EP0308616B1 - Groupe de propulsion pour véhicules ferroviaires - Google Patents

Groupe de propulsion pour véhicules ferroviaires Download PDF

Info

Publication number
EP0308616B1
EP0308616B1 EP88111898A EP88111898A EP0308616B1 EP 0308616 B1 EP0308616 B1 EP 0308616B1 EP 88111898 A EP88111898 A EP 88111898A EP 88111898 A EP88111898 A EP 88111898A EP 0308616 B1 EP0308616 B1 EP 0308616B1
Authority
EP
European Patent Office
Prior art keywords
coupling
motor
axle
drive
wheel
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.)
Revoked
Application number
EP88111898A
Other languages
German (de)
English (en)
Other versions
EP0308616A2 (fr
EP0308616A3 (en
Inventor
Johann Eichinger
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.)
Hurth Getriebe und Zahnraeder GmbH
Original Assignee
Hurth Getriebe und Zahnraeder GmbH
Carl Hurth Maschinen und Zahnradfabrik GmbH and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6336389&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0308616(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hurth Getriebe und Zahnraeder GmbH, Carl Hurth Maschinen und Zahnradfabrik GmbH and Co filed Critical Hurth Getriebe und Zahnraeder GmbH
Priority to AT88111898T priority Critical patent/ATE74083T1/de
Publication of EP0308616A2 publication Critical patent/EP0308616A2/fr
Publication of EP0308616A3 publication Critical patent/EP0308616A3/de
Application granted granted Critical
Publication of EP0308616B1 publication Critical patent/EP0308616B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
    • B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/44—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with hollow transmission shaft concentric with wheel axis

Definitions

  • the invention relates to a so-called parallel shaft drive unit for rail vehicles according to the preamble of the main claim. It is based on a state of the art, e.g. is known from EP-A-0 137 931.
  • the screwed housing of the motor and transmission are supported at two points on the bogie frame.
  • a prestressed rubber ring is arranged between the output shaft of the transmission, which is designed as a hollow shaft, and the axle of the wheelset.
  • the elastic coupling that drives the hollow shaft to the axle of the wheelset is used exclusively for torque transmission. If the rubber ring on the side of the gearbox, i.e. On the opposite side of the gearbox from the elastic coupling, the suspension properties are quite satisfactory, but the space requirement is considerable. However, if the rubber ring is arranged within the actual gearbox, no additional space is required, but the suspension properties leave much to be desired due to the then considerably smaller diameter of the rubber ring.
  • the rubber is predominantly subjected to thrust by the weight and the inertial forces occurring during driving operation, in a plane perpendicular to the axle of the wheelset.
  • the rubber washer In order not to let the drive unit sag too much with respect to the axle of the wheelset, the rubber washer must be relatively narrow and hard. However, this increases the negative effects of the shear stress and further worsens the spring action in the transverse direction, that is, in the direction of the axle of the wheelset. (Another very important disadvantage is that if the rubber washers have to be replaced, the wheels have to be pulled off the axles.)
  • the suspension of the drive unit according to the US patent is only a 2-point suspension with a cross stabilizer. Since the latter should not only absorb the forces and movements mentioned above while driving, but also must secure the motor-gear unit against tipping in the rest position, the rubber disks mentioned must not be particularly soft. As a result, however, they are again not very suitable for absorbing the movements originating from the axle of the wheelset.
  • a motor-transmission unit is also known (EP-B-0 010-619), in which the screwed housing of the motor and transmission are rigidly attached to the bogie frame.
  • a complex clutch unit is provided, in which the hollow transmission shaft is connected to the wheelset axle via a first clutch, a cardan hollow shaft and a second clutch. Since the relative movements between the gearbox hollow shaft and the axle of the gear set are considerable, a corresponding free space must be provided which adversely affects the dimensions of the gearbox hollow shaft and its bearings and thus the size of the gearbox housing. Such a drive unit can therefore hardly be used for low-floor vehicles.
  • the invention is therefore based on the object of developing the drive unit of the type mentioned in such a way that, with the greatest possible comfort in terms of suspension and shock absorption, its space requirement is as small as possible and it can therefore also be used in vehicles of the low-floor type.
  • a drive unit which has the characterizing part of claim 1.
  • This design allows the diameter of the gearbox hollow shaft to be reduced, which allows the use of smaller bearings and thus a smaller housing.
  • Star, articulated or similar couplings which are effective in three planes and which permit an angular offset are known in rail vehicles. You can compensate for all relative movements between the wheelset axle and the engine-gearbox unit. (The specification "simple” is not a synonym for "primitive” or the like, but indicates the structural difference from the "double” articulated coupling used in EP-B-0 010 619.)
  • the two essentially vertically acting support points apart from some of the weight forces and the motor reaction torque, they only have to absorb small lateral forces resulting from driving. All other forces, moments and movements are absorbed and transmitted by the - actually - elastic coupling.
  • the prior art cannot offer any suggestion for this solution.
  • EP-B-0 010 619 also does not have a clutch with the properties mentioned in claim 1, but a rubber disc clutch. It has already been stated above in connection with US-A-3 152 558 that this type of coupling is disadvantageous for the present application.
  • an expedient embodiment is shown in claim 2.
  • an embodiment according to claim 3 is useful.
  • an eccentric arrangement of the elastic coupling or its arrangement on the side of the transmission facing away from the motor would have been more expedient with regard to the weight distribution or the forces to be absorbed by the transverse stabilizer.
  • a brake disc is often attached to the axle of the wheelset.
  • the associated brake shoes and their actuation mechanism are arranged on the bogie frame.
  • the change in position of the brake disc relative to the brake shoes due to the relative movements between the axle of the bogie and the bogie frame requires complex structural measures to ensure a reliable effect of the brake.
  • the brake arrangement can be significantly simplified since the brake disc and brake shoes always remain in the same position with respect to one another.
  • a single-stage gearbox can also be used with the appropriate gear ratio.
  • the hollow shaft (13) like the shaft (12) (and possibly the pinion 8), can be rotated with roller bearings (not shown) but cannot be displaced axially in the housing (14) of the transmission (5) and protrudes on one side the housing (14) out.
  • a first flange (18) is fixedly connected to the hollow shaft. and a second flange (19) is fixedly connected to the axle of the wheel set, and an intermediate member (20) that is not supported is provided between them.
  • the first flange (18) is articulated to the intermediate link (20) via the control arm (21) and the second flange (19) via the control arm (22).
  • bolts (23) are fastened to the flanges (18, 19) and to the intermediate link (20), on which the handlebar levers (21, 22) are mounted by means of known and therefore not shown elastic members, so-called rubber joints.
  • a four-link chain is formed from the first flange (18), the link arms (21) and the intermediate link (20), and a further four-link chain is formed from the intermediate link (20), the link levers (22) and the second flange (19). Since the intermediate link (20) connecting the two four-link chains is not supported, the coupling can compensate for the radial movements between the sprung parts (positions 4, 5, 18) and the unsprung parts (positions 3, 15, 16, 19).
  • the articulated coupling (17) also serves to support the motor-gear unit (6) on the axle set (3). It is expedient if the articulated coupling (17) is at least approximately in the middle between the driving wheels (15, 16), i.e. in the longitudinal axis (24) of the vehicle, because then when driving over bumps in the track, switches, etc., there is no one-sided load on the wheelset axis (3) are exerted on the articulated coupling, which in turn cause restoring forces.
  • Two additional support points (25, 26) are provided for supporting mass acceleration forces and tilting moments.
  • the motor (4) and / or the gear housing (14) is elastically supported on the bogie frame (2) or suspended by means of a vertical control arm (not shown).
  • the brake disc (28) of a disc brake (27) is also arranged on the axle (3) between the articulated coupling (17) and the adjacent drive wheel (15).
  • the actuating device with the brake shoe (29) are attached to the bogie frame (2).
  • a star coupling (30) is shown in FIG. 2 as an example for another coupling.
  • a first coupling half (31) is fixedly connected to the hollow shaft (13).
  • a second coupling half (32) is fixed in a rotationally fixed manner on the axle set (3).
  • Both coupling halves (31, 32) have radially outwardly directed arms which are alternately one behind the other in the circumferential direction. Rubber blocks (not shown) are arranged between two arms, which bear against the arms under prestress.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Of Transmissions (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Claims (4)

  1. Unité de traction pour véhicules ferroviaires avec une unité moteur-transmission (6) logée dans un bogie (1) et constituée par un moteur de traction (4) dont l'axe est parallèle à un essieu de jeu de roues (3) et par une transmission par roues dentées droites (5), couplée à l'arbre de sortie de ce moteur et solidaire du carter de ce moteur, transmission qui comporte côté sortie, un arbre creux (13) entourant en pratique concentriquement à une certaine distance radiale, l'essieu de jeu de roues (3) qui est relié à cet essieu de jeu de roues (3) par l'intermédiaire d'une unité d'accouplement élastique (17, 30), tandis que l'unité de traction prend élastiquement appui en trois points sur le bogie (1) et que l'unité moteur-transmission (6) prend appui, en pratique verticalement, sur le châssis du bogie (1) en deux points (25, 26) distants l'un de l'autre, unité de traction caractérisée en ce que l'unité d'accouplement élastique (17, 30) revêtant la forme d'un simple accouplement en étoile (30), à articulation (17) ou analogue, permettant un décalage angulaire, des déplacements radiaux dans une direction quelconque et de légers déplacements axiaux entre l'essieu de jeu de roues (3) et l'arbre creux (13), constitue le troisième point d'appui.
  2. Unité de traction selon la revendication 1, caractérisée en ce que l'accouplement élastique (17, 30) est disposé sur le côté de la transmission (5) tourné vers le moteur (4).
  3. Unité de traction selon la revendication 2, caractérisée en ce que l'accouplement élastique (17, 30), vu dans la direction de déplacement du véhicule, est placé tout au moins approximativement au milieu de ce véhicule (axe longitudinal 24).
  4. Unité de traction selon une des revendications 1 à 3, caractérisée en ce que l'extrémité de l'arbre creux (13) opposée à l'accouplement élastique (17, 30) porte un disque de frein (28) pour un frein du véhicule rapporté sur l'unité moteur-transmission.
EP88111898A 1987-09-19 1988-07-23 Groupe de propulsion pour véhicules ferroviaires Revoked EP0308616B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88111898T ATE74083T1 (de) 1987-09-19 1988-07-23 Antriebsaggregat fuer schienenfahrzeuge.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3731546 1987-09-19
DE19873731546 DE3731546A1 (de) 1987-09-19 1987-09-19 Antriebsaggregat fuer schienenfahrzeuge

Publications (3)

Publication Number Publication Date
EP0308616A2 EP0308616A2 (fr) 1989-03-29
EP0308616A3 EP0308616A3 (en) 1989-11-29
EP0308616B1 true EP0308616B1 (fr) 1992-03-25

Family

ID=6336389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111898A Revoked EP0308616B1 (fr) 1987-09-19 1988-07-23 Groupe de propulsion pour véhicules ferroviaires

Country Status (3)

Country Link
EP (1) EP0308616B1 (fr)
AT (1) ATE74083T1 (fr)
DE (2) DE3731546A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107719387A (zh) * 2017-09-04 2018-02-23 中车大连机车车辆有限公司 低轴重高速动车转向架驱动装置
US20230132924A1 (en) * 2020-11-24 2023-05-04 Crrc Qingdao Sifang Co., Ltd. Rail vehicle and bogie
WO2023186725A1 (fr) * 2022-03-30 2023-10-05 Siemens Mobility Austria Gmbh Châssis pour véhicules ferroviaires

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216586A1 (de) * 1992-05-20 1993-11-25 Helmuth Haack Gleichstromtriebzug für Wendezugbetrieb
DE102010049764B4 (de) * 2010-10-29 2019-05-02 Siemens Aktiengesellschaft Achsgetriebe eines Schienenfahrzeugs
DE102011011867A1 (de) 2011-02-21 2012-08-23 Voith Patent Gmbh Getriebe für einen Schienfahrzeugantriebsstrang
AT514023B1 (de) 2013-03-06 2015-04-15 Siemens Ag Oesterreich Fahrwerk für Schienenfahrzeuge
EP3020611A1 (fr) 2014-11-14 2016-05-18 Siemens Aktiengesellschaft Entraînement ferroviaire doté d'un dispositif de freinage
CN104802810A (zh) * 2015-05-25 2015-07-29 南车戚墅堰机车有限公司 采用电机空心轴轮对驱动装置的机车转向架
US11318965B2 (en) * 2018-12-27 2022-05-03 Bombardier Transportation Gmbh Locomotive bogie having an anti-pitching geometry
RU200670U1 (ru) * 2020-03-11 2020-11-05 Андрей Сергеевич Космодамианский Тяговый привод локомотива
KR102304283B1 (ko) * 2020-11-10 2021-09-24 (주)성신알에스티 배터리에 의해 구동되는 철도차량용 대차
CN114162148A (zh) * 2021-12-03 2022-03-11 中车唐山机车车辆有限公司 紧凑式驱动装置、转向架及轨道车辆

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT118694B (de) * 1929-02-25 1930-07-25 Bbc Ag Oesterr Antrieb für elektrische Gleisfahrzeuge.
DE838452C (de) 1949-12-06 1952-05-08 Duesseldorfer Waggonfabrik Ag Elektrischer Antrieb fuer zweiachsige Strassenbahn-Triebgestelle, deren Radsaetze von nur einem auf den Radsaetzen gelagerten Motor ueber fest am Motor gelagerte Winkelgetriebe angetrieben werden
DE914017C (de) * 1952-11-14 1954-06-24 Rudolf Ahrens Kupplung der Hohlwelle mit den Treibraedern von Schienenfahrzeugen mit festen Tragachsen und losen Raedern
US3152558A (en) * 1962-08-23 1964-10-13 Westinghouse Electric Corp Traction power unit suspension
DE1947150U (de) * 1963-07-17 1966-10-06 Westinghouse Electric Corp Elektrisches triebfahrzeug, insbesondere schienentriebfahrzeug.
DE6750770U (de) * 1968-07-16 1969-01-16 Rheinstahl Huettenwerke Ag Doppelachsantrieb fuer schienenfahrzeuge
DE1921565A1 (de) * 1969-04-28 1970-10-29 Tuerk & Hillinger Kg Elektrisches Heizelement fuer Nachtstromspeicheroefen
DE2106662C3 (de) * 1971-02-12 1981-07-23 Brown, Boveri & Cie Ag, 6800 Mannheim Antrieb für elektrische Triebfahrzeuge
FR2237792B1 (fr) * 1973-07-19 1976-04-30 Creusot Loire
DE2451688C2 (de) * 1974-10-31 1976-08-05 Orenstein & Koppel Ag Antrieb fuer Drehgestelle
DE2843830A1 (de) * 1978-10-07 1980-04-17 Bbc Brown Boveri & Cie Antriebsanordnung fuer elektrisches triebfahrzeug
DE2848106A1 (de) * 1978-11-06 1980-05-14 Thyssen Industrie Elektromotor-getriebe-aggregat fuer den antrieb von schienenfahrzeugen wie strassenbahnen o.dgl.
DE3047412A1 (de) * 1980-12-17 1982-07-15 Thyssen Industrie Ag, 4300 Essen Anordnung von scheibenbremsen an einem schienenfahrzeug
DE3479992D1 (en) 1983-10-17 1989-11-09 Hurth Masch Zahnrad Carl Drive unit for railway vehicles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107719387A (zh) * 2017-09-04 2018-02-23 中车大连机车车辆有限公司 低轴重高速动车转向架驱动装置
US20230132924A1 (en) * 2020-11-24 2023-05-04 Crrc Qingdao Sifang Co., Ltd. Rail vehicle and bogie
US11827251B2 (en) * 2020-11-24 2023-11-28 Crrc Qingdao Sifang Co., Ltd. Rail vehicle and bogie
WO2023186725A1 (fr) * 2022-03-30 2023-10-05 Siemens Mobility Austria Gmbh Châssis pour véhicules ferroviaires

Also Published As

Publication number Publication date
EP0308616A2 (fr) 1989-03-29
DE3869532D1 (de) 1992-04-30
DE3731546A1 (de) 1989-04-06
ATE74083T1 (de) 1992-04-15
EP0308616A3 (en) 1989-11-29

Similar Documents

Publication Publication Date Title
EP0308616B1 (fr) Groupe de propulsion pour véhicules ferroviaires
DE3019468A1 (de) Fahrwerk fuer eisenbahnfahrzeuge
EP3272614B1 (fr) Train de roulement pour un véhicule sur rail
EP2569197B1 (fr) Système d'entraînement pour véhicules sur rails
DE4106070C2 (fr)
EP1685014B1 (fr) Chassis propulse pour vehicules sur rails, en particulier pour boggies de vehicules a plancher bas
EP0137931B1 (fr) Unité de traction pour véhicule ferroviaire
EP0649782B1 (fr) Véhicule ferroviaire et train de roulement pour un tel véhicule
EP1276653B1 (fr) Train de roulement pour vehicule sur rails
WO2009144319A1 (fr) Bogie à châssis séparé et unité de couplage moteur-transmission
EP2089263B1 (fr) Train de roulement pour un véhicule ferroviaire
DE1924814A1 (de) Antrieb fuer zwei- oder mehrachsige Triebdrehgestelle von Schienenfahrzeugen
DE2106662C3 (de) Antrieb für elektrische Triebfahrzeuge
DE19703701C2 (de) Zweiachsiges Fahrwerk für schienengebundene Transportsysteme
EP1532033B1 (fr) Bogie moteur pour un vehicule sur rails
DE2837302C2 (fr)
DE2843830A1 (de) Antriebsanordnung fuer elektrisches triebfahrzeug
DE1291352B (de) Laufwerk fuer Schienenfahrzeuge mit zwanglaeufiger Lenkung der Radsaetze
EP0658465A1 (fr) Bogie auto-directeur à trois essieux pour un véhicule ferroviaire
DE2756445A1 (de) Doppelachsantrieb fuer drehgestelle von schienenfahrzeugen
EP2939898B1 (fr) Boggie pour véhicules sur rails ayant trois essieux montés
CH631664A5 (en) Rail vehicle with bogies having at least two wheel sets
DE2929896A1 (de) Schienenfahrzeug mit einem fahrzeugkasten und zwei drehgestellen
DE2514361A1 (de) Fahrgestell fuer ein schienenfahrzeug
DE2709967A1 (de) Triebfahrzeug, insbesondere schienentriebfahrzeug

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 CH DE FR GB IT LI

ITCL It: translation for ep claims filed

Representative=s name: BARZANO' E ZANARDO ROMA S.P.A.

EL Fr: translation of claims filed
PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19891017

17Q First examination report despatched

Effective date: 19900830

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HURTH GETRIEBE UND ZAHNRAEDER G.M.B.H.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI

REF Corresponds to:

Ref document number: 74083

Country of ref document: AT

Date of ref document: 19920415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3869532

Country of ref document: DE

Date of ref document: 19920430

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920629

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19920630

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920713

Year of fee payment: 5

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920720

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920722

Year of fee payment: 5

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: SIEMENS AG GR PA 2 ERL S

Effective date: 19921222

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

Ref country code: GB

Effective date: 19930723

Ref country code: AT

Effective date: 19930723

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930731

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930723

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

Ref country code: FR

Effective date: 19940331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19940401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19940620