EP0353186A1 - Push button switch - Google Patents

Push button switch Download PDF

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Publication number
EP0353186A1
EP0353186A1 EP89810538A EP89810538A EP0353186A1 EP 0353186 A1 EP0353186 A1 EP 0353186A1 EP 89810538 A EP89810538 A EP 89810538A EP 89810538 A EP89810538 A EP 89810538A EP 0353186 A1 EP0353186 A1 EP 0353186A1
Authority
EP
European Patent Office
Prior art keywords
push button
push
switch
button
flexible
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
EP89810538A
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German (de)
French (fr)
Other versions
EP0353186B1 (en
Inventor
François Barbin
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.)
Somfy SA
Original Assignee
Somfy SA
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 Somfy SA filed Critical Somfy SA
Publication of EP0353186A1 publication Critical patent/EP0353186A1/en
Application granted granted Critical
Publication of EP0353186B1 publication Critical patent/EP0353186B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/62Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon manual release of a latch
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02Details
    • H01H21/18Movable parts; Contacts mounted thereon
    • H01H21/22Operating parts, e.g. handle

Definitions

  • the subject of the invention is a push-button switch comprising a frame the front face of which has a rectangular cutout in which is mounted a rectangular push-button acting directly or indirectly on at least one pair of contacts, this push-button being provided , on at least part of its periphery, of a heel by which it is retained in the frame, against the action of an elastic means, so that the push-button can be moved parallel to the plane of the cutout to be fixed, by a notch, in an actuated position.
  • a switch of this type is known, marketed under the brand "dh", in which the push button acts on a metal part in the form of a rocker, one end of which acts directly on two contacts and the other end of which is subjected to the action of a spring which simultaneously has the effect of returning the push button to the non-actuated position.
  • the notch of the push button is constituted by a bearing which engages under one of the edges of the cutout of the frame when the button is pressed obliquely.
  • Such a switch has the advantage of being able to function either as a switch with a single stable position or as a switch with two stable positions.
  • the object of the present invention is to obtain the return of the push-button to its rest position, not actuated, by a simple pressure on the push-button, and this with a minimum of parts.
  • the switch according to the invention is characterized in that the push button has come in one piece with a fixing tab to which one of the sides of the push button is connected by at least one flexible and elastically extensible part, the opposite side of the push button being provided with a hooking profile formed on the obverse of the push button and intended to come to hang under the corresponding edge of the cutout when the push button is pressed obliquely in the direction of its attachment profile.
  • the flexible part connecting the push button to its fixing lug preferably consists of a fold of thinned material which simultaneously ensures the articulation of the push button and its withdrawal in the rest position when the push button is released by a one touch.
  • the push-button can either activate a switch or directly short-circuit two contact terminals by means of a metal plate fixed to the end of a flexible arm joined in one piece with the push-button.
  • the switch shown in Figures 1 and 2 comprises a support plate 1 on which is fixed a switch 2 actuatable by pressure on a pad 3.
  • a switch is well known in itself. It can be bipolar or multipolar.
  • On the support plate 1 is fixed a rectangular cover 4 having a rectangular cutout 5, better visible in Figure 3.
  • a rectangular push button 6 provided with a skirt 7 ending in a peripheral heel 8 by which the push button 6 is retained against the internal face of the cover 4.
  • the push button 6 is fixed on a stud 9 provided on the internal face of the cover 4 by a fixing lug 10 to which the push button is connected by a ply of thinned material 11 giving the link flexibility allowing the push button 6 to switch in the direction of the switch 2 and further having elasticity in a direction parallel to the face of the cover 4.
  • the push button 6 is also provided with a flexible oblique arm 12 resting on the pad 3 of the switch 2.
  • the side of the push button 6 opposite its point of attachment to the cover has a hooking profile formed by a rib of done ble height 13 along the edge of the push button.
  • the face of the push button 6 also has a second rib 14 higher than the rib 13.
  • the two ribs 13 and 14 define between them a notch 15.
  • the corresponding edge of the cutout 5 has a bead 16 directed towards the inside and intended to cooperate with the notch 15.
  • the push button, with its arm and its fixing lug 10 can be easily made of synthetic material, by injection.
  • the push button 6 switches around its articulation 11 and the arm 12, having sufficient rigidity for this purpose, actuates the switch 2, bending slightly when 'The pressure on the push button 6 is released, it is returned to its initial position, shown in FIG. 2, by the elasticity of the switch and that of the arm 12.
  • connection profile could be produced in a different way, for example by serrated or rough surfaces.
  • the connection 11 could have several folds or undulations. It could also be carried out without creases or undulations using a material having a certain elasticity in traction in its thinned part.
  • the link 11 could be subdivided into several bands.
  • the flexible arm 12 could be provided with a metal part to directly ensure a short circuit between two terminals. The switch could of course work in circuit breaker.
  • the push button 6 could have several actuating arms 12.
  • this arm 12 of the push button actuates a switch
  • this arm could be rigid, or even eliminated, the elasticity being ensured by the switch itself.

