EP0412005B1 - Ventil zum Überführen von pulverförmigem Material, unter Vakuum, ohne Verunreinigung durch das übergeführte Material - Google Patents

Ventil zum Überführen von pulverförmigem Material, unter Vakuum, ohne Verunreinigung durch das übergeführte Material Download PDF

Info

Publication number
EP0412005B1
EP0412005B1 EP90402195A EP90402195A EP0412005B1 EP 0412005 B1 EP0412005 B1 EP 0412005B1 EP 90402195 A EP90402195 A EP 90402195A EP 90402195 A EP90402195 A EP 90402195A EP 0412005 B1 EP0412005 B1 EP 0412005B1
Authority
EP
European Patent Office
Prior art keywords
core
orifice
valve according
valve
orifices
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
EP90402195A
Other languages
English (en)
French (fr)
Other versions
EP0412005A1 (de
Inventor
Dominique Le Potier
Jean-Claude Baudin
Philippe Jacqmin
Jean-Paul Levaillant
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to AT90402195T priority Critical patent/ATE88960T1/de
Publication of EP0412005A1 publication Critical patent/EP0412005A1/de
Application granted granted Critical
Publication of EP0412005B1 publication Critical patent/EP0412005B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/004—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly
    • B65B39/005—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly transverse to flow direction

