DE3307659A1 - KEY SWITCH - Google Patents

KEY SWITCH

Info

Publication number
DE3307659A1
DE3307659A1 DE19833307659 DE3307659A DE3307659A1 DE 3307659 A1 DE3307659 A1 DE 3307659A1 DE 19833307659 DE19833307659 DE 19833307659 DE 3307659 A DE3307659 A DE 3307659A DE 3307659 A1 DE3307659 A1 DE 3307659A1
Authority
DE
Germany
Prior art keywords
spring element
bell
contact
circuit board
shaped
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.)
Granted
Application number
DE19833307659
Other languages
German (de)
Other versions
DE3307659C2 (en
Inventor
Reinhard Deeg
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Priority to DE3307659A priority Critical patent/DE3307659C2/en
Priority to GB08410751A priority patent/GB2158290A/en
Priority to FR8406848A priority patent/FR2563940B1/en
Publication of DE3307659A1 publication Critical patent/DE3307659A1/en
Application granted granted Critical
Publication of DE3307659C2 publication Critical patent/DE3307659C2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/80—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the manner of cooperation of the contacts, e.g. with both contacts movable or with bounceless contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/008—Both contacts movable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/006—Only mechanical function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2217/00—Facilitation of operation; Human engineering
    • H01H2217/02—After travel

Landscapes

  • Push-Button Switches (AREA)

Description

R. Deeg-23R. Deeg-23

TastschaLterTactile switch

Die Erfindung geht aus von-einem TastschaLter gemäß dem Oberbegriff von Anspruch 1.The invention is based on a push button according to the The preamble of claim 1.

In der Fachzeitschrift "Markt & Technik'; Nr.4 vom 28.01 .1983 Seite 20 sind im ArtikeL "SchaLtmatten aus Kautschuk" TastschaLter der vorgenannten Art beschrieben.In the trade journal "Markt &Technik"; No. 4 from January 28, 1983 On page 20, in the article "Rubber mats" are tactile switches of the aforementioned type.

Die Praxis hat gezeigt, daß eine Kont aktz.ei tve rLängerung die Funktionssicherheit erhöht. Dieses wird z.B. gemäß der DE-OS 30 32 557 durch einen NachLauf im Hub des gummieLastisehen FedereLementes im AnschLuß an die eigentLiche Kontaktgabe erreicht. Das hierbei verwendete FedereLement ist in der HersteLLung jedoch reLativ aufwendig und weicht in Form und Höhe von handeLsüb Lichen FedereLemen ten ohne NachLaufeigenschaft ab.Practice has shown that a contact extension Functional reliability increased. This is e.g. according to DE-OS 30 32 557 due to an after-run in the hub of the gummieLastisehen Spring element in connection with the actual contact achieved. The spring element used here is, however, relatively complex to manufacture and has a different shape and height of commercially available spring elements without trailing properties away.

Die Aufgabe der Erfindung besteht daher darin, einen TastschaLter mit handeLsübLichen gLockenförmigen Federe Lementen Nach Laufei genschaft zu geben.The object of the invention is therefore to provide a push button switch with commercially available bell-shaped spring elements To be given after running.

Diese Aufgabe wird durch die im Anspruch 1 angegebenen MerkmaLe geLöst. Der Unteranspruch zeigt eine vorteilhafte AusgestaLtung des Erfindungsgegenstandes auf.This object is achieved by the features specified in claim 1. The dependent claim shows an advantageous one Design of the subject matter of the invention.

ZT/PT-vHy/föZT / PT-vHy / fö

15.02.T983 - 3 -02/15 T983 - 3 -

R. Deeg-23R. Deeg-23

Die durch die Erfindung erzielten Vorteile bestehen insbesondere darin, daß durch die Wölbung der flexiblen Leiterplatte die Kontaktgabe bereits nach etwa dem halben Tastenhub erfolgt, so daß eine definierte Kontaktzeit gesichert ist. Weiterhin kann wegen der Rückstellwirkung der Leiterplattenwölbung die Rückstellkraft des Federelements im gedrückten Zustand verringert oder ganz auf sie verzichtet werden. Die Kennlinie des Kraftverlaufs kann dadurch steiler ausgebildet werden, so daß der negative Kraftsprung stärker und damit die Betätigungsrückmeldung deutli eher wird.The advantages achieved by the invention exist in particular in that through the curvature of the flexible circuit board the contact is made after about half the key stroke, so that a defined contact time is ensured is. Furthermore, because of the restoring effect the curvature of the printed circuit board, the restoring force of the spring element when depressed, reduced or entirely on it be waived. The characteristic curve of the force curve can be made steeper, so that the negative Force jump stronger and thus the actuation feedback becomes clearer.

