EP0184551B1 - Dispositif pour fabriquer des plaques de construction en plâtre par voie sèche - Google Patents

Dispositif pour fabriquer des plaques de construction en plâtre par voie sèche Download PDF

Info

Publication number
EP0184551B1
EP0184551B1 EP85810559A EP85810559A EP0184551B1 EP 0184551 B1 EP0184551 B1 EP 0184551B1 EP 85810559 A EP85810559 A EP 85810559A EP 85810559 A EP85810559 A EP 85810559A EP 0184551 B1 EP0184551 B1 EP 0184551B1
Authority
EP
European Patent Office
Prior art keywords
mould
gypsum
moulding
plates
plugs
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
EP85810559A
Other languages
German (de)
English (en)
Other versions
EP0184551A1 (fr
Inventor
Werner Leu
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.)
JOST AG
Original Assignee
JOST 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 JOST AG filed Critical JOST AG
Priority to AT85810559T priority Critical patent/ATE59327T1/de
Publication of EP0184551A1 publication Critical patent/EP0184551A1/fr
Application granted granted Critical
Publication of EP0184551B1 publication Critical patent/EP0184551B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/04—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould
    • B28B3/06—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with one ram per mould with two or more ram and mould sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/08—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould

Definitions

  • the invention relates to a device for the production of gypsum board in a dry way, with juxtaposed mold boxes with a rectangular, free internal cross section, each mold box consisting of two plane-parallel plates and two mold rails which lie laterally and internally on the plates to close the mold box laterally and the inner plane-parallel plates simultaneously form the front side of the one and the rear side of the next molding box, a corresponding number of parallel lower press rams, each of which fits into and protrudes into the inner cross section of a molding box, a relative movement between the lower press rams and the molding box being possible, a corresponding number of parallel upper press rams, each of which fits into the inner cross section of a molding box and can be inserted therein, a relative movement between the upper press ram and the molding box being possible, the pressing surface n the upper and lower press rams are provided with longitudinally extending grooves or combs, further drive means for moving the plates towards or away from one another and with means for driving at least the upper press
  • gypsum boards which contain a few tenths by weight by weight of a reinforcing material such as glass fibers, are normally produced by the wet process in gypsum slurry casting machines.
  • Such wet casting machines are e.g. in FR-A-2 220 90 and FR-A-1 206 344. They are used only for the production of gypsum building boards by wet means, are generally known, have no pressing members for the boards and cannot form a model for the invention.
  • reinforced gypsum the water content of which is usually between that of the hemihydrate and that of the anhydrite, is used to prepare reinforcing materials such as glass fibers, possibly other additives such as gypsum residues, hardening retarders or accelerators, and excess water, a pourable, aqueous gypsum pulp.
  • reinforcing materials such as glass fibers
  • possibly other additives such as gypsum residues, hardening retarders or accelerators, and excess water, a pourable, aqueous gypsum pulp.
  • the molds of a molding machine where it solidifies in a few minutes, and dries the plasterboard obtained from the molds in long, continuous drying ovens.
  • the hardening occurs, which completes the initial solidification.
  • needle-shaped calcium sulfate double hydrate crystals (CaS0 4 - 2H z O) are usually formed, the matting of which is responsible for the strength of the plates.
  • the molding press provided for the production of components, for example bricks, according to GB-A-2 025 309 does indeed have work cycles which are comparable to those which also occur during operation of the device according to the invention. However, it was not foreseeable that this general way of working could also be adapted to the production of gypsum boards in a dry way.
  • plasterboard cannot be manufactured with the required comb and groove connection elements.
  • the device specified in FR-A-996 910 is not used for the production of gypsum boards and has no mold box which can be moved down during the pressing process.
  • the object of the present invention was a cyclically operated machine for the fast and efficient production of gypsum building boards in a dry way, open, with connecting elements on the four narrow sides and otherwise smooth surfaces, with a density of 1.0 kg / I ⁇ 10%, which can be measured anywhere in the plate by volume, with dimensional tolerances of the order of millimeters, and in which the drying process defined above is to be carried out, with the risk of destruction of the connecting profiles formed on the plates being reduced to a minimum during molding .
  • the inventive device of the initially defined type is characterized by the features according to the characterizing part of claim 1.
  • the configuration of the upper press rams according to the invention ensures problem-free shaping.
  • the base 10 is either the factory floor or a carousel on which several presses are mounted for the purpose of performing a cycle operation.
  • the hydraulic pistons 20, 20 ' are connected to the molding box 16 via claws 22, 22'.
  • the molding box 16 is formed in the embodiment shown for the simultaneous production of 5 gypsum boards with a thickness of 8 mm.
  • the walls 24 in the interior of the molding box 16 have only a significantly smaller thickness than the two outer walls 26, because the pressure acts on both sides of the former.
  • the delimiting elements of the molding box - i.e. the walls 24 and 26 and the shaped rails 28 - not firmly connected to one another, but means are provided for horizontally compressing and relieving the mold box formed by the aforementioned limiting elements, the limiting elements being slightly, i.e. can separate from each other by a small amount.
  • the limiting elements 24, 26 and 28, which form the molding box, are held together by tie rods 30 (only the center line of which is shown), which are drawn into the corresponding holes, not shown, of the limiting elements with a slight clearance.
  • the tie rods 30 are provided with nuts 32, and on the other side, single-acting hydraulic hollow piston cylinders 34 are pushed over their ends and secured with pairs of locknuts 36.
  • the outer bell of the cylinder 34 is supported against the adjacent cover plates 26 and its inner piston against the lock nuts 36. These are set in such a way that the required and maximum permissible shape play is guaranteed.
  • the pressure of the hydraulic cylinders 34 must be significantly higher than the pressure in the molding box. After the gypsum boards have been pressed, the hydraulic cylinder 34 is relieved and each part of the molding box can move away from the neighboring part by a few tenths of a millimeter, which makes molding the boards very easy.
  • the lower press rams 38, the upper press rams 40 and the shaping rails 28 are provided in the center with a trapezoidal profile 42 or 43, which represents either a strip (42) or a groove (43). These profiles are used to provide the finished gypsum boards with connecting elements.
  • the lower ram 38 (Fig. 2) are fixed; in the idle state, when the molding box is pulled all the way down, the press punches protrude a little from the molding box; a finished plasterboard 44 can therefore be easily removed from the machine.
