are thus L-shaped in cross section.
  • the free ends of the strips 10 have upwardly directed lips 17 which extend along the profile 6 and press against the underside of the sieve elements 2.
  • the embodiment shown in FIG. 3 differs in that the upper area of the profile 6 does not have a plurality of longitudinally extending horizontal teeth as in FIG. 1, but only a single tooth-shaped projection 7a on each side, each in a corresponding recess 8a the face of the screen element.
  • the profiles have two longitudinal grooves 18 on the upper side, into which strip-shaped projections 19 protrude, which are formed on the undersides 11 of the sieve elements 2.
  • lip-shaped profiles can also protrude further on the undersides 11, which encompass the profile 6 on the outside.
  • the area of the profile 6 which remains between the two grooves 18 and which projects upwards lies, like the upper area of the profile 6 in the exemplary embodiment according to FIG. 1, in recessed areas 5 of the end faces of the screen elements.
  • the profile 6 according to FIG. 4 thus has on the underside 2 longitudinal parallel grooves 20 into which the two free legs of the U-profile 12 protrude.
  • the profile 6 can also be formed on the longitudinal side of a screen element, so that sawtooth-shaped projections are only required on one side of the profile.
  • This embodiment is also particularly suitable for fastening sieve elements in the edge region of a sieve bottom. This is shown on the left in FIG. 1.
  • the free edge of the screen element 2a is clamped between a lower L-shaped profile 21 made of steel and an upper plastic strip 22.
  • a conventional sieve element 2 can also be attached to the edge of the sieve bottom, as is shown on the right-hand side of FIG. 1.
  • a half profile 6 is pushed into a half profile 12 in a latching manner.
  • FIG. 6 A further alternative method of fastening the sieve elements in the edge region is shown in FIG. 6.
  • a side plastic profile 23 of greater height than width has in the lower region a half-molded profile 6 on which a conventional sieve element 2 is held in the same manner as in FIG. 1 is shown on the right. This reduces the number of parts to be assembled and reliably protects the side wall of the screening machine.
  • the intermediate element can be formed by a bolt or a bolt-shaped part instead of a profile 6.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Stringed Musical Instruments (AREA)
  • Pyridine Compounds (AREA)
  • Table Devices Or Equipment (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
EP85108325A 1984-07-11 1985-07-05 Fond de tamis Expired - Lifetime EP0167999B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108325T ATE37149T1 (de) 1984-07-11 1985-07-05 Siebbelag.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3425485 1984-07-11
DE19843425485 DE3425485A1 (de) 1984-07-11 1984-07-11 Siebbelag

Publications (4)

Publication Number Publication Date
EP0167999A2 true EP0167999A2 (fr) 1986-01-15
EP0167999A3 EP0167999A3 (en) 1986-06-25
EP0167999B1 EP0167999B1 (fr) 1988-09-14
EP0167999B2 EP0167999B2 (fr) 1991-12-18

Family

ID=6240336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108325A Expired - Lifetime EP0167999B2 (fr) 1984-07-11 1985-07-05 Fond de tamis

Country Status (9)

Country Link
EP (1) EP0167999B2 (fr)
JP (1) JPH0317976Y2 (fr)
AT (1) ATE37149T1 (fr)
AU (1) AU586172B2 (fr)
DE (2) DE3425485A1 (fr)
DK (1) DK314585A (fr)
ES (1) ES287996Y (fr)
NO (1) NO163517C (fr)
ZA (1) ZA855136B (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005594A1 (fr) * 1988-11-23 1990-05-31 Western Wire Works, Incorporated Systeme modulaire
US5049262A (en) * 1988-11-23 1991-09-17 Galton Zanley F Modular system
US5112475A (en) * 1990-08-06 1992-05-12 Conn-Weld Industries, Inc. Panel mounting system
EP0567361A1 (fr) * 1992-04-24 1993-10-27 Giron Holding Système de fixation de panneaux modulaires de criblage sur une structure de maintien
US5346053A (en) * 1992-02-28 1994-09-13 Dorn Lloyd A Modular screen system for screening deck
US5372261A (en) * 1991-10-25 1994-12-13 Western Wire Works, Inc. System and method for screening or diverting particulate material
DE19635156A1 (de) * 1996-08-30 1997-08-21 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben sowie danach hergestelltes Sieb
DE19635189A1 (de) * 1996-08-30 1998-03-05 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben sowie dadurch hergestelltes Sieb
WO1998033604A1 (fr) * 1997-02-04 1998-08-06 Svedala Trellex Ab Crible dote d'elements a toile de criblage allonges se chevauchant
US5829599A (en) * 1995-08-31 1998-11-03 Lettela Proprietary Limited Screening apparatus
EP0937507A3 (fr) * 1998-02-20 2000-05-31 Isenmann Siebe GmbH Barre latérale pour tamis
WO2000066281A1 (fr) * 1999-05-03 2000-11-09 Usf Johnson Screens Pty Ltd Materiel de criblage
US6206200B1 (en) 1999-01-19 2001-03-27 United States Filter Corporation Mounting system for modular panels used in a screen deck
EP1303363A4 (fr) * 1999-04-26 2004-06-02 Kueper Gummi Tamis pour cribleuse
US6957741B2 (en) 2001-08-07 2005-10-25 Manfred Franz Axel Freissle Screening arrangement
EP1693118A2 (fr) 2005-02-22 2006-08-23 Ludwig Krieger Draht- Und Kunststofferzeugnisse Gmbh Support de tamis
CZ303783B6 (cs) * 2001-03-19 2013-05-02 Ludwig Krieger Draht- Und Kunststofferzeugnisse Gmbh Trídicí oblození a trídicí stroj s takovým oblozením
US8469199B2 (en) 2004-09-15 2013-06-25 Metso Minerals (Sweden) Ab Screen and screen element
WO2018065089A1 (fr) * 2016-10-05 2018-04-12 Hein, Lehmann Gmbh Machine de criblage à arbre de serrage, munie d'une fixation optimisée de la garniture de criblage
CN109622364A (zh) * 2019-01-06 2019-04-16 江苏亿亿和华筛分设备有限公司 一种防止物料粘附的筛板及使用该筛板的振动筛

