EP0203579B1 - Safety device for a fuze - Google Patents

Safety device for a fuze Download PDF

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Publication number
EP0203579B1
EP0203579B1 EP86107224A EP86107224A EP0203579B1 EP 0203579 B1 EP0203579 B1 EP 0203579B1 EP 86107224 A EP86107224 A EP 86107224A EP 86107224 A EP86107224 A EP 86107224A EP 0203579 B1 EP0203579 B1 EP 0203579B1
Authority
EP
European Patent Office
Prior art keywords
piston
slider
rotor
safety device
fuze
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86107224A
Other languages
German (de)
French (fr)
Other versions
EP0203579A3 (en
EP0203579A2 (en
Inventor
Horst Dinger
Horst Moosmann
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.)
Gebrueder Junghans GmbH
Original Assignee
Gebrueder Junghans 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 Gebrueder Junghans GmbH filed Critical Gebrueder Junghans GmbH
Publication of EP0203579A2 publication Critical patent/EP0203579A2/en
Publication of EP0203579A3 publication Critical patent/EP0203579A3/en
Application granted granted Critical
Publication of EP0203579B1 publication Critical patent/EP0203579B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/18Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a carrier for an element of the pyrotechnic or explosive train is moved
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/24Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42CAMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/29Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids operated by fluidic oscillators; operated by dynamic fluid pressure, e.g. ram-air operated

Definitions

  • the invention relates to a safety device for a rotor of an igniter, in particular a rocket igniter, in which an air storage space is provided, in which a piston is mounted and wherein a slide engages the piston, which locks the rotor in the rest position of the piston and it in the displaced position of the piston releases.
  • a safety device for an igniter of the type mentioned is known from US-A-4,380,179.
  • This known device requires electro-mechanical interlocks to control the movement of a piston.
  • a piston within a cylinder head divides the central cylindrical chamber into an upper and lower volume, which are arranged airtight to one another.
  • pressure is built up so that the piston is displaced out of the cylinder head in the direction of the rotor.
  • the slider is disengaged from the rotor so that it can turn into focus.
  • DE-26 40 782 A1 describes a safety device on an igniter in which the rotor carries an ignition means.
  • the rotor is secured by an axially displaceable steady bolt. This bolt releases the rotor when the projectile is fired, whereby a torsion spring rotates the rotor into focus.
  • An air storage space 1 is formed on a detonator. This is connected via a line 2 to an opening, not shown, at the head of the rocket.
  • the dynamic pressure acting on the head when the rocket is launched acts via line 2 in the air storage space 1.
  • the direction of launch is represented by the arrow P.
  • a drive member 24 rotatable on the rotor axis A engages in a toothing 23 of the swivel member 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Actuator (AREA)
  • Automotive Seat Belt Assembly (AREA)

Description

Die Erfindung betrifft eine Sicherungseinrichtung für einen Rotor eines Zünders, insbesondere eines Raketenzünders, bei dem ein Luftstauraum vorgesehen ist, in dem ein Kolben gelagert ist und wobei am Kolben ein Schieber angreift, der den Rotor in Ruhestellung des Kolbens arretiert und ihn in Verschiebestellung des Kolbens freigibt.The invention relates to a safety device for a rotor of an igniter, in particular a rocket igniter, in which an air storage space is provided, in which a piston is mounted and wherein a slide engages the piston, which locks the rotor in the rest position of the piston and it in the displaced position of the piston releases.

Eine Sicherungseinrichtung für einen Zünder der eingangs genannten Art ist aus der US-A-4 380 179 bekannt. Diese bekannte Einrichtung benötigt elektro-mechanische Verriegelungen, um die Bewegung eines Kolbens zu steuern. Ein Kolben innerhalb eines Zylinderkopfes teilt die zentrale zylindrische Kammer in ein oberes und unteres Volumen, welche luftdicht zueinander angeordnet sind. Bei dem Abschuß des Zünders wird ein Druck aufgebaut, so daß der Kolben aus dem Zylinderkopf heraus in Richtung auf den Rotor verschoben wird. Dabei wird der Schieber außer Eingriff mit dem Rotor gebracht, so daß dieser in Scharfstellung drehen kann.A safety device for an igniter of the type mentioned is known from US-A-4,380,179. This known device requires electro-mechanical interlocks to control the movement of a piston. A piston within a cylinder head divides the central cylindrical chamber into an upper and lower volume, which are arranged airtight to one another. When the detonator is fired, pressure is built up so that the piston is displaced out of the cylinder head in the direction of the rotor. The slider is disengaged from the rotor so that it can turn into focus.

