(19)
(11) EP 3 728 858 A1

(12)

(43) Date of publication:
28.10.2020 Bulletin 2020/44

(21) Application number: 18829446.6

(22) Date of filing: 19.12.2018
(51) International Patent Classification (IPC): 
F04D 19/04(2006.01)
F04D 29/70(2006.01)
(86) International application number:
PCT/GB2018/053689
(87) International publication number:
WO 2019/122873 (27.06.2019 Gazette 2019/26)
(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
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 21.12.2017 GB 201721671

(71) Applicant: Edwards Limited
Burgess Hill, Sussex RH15 9TW (GB)

(72) Inventors:
  • BAILEY, Christopher Mark
    Burgess Hill, Sussex RH15 9TW (GB)
  • SCHOFIELD, Nigel Paul
    Burgess Hill, Sussex RH15 9TW (GB)
  • GRAHAM, Michael Colin
    Clevedon, Somerset BS21 6TH (GB)
  • SEELEY, Andrew
    Clevedon, Somerset BS21 6TH (GB)

(74) Representative: Norton, Ian Andrew 
Edwards Limited Innovation Drive Burgess Hill
West Sussex RH15 9TW
West Sussex RH15 9TW (GB)

   


(54) A VACUUM PUMPING ARRANGEMENT