Anband eines Ausführungsbeispiels wird die Erfindung in Verbindung mit den Zeichnungen nachfolgend näher erläutert. Es zeigt:The invention is illustrated in FIG Connection with the drawings explained in more detail below. It shows:

Figur 1 die schematische Darstellung eines Tastschal te rs he r komm I i eher Art im Querschnitt.Figure 1 shows the schematic representation of a tactile scarf te rs he r komm I i rather kind in cross-section.

Figur 2a die schematische Darstellung eines Tastschalte rs gemäß der Erfindung im Querschnitt.Figure 2a shows the schematic representation of a tactile switch rs according to the invention in cross section.

Figur 2b und 2c den Tastschalter der Figur 2a in unterschiedlichen Betätigungsphasen.Figure 2b and 2c the push button switch of Figure 2a in different phases of operation.

Figur 3 das Weg-Kraft-Diagramm des Tastscha Iters Figur 2a bis 2c.FIG. 3 shows the displacement-force diagram of the tactile sensor Figures 2a to 2c.

Figur 1 z.eigt einen handelsüblichen Tastschalter im Querschnitt. Ein glockenförmiges Federelement 1 liegt mit seinem äußeren Rand 2 auf einer flexiblen Leiterplatte 4 auf, die plan auf einer biegesteifen Unterlage 6 ruht. Die Leiterplatte 4 ist mit Leiterbahnen 5 versehen.Figure 1 shows a standard push button switch in cross section. A bell-shaped spring element 1 lies with his outer edge 2 on a flexible printed circuit board 4, which rests flat on a rigid base 6. The circuit board 4 is provided with conductor tracks 5.

- 4 R. Deeg-23- 4 R. Deeg-23

Das Federe Lement 1 hat im Zenit der Kuppel, eine KontaktpiLle 3 aus elektrisch Leitfähigem. Material, vorzugsweise Silikonkautschuk. Auf dem g Lockenf örmi gen Fede re le:ment sitzt Lose ein TastenstößeL 7 auf, der in einer FührungspLatte 8 vertikal verschiebbar gelagert ist.The spring element 1 has a contact pin in the zenith of the dome 3 made of electrically conductive material. Material, preferably Silicone rubber. On the curly spring reel: ment sits loosely on a button push L 7, which is in a guide plate 8 is mounted vertically displaceable.

Bei dieser Ausführung erfolgt die Kontaktgabe zwischen der KontaktpilLe 3 und den Leiterbahnen 5 erst am Ende des Schalthubes S1. Dieses kann zu so kurzen Kontaktzeiten führen, daß keine sichere Auswertung gewährleistet ist.In this design, the contact is made between the KontaktpilLe 3 and the conductor tracks 5 only at the end of the Switching stroke S1. This can lead to such short contact times that no reliable evaluation can be guaranteed.

Die Figuren 2a bis 2c zeigen einen Tastscha lter^-der das gleiche Federelement 1 verwendet, wie es zu Figur 1 beschrieben wurde. Der Unterschied besteht in der Ausbildung der flexiblen Leiterplatte 4. Diese ist im Innenbereich des glockenförmigen Federelements 1 tellerförmig gewölbt. In der Mitte der Wölbung 4a sind auf der Oberseite die Leiterbahnen 5 aufgebracht. Durch die Wölbung 4a ist der Schalthub S1 in einen Kontakthub S2 und einen Nachlaufhub S3 unterteiIt.Figures 2a to 2c show a tactile switch ^ -der that the same spring element 1 is used as was described for FIG. The difference is in the training of the flexible printed circuit board 4. This is arched in the shape of a plate in the inner area of the bell-shaped spring element 1. In the middle of the bulge 4a, the conductor tracks 5 are applied on the top. The bulge 4a is the Switching stroke S1 is divided into a contact stroke S2 and an overrun stroke S3.

