EP0304539B1 - Switching bridge for electrical switching devices, particularly for contactors - Google Patents
Switching bridge for electrical switching devices, particularly for contactors Download PDFInfo
- Publication number
- EP0304539B1 EP0304539B1 EP88104209A EP88104209A EP0304539B1 EP 0304539 B1 EP0304539 B1 EP 0304539B1 EP 88104209 A EP88104209 A EP 88104209A EP 88104209 A EP88104209 A EP 88104209A EP 0304539 B1 EP0304539 B1 EP 0304539B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- bridge
- spring
- contact spring
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2025—Bridging contacts comprising two-parallel bridges
Definitions
- the invention relates to a switching bridge for electrical switching devices, in particular for contactors, with a number of contact bridges which are arranged next to and / or one above the other in windows and which carry contact pieces at their ends and which are each under the pressure of a contact spring.
- Switching bridges of the aforementioned type are known in a wide variety of embodiments, for example from DE-A-1 909 460. What these switching bridges have in common, however, is that all the contact springs are designed as spiral springs and are inserted into the respective windows in such a way that they are either on the one hand Support the top or bottom wall of the window and on the other hand on the relevant contact bridge.
- This construction has the disadvantage that only manual manufacture of the switching bridge is possible, that is to say that each contact bridge with the associated spiral-shaped contact spring must be inserted into the relevant window by hand.
- Another disadvantage is that the coil spring only presses in the middle on the contact bridge in question and cannot cause the contact bridge to be held.
- each contact back seen in its longitudinal direction, must be provided with projections on both sides or other guide pieces, which usually grip around the edges of the window and in this way keep the contact bridge immovable in its longitudinal direction.
- a cam switch in which the switching bridges each have a flat contact carrier with a rectangular cross-section, to which the movable contacts are attached.
- the contact carrier is bent upwards at the ends by 90 o and provided with guide slots for receiving a leaf spring.
- a coil spring is mounted between the contact carrier and a fixed switch part. Above the leaf spring there is an oval, rotatably mounted switching cam that presses on the leaf spring at a quarter turn and switches the switching bridge on against the force of the coil spring. After a further quarter of a turn, the switching cam lifts off the leaf spring again, so that the coil spring causes the switching unit in question to be switched off again.
- the switching cam not only generates pressure forces on the switching bridge in the direction of the on and off movement during rotation, but also additional force components in the longitudinal direction of the switching bridge, it must be guided. This is done by attaching two guide pins to the movable contact carrier are, which slide in the guide holes of a solid, designed as an insulating body. On the one hand, this means a substantial increase in the mass to be moved when shifting, as well as friction, wear and tear and thus abrasion.
- the contact rocker represents a switching bridge, which consists of a contact bridge carrying contact pieces and a curved leaf spring, in the ends of which holes are provided, through which folded lugs engage, which on the other hand are formed on the ends of the contact bridge.
- a bracket with a leg is provided, which has a hole into which a nose engages, which is attached to the apex of the curved leaf spring, so that it is secured against lateral displacement.
- the invention is based on the object of creating a switching bridge which, on the one hand, permits automatic production, that is to say equipping with contact bridges, and in which the abrasion is practically avoided, so that a high level of contact reliability is ensured.
- each contact spring is designed as a leaf spring bent to the associated contact bridge, that the contact spring has a locking point in the form of semicircular recesses on the two longitudinal edges in the central region, that the contact spring is convex as seen from the locking point is that the latching point interacts positively with the adjacent window wall in that projections shaped and arranged in accordance with the recesses engage into the recesses, and that the ends of the contact bridge are bent upwards by 90 o to the contact spring, so that further projections engage on the end faces of the bent ends of the contact bridge in correspondingly shaped holes near the ends of the contact spring, so that the contact bridge is held in the longitudinal direction by the contact spring and in the transverse direction by the side walls of the window.
- each contact bridge can be grasped mechanically together with the leaf spring lying thereon. With a slight compression of the leaf spring, it can then be easily pushed into the window with the contact bridge without tilting or the like being necessary. If the leaf spring is now released, the projections engage in the semicircular recesses of the contact spring, so that the contact spring and the contact bridge are held securely at the same time.
