EP0504481B1 - Protective profile strip for internally mounted contact cable - Google Patents

Protective profile strip for internally mounted contact cable Download PDF

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Publication number
EP0504481B1
EP0504481B1 EP91120675A EP91120675A EP0504481B1 EP 0504481 B1 EP0504481 B1 EP 0504481B1 EP 91120675 A EP91120675 A EP 91120675A EP 91120675 A EP91120675 A EP 91120675A EP 0504481 B1 EP0504481 B1 EP 0504481B1
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EP
European Patent Office
Prior art keywords
strips
cavity
profile strip
pressure part
pressure
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
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EP91120675A
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German (de)
French (fr)
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EP0504481A1 (en
Inventor
Norbert Herwegh
Anton Gisler
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Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
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Daetwyler AG Schweizerische Kabel Gummi und Kunststoffwerke
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/40Safety devices, e.g. detection of obstructions or end positions
    • E05F15/42Detection using safety edges
    • E05F15/44Detection using safety edges responsive to changes in electrical conductivity
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Type of wing
    • E05Y2900/132Doors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/40Application of doors, windows, wings or fittings thereof for gates

Definitions

  • the invention relates to a protective profile strip for an electrical contact tube arranged in the interior thereof according to the preamble of patent claim 1.
  • Electrical contact hoses have been known for some time. Inside, they have two diametrically opposite electrically conductive strips. By deformation of the contact tube, i.e. by squeezing it, the two strips touch each other, short-circuiting a circuit and triggering a signal.
  • the distance the two strips travel until they come into contact is naturally small. This does not matter as long as the contact hose is laid in floors, for example, where it is actuated by traffic moving over it (which can also include pedestrians). However, if the contact hose is used for other purposes, for example as a so-called pinch protection on a horizontally moving door, on which it is mounted on its vertical edge, this deformation path is no longer sufficient.
  • the contact tube is then packed into the inside of a profile strip, which has a much larger deformation path, but which in turn compresses the contact tube in the first phase of the deformation, so that the requested signal is triggered immediately and thus the risk of damage or injury to the pinched object ( body parts such as arms or hands can also be avoided).
  • a further tape leads to the corresponding upper corner of the printing part, the side of each tape pointing towards the printing part being curved, the outer side being straight, so that the tapes are thinnest at half their height and should actually be easy to deform in order to guide the above-mentioned pressure rib straight down to the contact tube.
  • this safety edge has curved outer bands between the pressure part and the base. These therefore bend even with relatively low vertical forces. This deflection or bulge, however, takes place outwards, so special care must be taken to ensure that there is sufficient space for it, which in turn causes problems due to the penetration of dirt and foreign bodies into this space.
  • the invention therefore aims to avoid the disadvantage mentioned and to create a protective profile strip at which are deflected laterally or obliquely by a suitable arrangement and shaping of the individual parts in such a way that they lead to the greatest possible vertical displacement of the pressure ribs actuating the contact tube, with at the same time minimal deformation resistance of the strip when these forces act.
  • Such a protective profile strip of the type mentioned is characterized by the characterizing features of claim 1.
  • the protective profile strip is divided into three zones, namely a deformation zone 1, a contact tripping zone 2 arranged below it and a third zone attached below this zone 2, the foot zone 3. These zones will now be explained in more detail in order.
  • the deformation zone 1 is intended to absorb pressure forces and to transmit them to the contact tube 4. These compressive forces can result, for example, from contact with any object acting on this zone that actually or only moves relative to the deformation zone. Body parts of the human being, such as arms, hands or even only fingers, which may not be injured when being pinched, can also be considered as objects. This determines the permissible deformation path; The so-called overtravel after the contact has been triggered must also be taken into account. Depending on these requirements, the deformation zone 1 is therefore higher or lower. Of the The deformation path must in any case be large enough to be able to absorb both forces which act parallel to the longitudinal central axis AA of the profile strip and those up to an angle of at least 45 ° to this axis.
  • the deformation zone 1 has a sealing region 11 and two mutually parallel walls 12. Both the shape of the sealing area, the top section of which seals against a corresponding object (door frame, wall, equivalent sealing area of another, opposing protective profile strip), and the length of the walls 12 are based on the previously mentioned requirements. In order to achieve the certain resistance or stiffness against deformation which is also mentioned, a number of transverse webs 13 are provided between the walls 12 at certain distances from one another. With a suitable choice of the thickness of the walls 12 and the transverse webs 13, a box-shaped structure results that meets these requirements.
  • the contact release zone 2 contains the contact tube 4 already mentioned. This is known per se, which is why it should only be mentioned here that its upper part 41 and its lower part 42 each have an electrically conductive surface on their mutually opposite inner sides, which touch when the contact tube is pressed together and like that trigger an electrical signal.
  • the contact tube 4 is located within a cavity 21, which of course must be deformable itself.
  • the walls 23 are designed such that their inner side 26 facing the cavity runs obliquely, ie not parallel to the other side, so that the wall at the transition to the base 22 is thicker than at its upper end, which forms a connection point 27. As a result, the walls 23 become very stiff against deflection. This stiffness is reinforced by the fact that the centering belts 24 are not arranged horizontally but at an angle, which reduces the height of the walls 23.
  • each connection point 27 acts like a joint about which the centering band 24 in question can swing like a lever arm.
  • This enables the pressure part 25 to approach the base 22 under an axial pressure or such a pressure component, thereby compressing the contact tube 4 and thus bringing about the triggering of the contact without having to carry out such a large transverse displacement because of the horizontal yielding of the walls 23 that a Compression of the contact tube 4 is no longer possible.
  • two ribs 28 projecting into the cavity 21 are attached in the head 250 of the pressure part 25. These are arranged as far as possible from one another so that even when the pressure part 25 is at a steep incline, one of these ribs 28 still presses on the contact tube 4.
  • the ribs are attached so that their tips 280 are exactly each are located vertically under the point at which the corresponding outer side 251 of the pressure part 25 meets the upper side of the corresponding tension band 24.
  • the pressure part 25 in the exemplary embodiment shown consists of a horizontal one Side of a triangle-forming base plate 252 and two struts 253 forming the other sides of this triangle, which run obliquely towards the connecting head 250 but do not unite.
  • the base plate 252 simultaneously forms the end of the deformation zone 1. They and the struts 253 close one Cavity 254, which is only due to manufacturing technology.
  • the pressure part 25 could also be designed as a full body.
  • the pressure part 25 is surrounded on its outside by two curved, film-like connecting pieces, which are to be referred to as tension bands for reasons to be explained; they are designated 29 in the figure. For reasons that are still to be explained, they are much thinner than, for example, the walls of the deformation zone 1 or the pressure part 25. They extend from the outer ends of the base plate 252 to the connection points 27 mentioned above between the tension bands 24 and the walls 23 Course on their outer and inner sides, which is most appropriately executed against the pressure part 25, ensures, even with their resulting constant but small thickness, a bending which practically does not provide any resistance to the corresponding displacement of the pressure part 25 downward under a purely axial pressure effect , so that contact is triggered even with low pressure forces.
  • the head 250 with the ribs 28 is now much lower than this new axis of rotation C, it can only pivot about this with a strong downward movement. At least the right rib 28 reaches the contact tube 4 and presses it together, so that the required contact is triggered.
  • tapes 29 are referred to as drawstrings.
  • the aforementioned stretching of the one band 29 puts it under tension and makes it practically a lever arm, which leads to the position definition of the mentioned pivot axis C.
  • both the centering bands 24 and the curvature of the tensioning bands 29 are of significant importance. If the former were not present and the drawstrings 29 were rectilinear, there would be no pivoting movement as described above, but the base 252 of the printing part would shift strongly to the right, in the manner of a parallelogram shift. In such a case, the parallelogram would be formed by the base plate 252, the two exactly vertical drawstrings 29 and the base 22, and the pivoting of the drawstrings would take place around the connection point 27. However, this would result in such a strong lateral displacement of the head 250 that it is no longer certain whether one of the ribs 28 comes into contact with the contact tube 4 at all.

