EP0671339B1 - Bunghole plug with venting device - Google Patents

Bunghole plug with venting device Download PDF

Info

Publication number
EP0671339B1
EP0671339B1 EP95103173A EP95103173A EP0671339B1 EP 0671339 B1 EP0671339 B1 EP 0671339B1 EP 95103173 A EP95103173 A EP 95103173A EP 95103173 A EP95103173 A EP 95103173A EP 0671339 B1 EP0671339 B1 EP 0671339B1
Authority
EP
European Patent Office
Prior art keywords
bung
shaped
ring seal
hpa
container
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.)
Revoked
Application number
EP95103173A
Other languages
German (de)
French (fr)
Other versions
EP0671339A1 (en
Inventor
Dietmar Przytulla
Bruno Pötz
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.)
Mauser Werke GmbH
Original Assignee
Mauser Werke GmbH
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=6905720&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0671339(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mauser Werke GmbH filed Critical Mauser Werke GmbH
Publication of EP0671339A1 publication Critical patent/EP0671339A1/en
Application granted granted Critical
Publication of EP0671339B1 publication Critical patent/EP0671339B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1644—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element the element being a valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
    • B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter

Definitions

  • the present invention relates to a bung plug made of thermoplastic material according to the preamble of claim 1.
  • the degassing device only opens at a defined higher internal pressure, for. B. to prevent excessive permanent bulging of the container, in particular rectangular pallet containers. Furthermore, it may make sense from a safety point of view to use such a degassing device as a safety bursting device, e.g. B. in the event of a local fire to prevent bursting (bursting) of the container with excessive heating, especially if it is filled with dangerous liquid contents.
  • sheet drums or pallet containers for the storage and transport of particularly dangerous liquid goods can be secured against excessive pressures, but which do not allow uncontrolled degassing even at the lowest internal pressures.
  • the ring seal can be designed as an O-ring seal. However, it is particularly advantageous if the ring seal around the central part is designed as an annular flat seal.
  • the middle part has a flat circumferential annular groove on the circumference for receiving or for fixing the ring seal.
  • the peg-shaped lower part of the plastic stopper is provided with at least one slot which extends to the central part with a seat for the ring seal. It is particularly advantageous if the lower part of the plastic plug has a cross recess so that the peg-shaped lower part can be easily pressed into the hole in the sheet plug and clicks into place behind it.
  • a large-volume pallet container is shown as an application example, which essentially comprises an inner container 4 for receiving liquid contents, a bottom pallet 2 and a supporting grid structure 3 attached to it as an outer jacket 1.
  • the thin-walled inner container 4 is in the outer jacket 1 used.
  • the inner container 4 consists of blow-molded thermoplastic or welded stainless steel sheet and has an outlet 5 in its lower region and a filler neck 6 with an external thread in its upper region.
  • a large screw cap 7 with an internal thread is screwed onto this filler neck 6, which is shown enlarged again in the upper part of the drawing figure.
  • the large screw cap 7 in turn has a bung hole 8 with an internal thread in the center, into which the bung plug 9 according to the invention is screwed with an external thread.
  • the bung plug 9, which is provided with an overpressure safety device can, however, as shown in FIG. 2 , be screwed directly into a corresponding bung hole of a bung barrel, here a plastic L-ring barrel 10, without using the large screw cap 7.
  • FIG. 3 shows a preferred embodiment of the plug 9 with the overpressure protection 11 according to the invention alone.
  • the plug 9 has an external thread 12.
  • a circumferential groove 13 is provided on its outer circumference below the external thread 12 for receiving an O-ring seal 14.
  • This O-ring seal 14 is compressed gas-tight and liquid-tight into the bung hole when the bung plug 9 is screwed in, and thus seals the bung plug 9 against the bung hole.
  • the plug 9 has a central bore 15. A pressure equalization can take place through this central bore 15.
  • the overpressure safety device 11 which is designed as a stepped, mushroom-shaped plastic stopper 16, is pressed into the central bore 15 only after the filling material has cooled, in order to avoid the formation of underpressures.
  • the plastic stopper 16 is shown enlarged in FIG .
  • the stepped, mushroom-shaped plastic stopper 16 consists of high-molecular, comparatively rigid polyethylene (PE) and is formed in one piece as an injection molded part; it has three sections 17, 18 and 21.
  • the first section is designed as a flat, cylindrical, disc-shaped or plate-shaped upper part 17 which is wide in the radial direction.
  • the upper part 17 is slightly chamfered on its upper outer edge.
  • a disk-shaped central part 18 is also formed as a second partial region, which is more beveled on its lower edge, which is generally shorter in the radial direction than the upper part 17 or has a smaller diameter.
  • This middle part 18 has in its upper outer region 18a or circumferential groove 19 for receiving and fixing an O-ring seal 20.
  • This O-ring seal 20 is compressed when the plastic plug 16 is inserted and locked into the central bore 15 of the plug 9 and thus seals the plastic plug 16 against the plug 9 and thus the entire container, even with slight pressure differences.
  • the third section of the plastic plug 16 consists of a peg-shaped lower part 21, which is cylindrical in its upper, thinner region 21a and thicker and essentially frustoconical in its lower region 21b, the lower part 21 being able to be pressed into the corresponding central bore 15 of the bung plug 9 and can be locked.
  • the plastic plug 16 Due to the gradation of the upper region 21a, which forms an undercut 22, the plastic plug 16 is locked and held in the bore 15 of the sheet plug 9, which also has an undercut 23.
  • the plastic stopper 16 is designed to be elastic in the region of the lower part 21. This is achieved, on the one hand, in that the entire plastic stopper 16 is made from a material that is tailored to the special needs, namely high molecular weight PE.
  • the elasticity of the lower part 21 is brought about in that one or more slots 24 are formed in the lower part 21 in the longitudinal direction of the plastic stopper 16.
  • two mutually perpendicular slots 24 are provided in the lower part 21 as a cross slot.
  • an overpressure building up in the container can act directly on the middle part 18, the ring seal 20 or 25 and the upper part 17 of the plastic stopper 16.
  • they offer a certain resistance to the internal pressure that builds up until a critical size is reached as a setpoint and defined opening pressure, after which a higher excess pressure overcomes the sealing effect of the ring seal 20, 25 and can escape.
  • plastic plug 16 with certain opening pressures, for. B. 200 hPa or 350 hPa, or certain opening pressure ranges around these values of about plus / minus 30 hPa.
  • the flat gasket 25 z. B.
  • FIG. 1 Another preferred embodiment of the plastic stopper 16 according to the invention is shown in FIG .
  • the same parts are the same Provide reference numbers.
  • the plastic stopper 16 differs from that shown in FIG. 3 essentially in that it does not have an O-ring seal, but rather the flat seal 25 which has a rectangular cross section and which has already been mentioned.
  • FIG. 3 Another preferred embodiment of the plastic stopper 16 according to the invention is shown in FIG .
  • the same parts are the same Provide reference numbers.
  • the plastic stopper 16 differs from that shown in FIG. 3 essentially in that it does not have an O-ring seal, but rather the flat seal 25 which has a rectangular cross section and which has already been mentioned.
  • FIG. 3 Another preferred embodiment of the plastic stopper 16 according to the invention is shown in FIG . The same parts are the same Provide reference numbers.
  • the plastic stopper 16 differs from that shown in FIG. 3 essentially in that it does not have an O-ring seal, but rather the flat seal 25 which has a rectangular cross section and which has already been mentioned.
  • a fine textile fabric-like gauze 26 is additionally arranged below the central bore or inside the bung plug 9, through which the resulting gas phase or an overpressure can escape from the container, but liquid particles are retained in the container.
  • the height of the flat gasket can be 2.1 mm and consist of a different material NBR 50 +/- 5 Shore A. As the height of the ring seal 20 or flat seal 25 increases, it is compressed more in the locked position and the setpoint opening pressure shifts to higher values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Gyroscopes (AREA)
  • Control Of Eletrric Generators (AREA)
  • Amplifiers (AREA)
  • External Artificial Organs (AREA)

