EP0033912A1 - Packaging container, particularly spray-can - Google Patents

Packaging container, particularly spray-can Download PDF

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Publication number
EP0033912A1
EP0033912A1 EP81100660A EP81100660A EP0033912A1 EP 0033912 A1 EP0033912 A1 EP 0033912A1 EP 81100660 A EP81100660 A EP 81100660A EP 81100660 A EP81100660 A EP 81100660A EP 0033912 A1 EP0033912 A1 EP 0033912A1
Authority
EP
European Patent Office
Prior art keywords
fold
packaging container
lid
fuselage
rump
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.)
Withdrawn
Application number
EP81100660A
Other languages
German (de)
French (fr)
Inventor
Friedrich Siefert
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.)
Blechwarenfabriken Zuechner & Co GmbH
Original Assignee
Blechwarenfabriken Zuechner & Co 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
Application filed by Blechwarenfabriken Zuechner & Co GmbH filed Critical Blechwarenfabriken Zuechner & Co GmbH
Publication of EP0033912A1 publication Critical patent/EP0033912A1/en
Withdrawn legal-status Critical Current

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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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body

Definitions

  • the invention relates to a packaging container, in particular a spray can, with a fuselage made of sheet steel, onto which a lid and base, each made of sheet steel, are crimped along with a sealant along a cover fold and a base fold.
  • the invention has for its object to improve the packaging container in the area of the lid fold and / or the bottom fold and in particular its handling. exercise properties and operational safety.
  • top fold and / or the bottom fold is wholly or partially slipped into an interior of the fuselage.
  • the top fold and / or the bottom fold are sometimes no longer exposed but protected within the outer contour of the fuselage.
  • the outer contour of the packaging container is therefore less jagged and has become more reliable even with considerable internal pressure, as is usual with spray cans.
  • a fuselage fold is formed on at least one end of the fuselage by the insertion.
  • the hull fold protects the top rebate and / or the bottom rebate from external impact or impact.
  • the torso fold is flanged over an outer end of the lid fold and / or the bottom fold.
  • This flanging can e.g. be directed radially inwards.
  • a design of the packaging container which is also favorable for handling is achieved on the one hand and on the other hand a securing of the cover fold and / or the base fold against an undesired folding of these folds out of the fuselage is achieved.
  • Such packaging containers can e.g. internal pressures up to 12 bar can be applied.
  • the aforementioned advantages and in particular the security against the folds being turned back can be increased further in that, according to one embodiment of the invention, the hull fold, the cover fold and / or the base fold is partially encircled. This flanging can e.g. first in the radial direction and then axially towards the interior of the packaging container.
  • a body 1 of a packaging container 2 is manufactured cylindrically from sheet steel by means of longitudinal seam welding.
  • sheet steel i.e. tinplate, or chromed steel sheet can be used.
  • the can body 1 is provided at its ends with a recess 3 and 4, respectively.
  • the next manufacturing step is, according to FIG. 3, the application of flanges 5 and 6 at the ends of the fuselage 1.
  • the fuselage 1 is connected to a cover 7 made of sheet steel along a cover fold 8 and to a base 9 made of sheet steel along a base fold 10.
  • An opening 11 of the cover 7 later receives a spray valve, not shown, in a manner known per se.
  • the further processing consists in that a pressure force is exerted in the direction of arrows 12 and 13 according to FIG. 4 over the circumference of the D: _ L kelfalzes 8 and Bodenfalzes 10 in the axial direction.
  • the top fold 8 and the bottom fold 10 are turned into an interior 16 of the fuselage 1 to form fuselage folds 14 and 15 at the ends of the fuselage 1.
  • FIG. 6 also shows a final state, in which, however, the cover fold 8 is only partially inserted into the interior 16, that is to say it projects beyond the fuselage fold 14 in the axial direction.
  • the hull fold 14 is flanged radially inwards via an outer end of the lid fold 8.
  • FIG. 8 also shows a final state in which, compared to FIG. 7, the torso fold 14, the lid fold 8 is flanged radially and additionally encompasses axially inwards.
  • torso fold 14 and lid fold 8 shown in FIGS. 5 to 8 can also be used in any combination as relative positions between the torso fold 15 and the bottom fold 10 are used. however, these combinations are not shown to simplify the drawing. It is also possible for only the top fold 8 or only the bottom fold 10 to be wholly or partially slipped into the interior 16 of the fuselage 1, while the other fold in the sense of FIG. 4 remains completely outside the interior 16.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