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  • Rigid Pipes And Flexible Pipes (AREA)
  • Push-Button Switches (AREA)
  • Details Of Indoor Wiring (AREA)

Description

Die Erfindung betrifft eine Schutzprofilleiste für einen in ihrem Innern angeordneten elektrischen Kontaktschlauch gemäss dem Oberbegriff des Patentanspruches 1.The invention relates to a protective profile strip for an electrical contact tube arranged in the interior thereof according to the preamble of patent claim 1.

Elektrische Kontaktschläuche sind seit einiger Zeit bekannt. In ihrem Innern weisen sie zwei einander diametral gegenüberliegende elektrisch leitende Streifen auf. Durch Deformation des Kontaktschlauches, d.h. durch Zusammendrücken desselben, berühren sich die beiden Streifen, schliessen so einen Stromkreis kurz und lösen damit ein Signal aus.Electrical contact hoses have been known for some time. Inside, they have two diametrically opposite electrically conductive strips. By deformation of the contact tube, i.e. by squeezing it, the two strips touch each other, short-circuiting a circuit and triggering a signal.

Der Weg, den die beiden Streifen bis zu ihrem Kontakt zurücklegen, ist naturgemäss klein. Das spielt keine Rolle, solange der Kontaktschlauch z.B. in Böden verlegt wird, wo er vom darüber sich bewegenden Verkehr (der auch Fussgänger umfassen kann) betätigt wird. Wenn jedoch der Kontaktschlauch anderweitig verwendet wird, z.B. als sogenannter Einklemmschutz an einem sich horizontal verschiebenden Tor, an welchen er an dessen vertikalen Rand montiert ist, reicht dieser Deformationsweg nicht mehr aus. Man verpackt dann den Kontaktschlauch ins Innere einer Profilleiste, die einen wesentlich grösseren Deformationsweg aufweist, die aber schon in der ersten Phase der Deformation ihrerseits den Kontaktschlauch zusammendrückt, sodass das verlangte Signal sofort ausgelöst und damit die Gefahr der Beschädigung bzw. Verletzung des eingeklemmten Gegenstandes (es kann sich auch um Körperteile wie Arme oder Hände handeln) vermieden wird.The distance the two strips travel until they come into contact is naturally small. This does not matter as long as the contact hose is laid in floors, for example, where it is actuated by traffic moving over it (which can also include pedestrians). However, if the contact hose is used for other purposes, for example as a so-called pinch protection on a horizontally moving door, on which it is mounted on its vertical edge, this deformation path is no longer sufficient. The contact tube is then packed into the inside of a profile strip, which has a much larger deformation path, but which in turn compresses the contact tube in the first phase of the deformation, so that the requested signal is triggered immediately and thus the risk of damage or injury to the pinched object ( body parts such as arms or hands can also be avoided).