Definitions

  • the invention relates to a vacuum valve which has the primary advantage of allowing transfers, in particular of powdery materials, under vacuum, and this without being subject to pollution by accumulation or deposit and therefore to remain sealed.
  • the manufacture of sintered compounds may require transfers of powders from storage to sheaths which are then hermetically closed before being pressed with their contents. These powders are often kept under vacuum to avoid reactions with the atmosphere (oxidation, pollution). You must be able to isolate certain parts of the installation from others. This is the case in particular of the operation of replacing the filled sheath with an empty sheath during which the powder storage must in no case be placed in communication with the atmosphere. Conventional vacuum valves are quickly inoperative (loss of tightness, seizure) due to their pollution by the pulverulent product which is deposited on the seals, seats, etc.
  • the vacuum valve according to claim 1 which constitutes the subject of the invention makes it possible to avoid this drawback. It comprises a hollow body, two opposite orifices opening into the hollow and between which the transfer takes place, a drawer movable between a position where it extends through the hollow so as to seal the orifices and another position. or a communication exists between the ports. It further comprises a movable core consisting of a pipe and arranged in the hollow as well as means for guiding the core and moving it between a first position where it is in contact with the body and where the pipe extends a first of the orifices and a second position where the core is separated from the first orifice by a gap in which the drawer is moved.
  • the core and the body are provided with annular surfaces of mutual contact which surround the pipe and the first orifice and make it possible to separate the pipe from the rest of the valve when the core is in its first position. These surfaces are in principle provided with at least one annular seal.
  • the orifices can be coaxial and the pipe is then straight. Furthermore, the core advantageously extends into the second orifice and may even extend beyond it.
  • the valve 1 of FIG. 1 comprises a body 2 which surrounds a recess 3.
  • a powder reservoir 8 equipped with a downstream supply device is connected to the collar 6 of the upper orifice 4 by a vacuum-tight connection, and the collar 7 of the lower orifice 5 is connected by a vacuum-tight connection to a tube 10 which is closed by pinching and welding and then sectioned after filling a sheath 9 into which the tube 10 opens and which is in one piece with it. This sealing mode keeps the powder under vacuum in the sheath 9.
  • the body 2 consists of an upper part 11 through which the orifice 4 passes, a central part 12 and a lower part 13 through which the lower orifice 5 passes. These three parts are bolted together .
  • An intermediate piece 14 is clamped between the upper part 11 and the middle part 12 to receive a drawer 15, which is movable under the action of a handle between a retracted position, for which it extends outside the recess 3 , and another position where it extends inside the hollow 3 to separate the orifices 4 and 5 and interrupt any communication between them.
  • the drawer 15 is provided with an annular seal 16 on its planar upper face, and which rests on a plane surface 17 of the intermediate part 14. Furthermore, other annular seals not referenced are interposed between parts 11, 12, 13 and 14 to isolate the interior of the hollow 3 from the outside atmosphere.
  • the hollow 3 contains a movable core 18 in the form of a tube surrounding a straight pipe 19 and which extends between the two orifices 4 and 5.
  • the core 18 slides vertically, in the axis of the orifices 4 and 5, guided by a nut 20, which is a plain bearing subject to the middle part 12.
  • the core 18 is provided with a vertical rack 21 on which a pinion 22 meshes; this pinion 22 is fixed to a horizontal axis 23 rotating in the middle part 12 and from which it leaves by an end which carries a lever actuation 24.
  • a seal surrounds the axis 23 to maintain the seal inside the hollow 3.
  • the nut 20 is hollowed out at the location of the rack 21, the pinion 22 and the axis 23.
  • the system described makes it possible to bring the core 18 by vertical sliding to a position where a conical surface 26 at the top of the pipe 19 and in a funnel comes into contact with a conical surface with the same opening 27 of the upper part 11 overlooking the hollow 3.
  • This arrangement makes it possible to center the pipe 19 on the upper orifice 4 and, thanks to an annular seal 28 established in a groove in the surface 27, to isolate them from the hollow 3 to prevent the introduction of powder therein. .
  • horizontal abutment surfaces, 29 and 30 respectively, close to the preceding ones, are also provided, on the core 18 and the upper part 11 with, here again, an annular seal 31 established in a groove in one of the surfaces 30.
  • a flexible membrane 32 extends between the lower end of the core 18 and a surface at the top of the lower part 13. The flexible membrane 32 also prevents the introduction of powder into the hollow 3.
  • a conduit has however been provided to communicate the lower orifice 5 with the recess 3. It is a horizontal conduit 33, which is machined up to the outside of the lower part 13 but is plugged at this location by a welding point 34, and which communicates with a vertical pipe 35 opening into the hollow 3 and tapped to receive a filter 36. This arrangement makes it possible to maintain the pressure equality between the hollow 3 and the pipe 19, which avoids creation of static volumes.
  • the drawer 15 is translated and the core 18 is lifted until it touches the upper part 11 through the surfaces 26, 27 and 29, 30.
  • the commissioning of the device for feeding the reservoir 8 allows the powder to flow by gravity to the sheath 9 through the orifices 4 and 5 and the pipe 19.