Abstract

The cap has an annular seal and thread to engage with a corresponding thread in the opening of a container. The gas discharge vent is comprises an insert which forms an excess pressure control (11) which is opened at a pre-set nominal value of approximately 200 hPa (= 0.2 bar) internal excess pressure, or of 350 hPa (0.35 bar). The insert is in the form of a gradated, mushroom shaped, rigid plastic bung (16) which has a radially wide, flat cylindrical, disc shaped top part, a smaller diameter, cylindrical middle part, and a pin shaped, thinner bottom part. The top of the bottom part has cylindrical steps with its lower part is thicker and wider, having a frusto-conical shape. The bottom part is pressed into a hole (15) in the bung (9).

Description

Die vorliegende Erfindung betrifft einen Spundstopfen aus thermoplastischem Kunststoff gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a bung plug made of thermoplastic material according to the preamble of claim 1.

Beim Einsatz bestimmter Füllgüter, die beim Transport durch Rüttelbewegungen oder bei einer Lagerung im Freien besonderen Beanspruchungen (Sonneneinstrahlung, Temperaturschwankungen) ausgesetzt sind und dadurch hohe Dampfdrücke bilden oder/und grundsätzlich zur Entgasung neigen, kann sich ein nachteiliger Innendruck (Überdruck) im Behälter aufbauen. So ist es z. B. für sich zersetzende Stoffe wie etwa Peroxid erforderlich, eine Entgasung bereits schon bei niedrigsten Drücken zu ermöglichen. Dagegen kann es bei Produkten mit Heißabfüllung auch zu einem erheblichen Unterdruck kommen, wenn der Behälter sofort nach der Abfüllung verschlossen wird und dann das Füllgut abkühlt. Ein derartiger Unterdruck muß jedoch vermieden werden, da er zu erheblichen Einbeulungen des Behälters führen kann.When using certain filling materials that are exposed to special stresses (solar radiation, temperature fluctuations) during transport due to vibrating movements or when stored outdoors and which therefore form high vapor pressures and / or tend to degas, a negative internal pressure (excess pressure) can build up in the container. So it is z. B. required for decomposing substances such as peroxide to enable degassing even at the lowest pressures. On the other hand, products with hot filling can also experience a considerable negative pressure if the container is closed immediately after filling and then the product cools down. Such negative pressure must be avoided, however, since it can lead to considerable denting of the container.