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236530B1 (fr) * 1986-03-13 1989-10-18 Hein, Lehmann Aktiengesellschaft Panneau de criblage
US4960510A (en) * 1987-06-26 1990-10-02 Steinhaus Gmbh Screening apparatus having a screen grid with a plurality of exchangeable screen elements
DE3724246A1 (de) * 1987-07-22 1989-02-02 Wahl Verschleiss Tech Verschleissfestes sieb
DE4140210C2 (de) * 1991-12-05 1996-05-30 Kueper Gummi Siebdeck für eine Siebmaschine
DE9204413U1 (de) * 1992-04-01 1992-06-04 Isenmann Siebe GmbH, 7500 Karlsruhe Siebbelag auf einer gekrümmten Stützkonstruktion
DE4303892C2 (de) * 1993-02-10 2001-07-12 Ludwig Krieger Draht Und Kunst Siebbelag
DE19512082A1 (de) * 1995-04-03 1996-10-10 Hein Lehmann Trenn Foerder Siebmaschine
DE29619117U1 (de) * 1996-10-22 1996-12-19 Guschall, Dietmar, 57271 Hilchenbach Siebstrecke für mechanische Förderer
US5967336A (en) * 1997-09-02 1999-10-19 Southwestern Wire Cloth, Inc. Vibrating screen assembly with improved frame
US6634505B1 (en) 1999-04-26 2003-10-21 Durex Products, Inc. Sieve bed for a sifting machine
US6267246B1 (en) 2000-02-14 2001-07-31 Western Wire Works, Inc. Screening system for screening or diverting particulate material
DE10113401A1 (de) * 2001-03-19 2002-09-26 Ludwig Krieger Draht Und Kunst Siebbelag
DE10116424A1 (de) * 2001-04-02 2002-10-10 Hein Lehmann Trenn Foerder Vorrichtungen zum Abweisen, Stauen und/oder Führen von Siebgut auf einer Siebfläche
DE102005024236A1 (de) * 2005-05-25 2006-11-30 Isenmann Siebe Gmbh Siebfläche mit Stangenrost
DE102013010051B3 (de) * 2013-06-17 2014-07-31 Schenck Process Gmbh Siebbelag
BR112017015232B1 (pt) * 2015-01-16 2020-12-29 Sandvik Intellectual Property Ab cobertura alongada para suportar meio de peneiramento tensionado em um deck de peneira e deck de peneira
CN110479588B (zh) * 2019-08-29 2022-03-04 苏州嘉诺环境工程有限公司 一种筛板安装结构、筛板组件及筛分机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980555A (en) * 1973-08-24 1976-09-14 Screenex Wire Weaving Manufacturers Limited Replacable screen with frame
DE2802562A1 (de) * 1978-01-21 1979-07-26 Hein Lehmann Ag Siebboden
AT354957B (de) * 1977-02-15 1980-02-11 Hein Lehmann Ag Siebboden
DE2736662B2 (de) * 1977-08-13 1979-06-13 Hein, Lehmann Ag, 4000 Duesseldorf Siebboden
JPS567749A (en) * 1979-07-03 1981-01-27 Mitsui Toatsu Chem Inc Preparation of polymethylenepolyphenylpolycarbamate
DE3008931A1 (de) * 1980-03-08 1981-09-17 Hein, Lehmann AG, 4000 Düsseldorf Systemsiebboden
US4661245A (en) * 1982-12-09 1987-04-28 Fioris Pty Ltd. Screening system