Landscapes

  • Push-Button Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

Push button switch comprising a case (1, 4) the front face of which has a rectangular cut-out in which is mounted a push button (6) acting directly or indirectly on a pair of contacts. The push button (6) is fixed to the case by a tab (10) to which it is connected by a flexible and elastically extensible part (11), in such a way that the push button can be obliquely depressed and become fastened in the depressed position by a catch (15) under the rim (16) of the cut-out. A straightforward pressing on the push button brings the latter back to its initial position by virtue of the elasticity of the connection (11). <IMAGE>

Description

L'invention a pour objet un interrupteur à bouton-pous­soir comprenant un bâti dont la face frontale présente une découpe rectangulaire dans laquelle est monté un bouton-poussoir rectangulaire agissant directement ou indirectement sur au moins une paire de contacts, ce bouton-poussoir étant muni, sur une partie au moins de son pourtour, d'un talon par lequel il est retenu dans le bâti, contre l'action d'un moyen élastique, de telle sorte que le bouton-poussoir peut être déplacé parallèlement au plan de la découpe pour être fixé, par un cran, dans une position actionnée.The subject of the invention is a push-button switch comprising a frame the front face of which has a rectangular cutout in which is mounted a rectangular push-button acting directly or indirectly on at least one pair of contacts, this push-button being provided , on at least part of its periphery, of a heel by which it is retained in the frame, against the action of an elastic means, so that the push-button can be moved parallel to the plane of the cutout to be fixed, by a notch, in an actuated position.

On connaît un interrupteur de ce type, commercialisé sous la marque "dh", dans lequel le bouton-poussoir agit sur une pièce métallique en forme de bascule dont l'une des extrémités agit directement sur deux contacts et dont l'autre extrémité est soumise à l'action d'un ressort qui a simultanément pour effet de ramener le bouton-poussoir en position non actionnée. Le cran du bouton-poussoir est constitué par une portée qui vient s'engager sous l'un des bords de la découpe du bâti lorsqu'on presse obliquement sur le bouton-poussoir. Un tel interrupteur a l'avantage de pouvoir fonctionner, soit comme un interrupteur à une seule position stable, soit comme un interrupteur à deux positions stables. Lorsque le bouton-poussoir est fixé en position action­née par son cran, il est nécessaire, pour le libérer, de le tirer dans la direction opposée à son cran.A switch of this type is known, marketed under the brand "dh", in which the push button acts on a metal part in the form of a rocker, one end of which acts directly on two contacts and the other end of which is subjected to the action of a spring which simultaneously has the effect of returning the push button to the non-actuated position. The notch of the push button is constituted by a bearing which engages under one of the edges of the cutout of the frame when the button is pressed obliquely. Such a switch has the advantage of being able to function either as a switch with a single stable position or as a switch with two stable positions. When the push button is fixed in the position actuated by its notch, it is necessary, to release it, to pull it in the direction opposite to its notch.