Es ist bekannt (vgl. DE-U-9 217 291), bei Behältern entsprechende Zwei-Wege-Ventile vorzusehen, die einen Gasaustausch des Behälterinneren mit der atmosphärischen Umgebung in beiden Richtungen ermöglichen und sowohl einen Behälterüberdruck als auch einen Unterdruck abbauen. Derartige Zwei-Wege-Ventile sind aber bereits bei geringsten Druckunterschieden geöffnet und es kann z. B. bei einem Unterdruck im Behälter Regenwasser angesaugt werden und in den Behälter gelangen, sofern nicht dafür gesorgt ist, daß das Regenwasser ablaufen kann und sich nicht oberhalb des Spundstopfens ansammelt.
Die bekannten Be- und Entgasungsvorrichtungen weisen also den Nachteil auf, daß sie einem Innendruck nur einen geringen und undefinierten Widerstand entgegensetzen. Eine Entgasung erfolgt daher meist bereits schon bei geringstem Überdruck.It is known (cf. DE-U-9 217 291) to provide corresponding two-way valves for containers which enable gas exchange of the interior of the container with the atmospheric environment in both directions and reduce both a container overpressure and a vacuum. Such two-way valves are already open at the slightest pressure difference and it can, for. B. at a negative pressure in the container rainwater and get into the container, unless care is taken that the rainwater can run off and does not accumulate above the bung plug.
The known gassing and degassing devices therefore have the disadvantage that they only offer a slight and undefined resistance to an internal pressure. Degassing therefore usually takes place even at the slightest excess pressure.

Es kann aber in besonderen Fällen wünschenswert sein, daß die Entgasungseinrichtung erst bei einem definierten höheren Innendruck öffnet, so z. B. um ein übermäßiges dauerhaftes Ausbeulen des Behälters, insbesondere von rechteckförmigen Palettencontainern zu verhindern. Weiterhin kann es sicherheitstechnisch sinnvoll sein, eine deratige Entgasungseinrichtung als Sicherheits-Berstvorrichtung z. B. im Falle eines lokalen Brandes vorzusehen, um einem Bersten (Zerplatzen) des Behälters bei übermäßiger Erhitzung vorzubeugen, insbesondere wenn er mit gefährlichen flüssigen Füllgütern befüllt ist.In special cases, however, it may be desirable that the degassing device only opens at a defined higher internal pressure, for. B. to prevent excessive permanent bulging of the container, in particular rectangular pallet containers. Furthermore, it may make sense from a safety point of view to use such a degassing device as a safety bursting device, e.g. B. in the event of a local fire to prevent bursting (bursting) of the container with excessive heating, especially if it is filled with dangerous liquid contents.

Es ist daher Aufgabe der vorliegenden Erfindung, einen einfachen und preiswerten Spundstopfen mit Entgasungseinrichtung anzugeben, mittels dessen Behälter wie z. B. Spundfässer oder Palettencontainer zur Lagerung und zum Transport von insbesondere gefährlichen flüssigen Füllgütern gegen überhöhte Überdrücke gesichert werden können, die aber eine unkontrollierte Entgasung schon bei niedrigsten Innendrücken nicht zulassen.It is therefore an object of the present invention to provide a simple and inexpensive bung plug with degassing device, by means of the container such. B. sheet drums or pallet containers for the storage and transport of particularly dangerous liquid goods can be secured against excessive pressures, but which do not allow uncontrolled degassing even at the lowest internal pressures.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruchs 1.This object is achieved by the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche. Besonders vorteilhaft ist es, wenn die Überdrucksicherung erst ab einem vorgebbaren Sollwert von ca. 350 hPa (= 0,35 bar) innerem Überdruck öffnet. Der Toleranzbereich liegt hierbei bei etwa plus/minus 30 hPa (= 0,03 bar). Durch diese Maßnahme, daß die Überdrucksicherung erst bei einem vorgebbaren definierten Sollwert = Mindestüberdruck öffnet, ist zum einen sichergestellt, daß die Gasphase des Behälterinhaltes nicht ständig bei geringen Temperaturschwankungen (z. B. Tag-Nacht) "ausgeatmet" und möglicherweise Feuchtigkeit enthaltende Luft wieder "eingeatmet" wird. Ein ständiges Ausatmen bzw. Entweichen der Gasphase aus dem Behälter führt langfristig schließlich auch zu einem Verlust des Füllgutes mit erheblicher Belastung der Umwelt. Andererseits besteht für einen derartigen, mit dem erfindungsgemäßen Spundstopfen mit Überdrucksicherung ausgestatteten Behälter ein gewisser Schutz gegen überhöhte Innendruckausbildung und Bersten (Zerplatzen) des Behälters, z. B. durch Überhitzung bei einem Brand im Nahbereich von gelagerten Behältern. Die Ringdichtung kann als O-Ringdichtung ausgebildet sein. Besonders vorteilhaft ist es jedoch, wenn die Ringdichtung um das Mittelteil als ringförmige Flachdichtung ausgebildet ist.Advantageous embodiments of the invention are the subject of the dependent claims. It is particularly advantageous if the overpressure safety device only opens from an specifiable setpoint of approx. 350 hPa (= 0.35 bar) internal overpressure. The tolerance range is approximately plus / minus 30 hPa (= 0.03 bar). This measure, that the overpressure safety device only opens at a predefinable defined setpoint = minimum overpressure, ensures on the one hand that the gas phase of the container contents is not constantly "exhaled" with slight temperature fluctuations (e.g. day-night) and possibly air containing moisture again is "inhaled". In the long term, a constant exhalation or escape of the gas phase from the container also leads to a loss of the contents with considerable pollution of the environment. On the other hand, there is a certain protection against excessive internal pressure build-up and bursting (bursting) of the container, for. B. by overheating in the event of a fire in the vicinity of stored containers. The ring seal can be designed as an O-ring seal. However, it is particularly advantageous if the ring seal around the central part is designed as an annular flat seal.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß das Mittelteil umfangsseitig eine flache umlaufende Ringnut zur Aufnahme bzw. zur Fixierung der Ringdichtung aufweist. In vorteilhafter Weise ist das zapfenförmige Unterteil des Kunststoffstopfens mit mindestens einem Schlitz versehen, der bis an das Mittelteil mit Sitz für die Ringdichtung heranreicht. Besonders vorteilhaft ist es, wenn das Unterteil des Kunststoffstopfens einen Kreuzschlitz aufweist, damit das zapfenförmige Unterteil leicht in die Bohrung im Spundstopfen eingedrückt werden kann und dahinter einrastet.In a further embodiment of the invention it is provided that the middle part has a flat circumferential annular groove on the circumference for receiving or for fixing the ring seal. Advantageously, the peg-shaped lower part of the plastic stopper is provided with at least one slot which extends to the central part with a seat for the ring seal. It is particularly advantageous if the lower part of the plastic plug has a cross recess so that the peg-shaped lower part can be easily pressed into the hole in the sheet plug and clicks into place behind it.

