EP0221801A1 - Remotely controlled electrical switches - Google Patents
Remotely controlled electrical switches Download PDFInfo
- Publication number
- EP0221801A1 EP0221801A1 EP86402167A EP86402167A EP0221801A1 EP 0221801 A1 EP0221801 A1 EP 0221801A1 EP 86402167 A EP86402167 A EP 86402167A EP 86402167 A EP86402167 A EP 86402167A EP 0221801 A1 EP0221801 A1 EP 0221801A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- remote control
- control switch
- passage
- delay
- 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
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
- H01H47/10—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current by switching-in or -out impedance external to the relay winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
- H01H50/66—Driving arrangements between movable part of magnetic circuit and contact with lost motion
Definitions
- the present invention relates to an improvement to electrical remote control devices such as remote control switches, comprising motor coils intended to cause, if they are supplied with electric motor current by means of a control member, the movement of a movable armature causing the closing (or opening) of switches or contacts placed in the user circuit, the coil being powered by electrical pulses whose duration is sufficient to cause the tilting of a bistable mechanism causing the closing (or opening ) of these switches or contacts placed on the operating circuit.
- electrical remote control devices such as remote control switches, comprising motor coils intended to cause, if they are supplied with electric motor current by means of a control member, the movement of a movable armature causing the closing (or opening) of switches or contacts placed in the user circuit, the coil being powered by electrical pulses whose duration is sufficient to cause the tilting of a bistable mechanism causing the closing (or opening ) of these switches or contacts placed on the operating circuit.
- the coils are designed and dimensioned so as to support the permanent passage of the motive electric power necessary for actuation, although only one pulse, generally of short-term, sufficient to activate the mechanism of a remote control switch and, despite this, premature aging is often observed when the device is often used.
- the present invention proposes to remedy the drawbacks of the prior art and to provide an improvement to this type of apparatus, which eliminates the risk of premature aging and which simultaneously makes it possible to reduce the weight, the bulk and the cost price. of these devices.
- the subject of the invention is an improvement in remote control switches of the type comprising one or more coils, associated with external control means such as that, for example, a push switch, to cause the passage of an electric driving power in the coil (s), and a bistable mechanism actuated by the coil (s) and incorporating a movable element, such as a frame or a core plunger, capable of being displaced by the reel (s), under the effect of a brief supply pulse from the reel (s), to open or close the contact means of the device, characterized in that said element mobile is capable, during its movement towards the active position, of opening, with a determined delay, an auxiliary contact placed on the coil supply circuit, in parallel with a means of limiting electrical power, and in that the dimensioning of the coil (s) is reduced by being adapted to the passage of the brief power pulse which results therefrom.
- external control means such as that, for example, a push switch, to cause the passage of an electric driving power in the coil (s)
- the motor current when the motor current is applied to the coil and causes the movement of the movable element and its mechanism, the same movement causes, with an adequate delay, the opening of the auxiliary contact through which the motor current passed, so that the coil (s) are no longer supplied only by means of the only limiting means such as, for example, a resistance or a capacitance, which only authorizes the passage of a reduced power but nevertheless sufficient to maintain the armature in its position close to the coil (s) to avoid untimely actuation of the mechanism.
- the only limiting means such as, for example, a resistance or a capacitance
- the excitation pulse at full power of the coil is therefore limited to a very short duration, corresponding to this delay.
- the precipitated delay is adjusted so that the auxiliary contact does not open until the tipping point of the device has been exceeded. This delay can be obtained by a simple mechanical play interposed between the movable element and the auxiliary contact.
- the device shown is a remote control switch comprising a coil 1 wound around a fixed magnetic frame 2, for example in the shape of a U.
- a remote control switch comprising a coil 1 wound around a fixed magnetic frame 2, for example in the shape of a U.
- the motor current passes through the coil 1, it tends to tilt a mobile magnetic frame 3 around a pivot axis 4 from the inactive position shown in Figure 1 to the active position shown in Figure 3.
- the armature 3 actuates in its movement, a mechanism rod 5a which causes, during tilting in its active position , the closing (or if necessary the opening) of contact means 6, represented, for example, by two switches placed on a user electrical circuit.
- a spring 7 or another means, not shown, tends to cause the reverse movement of the armature 3 from the active position of FIG. 3, when the coil 1 is no longer supplied with current, towards the inactive position of FIG. 1.