La présente invention a pour but d'obtenir le retour du bouton-poussoir dans sa position de repos, non action­née, par une simple pression sur le bouton-poussoir, et ceci avec un minimum de pièces.The object of the present invention is to obtain the return of the push-button to its rest position, not actuated, by a simple pressure on the push-button, and this with a minimum of parts.

L'interrupteur selon l'invention est caractérisé en ce que le bouton-poussoir est venu d'une pièce avec une patte de fixation à laquelle l'un des côtés du bouton-­poussoir est relié par au moins une partie souple et élastiquement extensible, le côté opposé du bouton-­poussoir étant pourvu d'un profil d'accrochage formé sur l'avers du bouton-poussoir et destiné à venir s'ac­crocher sous le bord correspondant de la découpe lors­que le bouton-poussoir est enfoncé obliquement en direction de son profil d'accrochage.The switch according to the invention is characterized in that the push button has come in one piece with a fixing tab to which one of the sides of the push button is connected by at least one flexible and elastically extensible part, the opposite side of the push button being provided with a hooking profile formed on the obverse of the push button and intended to come to hang under the corresponding edge of the cutout when the push button is pressed obliquely in the direction of its attachment profile.

La partie souple reliant le bouton-poussoir à sa patte de fixation est de préférence constituée d'un pli de matière amincie qui assure simultanément l'articulation du bouton-poussoir et son retrait en position de repos lorsque le bouton-poussoir est décroché par une simple pression.The flexible part connecting the push button to its fixing lug preferably consists of a fold of thinned material which simultaneously ensures the articulation of the push button and its withdrawal in the rest position when the push button is released by a one touch.

Le bouton-poussoir peut, soit actionner un interrup­teur, soit court-circuiter directement deux bornes de contact au moyen d'une plaquette métallique fixée à l'extrémité d'un bras flexible venu d'une pièce avec le bouton-poussoir.The push-button can either activate a switch or directly short-circuit two contact terminals by means of a metal plate fixed to the end of a flexible arm joined in one piece with the push-button.

Une forme d'exécution est représentée, à titre d'exem­ple, dans le dessin annexé.

  • La figure 1 est une vue en plan de l'interrupteur.
  • La figure 2 est une vue en coupe selon II-II de la figure 1 en position non activée de l'interrupteur.
  • La figure 3 est une vue analogue à celle de la figure 2 représentant l'interrupteur activé et le bouton-pous­ soir verrouillé dans cette position.
An embodiment is shown, by way of example, in the accompanying drawing.
  • Figure 1 is a plan view of the switch.
  • Figure 2 is a sectional view along II-II of Figure 1 in the non-activated position of the switch.
  • Figure 3 is a view similar to that of Figure 2 showing the activated switch and the push button evening locked in this position.