Die Erfindung wird nachfolgend anhand von in den Zeichnungen dargestellten bevorzugten Ausführungsbeispielen näher erläutert und beschrieben. Es zeigen:

Figur 1
in schematischer Darstellung die Verwendung einer Ausführungsform der vorliegenden Erfindung bei einem Palettencontainer,
Figur 2
die Verwendung einer Ausführungsform der vorliegenden Erfindung bei einem Kunststoff-Spundfaß,
Figur 3
eine Ausführungsform der vorliegenden Erfindung,
Figur 4
eine zweite Ausführungsform der vorliegenden Erfindung und
Figur 5
die Ausführungsform aus Fig. 3 in vergrößerter Darstellung.
The invention is explained and described in more detail below with reference to preferred exemplary embodiments illustrated in the drawings. Show it:
Figure 1
a schematic representation of the use of an embodiment of the present invention in a pallet container,
Figure 2
the use of an embodiment of the present invention in a plastic sheet drum,
Figure 3
an embodiment of the present invention,
Figure 4
a second embodiment of the present invention and
Figure 5
the embodiment of FIG. 3 in an enlarged view.

In Figur 1 ist als Anwendungsbeispiel ein großvolumiger Palettencontainer gezeigt, der im wesentlichen einen Innenbehälter 4 zur Aufnahme von flüssigem Füllgut, eine Bodenpalette 2 und eine daran befestigte stützende Gitterkonstruktion 3 als Außenmantel 1 umfaßt. In den Außenmantel 1 ist der dünnwandige Innenbehälter 4 eingesetzt. Der Innenbehälter 4 besteht aus blasgeformtem thermoplastischem Kunststoff oder aus verschweißtem Edelstahlblech und weist in seinem unteren Bereich einen Auslauf 5 und in seinem oberen Bereich einen Einfüllstutzen 6 mit Außengewinde auf. Auf diesen Einfüllstutzen 6 ist ein großer Schraubdeckel 7 mit Innengewinde aufgeschraubt, der im oberen Teil der Zeichnungsfigur noch einmal vergrößert dargestellt ist. Der große Schraubdeckel 7 weist seinerseits zentralmittig ein Spundloch 8 mit Innengewinde auf, in welches der erfindungsgemäße Spundstopfen 9 mit Außengewinde eingeschraubt ist.
Der Spundstopfen 9, der mit einer Überdrucksicherung versehen ist, kann jedoch auch, wie in Figur 2 dargestellt ist, ohne Verwendung des großen Schraubdeckels 7 unmittelbar in ein entsprechendes Spundloch eines Spundfaßes, hier ein Kunststoff - L-Ring-Faß 10 eingeschraubt sein.In Figure 1 , a large-volume pallet container is shown as an application example, which essentially comprises an inner container 4 for receiving liquid contents, a bottom pallet 2 and a supporting grid structure 3 attached to it as an outer jacket 1. The thin-walled inner container 4 is in the outer jacket 1 used. The inner container 4 consists of blow-molded thermoplastic or welded stainless steel sheet and has an outlet 5 in its lower region and a filler neck 6 with an external thread in its upper region. A large screw cap 7 with an internal thread is screwed onto this filler neck 6, which is shown enlarged again in the upper part of the drawing figure. The large screw cap 7 in turn has a bung hole 8 with an internal thread in the center, into which the bung plug 9 according to the invention is screwed with an external thread.
The bung plug 9, which is provided with an overpressure safety device, can, however, as shown in FIG. 2 , be screwed directly into a corresponding bung hole of a bung barrel, here a plastic L-ring barrel 10, without using the large screw cap 7.