- Figures 1 and 2 show a partial section of a switching bridge 1 with a transverse window 2.
- the switching bridge can have any number of windows one above the other and / or next to each other, so that the construction explained below is repeated accordingly often for each window.
- recesses 3 and 4 are provided on both sides of the window, so that the actual window 2 is incorporated in the web 5.
- the illustrated embodiment of the switching bridge is particularly characterized by the secure mounting of the contact bridge 55.
- the ends 56 and 57 of the contact bridge 55 are bent over by 90 o towards the top.
- Central projections 58 and 59 are provided on the upper end faces of these ends, which engage in correspondingly shaped holes 80 which engage near the ends of a contact spring 62.
- the contact spring 62 is designed as a leaf spring bent convexly with respect to the associated contact bridge 55 located underneath.
- Contact pieces 60 and 61 are attached to the underside of the contact bridge 55.
- semicircular recesses 63 and 64 are provided, into which correspondingly shaped and arranged projections 65 and 66 projecting into the window 2 engage.
- an automatic assembly is possible by simply inserting the contact bridge with the contact spring.
Description
Die Erfindung bezieht sich auf eine Schaltbrücke für elektrische Schaltgeräte, insbesondere für Schütze, mit einer Anzahl neben- und/oder übereinander in Fenstern beweglich angeordneter Kontaktbrücken, welche an ihren Enden Kontaktstücke tragen und welche unter dem Druck je einer Kontaktfeder stehen.The invention relates to a switching bridge for electrical switching devices, in particular for contactors, with a number of contact bridges which are arranged next to and / or one above the other in windows and which carry contact pieces at their ends and which are each under the pressure of a contact spring.
Schaltbrücken der vorbezeichneten Gattung sind in den verschiedensten Ausführungsformen bekannt, beispielsweise aus der DE-A-1 909 460. Gemeinsam ist diesen Schaltbrücken aber, daß sämtliche Kontaktfedern als Spiralfedern ausgebildet und derart in die jeweiligen Fenster eingesetzt sind, daß sie sich einerseits entweder an der oberen oder unteren Wand des Fensters und andererseits an der betreffenden Kontaktbrücke abstützen. Diese Konstruktion bringt den Nachteil mit sich, daß nur eine manuelle Fertigung der Schaltbrücke möglich ist, das heißt, daß jede Kontaktbrücke mit der dazugehörigen spiralförmigen Kontaktfeder von Hand in das betreffende Fenster eingesetzt werden muß. Ein weiterer Nachteil besteht darin, daß die Spiralfeder nur in der Mitte auf die betreffende Kontaktbrücke drückt und keine Halterung der Kontaktbrücke bewirken kann. Daher muß jede Kontaktrücke in ihrer Längsrichtung gesehen mit beiderseitigen Vorsprüngen oder sonstigen Führungsstücken versehen werden, die meist um die Ränder des Fensters greifen und die Kontaktbrücke auf diese Weise in ihrer Längsrichtung unverschieblich halten. Bei der sehr großen Zahl von Schaltbewegungen, die jede Kontaktbrücke in dem Fenster ausführen muß, ergibt sich ein außerordentlich großer Abrieb sowohl des meist aus Kunststoff bestehenden Materials der Schaltbrücke im Bereich der Fenster als auch an den Kontaktbrücken selbst. Dieser Abrieb kommt zumindest teilweise auf die Kontaktstücke, die dadurch verschmutzt werden. Dadurch wird die Kontaktsicherheit im Laufe der Betriebszeit sehr beeinträchtigt.Switching bridges of the aforementioned type are known in a wide variety of embodiments, for example from DE-A-1 909 460. What these switching bridges have in common, however, is that all the contact springs are designed as spiral springs and are inserted into the respective windows in such a way that they are either on the one hand Support the top or bottom wall of the window and on the other hand on the relevant contact bridge. This construction has the disadvantage that only manual manufacture of the switching bridge is possible, that is to say that each contact bridge with the associated spiral-shaped contact spring must be inserted into the relevant window by hand. Another disadvantage is that the coil spring only presses in the middle on the contact bridge in question and cannot cause the contact bridge to be held. Therefore, each contact back, seen in its longitudinal direction, must be provided with projections on both sides or other guide pieces, which usually grip around the edges of the window and in this way keep the contact bridge immovable in its longitudinal direction. With the very large number of switching movements that each contact bridge must carry out in the window, there is an extraordinarily high abrasion both of the mostly plastic material of the switching bridge in the area of the windows and on the contact bridges themselves. This abrasion comes at least partly on the contact pieces, which are soiled. As a result, the reliability of contact is very impaired in the course of the operating time.
