EP0188452B1 - Dispositif pour la fabrication de gabarits de decoupage - Google Patents

Dispositif pour la fabrication de gabarits de decoupage Download PDF

Info

Publication number
EP0188452B1
EP0188452B1 EP19850902951 EP85902951A EP0188452B1 EP 0188452 B1 EP0188452 B1 EP 0188452B1 EP 19850902951 EP19850902951 EP 19850902951 EP 85902951 A EP85902951 A EP 85902951A EP 0188452 B1 EP0188452 B1 EP 0188452B1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting table
roller
templates
discharge
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
EP19850902951
Other languages
German (de)
English (en)
Other versions
EP0188452A1 (fr
Inventor
Wolf Merz
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.)
Individual
Original Assignee
Individual
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=4250998&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0188452(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT85902951T priority Critical patent/ATE53327T1/de
Publication of EP0188452A1 publication Critical patent/EP0188452A1/fr
Application granted granted Critical
Publication of EP0188452B1 publication Critical patent/EP0188452B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/3806—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface
    • B26F1/3813—Cutting-out; Stamping-out wherein relative movements of tool head and work during cutting have a component tangential to the work surface wherein the tool head is moved in a plane parallel to the work in a coordinate system fixed with respect to the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work by suction

Definitions

  • the invention relates to a device for producing cutting templates with a cutting table, with a supply roller provided on one end part of the cutting table for a flat sheet-like template material to be guided over the cutting table, with a cutting device located above the cutting table for separating the individual cutting templates from the remaining part of the stencil material, with a device for selectively holding the stencil material by negative pressure on the cutting table and with an air-permeable and web-shaped transport pad for the stencil material which can be displaced on the cutting table and which can be deflected via at least one roller attached to the cutting table.
  • FR-A-2 490 136 The invention relates to a device for producing cutting templates with a cutting table, with a supply roller provided on one end part of the cutting table for a flat sheet-like template material to be guided over the cutting table, with a cutting device located above the cutting table for separating the individual cutting templates from the remaining part of the stencil material, with a device for selectively holding the stencil material by negative pressure on the cutting table and with an air-permeable and web-
  • an automatically controllable cutting device for a slack flat material which has a conveyor table with an endless conveyor belt in order to transport sections of the slack flat material for cutting on the table.
  • a tool slide with a cutting tool is arranged above the supporting surface of the table, with which cuts are cut from the slack flat material located on the supporting surface.
  • the endless conveyor belt encloses a vacuum chamber. Due to the vacuum in this vacuum chamber, a vacuum acts in the material, whereby it is held in a compressed form on the wing for cutting.
  • the generic device is known from FR-A-2 490 136. It has a cutting table, via which an air-permeable transport pad is guided from a unwinding roll to a deflection roll at the opposite end of the cutting table and is wound onto a winding roll. Devices for generating a vacuum are assigned to the cutting table in such a way that this vacuum can have a suction effect on the sheet-like stencil material via the air-permeable transport pad, which is led from an unwinding roller over the cutting table to a stencil removal table. A cutting device is arranged above the cutting table, with which the templates are cut from the template material which is held on the cutting table by suction from the transport pad.
  • the rewinding reel With such a device, if the transport pad is completely unwound from the unwinding reel, the rewinding reel must be used instead of the unwinding reel, which is labor intensive. In addition, the individual templates must be removed by hand and the waste material removed by hand. Despite the computer-controlled cutting of the templates, the known device can thus only be operated with the help of an operator who is constantly present.
  • the object underlying the invention is now to design the device of the type mentioned in such a way that it can work fully automatically without manual operation.