In Figur 3 ist eine bevorzugte Ausführungsform des Spundstopfens 9 mit der erfindungsgemäßen Überdrucksicherung 11 allein dargestellt. Der Spundstopfen 9 weist ein Außengewinde 12 auf. Zur Abdichtung des Spundstopfens 9 gegen das entsprechende Spundloch (im L-Ringfaß oder im großen Schraubdeckel des Palettencontainers) ist am seinem äußeren Umfang unterhalb des Außengewindes 12 eine umlaufende Nut 13 zur Aufnahme einer O-Ring-Dichtung 14 vorgesehen. Diese O-Ring-Dichtung 14 wird beim Einschrauben des Spundstopfens 9 gas- und flüssigkeitsdicht in das Spundloch zusammengedrückt und dichtet so den Spundstopfen 9 gegen das Spundloch ab. Der Spundstopfen 9 weist eine zentrale Bohrung 15 auf. Durch diese zentrale Bohrung 15 kann ein Druckausgleich stattfinden. Insbesondere nach einer Heißabfüllung wird die als abgestufter, pilzförmiger Kunststoffstopfen 16 ausgebildete Überdrucksicherung 11 erst nach erfolgter Abkühlung des Füllgutes in die zentrale Bohrung 15 eingedrückt, um eine Unterdruchbildung zu vermeiden. FIG. 3 shows a preferred embodiment of the plug 9 with the overpressure protection 11 according to the invention alone. The plug 9 has an external thread 12. To seal the plug 9 against the corresponding bung hole (in the L-ring barrel or in the large screw cap of the pallet container), a circumferential groove 13 is provided on its outer circumference below the external thread 12 for receiving an O-ring seal 14. This O-ring seal 14 is compressed gas-tight and liquid-tight into the bung hole when the bung plug 9 is screwed in, and thus seals the bung plug 9 against the bung hole. The plug 9 has a central bore 15. A pressure equalization can take place through this central bore 15. In particular, after hot filling, the overpressure safety device 11, which is designed as a stepped, mushroom-shaped plastic stopper 16, is pressed into the central bore 15 only after the filling material has cooled, in order to avoid the formation of underpressures.