In a packaging container (2), particularly a spray can, made of steel plate, a lid (7) and a bottom (9) are connected tightly to a rump (1) along a lid fold (8) and a bottom fold (10). The lid fold (8) and/or the bottom fold (10) is completely or partially inserted in an inner space (16) of the rump. The rump folds (14, 15) formed during this insertion, may project in the axial direction beyond the neighbouring fold (9, 10) or be beaded radially inwards over an outer end of the fold (8, 10) or beaded radially and axially, partially gripping around the fold (8, 10). <IMAGE>

Description

Die Erfindung betrifft einen Verpackungsbehälter, insbesondere eine Sprühdose, mit einem aus Stahlblech bestehenden Rumpf, an den ein jeweils aus Stahlblech bestehender Deckel und Boden unter Zwischenfügung einer Dichtungsmasse längs eines Deckelfalzes und eines Bodenfalzes angefalzt sind.The invention relates to a packaging container, in particular a spray can, with a fuselage made of sheet steel, onto which a lid and base, each made of sheet steel, are crimped along with a sealant along a cover fold and a base fold.

Bei bekannten Verpackungsbehältern dieser Art sind der Deckelfalz und der Bodenfalz voll sichtbar. Dies hat ästhetische und Gebrauchsnachteile. In den durch diese Falzlage bestehenden Außenrillen des Verpackungsbehälters kann sich leicht Schmutz absetzen. Ferner können Stoß- und Schlageinwirkungen die bekannten freiliegenden Deckel- und Bodenfalze und damit die Sicherheit des Verpackungsbehälters beeinträchtigen.In known packaging containers of this type, the top fold and the bottom fold are fully visible. This has aesthetic and usage disadvantages. Dirt can easily settle in the outer grooves of the packaging container due to this fold position. Furthermore, impact and impact effects can impair the known exposed lid and bottom folds and thus the safety of the packaging container.

Der Erfindung liegt die Aufgabe zugrunde, den Verpackungsbehälter im Bereich des Deckelfalzes und/oder des Bodenfalzes zu verbessern und insbesondere seine Handha-. bungseigenschaften und Betriebssicherheit zu erhöhen.The invention has for its object to improve the packaging container in the area of the lid fold and / or the bottom fold and in particular its handling. exercise properties and operational safety.

Diese Aufgabe ist nach der Erfindung dadurch gelöst, daß der Deckelfalz und/oder der Bodenfalz ganz oder teilweise in einen Innenraum des Rumpfes gestülpt ist. Dadurch liegt der Deckelfalz und/oder der Bodenfalz teilweise nicht mehr frei sondern geschützt innerhalb der Außenkotur des Rumpfes. Die Außenkontur des Verpackungsbehälteis ist dadurch weniger zerklüftet und wurde betriebssicherer auch bei beträchtlichem Innendruck, wie er bei Sprühdosen üblich ist.This object is achieved according to the invention in that the top fold and / or the bottom fold is wholly or partially slipped into an interior of the fuselage. As a result, the top fold and / or the bottom fold are sometimes no longer exposed but protected within the outer contour of the fuselage. The outer contour of the packaging container is therefore less jagged and has become more reliable even with considerable internal pressure, as is usual with spray cans.