- the supply circuit A1, A2 of the coil 1 has, for example on the conductor A1, an auxiliary contact 8 mechanically connected to the mechanism rod 5a and arranged so that when the device is in the non-active state as shown in FIG. 1, this contact 8 is closed.
- a current limiting element such as a resistor 9, is mounted in parallel at the terminals of the contact 8. This resistor could be replaced by another current limiting means such as, for example, a capacitor.
- the value of this means 9, for example the value of the resistance is such that, taking into account the supply voltage A1, A2, a current passing only through the resistance 9 is sufficient to maintain the armature 3 in its position active against the action of the return spring 7.
- connection between the armature 3 and the bistable mechanism 5 is effected by means of the mechanism rod 5a comprising an oblong passage 10 disposed on the rod 5a, the dimension of this oblong passage being such that in the first part of the closing stroke, from the initial position shown in FIG. 1, the mechanism rod 5a does not cause, in its movement, the auxiliary contact 8 which remains closed during this period. It is only when the end of the armature 3 has reached approximately the end of travel on the fixed armature 2 as shown in FIG. 2, that the movement of the mobile armature 3 will cause the opening of the auxiliary contact 8.
- the length of the oblong passage 9 and its arrangement are determined so that when the armature 3 will open the auxiliary contact 8, the mechanism 5 is already tilted beyond the position of non- return from which the tilting movement would continue, for example under the effect of simple inertia, to the position shown in Figure 3 even if, from this at the time, no current was anymore sent to the coil.
- the continued tilting of the armature 3 causes the opening of the auxiliary contact 8. From this moment, and assuming that the voltage pulse V is extended, the coil 1 is no longer supplied only via the resistor 9 and the voltage across the coil is, this time, limited to the value v.
- the auxiliary contact 8 remains open and the coil remains supplied with the voltage v.
- the ratio of said voltages V / v is, for example, of the order of 4 but can be higher, the voltage v being preferably calculated to be simply sufficient to keep the armature 3 in its active position.
- the return to the inactive position is carried out in the usual way, either by mechanical actuation, or under the effect of a weak spring 7 which allows the reinforcement 3 to return to its initial inactive position and, consequently, the opening (or closing) of the contact means 6 and, after a certain time determined by the oblong passage 10, the closing of the contact 8.
- the device according to the invention which has been described with regard to a remote control with movable armature but which could just as easily be described with regard to a remote control with a plunging core replacing the mobile armature, thus makes it possible to limit simply to the duration of the initial phase of tilting of the mobile frame 3, the duration of the supply of the coil 1 under the driving voltage V. It is thus possible to considerably undersize the coil 1 and, consequently, reduce the price and the size of the entire device.
Abstract
Description
La présente invention a trait à un perfectionnement aux appareils de télécommande électriques tels que télérupteurs, comportant des bobines motrices destinées à provoquer, si elles sont alimentées en courant électrique moteur par le biais d'un organe de commande, le mouvement d'une armature mobile entraînant la fermeture (ou l'ouverture) d'interrupteurs ou contacts placés dans le circuit utilisateur, la bobine étant alimentée par des impulsions électriques dont la durée est suffisante pour provoquer le basculement d'un mécanisme bistable entraînant la fermeture (ou l'ouverture) de ces interrupteurs ou contacts placés sur le circuit d'utilisation.The present invention relates to an improvement to electrical remote control devices such as remote control switches, comprising motor coils intended to cause, if they are supplied with electric motor current by means of a control member, the movement of a movable armature causing the closing (or opening) of switches or contacts placed in the user circuit, the coil being powered by electrical pulses whose duration is sufficient to cause the tilting of a bistable mechanism causing the closing (or opening ) of these switches or contacts placed on the operating circuit.
Dans de tels dispositifs, les bobines sont conçues et dimensionnées de façon à supporter le passage permanent de la puissance électrique motrice nécessaire à l'actionnement, bien qu'une seule impulsion, généralement de courte durée, soit suffisante pour mettre en action le mécanisme d'un télérupteur et, malgré cela, on observe souvent un vieillissement prématuré lorsque l'appareil est souvent sollicité.In such devices, the coils are designed and dimensioned so as to support the permanent passage of the motive electric power necessary for actuation, although only one pulse, generally of short-term, sufficient to activate the mechanism of a remote control switch and, despite this, premature aging is often observed when the device is often used.