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049262A (en) * 1988-11-23 1991-09-17 Galton Zanley F Modular system
WO1990005594A1 (fr) * 1988-11-23 1990-05-31 Western Wire Works, Incorporated Systeme modulaire
US5112475A (en) * 1990-08-06 1992-05-12 Conn-Weld Industries, Inc. Panel mounting system
US5372261A (en) * 1991-10-25 1994-12-13 Western Wire Works, Inc. System and method for screening or diverting particulate material
US5346053A (en) * 1992-02-28 1994-09-13 Dorn Lloyd A Modular screen system for screening deck
EP0567361A1 (fr) * 1992-04-24 1993-10-27 Giron Holding Système de fixation de panneaux modulaires de criblage sur une structure de maintien
FR2690489A1 (fr) * 1992-04-24 1993-10-29 Giron Holding Système de fixation de panneaux modulaires de criblage sur une structure de maintien.
US5829599A (en) * 1995-08-31 1998-11-03 Lettela Proprietary Limited Screening apparatus
DE19635156A1 (de) * 1996-08-30 1997-08-21 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben sowie danach hergestelltes Sieb
DE19635189A1 (de) * 1996-08-30 1998-03-05 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben sowie dadurch hergestelltes Sieb
DE19635189C2 (de) * 1996-08-30 1999-01-28 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben
DE19635156C2 (de) * 1996-08-30 1999-01-28 Voith Sulzer Stoffaufbereitung Verfahren zur Herstellung von Sieben
US6092286A (en) * 1996-08-30 2000-07-25 Lange; Werner Method to fabricate wires and wire fabricated thereby
WO1998033604A1 (fr) * 1997-02-04 1998-08-06 Svedala Trellex Ab Crible dote d'elements a toile de criblage allonges se chevauchant
EP0937507A3 (fr) * 1998-02-20 2000-05-31 Isenmann Siebe GmbH Barre latérale pour tamis
US6206200B1 (en) 1999-01-19 2001-03-27 United States Filter Corporation Mounting system for modular panels used in a screen deck
EP1303363A4 (fr) * 1999-04-26 2004-06-02 Kueper Gummi Tamis pour cribleuse
US6685028B1 (en) 1999-05-03 2004-02-03 Weatherford Australia Pty. Limited Screening equipment
WO2000066281A1 (fr) * 1999-05-03 2000-11-09 Usf Johnson Screens Pty Ltd Materiel de criblage
CZ303783B6 (cs) * 2001-03-19 2013-05-02 Ludwig Krieger Draht- Und Kunststofferzeugnisse Gmbh Trídicí oblození a trídicí stroj s takovým oblozením
US6957741B2 (en) 2001-08-07 2005-10-25 Manfred Franz Axel Freissle Screening arrangement
US7240801B2 (en) 2001-08-07 2007-07-10 Manfred Franz Axel Freissle Screening arrangement
AU2002300432B2 (en) * 2001-08-07 2008-02-14 Manfred Franz Axel Freissle Screening Arrangement
AU2002300432C1 (en) * 2001-08-07 2009-08-13 Manfred Franz Axel Freissle Screening Arrangement
US7604127B2 (en) 2001-08-07 2009-10-20 Manfred Franz Axel Freissle Screening arrangement
US7621406B2 (en) 2001-08-07 2009-11-24 Polydeck Screen Corporation Conversion kit for particulate screening system and related implementation methods
US8025153B2 (en) 2001-08-07 2011-09-27 Manfred Franz Axel Freissle Screening arrangement
US8469199B2 (en) 2004-09-15 2013-06-25 Metso Minerals (Sweden) Ab Screen and screen element
EP1693118A2 (fr) 2005-02-22 2006-08-23 Ludwig Krieger Draht- Und Kunststofferzeugnisse Gmbh Support de tamis
WO2018065089A1 (fr) * 2016-10-05 2018-04-12 Hein, Lehmann Gmbh Machine de criblage à arbre de serrage, munie d'une fixation optimisée de la garniture de criblage
US11198158B2 (en) 2016-10-05 2021-12-14 Hein, Lehmann Gmbh Flip-flow screener machine with optimised screen bottom fastening
CN109622364A (zh) * 2019-01-06 2019-04-16 江苏亿亿和华筛分设备有限公司 一种防止物料粘附的筛板及使用该筛板的振动筛

Also Published As

Publication number Publication date
DE3425485A1 (de) 1986-01-16
ATE37149T1 (de) 1988-09-15
NO163517C (no) 1990-06-13
EP0167999B1 (fr) 1988-09-14
DK314585D0 (da) 1985-07-10
DE3425485C2 (fr) 1991-01-10
AU586172B2 (en) 1989-07-06
DE3564912D1 (en) 1988-10-20
DK314585A (da) 1986-01-12
JPS6191376U (fr) 1986-06-13
ZA855136B (en) 1986-07-30
AU4481085A (en) 1986-01-16
ES287996Y (es) 1986-08-01
JPH0317976Y2 (fr) 1991-04-16
ES287996U (es) 1986-01-01
EP0167999B2 (fr) 1991-12-18
EP0167999A3 (en) 1986-06-25
NO852768L (no) 1986-01-13
NO163517B (no) 1990-03-05

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