Wie das Weg-Kraft-Diagramm der Figur 3 zeigt, endet der Kontakthub S2 jenseits des Kulminationspunktes f., an dem der negative Kraftsprung erfolgt, d.h., vom Punkt f. ab wird durch das Einknicken der Federelementkuppe I der über den Tastenknopf 7 spürbare Widerstand plötzlich geringer. Unmittelbar nach diesem als Rückmeldung der Betätigung empfundenen negativen Kraftsprung berührt die Kontaktpille 3 die Leiterbahnen 5 auf der tellerförmigen Wölbung 4a. Diesen Zeitpunkt zeigt Figur 2b. Während' des Nachlaufhubes S3 bis zur Anschlag lage, in der die Mitte der tellerförmigen Wölbung 4a gemäß Figur 2c auf der Unterlage 6 aufliegt, ist bei zunehmendem Druck die Kontaktgabe zwi-As the path-force diagram in FIG. 3 shows, the ends Contact stroke S2 beyond the culmination point f., At which the negative force jump occurs, i.e. from point f. onwards, the buckling of the spring element tip I causes the over the key button 7 suddenly decreases noticeably. Immediately after this as confirmation of the actuation perceived negative force jump, the contact pill 3 touches the conductor tracks 5 on the plate-shaped bulge 4a. This point in time is shown in FIG. 2b. During 'the follow-up stroke S3 up to the stop, in which the center of the plate-shaped Curvature 4a in accordance with Figure 2c rests on the base 6, with increasing pressure the contact between

R. Deeg-23
sehen der KontaktpiLLe 3 und den Leiterbahnen 5 gesichert.R. Deeg-23
see the KontaktpiLLe 3 and the conductor tracks 5 secured.

Die Zunahme des Kontaktdruckes ergibt sich gemäß Figur 3 aus der während des Nachlaufhubes S3 auf Druck beahspruchten tellerförmigen Wölbunge 4a. Die der Tastenknopf 7 entgegen wirkende Kraft hat den strich-punktierten Verlauf und am Ende des Schalthubes S1 die Größe f.. Sie überlagert sich mit der durch das Einknicken der Kuppel abnehmenden Federkraft des Federelements 1, die dem strichlinierten Verlauf folgt und am Ende des Schalthubes S1 nur noch die Größe f» hat. Durch, die überlagerung der beiden Kraftkomponenten f. und f„ ergibt sich im Bereich des Nach laufhubes S3 der ausgezogene Kurvenverlauf'mit einer Rückstellkraft fR am Ende des Schalthubes S1. Diese ist erheblich größer als notwendig, dam.it das deformierte Federelement T gemäß Figur 2c bei nachlassendem. Druck auf den Tastenknopf 7 selbsttätig wieder in die Ausgangslage gemäß Figur 2a zurückkehrt. Es besteht som.it die Möglichkeit die Federcharakteristik des Federelements 1 so zu verändern, daß die resultierende Rückstellkraft die Größe fg hat. Dadurch wird die Kennlinie des Kraftverlaufs etwas steiler, was sich durch eine Verstärkung der Betätigungsrückmeldung vorteilhaft bemerkbar macht.According to FIG. 3, the increase in the contact pressure results from the plate-shaped bulge 4a which is subjected to pressure during the overrun stroke S3. The force counteracting the key button 7 has the dash-dotted curve and at the end of the switching stroke S1 the size f .. It is superimposed with the spring force of the spring element 1, which decreases due to the buckling of the dome and which follows the dashed curve and at the end of the switching stroke S1 only has the size f ». The superposition of the two force components f 1 and f 1 results in the solid curve shape in the area of the after-travel stroke S3 with a restoring force f R at the end of the switching stroke S1. This is considerably greater than necessary, so that the deformed spring element T according to FIG. Pressing the button 7 automatically returns to the starting position according to FIG. 2a. There is som.it the possibility of changing the spring characteristics of the spring element 1 so that the resulting restoring force has the size fg. As a result, the characteristic curve of the force curve becomes somewhat steeper, which is advantageously noticeable by increasing the actuation feedback.

Der Tastschalter kann auch ohne den Ta stenstössel 7 vei— wendet werden. Die Oberseite des glockenförmigen Federelementes 1 wird in diesem Fall zweckmäßigerweise abgerundet. The pushbutton switch can also be displayed without the pushbutton plunger 7. be turned. The top of the bell-shaped spring element 1 is expediently rounded off in this case.

3 Blatt Zeichnungen3 sheets of drawings

— 6 —- 6 -

- Leerseite -- blank page -

Claims (1)

STANDARD ELEKTRIK LORENZ
AKTIENGESELLSCHAFT
StuttgartSTANDARD ELECTRICS LORENZ
STOCK COMPANY
Stuttgart R. Deeg - 23R. Deeg - 23 PatentansprücheClaims Ta st se ha Lter bestehend aus einem gummielastrschen, gLockenförmigen Federe Lement mit oder ohne Ta st enstössel, das elektrisch Leitend ist, oder innen eine fest angeordnete KontaktpilLe hat, und das mit seinem äußeren Rand auf einer fLexiblen Leiterplatte aufliegt, die ihrerseits auf einer biegesteifen Unterlage aufliegt, und bei dem das Federelement oder die KontaktpilLe Kontakt zwischen Leiterbahnen der Leiterplatte herstellt, d a d u r c h g e k e η η ζ ei c h η e t, daß die flexible Leite ι— platte (4) im Bereich des glockenförmigen Federelements (1) gewölbt (4a) ist.The bag consists of a rubber elastic strap, Bell-shaped spring element with or without button plunger, that is electrically conductive, or has a fixed contact pin inside, and that with its outer edge a flexible printed circuit board, which in turn rests on a rigid base, and in which the The spring element or the contact pile makes contact between the conductor tracks of the circuit board, which means that g e k e η η ζ ei c h η e t that the flexible line ι— plate (4) in the area of the bell-shaped spring element (1) is arched (4a). 2. Tastschalter nach Anspruch 1, bei dem das glockenförmige Federelement einen Druckpunkt hat, dadurch gekennzeichnet, daß die WöLbung (4a) der flexibLen Leiterplatte (4) so hoch ist, daß die Kontaktpille (3) und die Leitei— bahnen (5) im Bereich der WöLbung (4a) sich erst nach dem überschreiten des Druckpunktes des gLockenförmigen Federelements (1) berühren.2. Push button switch according to claim 1, wherein the bell-shaped The spring element has a pressure point, characterized in that the curvature (4a) of the flexible printed circuit board (4) is so high that the contact pill (3) and the Leitei— Paths (5) in the area of the curvature (4a) only emerge after the pressure point of the bell-shaped spring element has been exceeded Touch (1). ZT/P1-vHy/VZT / P1-vHy / V 15.02.1983 - 2 -Feb 15, 1983 - 2 -
DE3307659A 1983-03-04 1983-03-04 Push button switch Expired DE3307659C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE3307659A DE3307659C2 (en) 1983-03-04 1983-03-04 Push button switch
GB08410751A GB2158290A (en) 1983-03-04 1984-04-26 Pushbutton switch
FR8406848A FR2563940B1 (en) 1983-03-04 1984-05-03 PUSH BUTTON SWITCH

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3307659A DE3307659C2 (en) 1983-03-04 1983-03-04 Push button switch
GB08410751A GB2158290A (en) 1983-03-04 1984-04-26 Pushbutton switch
FR8406848A FR2563940B1 (en) 1983-03-04 1984-05-03 PUSH BUTTON SWITCH

Publications (2)

Publication Number Publication Date
DE3307659A1 true DE3307659A1 (en) 1984-09-06
DE3307659C2 DE3307659C2 (en) 1986-10-30

Family

ID=27190819

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3307659A Expired DE3307659C2 (en) 1983-03-04 1983-03-04 Push button switch

Country Status (3)