  • the upper press punches 40 are fastened with supports 46 to a solid plate 48 which is guided laterally in a vertical rail 50 (FIG. 1).
  • the plate 48 is connected to the vertical high pressure hydraulic cylinder 52, which in the illustrated embodiment can exert a force of 150 t (1.5 MN). All of these components are fastened in or on a stable frame 54.
  • Other secondary devices such as power and control lines, control cabinets, measuring instruments, program units, etc. are not shown; neither do they form part of the invention. Their presence and their arrangement are familiar to the person skilled in the art.
  • FIG. 4 shows on an enlarged scale and, in the case of 5 cm thick sheets, in natural size, a section of a preferred embodiment of the upper press punches 40.
  • the comb strip which is formed by the groove 43 of the upper press die 40, sometimes breaks off.
  • the groove 40 is rectangularly extended upwards.
  • the strip 58 is held by screws 62, guided and limited in stroke, which go with play through corresponding holes in the body of the punch 40.
  • the machine At the beginning of manufacture (and at the end of a previous manufacturing cycle) the machine is in the position shown in solid lines on the left in Fig. 2, i.e. the upper dies 40 'are up, the mold box 16 is down, and the molds are empty.
  • the molding box is now moved upward in that the hydraulic pistons 20, 20 'are extended.
  • the position of the molding box (reference numeral 16 ') shown in broken lines on the left in FIG. 2 is thus achieved.
  • the mold box is filled to the top with a loose, crumbly mass consisting of an intimate mixture of burnt gypsum, a voluminous filler, reinforcing materials (e.g. glass fibers) and at least the amount of water required for gypsum hydration, but at most its double .
  • the shape is smoothed off at the top. Additional devices can be used for this.
  • the mixing recipe and the mixing process as well as the filling into the molds can be directed in such a way that compression to about half the volume leads to the desired plasterboard.
  • the upper motor 52 is then started and the upper rams 40 sink into the cavities of the molding box. If the molding motors 12, 14 are set in such a way that they allow a free, weight-balanced movement of the molding box - this can be achieved with a correspondingly set (not shown) hydraulic overflow valve - the molding box moves downwards against and over the fixed lower molding dies 38 with a displacement which, because of the approximately uniform friction everywhere, is half of that of the upper ram 40.
  • the machine At the end of the pressing process, the machine is in the position according to FIG. 2, right side, broken line.
  • the plate 44 produced has the correct size and the desired properties with regard to surface quality, homogeneity, density, hardness etc. It can be shaped immediately without waiting.
  • the mold box 16 is moved into its lowest position with the help of the motors 12 and 14.
  • the motor 52 is activated and lifts the upper ram 40 into the uppermost position.
  • the position drawn in solid lines on the left in FIG. 2 is thus achieved.
  • a clamp transport device not shown, which is known per se and is suspended on a crane, grips the plates 44 laterally and places them on a suitable base next to the machine.
  • the molding box should be opened slightly.
  • the hydraulic pressure of the cylinders 34 (Fig. 3) is released and the elements of the mold can move a little apart.
  • pressure is again applied to the cylinders 34 and the molding box 16 closes.
  • Shaping is further made considerably easier and the profile strips on thin plasterboards are prevented from breaking off or breaking off if the shaped rails 28 (FIG. 3) are arranged to be pivoted out laterally in groups, namely about a horizontal pivot axis 64, as indicated schematically in FIG. 5 is.
  • the swivel angle can range from a few degrees to approx. 45 °, depending on necessity and space.
  • this phenomenon is eliminated if the interior of the shaped rails 28 is made concave, as is shown in FIG. 5 on a shaped rail at 66. A further significant improvement in such cases has resulted if the molding box 16 is driven and moved separately during the pressing process.
  • a preferred mode of operation which is shown in FIG. 5 as three phases, is that in a first phase, with the upper pressing dies 40 descending, the mold box is easily moved down with the motors 12 and 14 working accordingly, ie the mold box is at rest compared to the upper stamps. As soon as about 2/3 of the required stroke has been completed (the production of plates with a height of 50 cm in a mold box filled to 100 cm requires a stroke of 50 cm), the mold box is held in its position and the upper press punches continue to work against the bottom and go in Mold box down, the latter remains at rest compared to the lower press rams 38.
  • These phases are shown schematically with the beginning, middle and end in FIG. 5.
  • This mode of operation leads to absolutely homogeneous plates with a standard density of 1000 ⁇ 100 g / l and the dimensions 667x500xd mm ⁇ 1 mm, where d is 40, 60, 80, 100, 120, 140 mm, starting from a mixture of 430 parts by volume pearlite , a swollen volcanic rock, 66 parts by volume of water, 300 parts by volume of high-grade gypsum with a residual water content of 4.3% by weight, and 0.3 parts by volume of glass staple fibers, which had been intimately mixed for about 1 1/2 minutes beforehand.
  • the press time in the machine is short.
  • the plates produced can be removed approx. 1 minute after filling. They can be used and shipped within a short period of time and are almost completely full. Some weight will be lost in the course of 1-2 weeks due to the evaporation of water if there was excess water.
  • the path that the punch (s) traverse in the mold depends on the condition, i.e. especially the density of the filled starting mixture. This way is usually 40 to 60% of the height of the molding box, usually about 50%.
  • the pressures with which the crumbly mass has to be pressed together in order to form technically usable gypsum boards are in the order of more than 1.5 MPa, mostly 2 to 3.5 MPa for boards of 10 cm thickness, from 3 to 4, 5 MPa for 8 cm thick plates and from 4.5 to 5.5 MPa for 6 cm thick plates.
  • the pressing pressure thus depends on the plate thickness, since the crumbly gypsum mass appears to adhere to the walls of the molding box, which has a greater effect on narrow plates than on thicker ones.
  • the specified pressures are the final pressures in a mold for a plate, with a stroke from 1000 to 500 mm and with a mold length of 667 mm.
  • the plates obtained have compressive strengths of approximately 4.5 N / mm 2 , a modulus of elasticity of approximately 1.7 kN / mm 2 and a bending tensile strength of approximately 3.6 N / mm 2 .
  • the device according to the invention allows the quick and easy production of ready-to-use gypsum boards after a short time, which in their properties of use usually surpass the known boards produced by wet methods, where they are not equivalent.
  • the individual parts of the machine can be adapted to the respective requirements.
  • the molding box can have 5 or more, but also fewer, mold cavities.
  • the other dimensions, the shapes of the connecting elements, etc. can also be easily adapted to the requirements of technology or the market.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Materials For Medical Uses (AREA)
  • Inorganic Insulating Materials (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Claims (2)