Der Kunststoffstopfen 16 ist in Figur 5 vergrößert dargestellt. Der abgestufte, pilzförmige Kunststoffstopfen 16 besteht aus hochmolekularem, vergleichsweise steifem Polyethylen (PE) und ist als Spritzgußteil einstückig ausgebildet; er weist drei Teilbereiche 17, 18 und 21 auf. Der erste Teilbereich ist als in radialer Richtung breites, flach zylindrisches, scheibenförmiges oder tellerförmiges Oberteil 17 ausgebildet. Das Oberteil 17 ist an seiner oberen Außenkante leicht abgeschrägt. Unterhalb des Oberteils 17 ist als zweiter Teilbereich ein ebenfalls scheibenförmiges und an seiner Unterkante stärker abgeschrägtes Mittelteil 18 angeformt, das insgesamt in radialer Richtung kürzer als das Oberteil 17 ausgebildet ist, bzw. einen kleineren Durchmesser aufweist. Dieses Mittelteil 18 weist in seinem oberen äußeren Bereich 18a bzw. umfangsseitig eine umlaufende Nut 19 zur Aufnahme und Fixierung einer O-Ring-Dichtung 20 auf. Diese O-Ring-Dichtung 20 wird beim Einstecken und Verrasten des Kunststoffstopfens 16 in die zentrale Bohrung 15 des Spundstopfens 9 zusammengedrückt und dichtet so den Kunststoffstopfen 16 gegen den Spundstopfen 9 und damit den gesamten Behälter auch bei geringen Druckunterschieden ab.
Der dritte Teilbereich des Kunststoffstopfens 16 besteht aus einem zapfenförmigen Unterteil 21, das in seinem oberen dünneren Bereich 21a abgestuft zylindrisch und in seinem unteren Bereich 21b dicker und im wesentlichen kegelstumpfförmig ausgebildet ist, wobei das Unterteil 21 in die entsprechende zentrale Bohrung 15 des Spundstopfens 9 eindrückbar und verrastbar ist. Durch die Abstufung des oberen Bereich 21a, die eine Hinterschneidung 22 bildet, wird der Kunststoffstopfen 16 in der Bohrung 15 des Spundstopfen 9, die ebenfalls eine Hinterschneidung 23 aufweist, verrastet und festgehalten. Zum Eindrücken und Verrasten ist es jedoch erforderlich, daß der Kunststoffstopfen 16 im Bereich des Unterteils 21 elastisch ausgebildet ist. Dies wird zum einen dadurch erzielt, daß der gesamte Kunststoffstopfen 16 aus einem auf die besonderen Bedürfnisse abgestimmten Material, nämlich hochmolekularem PE hergestellt ist. Zum anderen wird die Elastizität des Unterteils 21 dadurch bewirkt, daß in dem Unterteil 21 in Längsrichtung des Kunststoffstopfens 16 ein oder mehrere Schlitze 24 ausgebildet sind. Vorzugsweise sind in dem Unterteil 21 als Kreuzschlitz zwei zueinander senkrechte Schlitze 24 vorgesehen.
Durch die Schlitze 24 kann ein sich im Behälter aufbauender Überdruck direkt auf das Mittelteil 18, die Ringdichtung 20 bzw. 25 und das Oberteil 17 des Kunststoffstopfens 16 einzuwirken. Entsprechend ihrer Geometrie -hier vor allem die Dicke- und entsprechend dem verwendeten Material bieten diese dem sich aufbauenden Innendruck solange einen bestimmten Widerstand, bis eine kritische Größe als Sollwert und definierter Öffnungsdruck erreicht wird, wonach ein höherer Überdruck die Dichtwirkung der Ringdichtung 20, 25 überwindet und entweichen kann. So kann man Kunststoffstopfen 16 mit bestimmten Öffnungsdrücken, z. B. 200 hPa oder 350 hPa, bzw. bestimmte Öffnungsdruckbereiche um diese Werte von etwa plus/minus 30 hPa herstellen. Für einen Öffnungsdruck von ca. 200 hPa besteht die Flachdichtung 25 z. B. aus einem schaumgummiartigen Werkstoff EPDM 50 plus/minus 5 Shore A und weist einen inneren lichten Durchmesser von 12 mm +/- 0,1 und eine Dicke (Höhe) von 2,6 mm +/-0,1 auf. Dieser Werkstoff ist ein Elastomer auf Kautschukbasis nach der Norm ISO 1629 EPDM und enthält die Bestandteile Ethylen, Propylen, Teer und Polymer.
In Figur 4 ist eine andere bevorzugte Ausführungsform des erfindungsgemäßen Kunststoffstopfens 16 dargestellt. Dabei sind gleiche Teile mit den gleichen Bezugsziffern versehen. Der Kunststoffstopfen 16 unterscheidet sich von dem in Figur 3 gezeigten im wesentlichen dadurch, daß er keine O-Ring-Dichtung, sondern die bereits zuvor erwähnte im Querschnitt rechteckige Flachdichtung 25 aufweist.
In Figur 4 ist zusätzlich unterhalb der zentralen Bohrung bzw. innerhalb des Spundstopfens 9 eine feine textilgewebeartige Gaze 26 angeordnet, durch welche die entstehende Gasphase bzw. ein Überdruck aus dem Behälter entweichen kann, Flüssigkeitspartikel aber im Behälter zurückgehalten werden. Für einen Öffnungsdruck von z. B. 350 hPa kann die Höhe der Flachdichtung 2,1 mm betragen und aus einem anderen Werkstoff NBR 50 +/- 5 Shore A bestehen. Mit zunehmender Höhe Ringdichtung 20 bzw. Flachdichtung 25 wird diese in verrasteter Position stärker zusammengedrückt und der Sollwert-Öffnungsdruck verschiebt sich zu höheren Werten.The plastic stopper 16 is shown enlarged in FIG . The stepped, mushroom-shaped plastic stopper 16 consists of high-molecular, comparatively rigid polyethylene (PE) and is formed in one piece as an injection molded part; it has three sections 17, 18 and 21. The first section is designed as a flat, cylindrical, disc-shaped or plate-shaped upper part 17 which is wide in the radial direction. The upper part 17 is slightly chamfered on its upper outer edge. Underneath the upper part 17, a disk-shaped central part 18 is also formed as a second partial region, which is more beveled on its lower edge, which is generally shorter in the radial direction than the upper part 17 or has a smaller diameter. This middle part 18 has in its upper outer region 18a or circumferential groove 19 for receiving and fixing an O-ring seal 20. This O-ring seal 20 is compressed when the plastic plug 16 is inserted and locked into the central bore 15 of the plug 9 and thus seals the plastic plug 16 against the plug 9 and thus the entire container, even with slight pressure differences.
The third section of the plastic plug 16 consists of a peg-shaped lower part 21, which is cylindrical in its upper, thinner region 21a and thicker and essentially frustoconical in its lower region 21b, the lower part 21 being able to be pressed into the corresponding central bore 15 of the bung plug 9 and can be locked. Due to the gradation of the upper region 21a, which forms an undercut 22, the plastic plug 16 is locked and held in the bore 15 of the sheet plug 9, which also has an undercut 23. For pushing in and latching, however, it is necessary that the plastic stopper 16 is designed to be elastic in the region of the lower part 21. This is achieved, on the one hand, in that the entire plastic stopper 16 is made from a material that is tailored to the special needs, namely high molecular weight PE. On the other hand, the elasticity of the lower part 21 is brought about in that one or more slots 24 are formed in the lower part 21 in the longitudinal direction of the plastic stopper 16. Preferably, two mutually perpendicular slots 24 are provided in the lower part 21 as a cross slot.
Through the slots 24, an overpressure building up in the container can act directly on the middle part 18, the ring seal 20 or 25 and the upper part 17 of the plastic stopper 16. According to their geometry - above all the thickness - and according to the material used, they offer a certain resistance to the internal pressure that builds up until a critical size is reached as a setpoint and defined opening pressure, after which a higher excess pressure overcomes the sealing effect of the ring seal 20, 25 and can escape. So you can plastic plug 16 with certain opening pressures, for. B. 200 hPa or 350 hPa, or certain opening pressure ranges around these values of about plus / minus 30 hPa. For an opening pressure of approx. 200 hPa, the flat gasket 25 z. B. from a foam rubber-like material EPDM 50 plus / minus 5 Shore A and has an inner clear diameter of 12 mm +/- 0.1 and a thickness (height) of 2.6 mm +/- 0.1. This material is a rubber-based elastomer according to the ISO 1629 EPDM standard and contains the components ethylene, propylene, tar and polymer.
Another preferred embodiment of the plastic stopper 16 according to the invention is shown in FIG . The same parts are the same Provide reference numbers. The plastic stopper 16 differs from that shown in FIG. 3 essentially in that it does not have an O-ring seal, but rather the flat seal 25 which has a rectangular cross section and which has already been mentioned.
In FIG. 4, a fine textile fabric-like gauze 26 is additionally arranged below the central bore or inside the bung plug 9, through which the resulting gas phase or an overpressure can escape from the container, but liquid particles are retained in the container. For an opening pressure of z. B. 350 hPa, the height of the flat gasket can be 2.1 mm and consist of a different material NBR 50 +/- 5 Shore A. As the height of the ring seal 20 or flat seal 25 increases, it is compressed more in the locked position and the setpoint opening pressure shifts to higher values.

Ein wesentlicher Vorteil der Erfindung ist durch die geschützte Anordnung der Ringdichtung 20, 25 des Kunststoff-Stopfens unterhalb des flachen scheibenförmigen Oberteiles 17 gegeben, wodurch diese dort vor Sonneneinstrahlung (UV-Einwirkung) bewahrt ist; so tritt keine vorzeitige Alterung, Verhärtung oder Versprödung der Ringdichtung und damit des Öffnungsdruck-Grenzwertes auf.An important advantage of the invention is given by the protected arrangement of the ring seal 20, 25 of the plastic stopper below the flat, disc-shaped upper part 17, as a result of which it is protected from solar radiation (UV exposure); so there is no premature aging, hardening or embrittlement of the ring seal and thus the opening pressure limit value.

Die zuvor anhand einiger Ausführungsbeispiele erläuterte Erfindung löst die eingangs gestellte Aufgabe auf einfache und preiswerte Weise. Es können damit Flüssigkeitsbehälter wie Spundfässer, Kanister, Fassetts oder größere Palettencontainer als Berstsicherung gegen zu hohe Überdrücke gesichert werden können.The invention explained above on the basis of a few exemplary embodiments achieves the object stated in a simple and inexpensive manner. It can be used to secure liquid containers such as sheet drums, canisters, facets or larger pallet containers as burst protection against excessive pressures.

BezugsziffernlisteReference number list

11
AußenbehälterOuter container
22nd
Palettepalette
33rd
GitterkonstruktionLattice construction
44th
InnenbehälterInner container
55
Auslauf (4)Outlet (4)
66
Einfüllstutzen (4)Filler neck (4)
77
großer Schraubdeckellarge screw cap
88th
Spundloch (7)Bunghole (7)
99
SpundstopfenBung plug
1010th
L-Ring-SpundfaßL-ring bung
1111
ÜberdrucksicherungOverpressure protection
1212th
Außengewinde (9)External thread (9)
1313
umlaufende Nut (9)circumferential groove (9)
1414
O-Ring-Dichtung (9)O-ring seal (9)
1515
zentrale Bohrung (9)central bore (9)
1616
Kunststoffstopfen (11)Plastic plug (11)
1717th
scheibenförmiges Oberteil (16)disc-shaped top (16)
1818th
Mittelteil (16)Middle section (16)
18a18a
oberer Bereich des Mittelteils (16)upper section of the middle section (16)
1919th
umlaufende Nut (18a)circumferential groove (18a)
2020th
O-Ring-Dichtung (19)O-ring seal (19)
2121
dünneres Unterteil (16)thinner base (16)
21a21a
oberer Bereich des Unterteils (21)upper area of the lower part (21)
21b21b
unteren Bereich des Unterteils (21)lower part of the lower part (21)
2222
Hinterschneidung (21)Undercut (21)
2323
Hinterschneidung (15)Undercut (15)
2424th
Schlitze (21)Slits (21)
2525th
ringförmige Flachdichtung (19)annular flat gasket (19)
2626
Gaze (9)Gauze (9)

Claims (6)

  1. A thermoplastics bung (9) comprising a venting device, a screw thread (12) and a circumferential ring seal (14) and screwed in a gas-tight and liquid-tight manner into a corresponding screw thread of a bung opening in a container (4, 10) for the storage and transportation of, in particular, dangerous liquid fillings, wherein the venting device (11) is formed as a stepped, mushroom-shaped, rigid stopper (16) having a radially broad, flat-cylindrical, disc-shaped upper part (17), a likewise cylindrical middle part (18) of smaller diameter and a peg-shaped lower part (21) of smaller diameter again, wherein a ring seal (20), arranged round an opening (15) or bore, is provided between the disc-shaped upper part (17) and the surface of the bung (9), characterised in that the stopper comprises polyethylene (PE) and the lower part is cylindrically formed in an upper region (21a) and is stepped relative to a lower region and, in its lower, thicker region (21b), is somewhat broader and substantially in the form of a truncated cone, the lower part (21) being pushable into the corresponding opening (15) or bore in the bung (9) and engaging in the bore (15) by means of the projecting truncated-cone-shaped lower part (21a), and the venting device being formed as a simple pressure-relief device (11) which only opens at a predeterminable set value of approximately 200 hPa (= 0.2 bar) internal excess pressure.
  2. A bung according to claim 1, characterised in that the pressure-relief device (11) only opens above a predeterminable set value of approximately 350 hPa (= 0.35 bar) internal excess pressure.
  3. A bung according to claim 1 or 2, characterised in that the upper region (18a) of the middle part (18) has a circumferential annular groove (19) on its periphery for receiving the ring seal (20).
  4. A bung according to claim 3, characterised in that the ring seal (20) is formed as a flat seal (25) of rectangular cross-section.
  5. A bung according to any one of the preceding claims 1 to 4, characterised in that the lower part (21) of the plastics stopper (16) has at least one slot (24).
  6. A bung according to claim 5, characterised in that the lower part (21) of the plastics stopper (16) has a cross slot (24).
EP95103173A 1994-03-10 1995-03-06 Bunghole plug with venting device Revoked EP0671339B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9403990U 1994-03-10
DE9403990U DE9403990U1 (en) 1994-03-10 1994-03-10 Overpressure protection