Die Ausbildung einer solchen Schutzprofilleiste ist einfach, wenn die auf sie einwirkende Kraft in derselben Richtung wirken würde, also in der Bewegungsrichtung der beiden Streifen des Kontaktschlauches. Wesentlich schwieriger wird es, wenn aber auch Kräfte aufzunehmen sind, die unter einem z.T. sehr grossen Winkel zu dieser Richtung einwirken. Hierzu bedarf es besonderer Ausbildungen der Leiste, damit diese sich trotz des grossen Winkels, unter der die Kraft auf sie einwirkt und unter der sie sich dementsprechend seitlich verbiegt, den Kontaktschlauch dennoch auf kürzestem Weg zwecks sofortiger Signalauslösung zusammendrückt.The formation of such a protective profile strip is simple if the force acting on it would act in the same direction, that is to say in the direction of movement of the two strips of the contact tube. It becomes much more difficult if, however, forces are also to be absorbed that are partially very large angle to this direction. This requires special training of the bar so that despite the large angle at which the force acts on it and at which it accordingly bends laterally, the contact tube still compresses in the shortest possible way for immediate signal triggering.

Unter den verschiedenen vorgeschlagenen Leisten ist diejenige nach EP-A-0104414 zu erwähnen, die in verschiedenen Ausführungsformen dargestellt ist. In Frage kommen nur die am Schluss dargestellten Varianten. Sie zeigen ausser Deformationszone, Basis und dreieckförmigen Druckteil auch einen Hohlraum, in welchem allerdings bei zwei Varianten ein Kanal angeordnet ist, in welchem der Kontaktschlauch angeordnet ist und in den eine einzige Druckrippe von rechteckigem Querschnitt hineinragt. Diese bildet eine Art Fortsetzung oder Vorsprung der unteren Ecke (des Kopfes) des dreieckförmigen Druckteils. Von diesem Kopf aus führen beidseitig ihn zentrierende Bänder genau horizontal zu vertikalen Wänden, die den somit genau rechteckigen Hohlraum begrenzen. Von jedem Verbindungspunkt von Band und Wand führt in gerader Fortsetzung zu letzterer ein weiteres Band zur entsprechenden oberen Ecke des Druckteils, wobei die gegen den Druckteil hin gerichtete Seite jedes Bandes gebogen, die äussere Seite geradlinig ist, sodass die Bänder auf ihrer halben Höhe am dünnsten sind und sich eigentlich leicht deformieren lassen sollten, um die obenerwähnte Druckrippe möglichst geradlinig nach unten zum Kontaktschlauch zu führen.Among the various proposed strips, the one according to EP-A-0104414 is to be mentioned, which is shown in various embodiments. Only the variants shown at the end come into question. In addition to the deformation zone, base and triangular pressure part, they also show a cavity in which, in two variants, a channel is arranged, in which the contact tube is arranged and into which a single pressure rib of rectangular cross section projects. This forms a kind of continuation or projection of the lower corner (the head) of the triangular pressure part. From this head, bands that center it on both sides lead exactly horizontally to vertical walls, which thus delimit the precisely rectangular cavity. From each point of connection of the tape and the wall, in a straight continuation to the latter, a further tape leads to the corresponding upper corner of the printing part, the side of each tape pointing towards the printing part being curved, the outer side being straight, so that the tapes are thinnest at half their height and should actually be easy to deform in order to guide the above-mentioned pressure rib straight down to the contact tube.

Zwar deformieren sich die Bänder, führen aber zu unerwünschten Folgen. Bei einem Druck genau in der vertikalen Symmetrieachse der Leiste muss dieser wegen der aussen geraden Bändern zuerst einen bereits hohen Wert annehmen, bis sich eines der Bänder endlich durchbiegt. Erreicht der Druck diesen Deformationswert nicht, wird der Kontaktschlauch nicht betätigt, was bereits unzulässig ist. Biegt sich aber eines der Bänder durch (wegen kleinster Asymmetrien in der Form sind es nie beide), erfolgt diese Durchbiegung nach innen. Am genannten Verbindungspunkt liegt das untere Bandende nun in einer Schräglage, und dies hat zur Folge, dass auch das obere Ende der Wand die gleiche Schräglage einnehmen muss. Das kann es aber nur, indem die Wand sich um ihr unteres Ende, also bei der Basis, durchbiegt, was wegen ihrer Höhe und der dadurch geringen Steifigkeit leicht möglich ist. Die Folge ist eine starke Querverschiebung der Zentrierbänder und damit des Kopfes, mit nur geringer Vertikalverschiebung desselben. Gerade diese ist aber für das Zusammendrücken des Kontaktschlauches wesentlich. Die Zentrierbänder bleiben aber in ihrer zur Basis des Hohlraums parallelen Lage; die Rechteckform des Hohlraumes geht in eine annähernd einem Parallelogramm ähnliche Form über. Durch die starke Querverschiebung berührt die einzige Druckrippe sofort die entsprechende Wand des Kontaktschlauchkanals und verkantet sich an ihr, was jede Vertikalverschiebung praktisch verunmöglicht. Wo kein Kanal vorhanden ist, wird die Druckrippe weit neben den Kontaktschlauch verschoben und kann ihn gar nicht betätigen. Dies alles tritt sogar in verstärktem Mass dann auf, wenn die Druckkraft schräg von oben oder sogar seitlich auf die Leiste einwirkt.The ligaments deform, but they lead to undesirable consequences. If pressure is applied exactly in the vertical axis of symmetry of the bar, this must first assume an already high value because of the straight strips outside, until one of the strips finally bends. If the pressure does not reach this deformation value, the contact tube is not actuated, which is already inadmissible. However, if one of the bands bends (due to the smallest asymmetries in the shape, there are never both), this bending occurs inwards. At the connection point mentioned, the lower band end is now in an inclined position, and this means that the upper end of the wall must also assume the same inclined position. But it can only do that by bending the wall around its lower end, i.e. at the base, which is easily possible due to its height and the resulting low rigidity. The result is a strong transverse displacement of the centering bands and thus of the head, with only a slight vertical displacement of the same. However, this is essential for the compression of the contact tube. The centering bands remain in their position parallel to the base of the cavity; the rectangular shape of the cavity changes into a shape similar to a parallelogram. Due to the strong transverse displacement, the single pressure rib immediately touches the corresponding wall of the contact hose channel and tilts there, which practically makes any vertical displacement impossible. If there is no channel, the pressure rib is moved far next to the contact hose and cannot operate it at all. All of this occurs to an even greater extent when the pressure force acts obliquely from above or even laterally on the bar.