L'interrupteur représenté aux figures 1 et 2 comprend une plaque-support 1 sur laquelle est fixé un interrup­teur 2 actionnable par pression sur un plot 3. Un tel interrupteur est bien connu en soi. Il peut être bipo­laire ou multipolaire. Sur la plaque-support 1 est fixé un capot rectangulaire 4 présentant une découpe rectan­gulaire 5, mieux visible à la figure 3. Dans cette dé­coupe 5 est disposé un bouton-poussoir rectangulaire 6 muni d'une jupe 7 se terminant par un talon périphéri­que 8 par lequel le bouton-poussoir 6 est retenu contre la face interne du capot 4. Le bouton-poussoir 6 est fixé sur un téton 9 prévu sur la face interne du capot 4 par une patte de fixation 10 à laquelle le bouton-­poussoir est relié par un pli de matière amincie 11 donnant à la liaison une flexibilité permettant au bouton-poussoir 6 de basculer en direction de l'inter­rupteur 2 et présentant en outre une élasticité dans une direction parallèle à la face du capot 4. Le bouton-poussoir 6 est en outre muni d'un bras oblique flexible 12 s'appuyant sur le plot 3 de l'interrupteur 2. Le côté du bouton-poussoir 6 opposé à son point de fixation au capot présente un profil d'accrochage formé par une nervure de faible hauteur 13 le long du bord du bouton-poussoir. La face du bouton-poussoir 6 présente en outre une seconde nervure 14 plus haute que la ner­vure 13. Les deux nervures 13 et 14 définissent entre-­elles un cran 15. Le bord correspondant de la découpe 5 présente un bourrelet 16 dirigé vers l'intérieur et destiné à coopérer avec le cran 15. Le bouton-poussoir, avec son bras et sa patte de fixation 10 peut être aisément réalisé en matière synthétique, par injection.The switch shown in Figures 1 and 2 comprises a support plate 1 on which is fixed a switch 2 actuatable by pressure on a pad 3. Such a switch is well known in itself. It can be bipolar or multipolar. On the support plate 1 is fixed a rectangular cover 4 having a rectangular cutout 5, better visible in Figure 3. In this cutout 5 is arranged a rectangular push button 6 provided with a skirt 7 ending in a peripheral heel 8 by which the push button 6 is retained against the internal face of the cover 4. The push button 6 is fixed on a stud 9 provided on the internal face of the cover 4 by a fixing lug 10 to which the push button is connected by a ply of thinned material 11 giving the link flexibility allowing the push button 6 to switch in the direction of the switch 2 and further having elasticity in a direction parallel to the face of the cover 4. The push button 6 is also provided with a flexible oblique arm 12 resting on the pad 3 of the switch 2. The side of the push button 6 opposite its point of attachment to the cover has a hooking profile formed by a rib of done ble height 13 along the edge of the push button. The face of the push button 6 also has a second rib 14 higher than the rib 13. The two ribs 13 and 14 define between them a notch 15. The corresponding edge of the cutout 5 has a bead 16 directed towards the inside and intended to cooperate with the notch 15. The push button, with its arm and its fixing lug 10 can be easily made of synthetic material, by injection.

Si on appuie sur le bouton-poussoir 6 perpendiculaire­ ment, selon la direction de la flèche F1 ou approxima­tivement selon cette direction, le bouton-poussoir 6 bascule autour de son articulation 11 et le bras 12, présentant une rigidité suffisante à cet effet, vient actionner l'interrupteur 2, en fléchissant légèrement lorsqu'on relâche la pression sur le bouton-poussoir 6, celui-ci est ramené dans sa position initiale, repré­sentée à la figure 2, par l'élasticité de l'interrup­teur et celle du bras 12.If you press the perpendicular push button 6 ment, in the direction of arrow F1 or approximately in this direction, the push button 6 switches around its articulation 11 and the arm 12, having sufficient rigidity for this purpose, actuates the switch 2, bending slightly when 'The pressure on the push button 6 is released, it is returned to its initial position, shown in FIG. 2, by the elasticity of the switch and that of the arm 12.

Si par contre on exerce une pression sur le bouton-­poussoir en poussant simultanément la nervure 14 en direction du bord correspondant de la découpe 5, ce qui peut se traduire par une force résultante oblique F2 (figure 3), la nervure 13 passe derrière le bourrelet 16 du capot et vient s'accrocher sur ce bourrelet lors­qu'on relâche le bouton-poussoir. La nervure 14 a éga­lement pour effet de limiter le déplacement transversal du bouton-poussoir en venant buter contre le bord de la découpe 5. Cette position est représentée à la figure 3. L'interrupteur 2 est maintenu en position actionnée et l'ensemble fonctionne comme un interrupteur à deux positions stables. Pour libérer le bouton-poussoir 6, il suffit d'exercer une pression approximativement per­pendiculaire sur celui-ci, le bouton-poussoir étant ra­mené en face de la découpe 5 grâce à l'élasticité de la liaison 11 qui agit comme un ressort de rappel.If, on the other hand, pressure is exerted on the push-button by simultaneously pushing the rib 14 in the direction of the corresponding edge of the cutout 5, which may result in a resultant oblique force F2 (FIG. 3), the rib 13 passes behind the bead 16 of the cover and hooks onto this bead when the push button is released. The rib 14 also has the effect of limiting the transverse movement of the push button by abutting against the edge of the cutout 5. This position is shown in FIG. 3. The switch 2 is held in the actuated position and the assembly operates like a switch with two stable positions. To release the push-button 6, it suffices to exert an approximately perpendicular pressure thereon, the push-button being brought back in front of the cutout 5 thanks to the elasticity of the link 11 which acts as a return spring .