  • the transport pad is a self-contained material loop that wraps around the support surface of the cutting table and is guided around rollers by a tensioning device, and that the opposite end section of the cutting table is equipped with a roller for winding up the waste of the Stencil material or with a device for processing the waste by cutting or with a press, and that that end section of the cutting table where the cutting templates are obtained has a collecting device for the cutting templates, which is arranged on a slanted plate that slopes away from the trailing edge of the cutting table is formed with a stop on its lower edge.
  • the cutting table expediently has a drive device for the transport base which can be driven in accordance with the mode of operation of the cutting device.
  • the drive device preferably also serves to drive the waste take-up roller or the preparation device for the waste.
  • the device for producing cutting templates which is shown in the accompanying drawing, has a cutting table 1, on which there is the flat material 2 from which cutting templates are made. Above the table 1 there is a device 3 for separating those parts of the flat material 2 from the rest of the same which represent the cutting templates.
  • Said separation device 3 contains a bridge 4, which is approximately U-shaped in front view. Through the vertical legs of this bridge 4, of which only the front leg 5 of the bridge 4 can be seen in the drawing, horizontally lying guide rods 6 pass through, which are attached laterally to the cutting table 1 and which run parallel to the working surface of the cutting table 1.
  • the web 7 connecting the vertical legs 5 is located above the working surface of the table 1 and extends transversely to the longitudinal direction of the table 1 a cutting device 8 is movable in said web 7.
  • This cutting device 8 contains a support part 9, which is in engagement with the bridge 7 and to which a cutting head 10 is attached in a vertically movable manner.
  • the section of the cutting head 10 facing the cutting table 1 is provided with a cutting tool 11.
  • This cutting tool 11 can be designed, for example, as a milling cutter, graver or knife, or it can act on the template material electroerosively, with an arc, etc.
  • the type of cutting tool 11 largely depends on the type of template material 2 used.
  • the cutting table 1 is further provided with a control device (not shown) which controls the movements of the bridge 4 on the guide rods 6 along the cutting table 1 and the cutting device 8 along the bridge 4 in accordance with the shape of the desired cutting template. Since such control devices for the production of cutting templates are generally known, a more detailed description of this control device is omitted here.
  • the present device also has a transport pad 15 which can be moved along the cutting table 1 and which lies directly on the surface of the cutting table 1 and on which the template material 2 rests in the region of the table surface.
  • this transport document 15 is a self-contained, i.e. Endless structure that wraps around the support surface of the cutting table 1.
  • the transport pad 15 is shown in the drawing with the aid of a dash-dotted line in order to be able to distinguish this pad 15 in the area of the working surface of the cutting table 1 from the other parts shown here.
  • the transport pad can be made of an airtight material, e.g. be made of cardboard, plastic, paper, metal foil, etc., such a transport pad (15) having continuous openings.
  • the transport pad can also be made of a textile material, such as from a fabric or from a nonwoven.
  • the cutting table 1 is provided with rollers 16, 17, 18 and 19. over which the transport pad 15 is guided. At least one of these rollers 16 to 19 can be driven with the aid of a drive device 20, which is only indicated in the drawing.
  • a tensioning device 21 is also provided for the transport pad 15, which has a tensioning roller 22. This tension roller 22 is located above the lower left guide roller 18 for the transport pad 15. The chip roller 22 can be pressed against the outside of the transport pad 15 with the aid of a device (not shown), as a result of which the desired tension in the pad 15 can be achieved.
  • the transport pad mentioned is a web which is rewound from one end part of the cutting table 1 to the opposite end part of the same.
  • the one end part of the cutting table 1 is provided with a supply roller for the web-shaped transport pad.
  • the opposite end of the cutting table is then equipped with a roller for winding up the transport document.
  • the rollers just mentioned are driven by the drive device 20 for the transport pad 15.
  • the template material 2 already mentioned has the shape of a web in the example shown.
  • a supply roll 25 with the stencil material 2 that has not yet been processed Transport pad 15 rests and where it is processed using the cutting device.
  • a further roller 26 on which the rest of the template material 2 that has already been processed, i.e. the waste 27 is wound up.
  • the winding roller 26 contains a shaft 28, the ends of which each slide in a fork 29 and which can also be driven by means of the drive device 20 already mentioned. Since the take-up roller 26 is merely resting in the forks 29, it can be quickly removed from the device and in its place an empty shaft 28 can simply be inserted into the device.
  • Two of the guide rollers 16 and 17 already mentioned for the transport pad 15 are located in the upper region of the cutting table 1 in such a way that the tangent to the respective guide rollers 16 and 17, respectively, which runs horizontally and touches the uppermost part of the guide rollers 16 and 17 mentioned, in the plane of the working surface of the cutting table 1 or a little below.
  • Such a position of the upper guide rollers 16 and 17 enables the transport pad 15 to be guided over the working surface of the table 1 without problems.
  • the remaining two guide rollers 18 and 19 for the transport pad are located in the lower part of the cutting table 1 and they serve above all to return the Transport pad 15.
  • the tensioning roller 22 is connected upstream of the lower left guide roller 18.
  • This collecting device 30 contains an obliquely arranged plate 32 falling from the exit edge 31 of the cutting table 1, the lower edge part of this plate 32 being provided with a stop 33.
  • This stop 33 is approximately at right angles to the base plate 32 mentioned and it is relatively high so that several layers of cutting templates can rest on this stop 33.
  • the entire working surface of the cutting table 1 is provided with transverse air passages 34, of which only two such passages are shown in the drawing.
  • the upper The mouth of the respective passage is located under the transport pad 15.
  • the passages 34 open into a collecting chamber 35 located under the working surface of the table 1, which is connected via a line 36 to a device 37 for generating negative pressure in the collecting chamber 35 and thus also in the passages 34 is connected.
  • the operation of the cutting device 3 is controlled according to the desired shape of the cutting templates. This is done in a known manner using a computer.
  • the front end of the web 2 made of the stencil material 2 is guided up to the shaft 28 for the winding roller 26, where this front end of the web 2 is fastened.
  • the greater part of the material web 2, which is located between the two rollers 25 and 26, rests on that section of the transport pad 15 which lies on the working surface of the cutting table 1.
  • the device 37 for generating negative pressure can now be put into operation, so that air is first extracted from the area below the transport pad 15. Since the base 15 is permeable to air, the air that is located between the stencil material 2 on the table 2 and the transport base is also extracted. The web 2 made of the template material now adheres firmly to the transport base 15 and thus also to the table 1. The cutting templates can now be cut out of the web-shaped material 2.
  • the mode of operation of the separating device 3 is programmed in such a way that the separating device 3 can move as far as possible over the entire width and length of the cutting table 1 in order to cut out cutting templates from the template material 2. Here, as little waste as possible 27 should arise.
  • the vacuum device 37 is first switched off so that the atmospheric pressure can build up again between the flat material 2 on the table 1 and the table surface.
  • the drive device 20 for the transport pad 15 and for the take-up roller 26 for the waste 27 is put into operation.
  • the material web 2 and also the transport pad 15 now move in the direction towards the winding roller 26, the waste 27 reaching this roller 26 hanging freely.
  • the transport pad 15 is sharply deflected downward, while the waste 27 moves approximately in the same direction to the take-up roller 26.
  • the cut-out cutting templates separate from the remaining part of the material web 2 and they fall into the collecting device 30 for the latter.
  • the drive device 2 for the transport pad 15 and the winding roller 26 is switched off and the vacuum device 37 can be switched on in order to be able to produce a new set of cutting templates .
  • a device for processing the waste 27 by cutting can be provided. This device can also be driven by the device 20 for driving the transport pad 15.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Details Of Cutting Devices (AREA)
  • Control Of Cutting Processes (AREA)

Abstract

Le dispositif comprend une table de découpage (1) sur laquelle se trouve un matériau plan (2) servant à confectionner le gabarit de découpage. Un dispositif supplémentaire (3) disposé au-dessus de la table de découpage (1) permet de séparer les gabarits de découpage individuels du reste du matériau plan (2). Des moyens à vide (34 à 37) servent au maintien à choix du matériau (2) sur la table. La table (1) porte, au-dessous du matériau (2), un transporteur (15) à bande perméable à l'air communiquant au moyen de passages (34) avec une pompe à vide (37). Un dispositif de réception (30) monté à l'arrière de la table (1), reçoit les gabarits de découpage terminés.

Claims (3)

1. Dispositif pour la fabrication de patrons découpés, comportant une table de coupe (1), ainsi qu'un rouleau d'alimentation (25), prévu à la première partie d'extrémité de la table de coupe (1), pour le stockage d'un matériau (2) en bande plane, pour les patrons, à faire passer sur la table de coupe (1 ), ainsi qu'un mécanisme de coupe (3), qui se trouve au-dessus de la table de coupe (1), pour séparer les différents patrons découpés d'avec le reste du matériau des patrons, ainsi qu'un mécanisme (34,35,36,37) pour maintenir à volonté le matériau des patrons (2) par dépression sur la table de coupe (1) et ainsi qu'un support de transport (15) du matériau des patrons (2), qui peut coulisser sur la table de coupe (1 ), est perméable à l'air et en forme de bande et qui peut changer de direction au moyen d'au moins un rouleau (17) rapporté sur la table de coupe (1), caractérisé en ce que le support de transport (15) est une bande de matériau sans fin, passant autour de la surface d'appui de la table de coupe (1) et guidée autour de rouleaux (16, 17, 18, 19) par l'intermédiaire d'un mécanisme de tension (21); et en ce que la partie d'extrémité opposée de la table de coupe (1) est équipée d'un rouleau (26) pour enrouler la chute (27) du matériau (2) pour les patrons ou d'un mécanisme pour traiter la chute (27) en la séparant ou d'une presse; et en ce que la partie d'extrémité de la table de coupe (1) où tombent les patrons découpés présente, pour recueillir les patrons découpés, un dispositif de réception (30) qui est formé d'une plaque disposée obliquement et en pente descendante depuis le bord de sortie (31) de la table de coupe (1) avec une butée (33) à sa partie de bordure inférieure.
2. Dispositif selon la revendication 1, caractérisé en ce que la table de coupe (1) présente, pour le support de transport (15), un mécanisme d'entraînement (20) qui peut être lui-même entraîné en concordance avec le mode de fonctionnement du mécanisme de coupe (3).
3. Dispositif selon la revendication 2, caractérisé en ce que le mécanisme d'entraînement (20) sert également pour l'entraînement du rouleau (26) d'enroulement de la chute ou pour le mécanisme de traitement de la chute (27).
EP19850902951 1984-07-04 1985-07-01 Dispositif pour la fabrication de gabarits de decoupage Expired - Lifetime EP0188452B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85902951T ATE53327T1 (de) 1984-07-04 1985-07-01 Einrichtung zur herstellung von schnittschablonen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3208/84 1984-07-04
CH320884 1984-07-04

Publications (2)

Publication Number Publication Date
EP0188452A1 EP0188452A1 (fr) 1986-07-30
EP0188452B1 true EP0188452B1 (fr) 1990-06-06

Family

ID=4250998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850902951 Expired - Lifetime EP0188452B1 (fr) 1984-07-04 1985-07-01 Dispositif pour la fabrication de gabarits de decoupage

Country Status (3)

Country Link
EP (1) EP0188452B1 (fr)
DE (1) DE3578049D1 (fr)
WO (1) WO1986000559A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361376A3 (fr) * 1988-09-30 1991-09-11 The Boeing Company Système de découpage et de distribution automatique de matière composite et procédé
EP0387371B1 (fr) * 1989-03-14 1994-07-27 Wolf Dieter Merz Procédé et dispositif de coupe d'éléments pour vêtements
CN102990715A (zh) * 2012-10-29 2013-03-27 茅惠杰 一次性心电电极片裁切机构
DE102019107586B4 (de) * 2019-03-25 2023-03-30 Held Systems Gmbh Abnahmevorrichtung zum automatisierten Abnehmen von Gewebematerialteilen, ein Verfahren zum automatisierten Abnehmen von Gewebematerialteilen und eine Produktionsanlage mit einer Fördereinrichtung und einer Abnahmevorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE21718E (en) * 1941-02-18 Take-off mechanism
US3592091A (en) * 1970-06-15 1971-07-13 Allamatic Corp Diecutter
DE3034621A1 (de) * 1980-09-13 1982-05-06 Aristo Graphic Systeme Gmbh & Co Kg, 2000 Hamburg Verfahren und schneidvorrichtung zur herstellung von zuschnitten
US4476756A (en) * 1982-04-12 1984-10-16 Gerber Garment Technology, Inc. Apparatus for working limp sheet material on a conveyor

