(19)
(11) EP 3 775 476 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:
28.12.2022 Bulletin 2022/52

(45) Mention of the grant of the patent:
23.11.2022 Bulletin 2022/47

(21) Application number: 19781714.1

(22) Date of filing: 08.04.2019
(51) International Patent Classification (IPC): 
E21B 33/04(2006.01)
E21B 33/10(2006.01)
F16J 15/06(2006.01)
 E21B 33/03(2006.01)
E21B 33/128(2006.01)
F16J 15/08(2006.01)
(52) Cooperative Patent Classification (CPC):
E21B 33/04; E21B 2200/01
(86) International application number:
PCT/US2019/026282
(87) International publication number:
WO 2019/195825 (10.10.2019 Gazette 2019/41)

(54)

PRESSURE ENERGIZED SEAL ACTUATOR RING

BETÄTIGERRING FÜR DRUCKGESPANNTE DICHTUNG

BAGUE D'ACTIONNEUR DE JOINT D'ÉTANCHÉITÉ ACTIVÉ PAR PRESSION

(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: 06.04.2018 US 201862654010 P

(43) Date of publication of application:
17.02.2021 Bulletin 2021/07

(73) Proprietor: Baker Hughes Pressure Control LP
Houston TX 77041 (US)

(72) Inventors:
  • CHENG, Samuel, Heung Yeung
    Houston, TX 77041 (US)
  • HE, Wei
    Houston, TX 77041 (US)
  • O'DELL, Kevin
    Houston, TX 77041 (US)
  • PALLINI, Joseph
    Houston, TX 77041 (US)

(74) Representative: Novagraaf Group 
Chemin de l'Echo 3
1213 Onex/ Geneva
1213 Onex/ Geneva (CH)


(56) References cited: : 
EP-A1- 0 495 274
US-A- 4 665 979
US-A- 4 742 874
US-A- 5 285 853
US-A1- 2010 116 489
 GB-A- 2 299 104
US-A- 4 719 971
US-A- 5 067 734
US-A- 5 285 853
US-B1- 6 367 558
   
       
    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).