  • the powder does not in principle adhere to the surfaces in front of which it passes because they are all overhanging, either vertical or in any case with a steep slope and a suitable surface condition.
  • a vacuum pump (not shown) draws the atmosphere beforehand in the hollow 3, the sheath 9 and the pipe 19.
  • FIGS. 2, 3 and 4 represent a second embodiment of the invention.
  • the valve 101 appears composed of a body 102 formed by an upper part 111, a middle part 112 and a lower part 113.
  • the upper part 111 and the middle part 112 are as bolted together and enclose an intermediate piece 114 receiving a drawer 115, but the middle part 112 and the lower part 113 are joined by guide columns 131 in which studs extend 132.
  • the ends of the guide columns 131 are adjusted in recesses 133 of the middle part 112 and of the lower part 113 terminated by shoulders on which the guide columns 131 come into abutment.
  • the recesses 133 are extended by bores 134 which pass through the middle part 112 and the lower part 113 and in which the studs 132 extend.
  • the hollow 103 is now delimited by two cylindrical and coaxial bellows 135 and 136, the first of which extends between the middle part 112 and the upper face of a slide 137 flat and the second between the lower face of this same slide 137 and the lower part 113.
  • Clamping systems not shown in detail fix the ends of the bellows 135 and 136 in a sealed manner. As before, seals extend between the upper part 111, the middle part 112 and the intermediate part 114.
  • the slide 137 carries the core 118 and slides along the guide columns 131 using ball bearings 138. It is also provided with an annular flange 139 which allows an outer ring 140 which surrounds it to rotate around him.
  • the outer ring 140 carries pins 141 able to be housed in grooves 142 established at the bottom of the middle part 112.
  • a lever 143 makes it possible to rotate the outer ring 140, and to raise or lower it as well as the slide 137 .
  • the core 118 is raised and its upper planar surface 144 surrounding the pipe 119 is in abutment on a planar surface 145 established on the upper part 111 and turned downwards.
  • An annular seal 146 is established in a groove in the planar surface 144.
  • the pipe 119 extends the upper orifice 104 while extending into the lower orifice 105. Furthermore, the planar surface 145 of the upper part 111 overhangs the outside of the top of the pipe 119.
  • Figure 3 shows this position. As for Figure 4, it corresponds to a top view of the valve in partial section.
  • FIG. 5 We now pass to FIG. 5 for the description of a third embodiment of the invention adapted on a storage hopper maintained under vacuum.
  • the body 202 of the valve 201 consists of an upper part 211, a central part 212 and a lower part 213 which are tubular, of vertical axis, placed end to end and which delimit a cylindrical hollow 203. These parts compress annular seals 250 and 251 disposed respectively between the upper part 211 and the middle part 212 and between the middle part 212 and the lower part 213; here is the middle piece 212 which is used to house the drawer 215.
  • a funnel-shaped part 252 has an annular external rim 253 surrounded by the seal 250 and held between the upper part 211 and the central part 212, as well as an external conical bottom wall 255 which comes into contact with an internal conical surface 256 at the top of the core 218.
  • An annular seal 257 is established on a groove on the surface 255.
  • another annular seal 258, placed on a shoulder 259 of the core 218 just below the internal conical surface 256, is compressed by the lower surface 260 of the funnel 252 when the core 218 is raised.
  • a guide ring 261 of the core 218 is provided at the junction of the middle 212 and lower 213 parts.
  • the lower part 213 is welded at its lower end to the wall 262 of a vacuum enclosure and the core 218 protrudes completely from the lower part 213 and the outlet orifice 205 to flare out into a flange 263 to which a flat annular seal 264 is fixed.
  • the flange 263 abuts against the wall 262 while the top of the core 218 is in contact with the funnel 252.
  • the assembly of the assembly is made flexible enough that a satisfactory overall adjustment, that is to say which isolates the hollow 203 from the inlet orifice 204 and from the pipe 219, is made.
  • a lug 265 is established on the flange 263. It is held at the end of a lever 266 whose other end is connected to an actuating device 267 and whose center is crossed by an axis 268 fixed to the wall 262 and around which the lever 266 can swing.
  • the actuating device 267 consists of a handle 269 hinged to the lever 266 and leaving the wall 262, to which it is connected by a bellows 270 to maintain the seal.
  • the handle 269 slides in a guide bearing 271 fixed outside the wall 262.
  • a locking device 272 comprises a finger 273 sliding in the bearing 271 and the end of which can penetrate in two grooves 274 or 275 established on the handle 269 to block the latter and, consequently, the core 218 in one or the other of two positions corresponding, as in the embodiments already described, to a position where the core 218 is raised and provides a sealed passage for the powder and a position where the core 218 is lowered to allow movement of the spool 215.
  • the valve is mounted on a vacuum enclosure partially limited by the wall 262. Upstream , connected to port 204, is a powder supply. In this case, the downstream part is maintained under vacuum unlike the two embodiments described above.
  • Locking systems can of course be installed on the other two valves of FIGS. 1 to 4.
  • many other concrete embodiments can be proposed by using equivalents of the parts and elements represented and described without depart from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Air Transport Of Granular Materials (AREA)