Also Published As

Publication number Publication date
WO1986000559A1 (fr) 1986-01-30
EP0188452A1 (fr) 1986-07-30
DE3578049D1 (de) 1990-07-12

Similar Documents

Publication Publication Date Title
DE69016067T2 (de) Verfahren und Vorrichtung zum Bilden eines neuen Stapels nach dem Abnehmen von einem fertigen Stapel, in einer, insbesondere einem Printer zugeordneten, Stapelbildungsmaschine.
DE69517065T2 (de) Vorrichtung und Verfahren zum Zuführen von Gewebeabdeckfolie zu einer Schneidemaschine
EP1245729B1 (fr) Dispositif de transfert d'une bande de papier
EP0212246B1 (fr) Dispositif pour changer la direction du transport de feuilles de papier
DE3034621A1 (de) Verfahren und schneidvorrichtung zur herstellung von zuschnitten
WO2002022368A1 (fr) Dispositif d'impression a jet d'encre
EP0288814B1 (fr) Dispositif pour subdiviser une bande de papier sans fin avec un plissement en accordéon
EP0347573B1 (fr) Méthode et dispositif pour approcher le début d'une bande de matériau,en particulier d'une bande de papier,par en bas vers un cylindre de machine à enrouler
EP0253165B1 (fr) Dispositif d'alimentation de feuilles
CH680363A5 (fr)
DE3117094A1 (de) Bahneinfuehrungsvorrichtung an wickelmaschinen
DE69817310T2 (de) Vorrichtung und Verfahren zum Vereinzeln von Bögen von einem Bogenstapel
EP0188452B1 (fr) Dispositif pour la fabrication de gabarits de decoupage
DE4203520C2 (de) Zwischenlage-Apparat zur Einbringung von folienartigem Material in die von einer Schneidemaschine geschnittenen Scheiben
DE102007049426A1 (de) Wellpappe-Streifen-Wende-Vorrichtung
DE2714161B2 (de) Einrichtung zur Überführung des Bahnanfangs einer Papierbahn
EP0890538B1 (fr) Refendeuse
DE3324495A1 (de) Stapelvorrichtung fuer zuschnitte
DE3730923A1 (de) Aggregat zum zuschneiden und zusammensetzen von streifenmaterial
DE3933861A1 (de) Verfahren und vorrichtung zum einfuehren einer materialbahn in eine verarbeitungsmaschine
EP1972718A2 (fr) Dispositif de guidage ou de transfert d'une bande en papier, carton ou autre matière fibreuse
DD148756A1 (de) Vorrichtung zur bildung einer folge von sich unterlappenden bogen
DE10248107B4 (de) Vorrichtung zum Zuschneiden von bahnförmigen Textilmaterialien
DE2430515A1 (de) Drehbare schneidvorrichtung fuer wellpappe
DE3616664C2 (de) Einrichtung zum Abtrennen von einzelnen Bahnabschnitten aus einer Bahn, die durch einzelne aufeinanderfolgend auf eine Kunststoffilmbahn aufkaschierte Flächenelemente gebildet ist

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 CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19860722

17Q First examination report despatched

Effective date: 19870915

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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

Ref country code: SE

Effective date: 19900606

Ref country code: NL

Effective date: 19900606

Ref country code: FR

Effective date: 19900606

Ref country code: BE

Effective date: 19900606

REF Corresponds to:

Ref document number: 53327

Country of ref document: AT

Date of ref document: 19900615

Kind code of ref document: T

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

Ref country code: AT

Effective date: 19900701

REF Corresponds to:

Ref document number: 3578049

Country of ref document: DE

Date of ref document: 19900712

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

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19900731

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

Ref country code: CH

Payment date: 19900822

Year of fee payment: 6

ITF It: translation for a ep patent filed
EN Fr: translation not filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: BULLMER SPEZIALMASCHINEN GMBH

Effective date: 19910306

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

Ref country code: FR

Payment date: 19910717

Year of fee payment: 7

ITTA It: last paid annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19920206

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

Ref country code: DE

Payment date: 19951130

Year of fee payment: 11

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

Ref country code: DE

Effective date: 19970402

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

Ref country code: GB

Payment date: 19980703

Year of fee payment: 14

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990701