1. Dispositif pour fabriquer des plaques de construction en plâtre par voie sèche comportant des chassis de moulage (16) disposés côte et dont la section transversale intérieure libre est de forme rectangulaire, chaque chassis de moulage (16) étant constitué de deux plaques (24) disposées dans des plans parallèles et de deux blocs de moulage (28) disposés latéralement et à l'intérieur des plaques (24), pour fermer les chassis de moulage depuis le côté, les plaques parallèles intérieures (24) constituant à la fois la face avant d'un chassis de moulage et la face arrière du chassis adjacent; un nombre correspondant de matrices inférieures (38) parallèles, dont chacune passe au travers de la section transversale intérieure d'un chassis (16) dans lequel elle fait saillie et où un mouvement relatif de la matrice inférieure (38) par rapport au chassis (16) est posssi- ble; un nombre correspondant de matrices supérieures parallèles (40), dont chacune passe au travers de la section transversale intérieure d'un chassis (16) qu'elle peut traverser et où un mouvement relatif de la matrice supérieure (40) par rapport au chassis (16) est possible; les surfaces de moulage des matrices supérieures et inférieures étant pourvues dans leur milieu de rainures, respectivement de nervures longitudinales; des moyens de commande à distance (32, 34, 36), pour rapprocher les plaques (24) l'une de l'autre, respectivement pour les éloigner; et des moyens (48, 50, 52) de commander au moins les matrices supérieures (40) en direction des matrices inférieures (38), caractérisé en ce que l'un des blocs de moulage latéraux (28) comporte dans sa partie centrale une creusure (43) dirigée à l'intérieur du chassis et l'autre bloc de moulage (28) comporte dans sa partie centrale une languette (42), apte à former lesdits profils d'assemblage sur le chant opposé de la plaque de plâtre; en ce que lesdites languettes (42) dirigées à l'intérieur du chassis sont prévues sur chcune des matrices inférieures (38) et les creusures (43) sur chacune des matrices supérieures (40) et en ce que le fond des creusures (43) de chaque matrice supérieure (40) est constitué par une baguette (58) de limitation de course déplaçable sous l'action de ressorts.
2. Dispositif selon la revendication 1, caractérisé en ce que l'intérieur des panneaux latéraux du chassis (16) présente une forme concave (66) telle que la longueur intérieur du chassis s'élargisse d'bord puis se rétrécisse du haut en bas (Fig. 5).
EP85810559A 1984-11-26 1985-11-25 Dispositif pour fabriquer des plaques de construction en plâtre par voie sèche Expired - Lifetime EP0184551B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810559T ATE59327T1 (de) 1984-11-26 1985-11-25 Vorrichtung zur herstellung von gips-bauplatten auf trockenem wege.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5627/84A CH665996A5 (de) 1984-11-26 1984-11-26 Vorrichtung zur herstellung von gips-bauplatten auf trockenem wege.
CH5627/84 1984-11-26