Nach einer ausführungsform der Erfindung ist durch das Einstülpen an wenigstens einem Rumpfende eine Rumpffalte gebildet. Die Rumpffalte schützt den Deckelfalz und/oder den Bodenfalz vor Beeinträchtigung durch Stoß oder Schlag von außen.According to one embodiment of the invention, a fuselage fold is formed on at least one end of the fuselage by the insertion. The hull fold protects the top rebate and / or the bottom rebate from external impact or impact.

Besonders günstige Verhältnisse ergeben sich, wenn die Rumpffalte gemäß einer Ausführungsform der Erfindung in axialer Richtung über den Deckelfalz und/oder über den Bodenfalz hinausragt. Beim Bodenfalz bildet die Rumpffalte mit ihrem äußersten Ende dann eine günstige Standfläche von maximalem Durchmesser.Particularly favorable conditions result if the torso fold protrudes axially beyond the lid fold and / or the bottom fold according to one embodiment of the invention. With the bottom rebate, the fuselage fold with its outermost end then forms a favorable standing surface of maximum diameter.

Nach einer weiteren Ausführungsform der Erfindung ist die Rumpffalte über ein äußeres Ende des Deckelfalzes und/ oder des Bodenfalzes umgebördelt. Diese Umbördelung kann z.B. radial nach innen gerichtet sein. Dadurch wird einerseits eine auch für die Handhabung günstige Gestaltung des Verpackungsbehälters und zum anderen eine Sicherung des Deckelfalzes und/oder des Bodenfalzes gegen ein unerwünschtes Rückstülpen dieser Falze aus dem Rumpf heraus erreicht. Solche Verpackungsbehälter können z.B. mit Betriebsinnendrücken bis zu 12 bar beaufschlagt werden.According to a further embodiment of the invention, the torso fold is flanged over an outer end of the lid fold and / or the bottom fold. This flanging can e.g. be directed radially inwards. As a result, a design of the packaging container which is also favorable for handling is achieved on the one hand and on the other hand a securing of the cover fold and / or the base fold against an undesired folding of these folds out of the fuselage is achieved. Such packaging containers can e.g. internal pressures up to 12 bar can be applied.

Bei noch höheren Innendrücken in dem Verpackungsbehälter können die vorerwähnten Vorteile und insbesondere die Sicherheit gegen das Rückstülpen der Falze noch dadurch erhöht werden, daß nach einer Ausführungsform der Erfindung die Rumpffalte, den Deckelfalz und/oder den Bodenfalz teilweise umgreifend,umgebördelt ist. Diese Umbördelung kann z.B. zunächst in radialer Richtung und dann axial zum Innenraum des Verpackungsbehälters hin erfolgen.In the case of even higher internal pressures in the packaging container, the aforementioned advantages and in particular the security against the folds being turned back can be increased further in that, according to one embodiment of the invention, the hull fold, the cover fold and / or the base fold is partially encircled. This flanging can e.g. first in the radial direction and then axially towards the interior of the packaging container.

Nachfolgend wird die Erfindung anhand der in den Zeichnungen dargestellten Ausführungsbeispiele näher erläutert. Es zeigen:

  • Fig. 1 bis 4 bekannte Herstellungsstufen für einen Verpackungsbehälter,
  • Fig. 5 bis 8 jeweils einen teilweisen Längsschnitt durch unterschiedliche erfindungsgemäße Verpackungsbehälter.
The invention is explained in more detail below on the basis of the exemplary embodiments illustrated in the drawings. Show it:
  • 1 to 4 known stages of manufacture for a packaging container,
  • 5 to 8 each show a partial longitudinal section through different packaging containers according to the invention.

Gemäß Fig. 1 wird ein Rumpf 1 eines Verpackungsbehälters 2 zylindrisch aus Stahlblech mittels Längsnahtschweissung hergestellt. Es kann z.B. verzinntes Stahlblech, also Weißblech, oder auch verchromtes Stahlblech verwendet werden.1, a body 1 of a packaging container 2 is manufactured cylindrically from sheet steel by means of longitudinal seam welding. For example, tinned sheet steel, i.e. tinplate, or chromed steel sheet can be used.