Aus der DE-C-1 071 198 ist auch bereits ein elektrisches Schaltgerät mit einer Schaltbrücke bekannt, bei welchem die Kontaktfeder als konvex gebogene Blattfeder ausgebildet ist, die mit ihren Enden auf die Kontaktbrücke drückt. Die Kontaktbrücke und die Kontaktfeder sind in einem Fenster eines Stößelkopfes mittels eines querverlaufenden bolzenartigen Verschlußstückes gehalten. An dem Stirnende des Kopfes ist ein Zylinderstück mit einem Bajonettverschluß angebracht. Nach dem Einsetzen der Kontaktbrücke und der Kontaktfeder müssen das Verschlußstück und das Zylinderstück nacheinander befestigt werden. Eine automatische Bestückung ist praktisch nicht durchführbar.From DE-C-1 071 198 an electrical switching device with a switching bridge is already known, in which the contact spring is designed as a convexly curved leaf spring, which presses with its ends onto the contact bridge. The contact bridge and the contact spring are held in a window of a plunger head by means of a transverse bolt-like closure piece. At the front of the head is a piece of cylinder with a bayonet lock. After inserting the contact bridge and the contact spring, the locking piece and the cylinder piece must be fastened one after the other. An automatic assembly is practically not feasible.
Aus der CH-A-235 649 ist ein Nockenschalter bekannt, bei dem die Schaltbrücken jeweils einen flachen Kontaktträger rechteckigen Querschnitts aufweisen, an dem die beweglichen Kontakte befestigt sind. Der Kontaktträger ist an den Enden um 90o nach oben hin aufgebogen und mit Führungsschlitzen zur Aufnahme einer Blattfeder versehen. Zwischen dem Kontaktträger und einem festen Schalterteil ist eine Schraubenfeder gelagert. Oberhalb der Blattfeder befindet sich ein ovaler drehbar gelagerter Schaltnocken, der bei Viertelumdrehung auf die Blattfeder drückt und die Schaltbrücke entgegen der Kraft der Schraubenfeder zum Einschalten bringt. Nach einer weiteren Viertelumdrehung hebt der Schaltnocken wieder von der Blattfeder ab, so daß die Schraubenfeder wieder ein Ausschalten der betreffenden Schalteinheit bewirkt. Da der Schaltnocken bei der Drehung nicht nur Druckkräfte auf die Schaltbrücke in Richtung der Ein- und Ausschaltbewegung erzeugt, sondern zusätzliche Kraftkomponenten in Längsrichtung der Schaltbrücke, muß diese zwangsweise geführt werden. Dies erfolgt dadurch, daß an dem beweglichen Kontaktträger zwei Führungsstifte befestigt sind, die in Führungslöchern eines festen, als Isolierpreßkörper ausgebildeten Teils gleiten. Dies bedeutet einmal eine wesentliche Erhöhung der beim Schalten zu bewegenden Masse sowie Reibung, Verschleiß und damit Abrieb.From CH-A-235 649 a cam switch is known, in which the switching bridges each have a flat contact carrier with a rectangular cross-section, to which the movable contacts are attached. The contact carrier is bent upwards at the ends by 90 o and provided with guide slots for receiving a leaf spring. A coil spring is mounted between the contact carrier and a fixed switch part. Above the leaf spring there is an oval, rotatably mounted switching cam that presses on the leaf spring at a quarter turn and switches the switching bridge on against the force of the coil spring. After a further quarter of a turn, the switching cam lifts off the leaf spring again, so that the coil spring causes the switching unit in question to be switched off again. Since the switching cam not only generates pressure forces on the switching bridge in the direction of the on and off movement during rotation, but also additional force components in the longitudinal direction of the switching bridge, it must be guided. This is done by attaching two guide pins to the movable contact carrier are, which slide in the guide holes of a solid, designed as an insulating body. On the one hand, this means a substantial increase in the mass to be moved when shifting, as well as friction, wear and tear and thus abrasion.
Desweiteren ist aus der DE-C-1 158 151 ein Schiebe- oder Drehschalter bekannt, bei dem es darum geht, unter Verwendung einer einzigen Kontaktwippe eine zweifache Überbrückung von jeweils zwei zu verbindenden Messerkontakten zu schaffen, also je nach Stellung jeweils zwei Messerkontakte elektrisch miteinander zu verbinden und dabei durch Wirkung der Kontaktwippe einen gleichmäßigen Kontaktdruck auf sämtliche Kontaktstellen zu erreichen. Die Kontaktwippe stellt bei dieser Konstruktion eine Schaltbrücke dar, die aus einer Kontaktstücke tragenden Kontaktbrücke und einer gebogenen Blattfeder besteht, in deren Enden Löcher vorgesehen sind, durch welche umgekantete Lappen greifen, die andererseits an den Enden der Kontaktbrücke angeformt sind. Zur Befestigung der Kontaktwippe ist ein Bügel mit einem Schenkel vorgesehen, der ein Loch aufweist, in welches eine Nase eingreift, die am Scheitel der gebogenen Blattfeder befestigt ist, so daß diese gegen seitliches Verschieben gesichert ist.Furthermore, from DE-C-1 158 151 a slide or rotary switch is known, which is about using a single contact rocker to create a double bridging of two knife contacts to be connected, that is, depending on the position, two knife contacts electrically with each other to connect and achieve a uniform contact pressure on all contact points by the action of the contact rocker. In this construction, the contact rocker represents a switching bridge, which consists of a contact bridge carrying contact pieces and a curved leaf spring, in the ends of which holes are provided, through which folded lugs engage, which on the other hand are formed on the ends of the contact bridge. To attach the contact rocker, a bracket with a leg is provided, which has a hole into which a nose engages, which is attached to the apex of the curved leaf spring, so that it is secured against lateral displacement.
Der Erfindung liegt die Aufgabe zu Grunde, eine Schaltbrücke zu schaffen, welche einmal eine automatische Fertigung, das heißt Bestückung mit Kontaktbrücken gestattet und bei welcher der Abrieb praktisch vermieden wird, so daß dadurch eine hohe Kontaktsicherheit gewährleistet ist.The invention is based on the object of creating a switching bridge which, on the one hand, permits automatic production, that is to say equipping with contact bridges, and in which the abrasion is practically avoided, so that a high level of contact reliability is ensured.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß jede Kontaktfeder als zu der zugehörigen Kontaktbrücke gebogene Blattfeder ausgebildet ist, daß die Kontaktfeder im mittleren Bereich eine Raststelle in Form von halbkreisförmigen Aussparungen an den beiden Längsrändern aufweist, daß die Kontaktfeder von der Raststelle aus gesehen konvex ausgebildet ist, daß die Raststelle mit der benachbarten Fensterwandung dadurch formschlüssig zusammenwirkt, daß entsprechend den Aussparungen geformte und angeordnete, in das Fenster ragende Vorsprünge in die Aussparungen eingreifen, und daß die Enden der Kontaktbrücke um 90o nach oben zur Kontaktfede gebogen sind, daß weitere Vorsprünge an den Stirnseiten der umgebogenen Enden der Kontaktbrücke in entsprechend geformte Löcher nahe der Enden der Kontaktfeder eingreifen, so daß die Kontaktbrücke in Längsrichtung von der Kontaktfeder und in Querrichtung von den Seitenwänden des Fensters gehalten ist.The object is achieved in that each contact spring is designed as a leaf spring bent to the associated contact bridge, that the contact spring has a locking point in the form of semicircular recesses on the two longitudinal edges in the central region, that the contact spring is convex as seen from the locking point is that the latching point interacts positively with the adjacent window wall in that projections shaped and arranged in accordance with the recesses engage into the recesses, and that the ends of the contact bridge are bent upwards by 90 o to the contact spring, so that further projections engage on the end faces of the bent ends of the contact bridge in correspondingly shaped holes near the ends of the contact spring, so that the contact bridge is held in the longitudinal direction by the contact spring and in the transverse direction by the side walls of the window.
Es hat sich überraschenderweise in der Praxis erwiesen, daß durch die erfindungsgemäße Ausbildung der Schaltbrücke auch nach längerer Betriebszeit praktisch kein Abrieb auftritt. Die maschinelle Fertigung ist deshalb einfach durchzuführen, weil jede Kontaktbrücke zusammen mit der aufliegenden Blattfeder maschinell gefaßt werden kann. Unter leichtem Zusammendrücken der Blattfeder kann diese dann mit der Kontaktbrücke in das Fenster leicht eingeschoben werden, ohne daß ein Verkanten od. dgl. erforderlich ist. Wenn nun die Blattfeder losgelassen wird, greifen die Vorsprünge in die halbkreisförmigen Aussparungen der Kontaktfeder, so daß die Kontaktfeder und die Kontaktbrücke gleichzeitig sicher gehalten sind.Surprisingly, it has been found in practice that due to the inventive design of the switching bridge, practically no wear occurs even after a long period of operation. The mechanical production is easy to carry out because each contact bridge can be grasped mechanically together with the leaf spring lying thereon. With a slight compression of the leaf spring, it can then be easily pushed into the window with the contact bridge without tilting or the like being necessary. If the leaf spring is now released, the projections engage in the semicircular recesses of the contact spring, so that the contact spring and the contact bridge are held securely at the same time.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung im Schema dargestellt, und zwar zeigen
- Figur 1 einen Teilvertikalschnitt durch eine Schaltbrücke mit betriebsfertig eingesetzter Kontaktbrücke und Kontaktfeder und
Figur 2 einen Horizontalschnitt gemäß Schnittlinie II-II in Figur 1.
- 1 shows a partial vertical section through a switching bridge with the contact bridge and contact spring inserted and ready for operation
- FIG. 2 shows a horizontal section along section line II-II in FIG. 1.
Die Figuren 1 und 2 zeigen einen Teilausschnitt aus einer Schaltbrücke 1 mit einem querverlaufenden Fenster 2. Die Schaltbrücke kann beliebig viele Fenster übereinander und/oder nebeneinander aufweisen, so daß sich je Fenster die nachfolgend erläuterte Konstruktion entsprechend oft wiederholt. In der Schaltbrücke 1 sind zu beiden Seiten des Fensters Ausnehmungen 3 und 4 vorgesehen, so daß das eigentliche Fenster 2 in dem Steg 5 eingearbeitet ist.Figures 1 and 2 show a partial section of a switching bridge 1 with a
Das dargestellte Ausführungsbeispiel der Schaltbrücke zeichnet sich besonders durch die sichere Halterung der Kontaktbrücke 55 aus. Die Enden 56 und 57 der Kontaktbrücke 55 sind um 90o nach oben hin umgebogen. An den oberen Stirnseiten dieser Enden sind mittige Vorsprünge 58 und 59 vorgesehen, welche in entsprechend geformte Löcher 80 eingreifen, die nahe den Enden einer Kontaktfeder 62 eingreifen. Wie Figur 1 verdeutlicht, ist die Kontaktfeder 62 als konvex zu der zugehörigen darunter befindlichen Kontaktbrücke 55 gebogene Blattfeder ausgebildet. Auf der Unterseite der Kontaktbrücke 55 sind Kontaktstücke 60 und 61 angebracht. Im mittleren Bereich der beiden Längsränder der Kontaktfeder 62 sind halbkreisförmige Aussparungen 63 und 64 vorgesehen, in welche entsprechend geformte und angeordnete, in das Fenster 2 ragende Vorsprünge 65 und 66 eingreifen. Bei diesem Ausführungsbeispiel ist eine automatische Bestückung durch einfaches Einschieben der Kontaktbrücke mit der Kontaktfeder möglich.The illustrated embodiment of the switching bridge is particularly characterized by the secure mounting of the
Es sei noch bemerkt, daß das dargestellte Ausführungsbeispiel der Deutlichkeit halber sehr stark vergrößert gezeichnet ist und zwar in einem Maßstab 10:1.It should also be noted that, for the sake of clarity, the exemplary embodiment shown is drawn in a greatly enlarged manner, specifically on a 10: 1 scale.
Claims (1)
- Connecting bridge for electrical switchgear, in particular for contactors, with a number of contact bridges (55) arranged to move in windows (2) one beside the other and/or one above the other, which at their ends support contact members (60, 61) and which are each under the pressure of a contact spring, characterised in that each contact spring (62) is constructed as a leaf spring bent with respect to the associated contact bridge (55), that in the central region the contact spring (62) comprises a locking point in the form of semi circular recesses (63, 64) at the two longitudinal edges, that seen from the locking point the contact spring (62) has a convex construction, that the locking point cooperates positively with the adjacent window wall due to the fact that projections (65, 66) formed and arranged to correspond to the recesses (63, 64) and projecting into the window (2) engage in the recesses (63, 64) and that the ends (56, 57) of the contact bridge (55) are bent over by 90° upwards towards the contact spring (62), that further projections (58, 59) on the end faces of the bent ends (56, 57) of the contact bridge (55) engage in correspondingly shaped holes (80) close to the ends of the contact spring (62), so that the contact bridge (55) is held in the longitudinal direction by the contact spring (62) and in the transverse direction by the side walls of the window (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88104209T ATE85455T1 (en) | 1984-03-31 | 1984-10-24 | SWITCHING JUMPER FOR ELECTRICAL SWITCHING DEVICES, ESPECIALLY CONTACTORS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP84103593 | 1984-03-31 | ||
| EP84103593 | 1984-03-31 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84112789.7 Division | 1984-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0304539A1 EP0304539A1 (en) | 1989-03-01 |
| EP0304539B1 true EP0304539B1 (en) | 1993-02-03 |
Family
ID=8191854
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84112789A Expired - Lifetime EP0162952B2 (en) | 1984-03-31 | 1984-10-24 | Switching bridge for electrical switching devices, particularly for contactors |
| EP88104209A Expired - Lifetime EP0304539B1 (en) | 1984-03-31 | 1984-10-24 | Switching bridge for electrical switching devices, particularly for contactors |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84112789A Expired - Lifetime EP0162952B2 (en) | 1984-03-31 | 1984-10-24 | Switching bridge for electrical switching devices, particularly for contactors |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4594484A (en) |
| EP (2) | EP0162952B2 (en) |
| DE (2) | DE3480038D1 (en) |
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| CH235649A (en) * | 1942-12-28 | 1944-12-15 | Sauter Ag | Cam switches. |
| US3260824A (en) * | 1963-07-29 | 1966-07-12 | Arrow Hart & Hegeman Electric | Low energy non-arcing electric relay construction |
| DE1894372U (en) * | 1964-03-26 | 1964-06-11 | Stotz Kontakt Gmbh | SWITCHING DEVICE, IN PARTICULAR AIR PROTECTION FOR HIGH INRUSH CURRENT PEAKS. |
| FR1435781A (en) * | 1964-06-22 | 1966-04-22 | Telemecanique Electrique | Improvements to the contact poles of current breaking devices |
| JPS4844312B1 (en) * | 1968-08-05 | 1973-12-24 | ||
| FR2257141B1 (en) * | 1974-01-03 | 1978-03-10 | Telemecanique Electrique | |
| DE8126801U1 (en) * | 1981-09-14 | 1982-03-04 | Siemens AG, 1000 Berlin und 8000 München | "Contact arrangement for electrical switching devices |
-
1984
- 1984-10-24 DE DE8484112789T patent/DE3480038D1/en not_active Expired
- 1984-10-24 EP EP84112789A patent/EP0162952B2/en not_active Expired - Lifetime
- 1984-10-24 EP EP88104209A patent/EP0304539B1/en not_active Expired - Lifetime
- 1984-10-24 DE DE8888104209T patent/DE3486065D1/en not_active Expired - Fee Related
-
1985
- 1985-03-18 US US06/713,267 patent/US4594484A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0162952A1 (en) | 1985-12-04 |
| EP0162952B2 (en) | 1992-12-23 |
| EP0304539A1 (en) | 1989-03-01 |
| DE3480038D1 (en) | 1989-11-09 |
| EP0162952B1 (en) | 1989-10-04 |
| US4594484A (en) | 1986-06-10 |
| DE3486065D1 (en) | 1993-03-18 |
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