Publications (2)

Publication Number Publication Date
EP0184551A1 EP0184551A1 (fr) 1986-06-11
EP0184551B1 true EP0184551B1 (fr) 1990-12-27

Family

ID=4296767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810559A Expired - Lifetime EP0184551B1 (fr) 1984-11-26 1985-11-25 Dispositif pour fabriquer des plaques de construction en plâtre par voie sèche

Country Status (4)

Country Link
EP (1) EP0184551B1 (fr)
AT (1) ATE59327T1 (fr)
CH (1) CH665996A5 (fr)
DE (1) DE3581177D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824772A1 (fr) * 2001-05-16 2002-11-22 Francois Baratin Procede et dispositif de fabrication d'elements de construction

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR996910A (fr) * 1949-09-01 1951-12-28 Procédé et appareil de fabrication mécanique en série de carreaux ou éléments de construction
CH346009A (fr) * 1957-08-21 1960-04-30 Gonano Ezio Plaque de plâtre ou matière analogue pour la construction de cloisons minces, procédé de fabrication de cette plaque et moule pour la mise en oeuvre de ce procédé
US3309750A (en) * 1964-11-09 1967-03-21 E J Lavino & Co Apparatus and method for manufacturing brick
US3809566A (en) * 1972-05-26 1974-05-07 O Revord Gypsum-based building product and method of producing same
FR2220990A5 (en) * 1973-03-05 1974-10-04 Lambert Freres & Cie Mould and method of mfg. plaster tiles - mould has pivotable sides and expandable base controlled by jacks
DE2830779C2 (de) * 1978-07-13 1984-03-08 Eckhard 4512 Wallenhorst Schulz Hydraulische Doppeldruckpresse