In der DE-26 40 782 A1 ist eine Sicherungseinrichtung an einem Zünder beschrieben, bei dem der Rotor ein Zündmittel trägt. Der Rotor ist dabei in der Sicherstellung durch einen axial verschieblichen Beharrungsbolzen gehalten. Dieser Bolzen gibt den Rotor beim Abfeuern des Geschosses frei, wobei eine Drehfeder den Rotor in Scharfstellung dreht.DE-26 40 782 A1 describes a safety device on an igniter in which the rotor carries an ignition means. The rotor is secured by an axially displaceable steady bolt. This bolt releases the rotor when the projectile is fired, whereby a torsion spring rotates the rotor into focus.

Aufgabe der Erfindung ist es, eine Sicherungseinrichtung für einen Zünder der eingangs genannten Art vorzuschlagen, bei welcher der Rotor durch die Wirkung des Staudruckes mit wenigen und technisch einfachen Teilen entsichert wird.The object of the invention is to propose a safety device for an igniter of the type mentioned in the introduction, in which the rotor is unlocked with a few and technically simple parts by the effect of the dynamic pressure.

Erfindungsgemäß ist die obige Aufgabe bei einer Sicherungseinrichtung dadurch gelöst, daß der Kolben, dessen Bewegungsrichtung quer zur Abschußrichtung des Zünders steht, mittels eines federbelasteten Bolzens in Sicherstellung gehalten ist, und der Schieber mit einer Schrägfläche einen Hebel beaufschlagt, der bei Schieberbewegung über eine Schwenkglied ein Triebglied antreibt, welches durch Spannen einer Spannfeder den Rotor in Scharfstellung schwenkt.According to the invention, the above object is achieved in a safety device in that the piston, the direction of movement of which is transverse to the firing direction of the detonator, is held in place by means of a spring-loaded bolt, and the slide acts on a lever with an inclined surface which acts on a lever during slide movement via a swivel member Drives drive element, which swivels the rotor into focus by tensioning a tension spring.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung eines Ausführungsbeispiels. In der Zeichnung zeigen:

  • Figur 1 eine Teilansicht einer Sicherungseinrichtung im Schnitt längs der Linie I-I nach Figur 2,
  • Figur 2 eine Aufsicht des in Figur 1 dargestellten Teils,
  • Figur 3 eine Aufsicht der Sicherungseinrichtung und
  • Figur 4 einen Schnitt längs der Linie IV-IV nach Figur 3.
Advantageous refinements of the invention result from the subclaims and the following description of an exemplary embodiment. The drawing shows:
  • FIG. 1 shows a partial view of a securing device in section along the line II according to FIG. 2,
  • FIG. 2 shows a top view of the part shown in FIG. 1,
  • Figure 3 is a supervision of the security device and
  • 4 shows a section along the line IV-IV of Figure 3.

An einem Zünder ist ein Luftstauraum 1 ausgebildet. Dieser ist über eine Leitung 2 mit einer nicht näher dargestellten Öffnung am Kopf der Rakete verbunden. Der beim Abschuß der Rakete am Kopf wirkende Staudruck wirkt über die Leitung 2 in dem Luftstauraum 1. Die Abschußrichtung ist durch den Pfeil P dargestellt.An air storage space 1 is formed on a detonator. This is connected via a line 2 to an opening, not shown, at the head of the rocket. The dynamic pressure acting on the head when the rocket is launched acts via line 2 in the air storage space 1. The direction of launch is represented by the arrow P.

In dem Luftstauraum 1 ist ein Kolben 3 gelagert. Dieser ist quer zur Abschußrichtung P verschieblich. Der Kolben 3 weist an seinem dem Luftstauraum 1 abgewandten Ende einen Führungskonus 4 auf, der in einem zylindrischen Abschnitt 5 ausläuft. Der zylindrische Abschnitt 5 greift in eine kreisförmige Öffnung 6 eines Schiebers 7. Mittels eines Schraubkopfes 8 ist der Schieber 7 am Kolben 3 gehalten. In der in Figur 1 dargestellten Stellung liegt der Schraubkopf 8 in einer Vertiefung 9 des Schiebers 7. Dadurch ist der Schieber 7 bei bei Umweltprüfungen erfolgenden Stößen gegen ein Verschieben gesichert.A piston 3 is mounted in the air storage space 1. This can be moved transversely to the firing direction P. At its end facing away from the air storage space 1, the piston 3 has a guide cone 4 which ends in a cylindrical section 5. The cylindrical section 5 engages in a circular opening 6 of a slide 7. The slide 7 is held on the piston 3 by means of a screw head 8. In the position shown in FIG. 1, the screw head 8 lies in a recess 9 in the slide 7. As a result, the slide 7 is secured against displacement in the event of impacts occurring during environmental tests.

Der Kolben 3 weist eine Nut 10 auf, in die ein mit einer Feder 11 belasteter Bolzen 12 eingreift. Der Bolzen 12 sichert den Kolben 3 gegen eine Verschiebung, wenn bei Umweltprüfungen in Verschieberichtung des Kolbens 3 wirkende Stöße ausgeübt werden.The piston 3 has a groove 10 into which a pin 12 loaded with a spring 11 engages. The bolt 12 secures the piston 3 against displacement when 3 impacts are exerted during environmental tests in the displacement direction of the piston.

Der Schieber 7 greift mit einem Fortsatz 13 in eine Ausnehmung 14 eines Rotors 15. Dieser ist dadurch in Sicherstellung gegen eine Drehung um seine Achse A gehalten.The slider 7 engages with an extension 13 in a recess 14 of a rotor 15. This is thereby secured against rotation about its axis A.

Am dem Fortsatz 13 ist eine Schrägfläche 16 ausgebildet (vgl. Figur 2). Dieser ist ein Hebel 17 zugeordnet. Der Hebel 17 ist an seinem Ende 18 drehbar gelagert (vgl. Figur 3). Mit einem an seinem anderen Ende vorgesehenen Zapfen 19 greift der Hebel 17 in einen Schlitz 20 eines segmentförmigen Schwenkgliedes 21. Zwischen dem Ende 18 und dem Zapfen 19 liegt der Hebel 17 mit einer Nase 22 an dem Fortsatz 13 an.An inclined surface 16 is formed on the extension 13 (cf. FIG. 2). This is assigned a lever 17. The lever 17 is rotatably supported at its end 18 (see FIG. 3). With a pin 19 provided at its other end, the lever 17 engages in a slot 20 of a segment-shaped pivot member 21. Between the end 18 and the pin 19, the lever 17 rests on the extension 13 with a nose 22.

In eine Verzahnung 23 des Schwenkgliedes 21 greift ein auf der Rotorachse A drehbares Triebglied 24 ein. An dem Triebglied 24 ist das eine Ende 25 einer Spannfeder 26 befestigt, deren anderes Ende 27 am Rotor 15 angreift (vgl. Figur 4).A drive member 24 rotatable on the rotor axis A engages in a toothing 23 of the swivel member 21. On the drive member 24, one end 25 of a tension spring 26 is attached, the other end 27 engages the rotor 15 (see FIG. 4).

Wird ausgehend von der in den Figuren dargestellten Sicherstellung der Zünder bzw. die Rakete abgeschossen, dann löst sich unter der Wirkung seiner Trägheit bei der Abschußbeschleunigung der Bolzen 12 aus der Nut 10. Der an der Raketenspitze auftretende Staudruck verschiebt den Kolben 3 in Richtung des Pfeiles K (vgl. Figur 1). Dabei wandert der Schraubkopf 8 aus der Vertiefung 9 und der Führungskonus 4 verschiebt den Schieber 7, so daß sich dessen Fortsatz 13 aus der Ausnehmung 14 bewegt. Der Rotor 15 ist dadurch frei, ohne sich jedoch schon in die Scharfstellung zu drehen.If the detonator or the missile is fired on the basis of the securing shown in the figures, then under the effect of its inertia, the bolt 12 is released from the groove 10 during the launch acceleration. The dynamic pressure occurring at the tip of the missile displaces the piston 3 in the direction of the arrow K (see Figure 1). The screw head 8 moves out of the recess 9 and the guide cone 4 moves the slide 7 so that its extension 13 moves out of the recess 14. The rotor 15 is thus free, but does not turn into the focus.

Gleichzeitig verschwenkt die Schrägfläche 16 den Hebel 17 in Richtung des Pfeiles H. Dadurch wird das Schwenkglied 21 verschwenkt, wobei dessen Verzahnung 23 das Triebglied 24 dreht. Durch die Drehung des Triebgliedes 24 wird die Spannfeder 26 gespannt, die infolgedessen den Rotor 15 um etwa 260° in Scharfstellung dreht.At the same time, the inclined surface 16 pivots the lever 17 in the direction of the arrow H. As a result, the pivot member 21 is pivoted, the toothing 23 of which rotates the drive member 24. By the rotation of the drive member 24, the tension spring 26 is tensioned, which consequently rotates the rotor 15 by about 260 ° in the focused position.

Durch die Anordnung des Kolbens 3 so, daß seine Bewegung K im Winkel von 90° zur Abschußrichtung P steht, ist erreicht, daß auf den Kolben 3 im wesentlichen nur der Staudruck wirkt und die Abschußbeschleunigung auf seine Bewegung praktisch keinen Einfluß hat. Außerdem ist der Kolben 3 dadurch auf einfache Weise mit dem Bolzen 12 zu sichern bzw. zu entsichern. Gleichzeitig ist durch den gesicherten Kolben 3 auch der Schieber 7 formschlüssig gehalten.By arranging the piston 3 so that its movement K is at an angle of 90 ° to the firing direction P, it is achieved that essentially only the dynamic pressure acts on the piston 3 and the firing acceleration on its movement practically no influence. In addition, the piston 3 is thereby easy to secure or unlock with the bolt 12. At the same time, the slide 7 is also held positively by the secured piston 3.

Bei Umweltprüfungen auf den Zünder ausgeübte Stöße können zu einer Bewegung des Hebels 17 und damit des Schwenkgliedes 21 führen. Dies stört nicht, da sich eine solche Bewegung nicht auf den Rotor 15 übertragen kann, weil er durch den Fortsatz 13 des Schiebers 7 in Sicherstellung gehalten ist. Bei der Montage wird das Triebglied 24 mit der Spannfeder 26 so-in Gegenrichtung-vorgespannt zusammengebaut, daß der Rotor 15 die Tendenz hat, sich in Sicherstellung zu drehen.Impacts exerted on the igniter during environmental tests can lead to a movement of the lever 17 and thus of the swivel member 21. This does not interfere, since such a movement cannot be transferred to the rotor 15 because it is held in a safe position by the extension 13 of the slide 7. During assembly, the drive member 24 is assembled with the tension spring 26 so that it is biased in the opposite direction so that the rotor 15 tends to rotate in a secured manner.

Claims (4)

1. A safety device for a rotor (15) of a fuze, more especially a rocket fuze, in the case of which an air ram chamber (1) is provided, in which a piston (3) is mounted, and in the case of which there acts on the piston (3) a slider (7) which locks the rotor (15) in the rest position (3) and releases it in the displacement position of the piston (3), characterised in that the piston (3), the direction of movement (K) of which stands transversely to the firing direction (P) of the fuze, is held in the safe position by means of a spring-loaded pin (12), and the slider (7) acts with a sloping surface (16) on a lever (17), which upon slider movement by way of a swivel member (21) drives a driving member (24), which as a result tensioning of a cocking spring (26) swivels the rotor (15) into the armed position.
2. A safety device according to Claim 1, characterised in that the slider (7) is held non-displaceably in a form-locking manner in the safe position on the piston (3).
3. A safety device according to Claims 1 and 2, characterised in that a depression (9), into which a part (8) of the piston (3) engages in the safe position, is provided on the slider (7).
4. A safety device according to Claims 1 to 3, characterised in that the piston (3) displaces the slider (7) by way of a guide cone (4) engaging in an aperture (6) of the slider (7).
EP86107224A 1985-05-31 1986-05-28 Safety device for a fuze Expired - Lifetime EP0203579B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853519517 DE3519517A1 (en) 1985-05-31 1985-05-31 SECURING DEVICE FOR A LITER
DE3519517 1985-05-31