Gemäß Fig. 2 wird der Dosenrumpf 1 an seinen Enden jeweils mit einer Einziehung 3 und 4 versehen.2, the can body 1 is provided at its ends with a recess 3 and 4, respectively.

Der nächste Herstellungsschritt ist gemäß Fig. 3 die Anbringung von Bördelungen 5 und 6 an den Enden des Rumpfes 1.The next manufacturing step is, according to FIG. 3, the application of flanges 5 and 6 at the ends of the fuselage 1.

Gemäß Fig. 4 ist der Rumpf 1 mit einem Deckel 7 aus Stahlblech längs eines Deckelfalzes 8 und mit einem Boden 9 aus Stahlblech längs eines Bodenfalzes 10 verbunden. Eine Öffnung 11 des Deckels 7 nimmt später in an sich bekannter Weise ein nicht dargestelltes Sprühventil auf.According to FIG. 4, the fuselage 1 is connected to a cover 7 made of sheet steel along a cover fold 8 and to a base 9 made of sheet steel along a base fold 10. An opening 11 of the cover 7 later receives a spray valve, not shown, in a manner known per se.

Bis hierher handelt es sich um bekannte Verfahrensschritte, wobei jedoch die Schritte gemäß den Figuren 2 bis 4 so ausgeführt werden, daß in dem Fertigungsstadium gemäß Fig. 4 der Deckelfalz 8 und der Bodenfalz 10 eine bezüglich des zylindrischen Teiles des Rumpfes 1 günstige radiale Lage für die weitere Bearbeitung erhalten. Der Deckelfal 8 und der Bodenfalz 10 sind im übrigen in an sich bekannter Weise durch eine zwischengefügte Dichtungsmasse gasdicht auch gegenüber erheblichem Innendruck in dem Verpackungsbe--4- hälter 2 verstegelt.Up to this point there are known method steps, but the steps according to FIGS. 2 to 4 are carried out in such a way that in the production stage according to FIG received further processing. The cover case 8 and the bottom fold 10 are otherwise gas-tight in a manner known per se by means of an interposed sealing compound, even against considerable internal pressure in the packaging area. container 2 messed up.

Die weitere Bearbeitung besteht darin, daß in Richtung Pfeilen 12 und 13 gemäß Fig. 4 über cen Umfang des D:_Lkelfalzes 8 und des Bodenfalzes 10 in axialer Richtung eine Druckkraft ausgeübt wird. Dadurch werden der Deckelfalz 8 und der Bodenfalz 10 unter Bildung von Rumpffalten 14 und 15 an den Enden des Rumpfes 1 in einen Innenraum 16 des Rumpfes 1 gestülpt. Durch geeignete Wahl der vorerwähnten relativen radialen Lage des Rumpfes 1 einerseits und des Deckelfalzes 8 und des Bodenfalzes 10 andererseits kann man erreichen, daß in dem Endzustand gemäß den Figuren 5 bis 8 die Stahlblechlagen der Rumpffalten 14, 15 sowie des Deckelfalzes 8 und des Bodenfalzes 10 mit definierter Radialkraft nach außen hin vorgespannt aneinander anliegen. Dadurch läßt sich erreichen, daß der Deckelfalz 8 und der Bodenfalz 10 sich im eingestülpten Endzustand nur minimal radial erstrecken und dadurch entsprechend wenig stören.The further processing consists in that a pressure force is exerted in the direction of arrows 12 and 13 according to FIG. 4 over the circumference of the D: _ L kelfalzes 8 and Bodenfalzes 10 in the axial direction. As a result, the top fold 8 and the bottom fold 10 are turned into an interior 16 of the fuselage 1 to form fuselage folds 14 and 15 at the ends of the fuselage 1. By a suitable choice of the aforementioned relative radial position of the fuselage 1 on the one hand and the cover fold 8 and the bottom fold 10 on the other hand, it can be achieved that in the final state according to FIGS rest against each other with a defined radial force, biased towards the outside. It can thereby be achieved that the cover fold 8 and the base fold 10 extend only minimally radially in the inserted end state and therefore do not interfere accordingly.