Publications (2)

Publication Number Publication Date
EP0671339A1 EP0671339A1 (en) 1995-09-13
EP0671339B1 true EP0671339B1 (en) 1997-10-22

Family

ID=6905720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103173A Revoked EP0671339B1 (en) 1994-03-10 1995-03-06 Bunghole plug with venting device

Country Status (4)

Country Link
EP (1) EP0671339B1 (en)
JP (1) JPH0834465A (en)
AT (1) ATE159490T1 (en)
DE (2) DE9403990U1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29513256U1 (en) * 1995-08-18 1995-12-07 Mauser-Werke GmbH, 50321 Brühl Closure for a container opening
DE50007377D1 (en) * 2000-04-22 2004-09-16 Ibs Filtran Kunststoff Metall Locking system for molded plastic parts
KR200483975Y1 (en) * 2014-10-27 2017-07-21 주식회사 청원프라텍 Airtight lid for storage container for fermented food

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620938A (en) * 1949-09-02 1952-12-09 Package Devices Inc Container closure
DE921299C (en) * 1953-01-29 1954-12-13 Georg Waidmann Lid valve for opening canning jars
DE3216408C2 (en) * 1982-05-03 1986-10-23 F.H. Vogt GmbH & Co KG Vertrieb von Kunststoffverpackungen, 3260 Rinteln Screw cap for a container
GB2128967A (en) * 1982-11-02 1984-05-10 Fanning Peter Caps for fermentation vessels
DE3325665A1 (en) * 1983-07-15 1985-01-24 Peroxid-Chemie GmbH, 8023 Höllriegelskreuth COVER WITH VENTILATION VALVE
DE3932118A1 (en) * 1989-09-26 1991-04-04 Heinrichs & Co Kg Schrauben Un Fastening screw with ventilation system - consists of top and bottom part with air vents between and centre pin
DE9217291U1 (en) * 1992-07-20 1993-02-18 Mauser-Werke Gmbh, 5040 Bruehl Screw cap

Also Published As

Publication number Publication date
EP0671339A1 (en) 1995-09-13
ATE159490T1 (en) 1997-11-15
JPH0834465A (en) 1996-02-06
DE59500822D1 (en) 1997-11-27
DE9403990U1 (en) 1994-06-09

Similar Documents

Publication Publication Date Title
EP0759876B1 (en) Cap with self-closing valve
DE4236338C2 (en) Drum lid
DE3839351A1 (en) SCREW CAP FOR BOTTLES WITH VENTILATION DEVICE
DE1657139C3 (en) Closure cap for hermetically sealing a container
DE1298931B (en) Container for holding corrosive liquids
DE102016009484B3 (en) Container closure system
EP0417554A1 (en) Container with threaded cap
DE29702772U1 (en) Ventilation valve made of plastic for containers
DE2812197A1 (en) CONTAINER CAP
EP0455172B1 (en) One-time use collection and transport container
DE102018116295A1 (en) Screw cap with controlled seal
EP0671339B1 (en) Bunghole plug with venting device
EP1010635B1 (en) Closure cap for a drug vessel with closed shaped container neck
DE2756350C2 (en) Lining-free cap made of plastic
EP0650446B1 (en) Threaded plug
WO2007082675A1 (en) Screw cap
DE29502309U1 (en) Container with screw cap
EP0907577A1 (en) Device for closure of containers
DE4241341C1 (en) Closure, in particular bottle closure
EP1000871A1 (en) Venting valve
DE2806759C3 (en) Bunghole closure for a pressure vessel
DE19738301C2 (en) Safety lock for containers
WO2001064540A1 (en) Closure stopper
DE7506692U (en) Automatic pressure equalization valve
DE4007325A1 (en) Screw closure cap for threaded-topped container - incorporates seal-unit with base, annular groove and annular ridge

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

17P Request for examination filed

Effective date: 19950306

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI NL PT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19961209

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 DK ES FR GB GR IE IT LI NL PT SE

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19971022

Ref country code: LI

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

Effective date: 19971022

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: 19971022

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19971022

Ref country code: DK

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

Effective date: 19971022

Ref country code: CH

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

Effective date: 19971022

REF Corresponds to:

Ref document number: 159490

Country of ref document: AT

Date of ref document: 19971115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59500822

Country of ref document: DE

Date of ref document: 19971127

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19980122

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980122

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980123

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980123

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

Ref country code: AT

Payment date: 19980220

Year of fee payment: 4

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

Ref country code: FR

Payment date: 19980319

Year of fee payment: 4

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

Ref country code: BE

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

Effective date: 19980331

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19971022

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

Ref country code: DE

Payment date: 19980430

Year of fee payment: 4

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

Ref country code: IE

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

Effective date: 19980605

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref document number: 77108

Country of ref document: IE

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLAV Examination of admissibility of opposition

Free format text: ORIGINAL CODE: EPIDOS OPEX

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: PROTECHNA S.A.

Effective date: 19980720

BERE Be: lapsed

Owner name: MAUSER-WERKE G.M.B.H.

Effective date: 19980331

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 19990723