Publications (3)

Publication Number Publication Date
EP0203579A2 EP0203579A2 (en) 1986-12-03
EP0203579A3 EP0203579A3 (en) 1987-09-02
EP0203579B1 true EP0203579B1 (en) 1990-09-05

Family

ID=6272088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86107224A Expired - Lifetime EP0203579B1 (en) 1985-05-31 1986-05-28 Safety device for a fuze

Country Status (3)

Country Link
US (1) US4683823A (en)
EP (1) EP0203579B1 (en)
DE (2) DE3519517A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102235842A (en) * 2011-06-22 2011-11-09 国营红林机械厂 Fuse safety device based on air pressure difference

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101470A (en) * 1991-04-10 1992-03-31 Alliant Techsystems Inc. Fiber optic light sensor for safing and arming a fuze
USH1603H (en) * 1995-11-07 1996-11-05 The United States Of America As Represented By The Secretary Of The Navy Flare with safe-and-arm ignition system
GB9714947D0 (en) * 1997-07-16 2003-01-29 Royal Ordnance Plc A fuze
US6679174B1 (en) 2002-09-26 2004-01-20 The United States Of America As Represented By The Secretary Of The Navy Flare igniter with a slurry groove
US6588343B1 (en) 2002-09-26 2003-07-08 The United States Of America As Represented By The Secretary Of The Navy Igniter system for a flare
US6634301B1 (en) 2002-09-26 2003-10-21 The United States Of America As Represented By The Secretary Of The Navy Enclosed ignition flare igniter
DE102008053990B4 (en) * 2008-10-30 2010-07-22 Junghans Microtec Gmbh Igniter for a projectile
FR2981443B1 (en) * 2011-10-17 2013-11-29 Sme GAS GENERATOR PROVIDED WITH SAFETY BODY FOR SLOW HEATING CASES

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420612A (en) * 1939-11-14 1947-05-13 Harry J Nichols Fuse
US2969737A (en) * 1952-01-23 1961-01-31 Charles F Bild Arming locking device for a fuze
US3143071A (en) * 1960-11-29 1964-08-04 Special Devices Inc Self-armed and actuated bomb
US3362333A (en) * 1967-01-16 1968-01-09 Navy Usa Pressure operated arming mechanism
DE1703687A1 (en) * 1968-06-28 1971-12-30 Schaberger & Co Gmbh Josef Warhead fuse for stabilized missiles
US4092927A (en) * 1968-11-14 1978-06-06 Avco Corporation Delay arming mechanism for fuzes
US4015533A (en) * 1976-06-15 1977-04-05 The United States Of America As Represented By The Secretary Of The Air Force Dual pressure sensing safing and arming mechanism
DE2640782C3 (en) * 1976-09-10 1979-09-06 Gebrueder Junghans Gmbh, 7230 Schramberg Safety device on detonators
US4380197A (en) * 1978-05-26 1983-04-19 The United States Of America As Represented By The Secretary Of The Navy Safety and arming device/contact fuze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102235842A (en) * 2011-06-22 2011-11-09 国营红林机械厂 Fuse safety device based on air pressure difference

Also Published As

Publication number Publication date
DE3673871D1 (en) 1990-10-11
US4683823A (en) 1987-08-04
EP0203579A3 (en) 1987-09-02
EP0203579A2 (en) 1986-12-03
DE3519517A1 (en) 1986-12-04
DE3519517C2 (en) 1987-04-30

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