Claims (14)

  1. Vakuumventil zum Überführen von pulverförmigem Material unter Vakuum aus einem Vorratsbehälter (8) in eine mit dem genannten Ventil hermetisch verbundene Röhre, umfassend (1, 101, 201) einen Hohlkörper (2, 102, 202) , zwei entgegengesetzte Öffnungen (4, 5, 104, 105, 204, 205), die sich in den Hohlraum öffnen, einen Schieber (15, 115, 215), der zwischen einer Stellung, in der er sich so durch den Hohlraum erstreckt, daß er die Öffnungen auf dichte Weise trennt, und einer anderen Stellung beweglich ist, in der eine Verbindung zwischen den beiden Öffnungen besteht, einen beweglichen Kern (18, 118, 218), der aus einer Leitung (19, 119, 219) gebildet und im Körper angeordnet ist, und Mittel (20, 131, 261; 21, 22, 143, 267) um den Kern zu führen und ihn zwischen einer ersten Stellung, in der er in Berührung mit dem Körper ist und in der die Leitung eine erste (4, 104, 204) der Öffnungen verlängert, und einer zweiten Stellung zu bewegen, in der der Kern von der ersten Öffnung durch einen Zwischenraum, in den der Schieber bewegt wird, getrennt ist, wobei der Kern und der Körper mit ringförmigen Oberflächen (26, 27, 144, 145, 255, 256) zur gegenseitigen Berührung versehen sind, die die Leitung und die erste Öffnung umgeben.
  2. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß die Öffnungen parallele Achsen haben, und daß der Kern koaxial zu den Achsen gleitet.
  3. Ventil nach Anspruch 2, dadurch gekennzeichnet, daß die Öffnungen koaxial sind, und daß die Leitung geradlinig ist.
  4. Ventil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß es ein Dichtmittel (32, 264) umfaßt, das zwischen dem Kern und der zweiten Öffnung angeordnet ist und das die Leitung vom Hohlraum trennt, wobei dieses Mittel mindestens dann wirksam ist, wenn sich der Kern in der ersten Stellung befindet.
  5. Ventil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sich der Kern in die zweite Öffnung erstreckt.
  6. Ventil nach Anspruch 5, dadurch gekennzeichnet, daß der Kern über den Hohlraum durch die zweite Öffnung vorsteht und eine Schulter (263) zum Anschlag auf der zweiten Öffnung umfaßt, wenn sich der Kern in der ersten Stellung befindet.
  7. Ventil nach den Ansprüchen 4 und 6, dadurch gekennzeichnet, daß das Mittel zur Abdichtung zwischen dem Kern und der zweiten Öffnung ein Dichtring (264) zwischen der Anschlagschulter und der zweiten Öffnung ist.
  8. Ventil nach den Ansprüchen 4 und 5, dadurch gekennzeichnet, daß das Mittel zur Abdichtung zwischen dem Kern und der zweiten Öffnung eine Membran (32) ist.
  9. Ventil nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Führungsmittel Lager (20, 261) umfassen, die mit dem Körper fest verbunden sind und den Kern umgeben.
  10. Ventil nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Führungsmittel Gleitführungen (131) umfassen, die mit dem Körper fest verbunden sind, und entlang derer der Körper gleitet.
  11. Ventil nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Oberflächen zur gegenseitigen Berührung des Körpers und des Kerns konisch sind.
  12. Ventil nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Mittel zum Bewegen des Kerns aus einer am Kern befestigten Zahnstange (21) und einem Ritzel (22) bestehen, das an einer Drehachse (23) auf dem Körper befestigt und mit einem Hebel versehen ist.
  13. Ventil nach Anspruch 10, dadurch gekennzeichnet, daß die Mittel zum Bewegen des Kerns einen Ring (140) umfassen, der sich um den Kern dreht und mit einem Mittel (141) zur Verriegelung am Körper ausgestattet ist.
  14. Ventil nach einem der Ansprüche 6 oder 7, dadurch gekennzeichnet, daß die erste Öffnung durch ein trichterförmiges Teil (252) begrenzt ist, das der bewegliche Kern umgibt.
EP90402195A 1989-08-02 1990-07-31 Ventil zum Überführen von pulverförmigem Material, unter Vakuum, ohne Verunreinigung durch das übergeführte Material Expired - Lifetime EP0412005B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402195T ATE88960T1 (de) 1989-08-02 1990-07-31 Ventil zum ueberfuehren von pulverfoermigem material, unter vakuum, ohne verunreinigung durch das uebergefuehrte material.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910422A FR2650649B1 (fr) 1989-08-02 1989-08-02 Vanne permettant des transvasements de matieres pulverulentes sous vide sans pollution par la matiere transvasee
FR8910422 1989-08-02

Publications (2)

Publication Number Publication Date
EP0412005A1 EP0412005A1 (de) 1991-02-06
EP0412005B1 true EP0412005B1 (de) 1993-05-05

Family

ID=9384410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402195A Expired - Lifetime EP0412005B1 (de) 1989-08-02 1990-07-31 Ventil zum Überführen von pulverförmigem Material, unter Vakuum, ohne Verunreinigung durch das übergeführte Material

Country Status (4)

Country Link
EP (1) EP0412005B1 (de)
AT (1) ATE88960T1 (de)
DE (1) DE69001523D1 (de)
FR (1) FR2650649B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ263779A (en) * 1993-04-16 1997-03-24 F B Investments Pty Ltd Former Method for random amplification of dna