On a déjà proposé de réaliser des relais électriques dans lesquels le mouvement mécanique provoqué par l'alimentation de la bobine entraîne, vers la fin du mouvement, l'ouverture d'un contact par lequel transite le courant d'alimentation de la bobine de sorte qu'après l'ouverture de ce contact, la bobine se trouve alimentée par l'intermédiaire d'une résistance branchée en parallèle avec le contact, ce qui réduit le courant traversant la bobine et permet ainsi d'économiser de l'énergie.It has already been proposed to produce electrical relays in which the mechanical movement caused by the supply of the coil causes, towards the end of the movement, the opening of a contact by which the supply current of the coil travels so that after the opening of this contact, the coil is supplied via a resistor connected in parallel with the contact, which reduces the current flowing through the coil and thus saves energy.
Les brevets FR-A-1.151.189, GB-A-877.036, BE-A-430.975 et DE-A-2.336.238, décrivent des électroaimants ou des contacteurs prévoyant des moyens permettant, après une première phase d'actionnement, de diminuer la puissance électrique dans la bobine, cette puissance restant cependant suffisante pour maintenir le dispositif concerné dans son état actif.The patents FR-A-1,151,189, GB-A-877,036, BE-A-430,975 and DE-A-2,336,238, describe electromagnets or contactors providing means making it possible, after a first actuation phase, to reduce the electrical power in the coil, this power however remaining sufficient to maintain the device concerned in its active state.
Cependant, dans le cas d'appareils électriques tels que les télérupteurs, la réduction de la dissipation de puissance dans le but d'économiser de l'énergie ne présente aucun intérêt en raison des faibles énergies normalement mises en jeu, ces télérupteurs étant basculés dans leurs états stables alternés par de simples impulsions de courant.However, in the case of electrical devices such as remote switches, reducing the power dissipation in order to save energy is of no interest because of the low energies normally involved, these remote switches being tilted in their stable states alternated by simple current pulses.
La présente invention se propose de remédier aux inconvénients de l'art antérieur et de fournir un perfectionnement à ce type d'appareils, qui élimine les risque de vieillissement prématuré et qui permette simultanément de diminuer le poids, l'encombrement et le prix de revient de ces appareils.The present invention proposes to remedy the drawbacks of the prior art and to provide an improvement to this type of apparatus, which eliminates the risk of premature aging and which simultaneously makes it possible to reduce the weight, the bulk and the cost price. of these devices.
L'invention a pour objet un perfectionnement aux télérupteurs du type comprenant une ou plusieurs bobines, associées à des moyens de commande extérieurs tel que, par exemple, un interrupteur-poussoir, pour provoquer le passage d'une puissance électrique motrice dans la ou les bobines, et un mécanisme bistable actionné par la ou les bobines et incorporant un élément mobile, tel qu'une armature ou un noyau plongeur, susceptible d'être déplacé par la ou les bobines, sous l'effet d'une brève impulsion d'alimentation de la ou des bobines, pour ouvrir ou fermer les moyens de contact de l'appareil, caractérisé en ce que ledit élément mobile est susceptible, lors de son mouvement vers la position active, d'ouvrir, avec un retard déterminé, un contact auxiliaire placé sur le circuit d'alimentation de bobine, en parallèle avec un moyen de limitation de puissance électrique, et en ce que le dimensionnement de la ou des bobines est diminué en étant adapté au passage de la brève impulsion de puissance qui en résulte.The subject of the invention is an improvement in remote control switches of the type comprising one or more coils, associated with external control means such as that, for example, a push switch, to cause the passage of an electric driving power in the coil (s), and a bistable mechanism actuated by the coil (s) and incorporating a movable element, such as a frame or a core plunger, capable of being displaced by the reel (s), under the effect of a brief supply pulse from the reel (s), to open or close the contact means of the device, characterized in that said element mobile is capable, during its movement towards the active position, of opening, with a determined delay, an auxiliary contact placed on the coil supply circuit, in parallel with a means of limiting electrical power, and in that the dimensioning of the coil (s) is reduced by being adapted to the passage of the brief power pulse which results therefrom.