Country Link
DE (1) DE3307659C2 (en)
FR (1) FR2563940B1 (en)
GB (1) GB2158290A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447085A1 (en) * 1984-12-22 1986-07-03 Marquardt Gmbh, 7201 Rietheim-Weilheim Push-button switch
FR2584528A1 (en) * 1985-07-03 1987-01-09 Dav ELECTRIC PUSH-BUTTON SWITCH WITH FLASHING RECOVERY MEMBRANE
DE4029231A1 (en) * 1990-09-14 1992-03-19 Vedder Gmbh Geb Electrical switch unit e.g. pushbutton, dimmer - has elastomer contact module deformed by operation of actuator pad to engage contact points
EP0509368A2 (en) * 1991-04-19 1992-10-21 Marquardt GmbH Push button switch
DE102014219316A1 (en) * 2014-09-24 2016-03-24 Volkswagen Aktiengesellschaft Switch control and switch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3627554A1 (en) * 1986-08-14 1988-02-25 Schoeller & Co Elektrotech METHOD FOR PRODUCING A KEY SWITCHING DEVICE AND KEY SWITCHING DEVICE
GB2326978A (en) * 1997-07-01 1999-01-06 Autoliv Dev A switch
JP2000236378A (en) * 1999-02-16 2000-08-29 Matsushita Electric Ind Co Ltd Portable telephone set
GB2396253A (en) * 2002-12-13 2004-06-16 Itt Mfg Enterprises Inc Sealed switch

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903898A1 (en) * 1978-02-03 1979-08-09 Canon Kk Flat electronic calculator with operating keyboard - has pushbutton switches with operational stroke greater than keyboard insulating plate
DE3025024A1 (en) * 1980-07-02 1982-01-21 Schoeller & Co Elektrotech FILM SWITCH
DE3032557A1 (en) * 1980-08-29 1982-03-18 Standard Elektrik Lorenz Ag, 7000 Stuttgart RUBBER ELASTIC CONTACT ELEMENT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194097A (en) * 1978-06-12 1980-03-18 Ncr Corporation Membrane keyboard apparatus with tactile feedback
DE2902769C2 (en) * 1979-01-25 1982-12-09 Rudolf Schadow Gmbh, 1000 Berlin Push button switch
FR2530068A1 (en) * 1982-07-06 1984-01-13 Jaeger TOUCH SENSATION MULTIPLE ELECTRICAL CONTACTOR AND SINGLE ACTUATION
GB2133625A (en) * 1982-12-15 1984-07-25 Spiralux Ltd Electrical switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2903898A1 (en) * 1978-02-03 1979-08-09 Canon Kk Flat electronic calculator with operating keyboard - has pushbutton switches with operational stroke greater than keyboard insulating plate
DE3025024A1 (en) * 1980-07-02 1982-01-21 Schoeller & Co Elektrotech FILM SWITCH
DE3032557A1 (en) * 1980-08-29 1982-03-18 Standard Elektrik Lorenz Ag, 7000 Stuttgart RUBBER ELASTIC CONTACT ELEMENT

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3447085A1 (en) * 1984-12-22 1986-07-03 Marquardt Gmbh, 7201 Rietheim-Weilheim Push-button switch
FR2584528A1 (en) * 1985-07-03 1987-01-09 Dav ELECTRIC PUSH-BUTTON SWITCH WITH FLASHING RECOVERY MEMBRANE
EP0210097A1 (en) * 1985-07-03 1987-01-28 Jaeger Electrical push button switch with a buckling return membrane
DE4029231A1 (en) * 1990-09-14 1992-03-19 Vedder Gmbh Geb Electrical switch unit e.g. pushbutton, dimmer - has elastomer contact module deformed by operation of actuator pad to engage contact points
EP0509368A2 (en) * 1991-04-19 1992-10-21 Marquardt GmbH Push button switch
DE4112754A1 (en) * 1991-04-19 1992-10-22 Marquardt Gmbh PUSH BUTTON SWITCH
EP0509368A3 (en) * 1991-04-19 1992-12-30 Marquardt Gmbh Push button switch
US5298705A (en) * 1991-04-19 1994-03-29 Marquardt Gmbh Snap disk type switch
DE4112754C2 (en) * 1991-04-19 1999-06-02 Marquardt Gmbh Push button switch
DE102014219316A1 (en) * 2014-09-24 2016-03-24 Volkswagen Aktiengesellschaft Switch control and switch

Also Published As

Publication number Publication date
GB8410751D0 (en) 1984-05-31
GB2158290A (en) 1985-11-06
FR2563940B1 (en) 1988-01-29
DE3307659C2 (en) 1986-10-30
FR2563940A1 (en) 1985-11-08

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ALCATEL SEL AKTIENGESELLSCHAFT, 7000 STUTTGART, DE

8339 Ceased/non-payment of the annual fee