De nombreuses variantes sont possibles sans sortir du cadre de l'invention. En particulier, le profil d'ac­crochage pourrait être réalisé de façon différente, par exemple par des surfaces dentelées ou rugueuses. La liaison 11 pourrait présenter plusieurs plis ou ondula­tions. Elle pourrait également être réalisée sans pli ni ondulation en utilisant un matériau présentant une certaine élasticité à la traction dans sa partie amin­cie. La liaison 11 pourait être subdivisée en plusieurs bandes. Au lieu d'actionner un interrupteur, comme re­présenté, le bras flexible 12 pourrait être muni d'une partie métallique pour assurer directement un court-­circuit entre deux bornes. L'interrupteur pourrait bien entendu travailler en coupe-circuit. Le bouton-poussoir 6 pourrait présenter plusieurs bras d'actionnement 12.Many variations are possible without departing from the scope of the invention. In particular, the attachment profile could be produced in a different way, for example by serrated or rough surfaces. The connection 11 could have several folds or undulations. It could also be carried out without creases or undulations using a material having a certain elasticity in traction in its thinned part. The link 11 could be subdivided into several bands. Instead of actuating a switch, as shown, the flexible arm 12 could be provided with a metal part to directly ensure a short circuit between two terminals. The switch could of course work in circuit breaker. The push button 6 could have several actuating arms 12.

Dans le cas, représenté, où le bras 12 du bouton-pous­soir actionne un interrupteur, ce bras pourrait être rigide, voire supprimé, l'élasticité étant assurée par l'interrupteur lui-même.In the case shown, where the arm 12 of the push button actuates a switch, this arm could be rigid, or even eliminated, the elasticity being ensured by the switch itself.

Claims (4)

1. Interrupteur à bouton-poussoir comprenant un bâti (1, 4) dont la face frontale présente une découpe rec­tangulaire (5) dans laquelle est monté un bouton-pous­soir rectangulaire (6) agissant directement ou indirec­tement sur au moins une paire de contacts, ce bouton-­poussoir étant muni, sur une partie au moins de son pourtour, d'un talon (8) par lequel il est retenu dans le bâti, contre l'action d'un moyen élastique, de telle sorte que le bouton-poussoir peut être déplacé parallè­lement au plan de la découpe pour être fixé, par un cran (15), dans une position actionnée, caractérisé en ce que le bouton-poussoir est venu d'une pièce avec une patte de fixation (10) à laquelle l'un des côtés de l'interrupteur est relié par au moins une partie souple et élastiquement extensible (11), le côté opposé du bouton-poussoir étant pourvu d'un profil d'accrochage (13, 15), formé sur l'avers du bouton-poussoir, destiné à venir s'accrocher sous le bord correspondant (16) de la découpe lorsque le bouton-poussoir est enfoncé obli­quement en direction de son profil d'accrochage.1. Push-button switch comprising a frame (1, 4), the front face of which has a rectangular cutout (5) in which is mounted a rectangular push-button (6) acting directly or indirectly on at least one pair of contacts, this push button being provided, on at least part of its periphery, with a heel (8) by which it is retained in the frame, against the action of an elastic means, so that the push button can be moved parallel to the plane of the cutout to be fixed, by a notch (15), in an actuated position, characterized in that the push-button came in one piece with a fixing lug (10) to which the one of the sides of the switch is connected by at least one flexible and elastically extensible part (11), the opposite side of the push button being provided with a hooking profile (13, 15), formed on the obverse of the push button, intended to be hooked under the edge corresponds ant (16) of the cut when the push button is pressed obliquely in the direction of its hooking profile. 2. Interrupteur selon la revendication 1, caractérisé en ce que la partie souple reliant le bouton-poussoir à sa patte de fixation est constitué d'un pli de matière amincie (11).2. Switch according to claim 1, characterized in that the flexible part connecting the push button to its fixing lug consists of a ply of thinned material (11). 3. Interrupteur selon la revendication 1 ou 2, carac­térisé en ce que le bouton-poussoir est muni d'au moins un bras oblique flexible (12) pour l'actionnement de l'interrupteur.3. Switch according to claim 1 or 2, characterized in that the push button is provided with at least one flexible oblique arm (12) for actuating the switch. 4. Interrupteur selon la revendication 3, caractérisé en ce que ledit bras flexible (12) assure directement le court-circuit entre deux bornes.4. Switch according to claim 3, characterized in that said flexible arm (12) directly ensures the short circuit between two terminals.
EP19890810538 1988-07-29 1989-07-14 Push button switch Expired - Lifetime EP0353186B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8810284A FR2634941B1 (en) 1988-07-29 1988-07-29 PUSH BUTTON SWITCH
FR8810284 1988-07-29

Publications (2)

Publication Number Publication Date
EP0353186A1 true EP0353186A1 (en) 1990-01-31
EP0353186B1 EP0353186B1 (en) 1993-12-01

Family

ID=9368942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890810538 Expired - Lifetime EP0353186B1 (en) 1988-07-29 1989-07-14 Push button switch

Country Status (4)

Country Link
EP (1) EP0353186B1 (en)
DE (1) DE68911051T2 (en)
ES (1) ES2048321T3 (en)
FR (1) FR2634941B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110148539A (en) * 2019-06-13 2019-08-20 珠海格力电器股份有限公司 Button assembly and electronic device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149208A (en) * 1961-05-16 1964-09-15 American Radiator & Standard Pushbutton switch construction
DE1225262B (en) * 1960-11-07 1966-09-22 Berker Geb Electric push button with a pivoting actuation button
US3886341A (en) * 1973-05-02 1975-05-27 Bowman Ali Inc Switch operating device for use with an over center diaphragm switch contact assembly with contact ramp camming surface
US4055734A (en) * 1973-12-26 1977-10-25 Thomas John Hayden Keyboard switch assembly with hinged pushbuttons and cantilevered terminal members
US4536622A (en) * 1982-09-29 1985-08-20 At&T Technologies, Inc. Remote telephone on-hook, off-hook control and indication circuit
US4689455A (en) * 1985-01-25 1987-08-25 Matsushita Electric Industry Co., Ltd. Snap fitted push-button switch actuator assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1225262B (en) * 1960-11-07 1966-09-22 Berker Geb Electric push button with a pivoting actuation button
US3149208A (en) * 1961-05-16 1964-09-15 American Radiator & Standard Pushbutton switch construction
US3886341A (en) * 1973-05-02 1975-05-27 Bowman Ali Inc Switch operating device for use with an over center diaphragm switch contact assembly with contact ramp camming surface
US4055734A (en) * 1973-12-26 1977-10-25 Thomas John Hayden Keyboard switch assembly with hinged pushbuttons and cantilevered terminal members
US4536622A (en) * 1982-09-29 1985-08-20 At&T Technologies, Inc. Remote telephone on-hook, off-hook control and indication circuit
US4689455A (en) * 1985-01-25 1987-08-25 Matsushita Electric Industry Co., Ltd. Snap fitted push-button switch actuator assembly

Also Published As

Publication number Publication date
FR2634941B1 (en) 1993-09-24
ES2048321T3 (en) 1994-03-16
EP0353186B1 (en) 1993-12-01
FR2634941A1 (en) 1990-02-02
DE68911051T2 (en) 1994-07-07
DE68911051D1 (en) 1994-01-13

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