Ainsi, lorsque le courant moteur est appliqué à la bobine et provoque le mouvement de l'élément mobile et de son mécanisme, le même mouvement provoque, avec un retard adéquat, l'ouverture du contact auxiliaire par lequel passait le courant moteur, de sorte que la ou les bobine(s) ne sont plus alimentées que par le biais du seul moyen de limitation tel que, par exemple, une résistance ou une capacité, qui n'autorise que le passage d'une puissance réduite mais néanmoins suffisante pour maintenir l'armature dans sa position rapprochée de la ou des bobines pour éviter des actionnements intempestifs du mécanisme.Thus, when the motor current is applied to the coil and causes the movement of the movable element and its mechanism, the same movement causes, with an adequate delay, the opening of the auxiliary contact through which the motor current passed, so that the coil (s) are no longer supplied only by means of the only limiting means such as, for example, a resistance or a capacitance, which only authorizes the passage of a reduced power but nevertheless sufficient to maintain the armature in its position close to the coil (s) to avoid untimely actuation of the mechanism.
L'impulsion d'excitation à pleine puissance de la bobine se trouve donc limitée à une durée très courte, correspondant à ce retard.The excitation pulse at full power of the coil is therefore limited to a very short duration, corresponding to this delay.
Le retard précipité est réglé de façon que le contact auxiliaire ne s'ouvre qu'une fois que le point de basculement de l'appareil est dépassé. Ce retard peut être obtenu par un simple jeu mécanique interposé entre l'élément mobile et le contact auxiliaire.The precipitated delay is adjusted so that the auxiliary contact does not open until the tipping point of the device has been exceeded. This delay can be obtained by a simple mechanical play interposed between the movable element and the auxiliary contact.
Conformément à l'invention, on peut donc sous-dimensionner considérablement la ou les bobines par rapport aux caractéristiques qu'elle(s) devrai(en)t présenter si elle(s) étai(en)t parcourue(s) par la puissance d'alimentation motrice pendant toute la durée d'activation.In accordance with the invention, it is therefore possible to considerably undersize the coil (s) by compared to the characteristics that it (s) should (s) present if it (s) were (s) t (s) by the motor power supply throughout the duration of activation.
D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description suivante, faite à titre d'exemple non limitatif et se référant au dessin annexé, dans lequel :
- la figure 1 représente une vue schématique d'un télérupteur perfectionné selon l'invention à l'état inactif ;
- la figure 2 représente une vue de ce télérupteur pendant son basculement vers l'état actif ;
- la figure 3 représente une vue de ce télérupteur à l'état actif.
- FIG. 1 represents a schematic view of an improved remote control switch according to the invention in the inactive state;
- FIG. 2 represents a view of this remote control switch during its tilting towards the active state;
- FIG. 3 represents a view of this remote control switch in the active state.
L'appareil représenté est un télérupteur comportant une bobine 1 enroulée autour d'une armature magnétique fixe 2, par exemple en forme de U. Lorsque le courant moteur passe à travers la bobine 1, il tend à faire basculer une armature magnétique mobile 3 autour d'un axe de pivotement 4 depuis la position inactive représentée sur la figure 1 vers la position active représentée sur la figure 3. L'armature 3 actionne dans son mouvement, une tige de mécanisme 5a qui provoque, lors du basculement dans sa position active, la fermeture (ou le cas échéant l'ouverture) de moyens de contact 6, représentés, par exemple, par deux interrupteurs placés sur un circuit électrique utilisateur.The device shown is a remote control switch comprising a
Un ressort 7 ou un autre moyen non représenté, tend à provoquer le mouvement inverse de l'armature 3 depuis la position active de la figure 3, lorsque la bobine 1 n'est plus alimentée en courant, vers la position inactive de la fig. 1.A spring 7 or another means, not shown, tends to cause the reverse movement of the
La position (ouverte ou fermée) des interrupteurs 6 reste maintenue, même lorsque l'armature revient en position inactive grâce à la présence d'un mécanisme bistable 5, de type usuel, de sorte qu'un changement de position n'interviendra que lors d'une nouvelle excitation de la bobine.The position (open or closed) of the
Conformément à l'invention, le circuit d'alimentation A1, A2 de la bobine 1 possède, par exemple sur le conducteur A1, un contact auxiliaire 8 mécaniquement relié à la tige de mécanisme 5a et agencé de façon-que, lorsque le dispositif est à l'état non actif tel que représenté sur la figure 1, ce contact 8 soit fermé. Un élément limiteur de courant, tel qu'une résistance 9, est monté en parallèle aux bornes du contact 8. Cette résistance pourrait être remplacée par un autre moyen limiteur de courant tel que, par exemple, une capacité. La valeur de ce moyen 9, par exemple la valeur de la résistance, est telle que, compte tenu de la tension d'alimentation A1, A2, un courant ne passant que par la résistance 9 suffit à maintenir l'armature 3 dans sa position active contre l'action du ressort de rappel 7.According to the invention, the supply circuit A1, A2 of the
On voit, par ailleurs, que la liaison entre l'armature 3 et le mécanisme bistable 5 s'effectue par l'intermédiaire de la tige de mécanisme 5a comportant un passage oblong 10 disposé sur la tige 5a, la dimension de ce passage oblong étant telle que dans la première partie de la course de fermeture, à partir de la position initiale représentée sur la figure 1, la tige de mécanisme 5a n'entraîne pas, dans son mouvement, le contact auxiliaire 8 qui reste fermé pendant cette période. Ce n'est que lorsque l'extrémité de l'armature 3 est parvenue approximativement en fin de course sur l'armature fixe 2 comme représenté sur la figure 2, que la suite du mouvement de l'armature mobile 3 va provoquer l'ouverture du contact auxiliaire 8. La longueur du passage oblong 9 et sa disposition sont déterminées de façon qu'au moment où l'armature 3 va ouvrir le contact auxiliaire 8, le mécanisme 5 se trouve déjà basculé au-delà de la position de non-retour à partir de laquelle le mouvement de basculement se poursuivrait, par exemple sous l'effet de la simple inertie, jusqu'à la position représentée sur la figure 3 même si, à partir de ce moment, aucun courant n'était plus adressé à la bobine.It can also be seen that the connection between the
Le fonctionnement du dispositif est alors le suivant :
- Le télérupteur est d'abord dans sa position inactive de la figure 1. A ce moment, on alimente le circuit A1, A2 en courant électrique moteur sous une tension V. La bobine, étant excitée, va alors provoquer le basculement rapide de l'armature mobile 3 vers la position active. Comme cela a été vu, pendant une première partie de la course de basculement, le contact auxiliaire 8 n'est pas entraîné et les moyens de
contact 6 sont actionnés par lemécanisme 5 alors que le contact auxiliaire 8 est toujours en position fermée permettant le passage du courant d'alimentation sous tension V.
- The remote control switch is first in its inactive position in FIG. 1. At this time, the circuit A1, A2 is supplied with electric motor current at a voltage V. The coil, being energized, will then cause the rapid tilting of the
movable armature 3 towards the active position. As has been seen, during a first part of the tilting stroke, theauxiliary contact 8 is not driven and the contact means 6 are actuated by themechanism 5 while theauxiliary contact 8 is always in the closed position allowing the passage of the supply current under voltage V.
Une fois que la position de la figure 2 a été atteinte, la poursuite du basculement de l'armature 3 provoque cette fois-ci l'ouverture du contact auxiliaire 8. A partir de ce moment, et en admettant que l'impulsion de tension V se prolonge, la bobine 1 n'est plus alimentée que par l'intermédiaire de la résistance 9 et la tension aux bornes de la bobine est, cette fois-ci, limitée à la valeur v. Lorsque l'armature 3 est arrivée à sa position finale active, le contact auxiliaire 8 reste ouvert et la bobine reste alimentée sous la tension v. Le rapport desdites tensions V/v est, par exemple, de l'ordre de 4 mais peut être supérieur, la tension v étant calculée de préférence pour être simplement suffisante pour maintenir l'armature 3 dans sa position.active.Once the position of FIG. 2 has been reached, the continued tilting of the
Le retour en position inactive s'effectue de façon usuelle, soit par un actionnement mécanique, soit sous l'effet d'un faible ressort 7 qui permet le retour de l'armature 3 dans sa position initiale inactive et, par conséquent, l'ouverture (ou la fermeture) des moyens de con tact 6 et, au bout d'un certain temps déterminé par le passage oblong 10, la fermeture du contact 8.The return to the inactive position is carried out in the usual way, either by mechanical actuation, or under the effect of a weak spring 7 which allows the