Das letztere gilt vor allem für die Sicherheitsschaltleiste nach DE-U-860 8064, denn bei dieser fehlen Zentrierbänder. Der einen oberen flachen Kontaktstreifen tragende Druckteil kann also bei seitlichen, also nicht vertikalen, Deformationskräften derart weit gegenüber dem unteren, ebenfalls flachen Kontaktstreifen verschoben werden, dass eine Berührung der beiden Streifen nicht mehr stattfindet. Bei geringerer Krafteinwirkung ist sie zwar noch denkbar. Wegen der fehlenden Zentrierung und der übrigen mangelhaften Ausgestaltung der Druckteilaufhängung ergibt sich dann aber mindestens eine derartige Schräglage des oberen Kontaktstreifens, dass diese Berührung nur noch am Rande stattfindet und somit eine sichere Kontaktgabe nicht mehr gewährleistet ist; bei einem Kontaktschlauch, wie ihn die vorliegende Erfindung verwendet, und bei dem die Kontaktflächen in seinem Inneren angeordnet sind, ist diese Kontaktgabe wegen des Widerstandes gegen seine Deformation noch eher möglich.The latter applies above all to the safety edge according to DE-U-860 8064, because centering tapes are missing from this. The pressure part carrying an upper flat contact strip can thus be displaced so far in relation to the lower, also flat contact strip in the case of lateral, that is to say non-vertical, deformation forces that the two strips no longer come into contact. With less force, it is still conceivable. Because of the lack of centering and the remaining defective configuration of the pressure part suspension, however, there is at least such an inclined position of the upper contact strip that this contact only takes place at the edge and thus reliable contact is no longer guaranteed; in the case of a contact tube as used in the present invention, and in which the contact surfaces are arranged in its interior, this contacting is even more possible because of the resistance to its deformation.

Hingegen weist diese Sicherheitsschaltleiste, im Gegensatz zu derjenigen nach EP-A 0 104 414, gekrümmte äussere Bänder zwischen Druckteil und der Basis auf. Diese verbiegen sich daher schon bei relativ geringen vertikalen Kräften. Diese Ausbiegung oder besser Ausbuchtung erfolgt aber nach aussen, sodass speziell darauf geachtet werden muss, dass hiefür genügend Raum vorhanden ist, was wiederum Probleme wegen des Eindringens von Schmutz und Fremdkörpern in diesen Raum mit sich zieht.On the other hand, in contrast to that according to EP-A 0 104 414, this safety edge has curved outer bands between the pressure part and the base. These therefore bend even with relatively low vertical forces. This deflection or bulge, however, takes place outwards, so special care must be taken to ensure that there is sufficient space for it, which in turn causes problems due to the penetration of dirt and foreign bodies into this space.

Die Erfindung bezweckt daher, die genannten Nachteil zu vermeiden und eine Schutzprofilleiste zu schaffen, bei welcher durch eine geeignete Anordnung und Formgebung der einzelnen Teile seitlich oder schräg wirkende Kräfte derart umgelenkt werden, dass sie zu einer möglichst starken Vertikalverschiebung der den Kontaktschlauch betätigenden Druckrippen führen, bei gleichzeitig minimalem Deformationswiderstand der Leiste bei Einwirkung dieser Kräfte.The invention therefore aims to avoid the disadvantage mentioned and to create a protective profile strip at which are deflected laterally or obliquely by a suitable arrangement and shaping of the individual parts in such a way that they lead to the greatest possible vertical displacement of the pressure ribs actuating the contact tube, with at the same time minimal deformation resistance of the strip when these forces act.

Eine solche Schutzprofilleiste der eingangs erwähnten Art ist durch die kennzeichnenden Merkmale des Anspruches 1 gekennzeichnet.Such a protective profile strip of the type mentioned is characterized by the characterizing features of claim 1.

Ein Ausführungsbeispiel der erfindungsgemässen Schutzprofilleiste ist aus der beiliegenden Zeichnung ersichtlich, die einen Querschnitt durch diese Leiste zeigt.An embodiment of the protective profile strip according to the invention can be seen from the accompanying drawing, which shows a cross section through this strip.

Die Schutzprofilleiste gliedert sich in drei Zonen, nämlich eine Deformationszone 1, eine unter ihr angeordnete Kontaktauslösezone 2 und eine unter dieser Zone 2 angebrachten Drittzone, die Fusszone 3. Diese Zonen sollen nun der Reihe nach näher erläutert werden.The protective profile strip is divided into three zones, namely a deformation zone 1, a contact tripping zone 2 arranged below it and a third zone attached below this zone 2, the foot zone 3. These zones will now be explained in more detail in order.

Die Deformationszone 1 ist zur Aufnahme von Druckkräften und zu deren Weiterleitung an den Kontaktschlauch 4 bestimmt. Diese Druckkräfte können beispielsweise von einer Berührung mit irgendeinem auf diese Zone einwirkenden Gegenstand herrühren, der sich tatsächlich oder nur relativ zur Deformationszone bewegt. Als Gegenstand können auch Körperteile des Menschen wie Arme, Hände oder auch nur Finger in Betracht kommen, die beim allfälligen Einklemmen nicht verletzt werden dürfen. Dies bestimmt den zulässigen Deformationsweg; zu berücksichtigen ist auch der sogenannte Nachlaufweg nach erfolgter Kontaktauslösung. Je nach diesen Anforderungen wird daher die Deformationszone 1 höher oder niedriger. Der Deformationsweg muss auf alle Fälle gross genug sein, um sowohl Kräfte, die parallel zur Längsmittelachse A-A der Profilleiste wirken, als auch solche bis zu einem Winkel von mindestens 45° zu dieser Achse aufnehmen können. Gerade im letzteren Fall ist es wichtig, dass auch derart schräg wirkende Kräfte so in die kontaktauslösende Zone 2 eingeleitet werden, dass eine sichere Kontaktauslösung erfolgt. Sie muss also eine gewisse Beständigkeit gegen Deformation aufweisen, die allerdings nicht so gross sein darf, dass die Deformationszone 1 nach kurzem Gebrauch bereits beschädigt wird.The deformation zone 1 is intended to absorb pressure forces and to transmit them to the contact tube 4. These compressive forces can result, for example, from contact with any object acting on this zone that actually or only moves relative to the deformation zone. Body parts of the human being, such as arms, hands or even only fingers, which may not be injured when being pinched, can also be considered as objects. This determines the permissible deformation path; The so-called overtravel after the contact has been triggered must also be taken into account. Depending on these requirements, the deformation zone 1 is therefore higher or lower. Of the The deformation path must in any case be large enough to be able to absorb both forces which act parallel to the longitudinal central axis AA of the profile strip and those up to an angle of at least 45 ° to this axis. In the latter case in particular, it is important that forces acting obliquely in this way are also introduced into contact-triggering zone 2 in such a way that reliable contact triggering takes place. It must therefore have a certain resistance to deformation, which, however, must not be so great that the deformation zone 1 is already damaged after a short use.

Im dargestellten Ausführungsbeispiel weist die Deformationszone 1 einen Dichtbereich 11 und zwei zueinander parallele Wände 12 auf. Sowohl die Form des Dichtbereiches, dessen oberster Abschnitt sich abdichtend gegen ein entsprechendes Objekt anlegt (Türrahmen, Mauer, gleichwertiger Dichtungsbereich einer anderen, gegenläufigen Schutzprofilleiste), als auch die Länge der Wände 12 richten sich nach den vorhin erwähnten Anforderungen. Um die ebenfalls erwähnte gewisse Beständigkeit oder Steifigkeit gegen Deformation zu erreichen, sind in gewissen Abständen voneinander eine Anzahl Querstege 13 zwischen den Wänden 12 vorgesehen. Bei einer geeigneten Wahl der Dicke der Wände 12 und der Querstege 13 ergibt sich ein kastenförmiges Gebilde, das diesen Anforderungen genügt.In the exemplary embodiment shown, the deformation zone 1 has a sealing region 11 and two mutually parallel walls 12. Both the shape of the sealing area, the top section of which seals against a corresponding object (door frame, wall, equivalent sealing area of another, opposing protective profile strip), and the length of the walls 12 are based on the previously mentioned requirements. In order to achieve the certain resistance or stiffness against deformation which is also mentioned, a number of transverse webs 13 are provided between the walls 12 at certain distances from one another. With a suitable choice of the thickness of the walls 12 and the transverse webs 13, a box-shaped structure results that meets these requirements.

Am unteren Ende der Deformationszone 1 schliesst sich die Kontaktauslösezone 2 an. Sie enthält den schon erwähnten Kontaktschlauch 4. Dieser ist an und für sich bekannt, weshalb hier nur erwähnt sei, dass sein Oberteil 41 und sein Unterteil 42 an ihren einander gegenüberliegenden Innenseiten je eine elektrisch leitende Fläche aufweisen, die sich beim Zusammenpressen des Kontaktschlauches berühren und derart ein elektrisches Signal auslösen. Der Kontaktschlauch 4 befindet sich innerhalb eines Hohlraumes 21, der natürlich selber deformierbar sein muss. Gebildet wird dieser durch eine Basis 22, die auch Teil der Fusszone 3 ist und zwei Rippen 220 zwecks Zentrierung des zwischen ihnen liegenden Kontaktschlauches 4 aufweist, durch zwei zueinander parallele Wände 23, zwei Zentrierbänder 24 und durch den Kopf 250 eines dreieckförmigen Druckteiles 25. Jede der Wände 23 ist so ausgeführt, dass ihre innere, dem Hohlraum zugewendete Seite 26 schräg verläuft, also nicht parallel zur anderen Seite, sodass die Wand am Uebergang zur Basis 22 dicker ist als an ihrem oberen, eine Verbindungsstelle 27 bildenden Ende. Dadurch werden die Wände 23 sehr steif gegen Durchbiegung. Verstärkt wird diese Steifigkeit noch dadurch, dass die Zentrierbänder 24 nicht horizontal, sondern schräg angeordnet sind, was die Höhe der Wände 23 verringert. Dadurch wirkt jede Verbindungsstelle 27 wie ein Gelenk, um welches das betreffende Zentrierband 24 wie ein Hebelarm schwingen kann. Dies ermöglicht es dem Druckteil 25, unter einen axialen Druck oder einer solchen Druckkomponente sich der Basis 22 zu nähern, dabei den Kontaktschlauch 4 zusammenzudrücken und so die Kontaktauslösung herbeizuführen , ohne wegen horizontalen Nachgebens der Wände 23 eine derart grosse Querverschiebung durchführen zu müssen, dass ein Zusammendrücken des Kontaktschlauches 4 nicht mehr möglich ist.At the lower end of the deformation zone 1 there is the contact release zone 2. It contains the contact tube 4 already mentioned. This is known per se, which is why it should only be mentioned here that its upper part 41 and its lower part 42 each have an electrically conductive surface on their mutually opposite inner sides, which touch when the contact tube is pressed together and like that trigger an electrical signal. The contact tube 4 is located within a cavity 21, which of course must be deformable itself. This is formed by a base 22, which is also part of the foot zone 3 and has two ribs 220 for the purpose of centering the contact tube 4 lying between them, by two mutually parallel walls 23, two centering bands 24 and by the head 250 of a triangular pressure part 25 The walls 23 are designed such that their inner side 26 facing the cavity runs obliquely, ie not parallel to the other side, so that the wall at the transition to the base 22 is thicker than at its upper end, which forms a connection point 27. As a result, the walls 23 become very stiff against deflection. This stiffness is reinforced by the fact that the centering belts 24 are not arranged horizontally but at an angle, which reduces the height of the walls 23. As a result, each connection point 27 acts like a joint about which the centering band 24 in question can swing like a lever arm. This enables the pressure part 25 to approach the base 22 under an axial pressure or such a pressure component, thereby compressing the contact tube 4 and thus bringing about the triggering of the contact without having to carry out such a large transverse displacement because of the horizontal yielding of the walls 23 that a Compression of the contact tube 4 is no longer possible.

Damit diese Kontaktauslösung auch stattfindet, sind im Kopf 250 des Druckteils 25 zwei in den Hohlraum 21 hineinragende Rippen 28 angebracht. Diese sind so weit wie möglich voneinander angeordnet, damit selbst bei starker Schräglage des Druckteiles 25 noch eine dieser Rippen 28 auf den Kontaktschlauch 4 drückt. Im dargestellten Beispiel sind die Rippen so angebracht, dass ihre Spitzen 280 sich jeweils genau vertikal unter jener Stelle befinden, an welcher die entsprechende Aussenseite 251 des Druckteils 25 mit der Oberseite des entsprechenden Zugbandes 24 zusammentrifft. Dadurch wird der grösstmögliche Abstand der Rippen 28 voneinander erreicht, was das Zusammendrücken des Kontaktschlauches 4 auch bei starker Schräglage des Druckteils 25 in die Rippen 28 ergibt, d.h. ohne Biegemomente im Kopf 250. Der Druckteil 25 besteht im dargestellten Ausführungsbeispiel aus einer horizontalen, die eine Seite eines Dreiecks bildenden Grundplatte 252 und zwei die andern Seiten dieses Dreiecks formenden, schräg gegen den sie verbindenden Kopf 250 hin verlaufenden, sich aber nicht vereinigenden Streben 253. Die Grundplatte 252 bildet gleichzeitig den Abschluss der Deformationszone 1. Sie und die Streben 253 schliessen einen Hohlraum 254 ein, der nur herstellungstechnisch bedingt ist. Im Prinzip könnte der Druckteil 25 auch als voller Körper ausgebildet sein.So that this contact tripping also takes place, two ribs 28 projecting into the cavity 21 are attached in the head 250 of the pressure part 25. These are arranged as far as possible from one another so that even when the pressure part 25 is at a steep incline, one of these ribs 28 still presses on the contact tube 4. In the example shown, the ribs are attached so that their tips 280 are exactly each are located vertically under the point at which the corresponding outer side 251 of the pressure part 25 meets the upper side of the corresponding tension band 24. As a result, the greatest possible distance between the ribs 28 is achieved, which results in the compression of the contact tube 4 even when the pressure part 25 is strongly inclined into the ribs 28, ie without bending moments in the head 250. The pressure part 25 in the exemplary embodiment shown consists of a horizontal one Side of a triangle-forming base plate 252 and two struts 253 forming the other sides of this triangle, which run obliquely towards the connecting head 250 but do not unite. The base plate 252 simultaneously forms the end of the deformation zone 1. They and the struts 253 close one Cavity 254, which is only due to manufacturing technology. In principle, the pressure part 25 could also be designed as a full body.

Der Druckteil 25 wird an seiner Aussenseite von zwei gebogenen, folienartigen Verbindungsstücken umfasst, die aus noch zu erläuternden Gründen als Zugbänder bezeichnet werden sollen; sie sind in der Figur mit 29 bezeichnet. Sie sind aus ebenfalls noch zu erläuternden Gründen wesentlich dünner als z.B. die Wände der Deformationszone 1 oder des Druckteils 25. Sie erstrecken sich von den äusseren Enden der Grundplatte 252 zu den weiter oben erwähnten Verbindungsstellen 27 zwischen den Zugbändern 24 und den Wänden 23. Ihr bogenförmiger Verlauf auf ihren Aussen- wie Innenseiten, der am zweckmässigsten gegen den Druckteil 25 hingerichtet ist, gewährleistet auch bei ihrer dadurch bedingten konstanten, jedoch geringen Dicke ein Zusammenbiegen, das bei einer rein axialen Druckeinwirkung der entsprechenden Verschiebung des Druckteils 25 nach unten praktisch keinen Widerstand entgegensetzt, sodass auch bei geringen Druckkräften eine Kontaktauslösung stattfindet. Es sei nun aber angenommen, dass eine solche Druckeinwirkung rein horizontal erfolgt, also genau senkrecht zur Längsmittelachse A-A, also ohne vertikale Kraftkomponente. Trotzdem muss auch in diesem Falle ein Zusammendrücken des Hohlraumes 21 und des darin befindlichen Kontaktschlauches 4 sichergestellt sein. Dies ergibt sich wie folgt:
Es sei angenommen, dass die horizontale Druckeinwirkung, also die Druckkraft, in der Figur von links her erfolge. Die Deformationszone 1 neigt sich daher nach rechts , unter Umständen wird sie dabei auch noch elastisch deformiert. Diese Neigung oder Kippbewegung überträgt sich auf den Druckteil 25, der sich nun ebenfalls nach rechts neigt. Da er von den Zentrierbändern 24 jedoch festgehalten wird, weil diese wegen den verbiegungssteifen Wänden 23 keine Querverschiebung ausführen können, ergibt sich kurzfristig eine Schwenkung des Druckteils 25 um eine horizontale Achse B, die sich im Kopf 250 befindet. Bei dieser Schwenkung wird aber die linke ober Ecke des Druckteils leicht angehoben. Dies hat eine sofortige Streckung des linken Zugbandes 29 zur Folge. Dieses kann jetzt höchstens noch um die Verbindungsstelle 27 schwenken, sodass ihr oberes Ende nicht mehr weiter ansteigen kann. Es entsteht eine neue Schwenkachse C, um welche sich jetzt der Druckteil 25 und die Deformationszone 1 drehen müssen, und die ebenfalls nicht mehr an Höhe gewinnt, sondern sich nur noch nach rechts verschiebt und hierbei sich wegen der Drehung, um die Verbindungsstelle sogar eher noch leicht nach unten bewegt. Weil jetzt der Kopf 250 mit den Rippen 28 sehr viel tiefer als diese neue Drehachse C liegt, kann er nur noch mit einer starken Abwärtsbewegung um diese schwenken. Mindestens die rechte Rippe 28 erreicht dabei den Kontaktschlauch 4 und drückt ihn zusammen, sodass die geforderte Kontaktauslösung zustande kommt.
The pressure part 25 is surrounded on its outside by two curved, film-like connecting pieces, which are to be referred to as tension bands for reasons to be explained; they are designated 29 in the figure. For reasons that are still to be explained, they are much thinner than, for example, the walls of the deformation zone 1 or the pressure part 25. They extend from the outer ends of the base plate 252 to the connection points 27 mentioned above between the tension bands 24 and the walls 23 Course on their outer and inner sides, which is most appropriately executed against the pressure part 25, ensures, even with their resulting constant but small thickness, a bending which practically does not provide any resistance to the corresponding displacement of the pressure part 25 downward under a purely axial pressure effect , so that contact is triggered even with low pressure forces. However, it is now assumed that such pressure is applied purely horizontally, that is to say exactly perpendicular to the longitudinal central axis AA, that is to say without a vertical force component. Nevertheless, compression of the cavity 21 and the contact tube 4 located therein must also be ensured in this case. This is as follows:
It is assumed that the horizontal pressure effect, i.e. the pressure force, takes place from the left in the figure. The deformation zone 1 therefore tilts to the right; under certain circumstances, it is also elastically deformed. This inclination or tilting movement is transferred to the pressure part 25, which now also inclines to the right. However, since it is held by the centering belts 24, because these cannot move laterally due to the rigid walls 23, there is a short-term swiveling of the pressure part 25 about a horizontal axis B, which is located in the head 250. With this pivoting, however, the upper left corner of the pressure part is raised slightly. This results in an immediate stretching of the left drawstring 29. This can now at most still pivot about the connection point 27, so that its upper end can no longer rise. A new pivot axis C is formed, about which the pressure part 25 and the deformation zone 1 now have to rotate, and which also no longer increases in height, but only shifts to the right and, because of the rotation, even more about the connection point moved slightly down. Because the head 250 with the ribs 28 is now much lower than this new axis of rotation C, it can only pivot about this with a strong downward movement. At least the right rib 28 reaches the contact tube 4 and presses it together, so that the required contact is triggered.

Nun ist auch klar, weshalb die Bänder 29 als Zugbänder bezeichnet werden. Die erwähnte Streckung des jeweils einen Bandes 29 versetzt dieses unter Zugspannung und macht es so praktisch zu einem Hebelarm, der zur Lagedefinition des erwähnten Schwenkachse C führt.Now it is also clear why the tapes 29 are referred to as drawstrings. The aforementioned stretching of the one band 29 puts it under tension and makes it practically a lever arm, which leads to the position definition of the mentioned pivot axis C.

Man ersieht nun, dass sowohl die Zentrierbänder 24 als auch die Krümmung der Zugbänder 29 eine wesentliche Bedeutung haben. Wären die ersteren nicht vorhanden und wären die Zugbänder 29 geradlinig, würde sich nämlich keine Schwenkbewegung wie vorhin beschrieben einstellen, sondern die Basis 252 des Druckteils würde sich stark nach rechts verschieben, und zwar nach Art einer Parallelogrammverschiebung. Das Parallelogramm wäre in einem solchen Falle durch die Grundplatte 252, die beiden genau vertikalen Zugbänder 29 und die Basis 22 gebildet, und die Schwenkung der Zugbänder würde um die Verbindungsstelle 27 erfolgen. Das hätte jedoch eine derart starke seitliche Verschiebung des Kopfes 250 zur Folge, dass nicht mehr sicher ist, ob noch eine der Rippen 28 überhaupt in Berührung mit dem Kontaktschlauch 4 kommt. Allenfalls würde eine solche Berührung ganz am rechten Rand des Kontaktschlauches noch stattfinden; dort sind jedoch keine elektrisch leitenden Flächen mehr vorhanden, sodass eine Kontaktauslösung trotz eines gewissen Zusammendrückens nicht mehr stattfinden könnte. Eine solche Fehlstellung des Kopfes 250 wird durch Zentrierbänder 24 und durch die gegenläufige Krümmung der beiden Zugbänder 29 verhindert. Wenn nämlich der Druck nicht genau horizontal, sondern schräg von oben kommt, biegen sich diese auch gegenläufig durch, was bei geraden Bändern nicht der Fall sein muss. Die gegenläufige Durchbiegung verhindert somit ebenfalls eine Seitenverschiebung des Druckteils 25 und trägt ferner, wie schon erwähnt, dazu bei, dass dieser sich unter allen Umständen nach unten, gegen den Kontaktschlauch 4 hin, bewegt.It can now be seen that both the centering bands 24 and the curvature of the tensioning bands 29 are of significant importance. If the former were not present and the drawstrings 29 were rectilinear, there would be no pivoting movement as described above, but the base 252 of the printing part would shift strongly to the right, in the manner of a parallelogram shift. In such a case, the parallelogram would be formed by the base plate 252, the two exactly vertical drawstrings 29 and the base 22, and the pivoting of the drawstrings would take place around the connection point 27. However, this would result in such a strong lateral displacement of the head 250 that it is no longer certain whether one of the ribs 28 comes into contact with the contact tube 4 at all. At most, such a contact would still take place on the very right edge of the contact tube; However, there are no longer any electrically conductive surfaces there, so that a contact triggering could no longer take place despite a certain compression. Such misalignment of the head 250 is prevented by centering bands 24 and by the opposite curvature of the two tension bands 29. If the pressure does not come exactly horizontally, but diagonally from above, they will bend in opposite directions, which does not have to be the case with straight belts. The opposing deflection thus also prevents a lateral displacement of the pressure part 25 and, as already mentioned, also contributes to the fact that the pressure part moves downwards against the contact tube 4 under all circumstances.

Claims (3)

  1. Protective profile strip for an internally mounted electric contact cable which can be compressed out of an initial position due to a deformation effected by the action of a force and which is located within a cavity (21), said cavity being defined at its upper side by a corner formed as a head (250), said corner being part of a substantially triangular, non-deformable pressure part (25) having pressure ribs (28) that extend into the cavity (21), as well as by two strips (24) extending from that corner and centering the latter, the cavity defined at its lower side by a base (22) above a basic zone (1), the latter serving for fixing the protective profile strip, and by each a wall piece (23) connecting the upper side of the cavity (21) with its lower one, said wall pieces (23), in order to being stiffened at their bases (22), having a greater thickness there than at their upper ends (27) thanks to a slanting wall each that faces the cavity, said centering strips (24) as well as two tensile strips (29) that lead to a deformation zone (1) above the pressure part (25) and take up the action of the force, being attached to said upper ends (27), characterized in that the centering strips (24) extend in an inclined way towards the upper ends (27) of the wall pieces (23) by steadily approaching the base (22) in order to maintain the wall pieces at a minimum height that results in stiffening said wall pieces, and that the tensile strips (29), in order to reduce their resistance against the approach of the pressure ribs (28) towards the contact cable due to the deformation of the protective profile strip, are arranged in an arch-like manner and are directed towards the interior respectively the pressure part (25).
  2. Protective profile strip according to Claim 1, characterized in that the pressure ribs (28) attached to the pressure part (25) are located exactly above that location in which the exterior faces (251) of the sides of the triangular pressure part (25) converging towards the head (250) blend into the upper faces of the strips (24) centering the pressure part (25).
  3. Protective profile strip according to Claim 1, characterized in that at the upper ends (27) of the wall pieces (23), besides said centering strips, there are also fixed the tensile strips (29) and that each one of these junctions formed by the wall ends (27) and the strips is reinforced by a roundness (26) at that face that faces the cavity.
EP91120675A 1990-12-20 1991-12-02 Protective profile strip for internally mounted contact cable Expired - Lifetime EP0504481B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4059/90A CH681335A5 (en) 1990-12-20 1990-12-20
CH4059/90 1990-12-20

Publications (2)

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EP0504481A1 EP0504481A1 (en) 1992-09-23
EP0504481B1 true EP0504481B1 (en) 1995-10-25

Family

ID=4269046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120675A Expired - Lifetime EP0504481B1 (en) 1990-12-20 1991-12-02 Protective profile strip for internally mounted contact cable

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EP (1) EP0504481B1 (en)
CH (1) CH681335A5 (en)
DE (1) DE59106770D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0859900B1 (en) * 1996-08-19 2001-10-17 I.E.E. International Electronics & Engineering S.à.r.l. Device for recognition of obstruction of closure
AU4704597A (en) 1996-10-03 1998-04-24 I.E.E. International Electronics & Engineering S.A.R.L. Method and device for determining several parameters of a seated person
DE102005016929A1 (en) 2005-04-13 2006-10-19 Menz, Jürgen Safety switching profile
DE202006010582U1 (en) * 2006-07-08 2006-09-14 Gummi-Welz Gmbh & Co. Kg Finger protection strip for automatic swing doors on buses comprises flexible profiled strip with chamber on free side containing contact strip which switches off door drive when outer wall of chamber is pressed inwards against it
DE202008013508U1 (en) * 2008-10-10 2009-01-08 Gummi-Welz Gmbh U. Co. Kg Gummi-Kunststofftechnik-Schaumstoffe Profile strip for a vehicle door with anti-trap protection
DE102012103763A1 (en) * 2012-04-27 2013-10-31 Bircher Reglomat Ag Safety Edge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118984A (en) * 1961-04-12 1964-01-21 Tapeswitch Corp Of America Door edge switch means
EP0104414B1 (en) * 1982-08-31 1987-05-06 Erwin Sick GmbH Optik-Elektronik An elongate resilient section at the closure edge of a closure
DE8608064U1 (en) * 1986-03-24 1986-05-07 Hüllwegen, Josef, Ing.(grad.), 4791 Altenbeken Safety edge for a closing edge of an opening that can be closed by means of a drive

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DE59106770D1 (en) 1995-11-30
EP0504481A1 (en) 1992-09-23
CH681335A5 (en) 1993-02-26

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