EP1085551A2 - Latching device for a switch - Google Patents

Latching device for a switch Download PDF

Info

Publication number
EP1085551A2
EP1085551A2 EP00119982A EP00119982A EP1085551A2 EP 1085551 A2 EP1085551 A2 EP 1085551A2 EP 00119982 A EP00119982 A EP 00119982A EP 00119982 A EP00119982 A EP 00119982A EP 1085551 A2 EP1085551 A2 EP 1085551A2
Authority
EP
European Patent Office
Prior art keywords
lever
ratchet lever
abutment
ratchet
contact
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
EP00119982A
Other languages
German (de)
French (fr)
Other versions
EP1085551B1 (en
EP1085551A3 (en
Inventor
Heinz Dipl.-Ing. Pofahl
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.)
Geyer AG
Original Assignee
Geyer 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 Geyer AG filed Critical Geyer AG
Publication of EP1085551A2 publication Critical patent/EP1085551A2/en
Publication of EP1085551A3 publication Critical patent/EP1085551A3/en
Application granted granted Critical
Publication of EP1085551B1 publication Critical patent/EP1085551B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/505—Latching devices between operating and release mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a latching device for an electrical switch, in particular for a circuit breaker.
  • the overstroke required for the manufacturing accuracy and possible contact erosion which is required beyond the dead center, influences the time between the occurrence of an overcurrent leading to tripping and lifting the contact.
  • DE -OS 15 63 781 A1 contains a switching mechanism, the knee joint of which consists of the switching lever and a link which is articulated and resiliently formed therein.
  • the link in turn is connected to the shift lever, which is designed as a two-armed lever and is rotatably mounted in an elongated hole by means of an axis of rotation
  • DE 197 01 470 C1 includes a switching mechanism in which an over-center position is achieved with the aid of a knee joint, the overstroke of the knee joint required for generating the contact pressure and for tolerance compensation and contact erosion by an evasive movement which changes the length of one of the knee joints Leg causes, is generated.
  • the part of the knee joint which serves as a ratchet lever acts directly on the contact lever which is rotatably mounted on a fixed axis.
  • the object of the invention is to design the latching device so that at lowest possible number and mass of the parts moving during the shutdown optimal release of the latching in both the thermal and the magnetic release occurs.
  • a latching device of an electrical switch in particular a circuit breaker, must meet different requirements for thermal and magnetic unlatching.
  • the forces and distances required for this must remain as constant as possible (unlatching work remains constant).
  • Typical are toggle lever solutions in which the ratio of the lever arm lengths to the diameters of the bearing axles determine the influence of the coefficient of friction.
  • the two contact partners in the case of a magnetic release (short circuit), the two contact partners must be separated as quickly as possible, which cannot be adequately achieved with a conventional toggle lever solution.
  • a complete separation of the two locking partners is advantageous here (free movement of the contact unaffected by the other locking partner and thus lower masses that have to be accelerated).
  • the key factor is the release path. Unlatching force fluctuations play a minor role in this case.
  • a sudden increase in the force P causes the latch lever 2 to slide off the latch lever abutment 3 due to the inertia of the latch lever abutment 3 and thus a decoupling of both parts (principle of latching).
  • the contact lever 4 can move unaffected and thus move faster.
  • ratchet lever 2 and ratchet lever abutment 3 there is now sliding and no rotational movement, which is the essential content of the invention.
  • the force P2 causes the contact pressure at the contact point 4A in the switched-on state and holds the contact lever 4 in its switched-off position when the switch is switched off.

Landscapes

  • Breakers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

Verklinkungseinrichtung für einen elektrischen Schalter, insbesondere für einen Leitungsschutzschalter, mit einem Schalthebel (1), an dem schwenkbar ein Klinkenhebel (2) angelenkt ist, der mit dem am Kontakthebel (4) angeordneten Klinkenhebelwiderlager (3) ein Kniegelenk (2;3) bildet, durch das eine Übertotpunktlage bewirkt wird. Das Klinkenhebelwiderlager (3) an dem der Kontaktstelle (4A) gegenüberliegenden Arm des Kontakthebels (4) ist so gestaltet und schwenkbar befestigt, daß es zwei unterschiedliche Entklinkungsabläufe zuläßt. <IMAGE>Latching device for an electrical switch, in particular for a circuit breaker, with a switching lever (1) on which a ratchet lever (2) is pivotably articulated, which forms a knee joint (2; 3) with the ratchet lever abutment (3) arranged on the contact lever (4) , which causes an overdead position. The pawl lever abutment (3) on the arm of the contact lever (4) opposite the contact point (4A) is designed and pivotably attached so that it allows two different unlatching processes. <IMAGE>

Description

Die Erfindung betrifft eine Verklinkungseinrichtung für einen elektrischen Schalter, insbesondere für einen Leitungsschutzschalter.
Bei den bekannten Ausführungen DE 35 17 748 C1, DE 195 07 605 C1 und DE 41 16 454 C2 beeinflußt der für die Fertigungsgenauigkeit und eventuellen Kontaktabbrand benötigte Überhub, der über den Totpunkt hinaus erforderlich ist, die Zeitspanne zwischen dem Auftreten eines zum Auslösen führenden Überstromes und dem Abheben des Kontaktes.
Die DE -OS 15 63 781 A1 beinhaltet einen Schaltmechanismus, dessen Kniegelenk aus dem Schalthebel und einem daran angelenkten, in sich federnd ausgebildeten, Glied besteht. Das Glied wiederum ist mit dem Schalthebel verbunden, der als zweiarmiger Hebel ausgebildet ist und mittels einer Drehachse in einem Langloch drehbar gelagert ist
Die DE 197 01 470 C1 beinhaltet einen Schaltmechanismus, bei der mit Hilfe eines Kniegelenks eine Übertotpunktlage bewirkt wird, wobei der für die Erzeugung des Kontaktdrucks sowie für den Toleranzausgleich und Kontaktabbrands erforderliche Überhub des Kniegelenks durch eine Ausweichbewegung, die eine Längenänderung eines der das Kniegelenk bildenden Schenkel bewirkt, erzeugt wird. Dabei wirkt der als Klinkenhebel dienende Teil des Kniegelenks unmittelbar auf den an einer ortsfesten Achse drehbar gelagerten Kontakthebel ein.The invention relates to a latching device for an electrical switch, in particular for a circuit breaker.
In the known versions DE 35 17 748 C1, DE 195 07 605 C1 and DE 41 16 454 C2, the overstroke required for the manufacturing accuracy and possible contact erosion, which is required beyond the dead center, influences the time between the occurrence of an overcurrent leading to tripping and lifting the contact.
DE -OS 15 63 781 A1 contains a switching mechanism, the knee joint of which consists of the switching lever and a link which is articulated and resiliently formed therein. The link in turn is connected to the shift lever, which is designed as a two-armed lever and is rotatably mounted in an elongated hole by means of an axis of rotation
DE 197 01 470 C1 includes a switching mechanism in which an over-center position is achieved with the aid of a knee joint, the overstroke of the knee joint required for generating the contact pressure and for tolerance compensation and contact erosion by an evasive movement which changes the length of one of the knee joints Leg causes, is generated. The part of the knee joint which serves as a ratchet lever acts directly on the contact lever which is rotatably mounted on a fixed axis.

Aufgabe der Erfindung ist, die Verklinkungseinrichtung so auszubilden, daß bei geringstmöglicher Anzahl und Masse der bei der Abschaltung bewegten Teile eine optimale Aufhebung der Verklinkung sowohl bei der thermischen als auch bei der magnetischen Auslösung erfolgt.The object of the invention is to design the latching device so that at lowest possible number and mass of the parts moving during the shutdown optimal release of the latching in both the thermal and the magnetic release occurs.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.
Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the characterizing features of claim 1.
Advantageous embodiments of the invention are the subject of the dependent claims.

Eine Verklinkungseinrichtung eines elektrischen Schalters, insbesondere eines Leitungsschutzschalters, muß bei der thermischen und bei der magnetischen Entklinkung unterschiedliche Anforderungen erfüllen.
Um einen möglichst konstanten Zeitpunkt der thermischen Entklinkung zu erreichen, müssen die dafür benötigten Kräfte und Wege möglichst gleich bleiben (Entklinkarbeit bleibt konstant). Da sich aber die Reibwerte und damit die Entklinkkräfte bei häufigem Betätigen (Oberflächenverschleiß) verändern, ist es sinnvoll, den Einfluß durch eine entsprechende Übersetzung gering zu halten. Typisch sind Kniehebellösungen, bei denen das Verhältnis der Hebelarmlängen zu den Durchmessern der Lagerachsen den Reibwerteinfluß bestimmen.
Bei einer magnetischen Auslösung (Kurzschlußfall) ist im Gegensatz hierzu ein möglichst schnelles Trennen der beiden Kontaktpartner voneinander notwendig, was mit einer herkömmlichen Kniehebellösung nicht hinreichend realisiert werden kann. Hier ist eine völlige Trennung der beiden Verklinkungspartner von Vorteil (freie Beweglichkeit des Kontaktes unbeeinflußt vom anderen Verklinkungspartner und damit geringere Massen, die beschleunigt werden müssen). Bestimmende Größe ist der Entklinkweg. Entklinkkraftschwankungen spielen in diesem Fall eine untergeordnete Rolle.A latching device of an electrical switch, in particular a circuit breaker, must meet different requirements for thermal and magnetic unlatching.
In order to achieve as constant a time as possible for thermal unlatching, the forces and distances required for this must remain as constant as possible (unlatching work remains constant). However, since the coefficients of friction and thus the unlatching forces change with frequent actuation (surface wear), it makes sense to keep the influence low by using an appropriate gear ratio. Typical are toggle lever solutions in which the ratio of the lever arm lengths to the diameters of the bearing axles determine the influence of the coefficient of friction.
In contrast, in the case of a magnetic release (short circuit), the two contact partners must be separated as quickly as possible, which cannot be adequately achieved with a conventional toggle lever solution. A complete separation of the two locking partners is advantageous here (free movement of the contact unaffected by the other locking partner and thus lower masses that have to be accelerated). The key factor is the release path. Unlatching force fluctuations play a minor role in this case.