Le dispositif selon l'invention, qui a été décrit à propos d'un télérupteur à armature mobile mais qui pourrait tout aussi bien être décrit à propos d'un télérupteur 'à noyau plongeant remplaçant l'armature mobile, permet ainsi de limiter simplement à la durée de la phase initiale de basculement de l'armature mobile 3, la durée de l'alimentation de la bobine 1 sous la tension motrice V. On peut ainsi considérablement sous-dimensionner la bobine 1 et, en conséquence, réduire le prix et l'encombrement du dispositif tout entier.The device according to the invention, which has been described with regard to a remote control with movable armature but which could just as easily be described with regard to a remote control with a plunging core replacing the mobile armature, thus makes it possible to limit simply to the duration of the initial phase of tilting of the
Bien que l'invention ait été décrite à propos d'une forme de réalisation particulière, il est bien entendu qu'elle n'y est nullement limitée et qu'on peut lui apporter diverses modifications de formes ou de matériaux sans pour cela s'éloigner ni de son cadre ni de son esprit.Although the invention has been described with reference to a particular embodiment, it is understood that it is in no way limited thereto and that it can be made various modifications of shapes or materials without thereby distance neither from his frame nor from his mind.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT86402167T ATE99452T1 (en) | 1985-10-14 | 1986-10-02 | REMOTE ELECTRIC SWITCHES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8515185A FR2588691B1 (en) | 1985-10-14 | 1985-10-14 | IMPROVEMENT WITH ELECTRICAL SWITCHES |
| FR8515185 | 1985-10-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0221801A1 true EP0221801A1 (en) | 1987-05-13 |
| EP0221801B1 EP0221801B1 (en) | 1993-12-29 |
Family
ID=9323791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86402167A Revoked EP0221801B1 (en) | 1985-10-14 | 1986-10-02 | Remotely controlled electrical switches |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0221801B1 (en) |
| AT (1) | ATE99452T1 (en) |
| DE (1) | DE3689468T2 (en) |
| FR (1) | FR2588691B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2198885A (en) * | 1986-11-26 | 1988-06-22 | Toshiba Kk | A relay |
| WO2001020632A1 (en) * | 1999-09-16 | 2001-03-22 | Siemens Aktiengesellschaft | Electromagnetic switchgear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE430975A (en) * | ||||
| FR1151189A (en) * | 1956-06-04 | 1958-01-24 | Citroen Sa Andre | automatic dual-speed electromagnet |
| GB877036A (en) * | 1958-10-16 | 1961-09-13 | Crabtree & Co Ltd J A | Improvements in and connected with electric contactors |
| DE2336238A1 (en) * | 1973-07-17 | 1975-02-06 | Bbc Brown Boveri & Cie | Contactor for A.C. and D.C. actuation with exchangeable coil - has upper and lower magnetic armature and coupling contact for series resistor |
| US3943416A (en) * | 1974-12-18 | 1976-03-09 | General Electric Company | Electromagnetic switching device having an improved energizing circuit |
-
1985
- 1985-10-14 FR FR8515185A patent/FR2588691B1/en not_active Expired - Fee Related
-
1986
- 1986-10-02 DE DE3689468T patent/DE3689468T2/en not_active Expired - Fee Related
- 1986-10-02 AT AT86402167T patent/ATE99452T1/en not_active IP Right Cessation
- 1986-10-02 EP EP86402167A patent/EP0221801B1/en not_active Revoked
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE430975A (en) * | ||||
| FR1151189A (en) * | 1956-06-04 | 1958-01-24 | Citroen Sa Andre | automatic dual-speed electromagnet |
| GB877036A (en) * | 1958-10-16 | 1961-09-13 | Crabtree & Co Ltd J A | Improvements in and connected with electric contactors |
| DE2336238A1 (en) * | 1973-07-17 | 1975-02-06 | Bbc Brown Boveri & Cie | Contactor for A.C. and D.C. actuation with exchangeable coil - has upper and lower magnetic armature and coupling contact for series resistor |
| US3943416A (en) * | 1974-12-18 | 1976-03-09 | General Electric Company | Electromagnetic switching device having an improved energizing circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2198885A (en) * | 1986-11-26 | 1988-06-22 | Toshiba Kk | A relay |
| GB2198885B (en) * | 1986-11-26 | 1990-09-05 | Toshiba Kk | Cooking apparatus using relays |
| US5040089A (en) * | 1986-11-26 | 1991-08-13 | Kabushiki Kaisha Toshiba | D.C. relay with power reducing function |
| WO2001020632A1 (en) * | 1999-09-16 | 2001-03-22 | Siemens Aktiengesellschaft | Electromagnetic switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3689468T2 (en) | 1994-07-14 |
| FR2588691B1 (en) | 1990-11-30 |
| FR2588691A1 (en) | 1987-04-17 |
| ATE99452T1 (en) | 1994-01-15 |
| EP0221801B1 (en) | 1993-12-29 |
| DE3689468D1 (en) | 1994-02-10 |
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