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1020332A (fr) * 1950-02-27 1953-02-04 Zimmermann & Jansen Gmbh Vanne d'arrêt, notamment pour milieux gazeux
US3324904A (en) * 1964-09-30 1967-06-13 Chevron Res Nozzle construction for filling machines and the like
DE3140578A1 (de) * 1981-10-13 1983-04-21 Heimsoth Keramische Öfen GmbH & Co. KG, 3200 Hildesheim "verfahren und vorrichtung zur herstellung von keramikfliesen"
DE3605711C1 (de) * 1986-02-20 1987-07-02 Abs Brandschutz Feuerschutzvorrichtung fuer von Rohren einer Rohrleitung durchgriffene OEffnungen in Waenden oder Decken

Also Published As

Publication number Publication date
ATE88960T1 (de) 1993-05-15
FR2650649A1 (fr) 1991-02-08
FR2650649B1 (fr) 1991-10-11
EP0412005A1 (de) 1991-02-06
DE69001523D1 (de) 1993-06-09

Similar Documents

Publication Publication Date Title
EP0008270A1 (de) Verfahren und Einrichtung zum pneumatischen Befördern von Schüttgut
FR2961711A1 (fr) Poche pour circuit d'une installation de traitement de liquide biologique
FR2574385A1 (fr) Appareil deverseur rotatif, notamment pour dispenser des substances toxiques
EP0120171B1 (de) Vorrichtung zum Reinigen eines Füllkopfes ohne seine Demontage
CH680952A5 (de)
EP0412005B1 (de) Ventil zum Überführen von pulverförmigem Material, unter Vakuum, ohne Verunreinigung durch das übergeführte Material
EP0445033B1 (de) Mobiles Arbeitsgefäss zum Einsatz in einer Anlage in einer heissen Zelle
FR2929819A1 (fr) Dispositif de distribution et de dosage alimentaire pulverulent.
LU88232A1 (fr) Dispositif de chargement d'une enceinte sous pression
WO2021122435A1 (fr) Bec de remplissage comprenant un canal d'aspiration
EP4351847B1 (de) Transfervorrichtung für ein abgedichtetes gehäuse mit einem verformbaren teil
EP0613955B1 (de) Beschickungsvorrichtung mit einem Mengenregelungsorgan
WO2022195200A1 (fr) Systeme de transfert pour enceinte etanche comportant un dispositif de connexion etanche avec un volume clos
EP1084953B1 (de) Gerät für die kontrollierte Einführung eines gefährlichen Pulvers in einen Behälter
FR2562525A1 (fr) Manche de chargement a filtration integree
EP0324698A1 (de) Ventil zum Überleiten von pulverförmigen oder flüssigen Produkten unter geregeltem Luftdruck
EP0414601B1 (de) Vorrichtung zum Befüllen von einem Schlauch mit Pulver
FR2696725A1 (fr) Installation de transfert non contaminante pour matière granuleuse ou pulvérulente entre deux enceintes physiquement séparées.
EP0214903A1 (de) Automatische Probeentnahmevorrichtungen
EP2480872A1 (de) Vorrichtung zur entnahme von flüssigproben aus einem tank
FR2664692A1 (fr) Dispositif de dosage volumetrique de fluide.
EP1100724A1 (de) Abgabevorrichtung, insbesondere für dosiervorrichtung von verpackungsmaschinen, und mit dergleichen vorrichtung versehene dosiervorrichtung
EP0607770A1 (de) Doppelarmatur Anordnung
EP3880598B1 (de) Füllelement für füllmaschine und maschine mit solchem füllelement
EP1634002A1 (de) Füll- und leerventil und reinigungsgerät für einen flüssigkeitsdruckbehälter

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 CH DE GB IT LI SE

17P Request for examination filed

Effective date: 19910715

17Q First examination report despatched

Effective date: 19920319

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE GB IT LI SE

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19930505

Ref country code: GB

Effective date: 19930505

Ref country code: DE

Effective date: 19930505

Ref country code: AT

Effective date: 19930505

Ref country code: SE

Effective date: 19930505

REF Corresponds to:

Ref document number: 88960

Country of ref document: AT

Date of ref document: 19930515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69001523

Country of ref document: DE

Date of ref document: 19930609

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

Ref country code: LI

Effective date: 19930731

Ref country code: CH

Effective date: 19930731

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930505

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed