(19)
(11) EP 3 721 459 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
05.01.2022 Bulletin 2022/01

(45) Mention of the grant of the patent:
01.12.2021 Bulletin 2021/48

(21) Application number: 18756487.7

(22) Date of filing: 13.07.2018
(51) International Patent Classification (IPC): 
H01F 27/14(2006.01)
 F16H 57/04(2010.01)
(52) Cooperative Patent Classification (CPC):
F16H 57/0476; H01F 27/14
(86) International application number:
PCT/IB2018/055187
(87) International publication number:
WO 2019/111064 (13.06.2019 Gazette 2019/24)

(54)

OIL FILLED ELECTRICAL EQUIPMENT COMPRISING AN ASSEMBLY WITH A CYLINDRICAL BELLOW FOR PRESSURE AND VOLUME COMPENSATION

ÖLGEFÜLLTE ELEKTRISCHE VORRICHTUNG, BESTEHEND AUS EINER BAUGRUPPE MIT EINEM ZYLINDRISCHEN BALG ZUM DRUCK- UND VOLUMENAUSGLEICH

ÉQUIPEMENT ÉLECTRIQUE REMPLI D'HUILE COMPRENANT UN ENSEMBLE AVEC UN SOUFFLET CYLINDRIQUE POUR LA COMPENSATION DE PRESSION ET DE VOLUME

(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 08.12.2017 IN 201741044109

(43) Date of publication of application:
14.10.2020 Bulletin 2020/42

(73) Proprietor: Hitachi Energy Switzerland AG
5400 Baden (CH)

(72) Inventors:
  • RATHOD, Yogesh Bhikhabhai
    Vadodara 390002 (IN)
  • JOSHI, Ankit Atulkumar
    Vadodara 390006 (IN)
  • CHAUHAN, Kalpesh Ishwarbhai
    Vadodara 390006 (IN)

(74) Representative: Michalski Hüttermann & Partner Patentanwälte mbB 
Speditionstraße 21
40221 Düsseldorf
40221 Düsseldorf (DE)


(56) References cited: : 
CN-A- 107 221 412
CN-Y- 201 007 938
 CN-Y- 2 209 380
GB-A- 425 169
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).