In dem eingestülpten Endzustand gemäß Fig. 5 ragen die Rumpffalten 14, 15 in axialer Richtung über den Deckelfalz 8 und den Bodenfalz 10 hinaus.5, the torso folds 14, 15 protrude in the axial direction beyond the top fold 8 and the bottom fold 10.

Fig. 6 zeigt ebenfalls einen Endzustand, bei dem allerdings der Deckelfalz 8 nur teilweise in den Innenraum 16 hineingestülpt ist, also in axialer Richtung über die Rumpffalte 14 hinausragt.FIG. 6 also shows a final state, in which, however, the cover fold 8 is only partially inserted into the interior 16, that is to say it projects beyond the fuselage fold 14 in the axial direction.

Bei dem Endzustand gemäß Fig. 7 ist die Rumpffalte 14 über ein äußeres Ende des Deckelfalzes 8 radial nach innen umgebördelt.In the final state according to FIG. 7, the hull fold 14 is flanged radially inwards via an outer end of the lid fold 8.

Auch Fig. 8 zeigt einen Endzustand, bei dem allerdings gegenüber Fig. 7 die Rumpffalte 14, den Deckelfalz 8 radial und zusätzlich axial nach innen hin umgreifend, umgebördelt ist.FIG. 8 also shows a final state in which, compared to FIG. 7, the torso fold 14, the lid fold 8 is flanged radially and additionally encompasses axially inwards.

Die in den Figuren 5 bis 8 gezeigten unterschiedlichen relativen Lagen von Rumpffalte 14 und Deckelfalz 8 können in beliebiger Kombination auch als relative Lagen zwischen der Rumpffalte 15 und dem Bodenfalz 10 verwendet werden. diese Kombinationen sind jedoch zur Vereinfachung der zeichnerischen Darstellung nicht gezeigt. Es kann auch nur Jer Deckelfalz 8 oder nur der Bodenfalz 10 ganz oder teilweise in den Innenraum 16 des Rumpfes 1 gestülpt sein, während der andere Falz im Sinne von Fig. 4 völlig außerhalb des Innenraums 16 verbleibt.The different relative positions of torso fold 14 and lid fold 8 shown in FIGS. 5 to 8 can also be used in any combination as relative positions between the torso fold 15 and the bottom fold 10 are used. however, these combinations are not shown to simplify the drawing. It is also possible for only the top fold 8 or only the bottom fold 10 to be wholly or partially slipped into the interior 16 of the fuselage 1, while the other fold in the sense of FIG. 4 remains completely outside the interior 16.

Claims (5)

1. Verpackungsbehälter (2), insbesondere Sprühdose, mit einem aus Stahlblech bestehenden Rumpf (1), an den ein jeweils aus Stahlblech bestehender Deckel (7) und Boden (9) unter Zwischenfügung einer Dichtungsmasse längs eines Deckelfalzes (8) und eines Bodenfalzes (10) angefalzt sind, dadurch gekennzeichnet, daß der Deckelfalz (8) und/oder der Bodenfalz (10) ganz oder teilweise in einen Innenraum (16) des Rumpfes (1) gestülpt ist.1. Packaging container (2), in particular spray can, with a fuselage (1) made of sheet steel, to which a lid (7) and bottom (9) each made of sheet steel with the interposition of a sealant along a lid fold (8) and a bottom fold ( 10) are crimped, characterized in that the top fold (8) and / or the bottom fold (10) is wholly or partially slipped into an interior (16) of the fuselage (1). 2. Verpackungsbehälter nach Anspruch 1, dadurch gekennzeichnet, daß durch das Einstülpen an wenigstens einem Rumpfende eine Rumpffalte (14,15) gebildet ist.2. Packaging container according to claim 1, characterized in that a hull fold (14, 15) is formed by the insertion at least one end of the fuselage. 3. Verpackungsbehälter nach Anspruch 2, dadurch gekennzeichnet, daß die Rumpffalte (14,15) in axialer Richtung über den Deckelfalz (8) und/oder über den Bodenfalz (10) hinausragt (Fig. 5, 7, 8).3. Packaging container according to claim 2, characterized in that the torso fold (14, 15) protrudes in the axial direction over the top fold (8) and / or over the bottom fold (10) (Fig. 5, 7, 8). 4. Verpackungsbehälter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Rumpffalte (14, 15) über ein äußeres Ende des Deckelfalzes (8) und/oder des Bodenfalzes (10) umgebördelt ist (Fig. 7, 8).4. Packaging container according to claim 2 or 3, characterized in that the hull fold (14, 15) over an outer end of the lid fold (8) and / or the bottom fold (10) is flanged (Fig. 7, 8). 5. Verpackungsbehälter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Rumpffalte (14, 15), den Deckelfalz (8) und/oder den Bodenfalz (10) teilweise umgreifend, umgebördelt ist (Fig. 8).5. Packaging container according to claim 2 or 3, characterized in that the torso folds (14, 15), the top fold (8) and / or the bottom fold (10) partially encompassed, flanged (Fig. 8).
EP81100660A 1980-02-09 1981-01-30 Packaging container, particularly spray-can Withdrawn EP0033912A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19808003529 DE8003529U1 (en) 1980-02-09 1980-02-09 Packaging container, in particular spray can
DE8003529U 1980-02-09

Publications (1)

Publication Number Publication Date
EP0033912A1 true EP0033912A1 (en) 1981-08-19

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ID=6712752

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EP81100660A Withdrawn EP0033912A1 (en) 1980-02-09 1981-01-30 Packaging container, particularly spray-can

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EP (1) EP0033912A1 (en)
JP (1) JPS56161940A (en)
BE (1) BE891026Q (en)
DE (1) DE8003529U1 (en)
ES (1) ES265377Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141513A1 (en) * 1983-09-12 1985-05-15 Continental Can Company, Inc. Improved strength aerosol dome
EP1184103A2 (en) * 2000-09-01 2002-03-06 CONSAFE ApS A method for producing a sheet metal container, such a container and an apparatus for performing the method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01182243A (en) * 1987-12-28 1989-07-20 Toyo Seikan Kaisha Ltd Can body and its manufacturing method
JP2523678Y2 (en) * 1995-03-17 1997-01-29 コンチネンタル キャン カンパニー，インコ−ポレ−テド Aerosol can

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2356811B2 (en) * 1972-12-04 1976-11-04 Aluminium Suisse S.A., Chippis (Schweiz) METAL AEROSOL CONTAINER AND METHOD OF ITS MANUFACTURING

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2356811B2 (en) * 1972-12-04 1976-11-04 Aluminium Suisse S.A., Chippis (Schweiz) METAL AEROSOL CONTAINER AND METHOD OF ITS MANUFACTURING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141513A1 (en) * 1983-09-12 1985-05-15 Continental Can Company, Inc. Improved strength aerosol dome
EP1184103A2 (en) * 2000-09-01 2002-03-06 CONSAFE ApS A method for producing a sheet metal container, such a container and an apparatus for performing the method
EP1184103A3 (en) * 2000-09-01 2003-05-28 CONSAFE ApS A method for producing a sheet metal container, such a container and an apparatus for performing the method

Also Published As

Publication number Publication date
JPS56161940A (en) 1981-12-12
ES265377U (en) 1983-01-16
ES265377Y (en) 1983-07-01
BE891026Q (en) 1982-03-01
DE8003529U1 (en) 1980-05-14

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