Mit der in der Abbildung dargestellten Verklinkungseinrichtung sind für beide Auslösefälle (thermisch bei Überstrom und magnetisch bei Kurzschluß) ideale Bedingungen realisierbar, da bei einem langsamen Kraftanstieg P (thermische Entklinkung) am Klinkenhebel sich die die Verklinkung bewirkenden Teile, Klinkenhebel 2 und Klinkenhebelwiderlager 3, durch eine Drehbewegung an der Gelenkstelle 3A bis über die Totpunktlage hinaus entklinken. Die Reibungen in den Drehpunkten werden untersetzt und Änderungen dieser haben einen geringeren Einfluß (Kniehebeiprinzip). Ein sprungartiger Anstieg der Kraft P (Kurzschlußfall) bewirkt dagegen ein Abgleiten des Klinkenhebels 2 vom Klinkenhebelwiderlager 3 aufgrund der Massenträgheit des Klinkenhebelwiderlagers 3 und somit eine Entkopplung beider Teile (Prinzip einer Verrastung). Der Kontakthebel 4 kann sich unbeeinflußt und damit schneller bewegen. An der Gelenkstelle 3A des Kniehebelpaares, Klinkenhebel 2 und Klinkenhebelwiderlager 3, findet jetzt ein Abgleiten und keine Drehbewegung statt, was der wesentliche Inhalt der Erfindung ist.
Beim Einschaltvorgang wird der Klinkenhebel 2 durch die Einklinkkraft P1 gegen das Klinkenhebelwiderlager 3 bewegt, bis sich beide Teile, Klinkenhebel 2 und Klinkenhebelwiderlager 3, in der Übertotpunktlage stabilisieren.
Die Kraft P2 bewirkt im eingeschalteten Zustand des Schalters den Kontaktdruck an der Kontaktstelle 4A und halt im abgeschalteten Zustand des Schalters den Kontakthebel 4 in seiner Ausschaltstellung. Legende: 1 Schalthebel 2 Klinkenhebel 2A Schenkel 3 Klinkenhebelwiderlager 3A Gelenkstelle 3B Anschlag 4 Kontakthebel 4A Kontaktstelle P Entklinkkraft P1 Einklinkkraft P2 Kontaktkraft With the latching device shown in the figure, ideal conditions can be achieved for both tripping cases (thermal in the event of overcurrent and magnetic in the event of a short circuit), since with a slow increase in force P (thermal unlatching) on the ratchet lever, the parts causing the latching, ratchet lever 2 and ratchet lever abutment 3, through release a rotary movement at the articulation point 3A beyond the dead center position. The friction in the pivot points is reduced and changes to these have less influence (knee lifting principle). A sudden increase in the force P (short-circuit case), on the other hand, causes the latch lever 2 to slide off the latch lever abutment 3 due to the inertia of the latch lever abutment 3 and thus a decoupling of both parts (principle of latching). The contact lever 4 can move unaffected and thus move faster. At the articulation point 3A of the pair of toggle levers, ratchet lever 2 and ratchet lever abutment 3, there is now sliding and no rotational movement, which is the essential content of the invention.
When switching on, the latch lever 2 is moved by the latching force P1 against the latch lever abutment 3 until both parts, latch lever 2 and latch lever abutment 3, stabilize in the over-center position.
The force P2 causes the contact pressure at the contact point 4A in the switched-on state and holds the contact lever 4 in its switched-off position when the switch is switched off. Legend: 1 shift lever 2 ratchet levers 2A thigh 3 ratchet lever abutments 3A joint 3B stop 4 contact levers 4A contact point P release force P1 engagement force P2 contact force

Claims (3)

Verklinkungseinrichtung für einen elektrischen Schalter, insbesondere für einen Leitungsschutzschalter, mit einem Schalthebel (1), an dem schwenkbar ein Klinkenhebel (2) angelenkt ist, der mit dem am Kontakthebel (4) angeordneten Klinkenhebelwiderlager (3) ein Kniegelenk (2;3) bildet, durch das eine Übertotpunktlage bewirkt wird,
dadurch gekennzeichnet,
daß das Klinkenhebelwiderlager (3) an dem der Kontaktstelle (4A) gegenüberliegenden Arm des Kontakthebels (4) so gestaltet und schwenkbar befestigt ist, daß es eine Entklinkung durch eine Drehbewegung des Klinkenhebelwiderlagers (3) an seiner Gelenkstelle sowie eine Entklinkung durch Abgleiten des Klinkenhebels (2) zuläßt.Latching device for an electrical switch, in particular for a circuit breaker, with a switching lever (1) on which a ratchet lever (2) is pivotably articulated, which forms a knee joint (2; 3) with the ratchet lever abutment (3) arranged on the contact lever (4) , which causes an overdead position
characterized,
that the pawl lever abutment (3) on the arm of the contact lever (4) opposite the contact point (4A) is designed and pivoted so that it can be unlatched by rotating the pawl lever abutment (3) at its hinge point and unlatched by sliding the pawl lever ( 2) allows. Verklinkungseinrichtung für einen elektrischen Schalter nach Anspruch 1,
dadurch gekennzeichnet, daß bei der thermischen Entklinkung durch Überstrom ein langsamer Kraftanstieg P am Klinkenhebel (2) erfolgt, wobei sich die die Verklinkung bewirkenden Teile, Klinkenhebel (2) und Klinkenhebelwiderlager (3), durch eine Drehbewegung an der Gelenkstelle (3A) bis über die Totpunktlage hinaus entklinken, wobei die Reibung in der Gelenkstelle (3A) untersetzt wird und somit Änderungen der Reibung nur einen geringen Einfluß auf die Entklinkkraft haben. daß bei der magnetischen Entklinkung durch einen hohen Kurzschlußstrom ein sprungartiger Kraftanstieg erfolgt, wobei ein Abgleiten des Klinkenhebels (2) an der Gelenkstelle (3A) aufgrund der Massenträgheit des Klinkenhebelwiderlagers (3) und somit eine Entkopplung zwischen dem Klinkenhebel (2) und dem Klinkenhebelwiderlager (3) bewirkt wird und der Kontakthebel (4) sich dabei, unbeeinflußt von der Bewegung des Klinkenhebels (2), schneller bewegen kann. Latching device for an electrical switch according to claim 1,
characterized, that during thermal unlatching by overcurrent there is a slow increase in force P on the ratchet lever (2), the parts causing the latching, ratchet lever (2) and ratchet lever abutment (3), by a rotary movement at the articulation point (3A) beyond the dead center position Unlatch, the friction in the joint (3A) is reduced and changes in the friction have only a minor influence on the unlatching force. that during magnetic unlatching a sudden increase in force occurs due to a high short-circuit current, whereby the ratchet lever (2) slides at the articulation point (3A) due to the inertia of the ratchet lever abutment (3) and thus a decoupling between the ratchet lever (2) and the ratchet lever abutment ( 3) is effected and the contact lever (4) can move faster, unaffected by the movement of the ratchet lever (2). Verklinkungseinrichtung für einen elektrischen Schalter nach Anspruch 1, dadurch gekennzeichnet,
daß die Übertotpunktlage des Kniegelenks (2;3) durch den verlängerten Schenkel (2A) des Klinkenhebels (2) bestimmt wird, der sich am Anschlag (3B) des Klinkenhebelwiderlagers (3) abstützt.Latching device for an electrical switch according to claim 1, characterized in that
that the dead center position of the knee joint (2; 3) is determined by the extended leg (2A) of the ratchet lever (2), which is supported on the stop (3B) of the ratchet lever abutment (3).
EP20000119982 1999-09-18 2000-09-14 Latching device for a switch Expired - Lifetime EP1085551B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944824 1999-09-18
DE1999144824 DE19944824C1 (en) 1999-09-18 1999-09-18 Latch device for electric switch e.g. load protection switch has latch lever pivoted to switch lever and cooperating with pivot bearing provided by contact lever

Publications (3)

Publication Number Publication Date
EP1085551A2 true EP1085551A2 (en) 2001-03-21
EP1085551A3 EP1085551A3 (en) 2003-01-02
EP1085551B1 EP1085551B1 (en) 2004-02-11

Family

ID=7922511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000119982 Expired - Lifetime EP1085551B1 (en) 1999-09-18 2000-09-14 Latching device for a switch

Country Status (2)

Country Link
EP (1) EP1085551B1 (en)
DE (1) DE19944824C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104517782A (en) * 2014-11-28 2015-04-15 许继集团有限公司 Rotary shaft limit device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740770A (en) * 1985-10-31 1988-04-26 Merlin Gerin Operating mechanism for a low voltage electrical circuit breaker
DE4116454A1 (en) * 1991-05-18 1992-11-19 Licentia Gmbh MECHANISM FOR A SELF-SWITCH
DE19701470C1 (en) * 1997-01-17 1998-01-02 Geyer Ag Latching arrangement for automatic electrical cut=out switch

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1563781C3 (en) * 1966-12-08 1973-10-31 Siemens Ag, 1000 Berlin U. 8000 Muenchen Circuit breaker
DE3517748C1 (en) * 1985-05-17 1986-02-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Switching mechanism for a line protection circuit breaker
DE19507605C1 (en) * 1995-03-04 1996-08-22 Abb Patent Gmbh Snap-action latching mechanism for electrical switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740770A (en) * 1985-10-31 1988-04-26 Merlin Gerin Operating mechanism for a low voltage electrical circuit breaker
DE4116454A1 (en) * 1991-05-18 1992-11-19 Licentia Gmbh MECHANISM FOR A SELF-SWITCH
DE19701470C1 (en) * 1997-01-17 1998-01-02 Geyer Ag Latching arrangement for automatic electrical cut=out switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104517782A (en) * 2014-11-28 2015-04-15 许继集团有限公司 Rotary shaft limit device

Also Published As

Publication number Publication date
EP1085551B1 (en) 2004-02-11
EP1085551A3 (en) 2003-01-02
DE19944824C1 (en) 2001-02-01

Similar Documents

Publication Publication Date Title
DE3919458C2 (en) Door lock for electrical devices, especially tumble dryers
EP0242664B1 (en) Manually-operated electrical switch
DE69014741T2 (en) Electric switch actuation mechanism.
DE19944824C1 (en) Latch device for electric switch e.g. load protection switch has latch lever pivoted to switch lever and cooperating with pivot bearing provided by contact lever
EP0466287A2 (en) Circuit breaker with an independant locking device of the movable contact
EP0184652A2 (en) Switch with fuse
DE2804647A1 (en) THREE-PHASE OVERLOAD SWITCH WITH SWITCH LEVER
EP1284494B1 (en) Latch mechanism for a circuit breaker, particularly for a protective switch for a motor
WO2002041439A1 (en) Contact arrangement for current-limiting protective circuit breakers
DE2935420B1 (en) Electrical switch-off device, in particular an emergency pull-cable device
DE2808609A1 (en) LOW VOLTAGE TOGGLE SWITCH
EP2620971B1 (en) Switching unit for an electric switching device and electric switching device
EP1369884B1 (en) Disconnector for the galvanic isolation of conductor rails with contact cleaning
DE4404073A1 (en) Low-voltage circuit breaker with relative auxiliary switch
DE19507605C1 (en) Snap-action latching mechanism for electrical switch
DE10056821A1 (en) Contact set for current-limiting protection switch has rotatable switch shaft with rotary contact bridge acted on by contact force spring allowing contact wear compensation
DE19701470C1 (en) Latching arrangement for automatic electrical cut=out switch
EP0440953B1 (en) Reset lock for a relay
EP0502394B1 (en) Contact configuration
DE10261853B3 (en) Multi-pole power switch for 3-phase load, has feedback torque exerted on switch shaft by one switch pole reduced relative to feedback torque exerted on switch shaft by further switch pole
DE19735413A1 (en) Magnetic release device for safety switch and circuit breaker
EP1665317B1 (en) Electrical switch having latching surfaces that can be pivoted under the influence of electrodynamic force
DE19527045C2 (en) Contact arrangement for an electrical switching device
DE2851817A1 (en) Protection switch with locking member and intermediate latch - has single locking bolt for both working surfaces of locking member to simplify adherence to tolerances
DE3347097A1 (en) Protection circuit breaker

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030120

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): FR GB IT

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20040211

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040211

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040211

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20040211

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

EN Fr: translation not filed
26N No opposition filed

Effective date: 20041112