(19)
(11) EP 4 204 631 A1

(12)

(43) Date of publication:
05.07.2023 Bulletin 2023/27

(21) Application number: 21742424.1

(22) Date of filing: 15.07.2021
(51) International Patent Classification (IPC): 
E02F 9/22(2006.01)
E02F 3/43(2006.01)
 F15B 20/00(2006.01)
E02F 9/20(2006.01)
(52) Cooperative Patent Classification (CPC):
E02F 9/2267; E02F 9/226; F15B 20/00; E02F 9/2282; E02F 3/431; E02F 9/2095; F15B 2211/85; F15B 21/005; F15B 2211/7135; F15B 2211/3059; F15B 2211/31588
(86) International application number:
PCT/EP2021/069684
(87) International publication number:
WO 2022/013327 (20.01.2022 Gazette 2022/03)
(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: 17.07.2020 IT 202000017416

(71) Applicant: CNH Industrial Italia S.p.A.
10156 Torino (IT)

(72) Inventors:
  • GARRAMONE, Adriano
    73100 Lecce (IT)
  • GRAVILI, Andrea
    CAP 73100 Lecce (IT)
  • LIBERTI, Stefano
    73100 Lecce (IT)
  • VENEZIA, Antonio
    10153 Torino (IT)

(74) Representative: CNH Industrial IP Department 
Leon Claeysstraat 3A
8210 Zedelgem
8210 Zedelgem (BE)

   


(54) METHOD AND SYSTEM FOR RELEASING THE RESIDUAL PRESSURE OF A HYDRAULIC CIRCUIT OF A WORK MACHINE AND WORK MACHINE INCLUDING THE SYSTEM