Also Published As

Publication number Publication date
DE3581177D1 (de) 1991-02-07
ATE59327T1 (de) 1991-01-15
EP0184551A1 (fr) 1986-06-11
CH665996A5 (de) 1988-06-30

Similar Documents

Publication Publication Date Title
DE2932406C2 (de) Verfahren und Vorrichtungen zum Strangpressen eines Gemenges auf pflanzlichen Kleinteilen und Bindemitteln
DE69112556T2 (de) Verfahren zur Herstellung eines gemusterten Formkörpers.
EP0294326A1 (fr) Dispositif pour la fabrication de pierres moulées
EP0086899A1 (fr) Procédé et dispositif de moulage par compression d'un objet de forme, en particulier pour former une palette constituée d'une ou de plusieurs pièces d'une entretoise servant de support ou d'un profilé de poutre de charge
DE3780811T2 (de) Verfahren zur herstellung eines ein hydraulisches bindemittel enthaltenden bauelements, das erhaltene element und konstruktionsverfahren mittels solcher elemente.
DE69821378T2 (de) Maschine zur herstellung von aus erde geformten blöcken
DE2201550A1 (de) Verfahren und Vorrichtung zur Herstellung von Betonteilen
EP0184551B1 (fr) Dispositif pour fabriquer des plaques de construction en plâtre par voie sèche
EP0406783B1 (fr) Procédé de fabrication d'objets creux à partir de fibres lignocellulosiques
DE2408503A1 (de) Verfahren und vorrichtung zur herstellung von kunststeinen und -platten
DE2805153B2 (de) Hydrothermalgehärteter Lochstein aus Kalk und kieselsäurehaltigem überwiegend amorphem Leichtzuschlag und ein Verfahren zu dessen Herstellung
DE727061C (de) Verfahren und Einrichtung zur Herstellung von Platten, insbesondere aus Holzwolle und Zement
DE4140012A1 (de) Presse zum vibrationsverdichten von mischungen aus koernigen, steinigen oder keramischen materialien in form von platten oder bloecken
DE2436663B2 (de) Verfahren und Vorrichtung zur Herstellung von Gegenständen aus Kunststoff mit hohem Füllstoff anteil
DE19622001A1 (de) Vorrichtungen und Verfahren zur Herstellung von Betonsteinen
EP0610529B1 (fr) Procédé et dispositif pour la fabrication aux dimensions précises d'éléments en forme de panneau
EP0161374B1 (fr) Installation et procédé pour la fabrication de plaques de construction en plâtre
DE102006030775B3 (de) Vorrichtung und Verfahren zum Herstellen von Steinformlingen für Mauerwerksteine, insbesondere Kalksandsteine
DE2833427A1 (de) Bauteil, insbesondere wandbauplatte, aus porengips sowie verfahren und vorrichtung zu seiner herstellung
DE3724641A1 (de) Verfahren und vorrichtung zur maschinellen herstellung eines waermedaemmenden leichtbeton-mauersteins
AT352963B (de) Plattenfoermiges bauelement sowie vorrichtung und verfahren zu dessen herstellung
DE736563C (de) Vorrichtung zur Herstellung von Hohlblockkoerpern fuer Waende oder Decken
DE1814230A1 (de) Hydraulische Presse zur Herstellung von Baukoerpern
DE2522013C3 (de) Verfahren zum Herstellen von Baufertigteilen und Vorrichtung zum Durchführen des Verfahrens
AT358974B (de) Verfahren und vorrichtung zur herstellung von formkoerpern

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE FR IT NL

17P Request for examination filed

Effective date: 19861003

17Q First examination report despatched

Effective date: 19880518

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE FR IT NL

REF Corresponds to:

Ref document number: 59327

Country of ref document: AT

Date of ref document: 19910115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3581177

Country of ref document: DE

Date of ref document: 19910207

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19921014

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19921019

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19921022

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19921028

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19921130

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19931125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19931130

BERE Be: lapsed

Owner name: JOST A.G.

Effective date: 19931130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940802

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST