(19)
(11) EP 3 884 138 A1

(12)

(43) Date of publication:
29.09.2021 Bulletin 2021/39

(21) Application number: 19827811.1

(22) Date of filing: 20.11.2019
(51) International Patent Classification (IPC): 
E21D 11/28(2006.01)
(52) Cooperative Patent Classification (CPC):
E21D 11/28
(86) International application number:
PCT/IB2019/059983
(87) International publication number:
WO 2020/104966 (28.05.2020 Gazette 2020/22)
(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: 22.11.2018 IT 201800010509

(71) Applicant: Officine Maccaferri S.p.A.
40069 Zola Predosa (BO) (IT)

(72) Inventors:
  • CULLACIATI, Alfredo
    61043 Cagli (PU) (IT)
  • FERRAIOLO, Francesco
    40050 Ca' de' Fabbri (BO) (IT)

(74) Representative: Provvisionato, Paolo 
Provvisionato & Co S.r.l. Piazza di Porta Mascarella 7
40126 Bologna
40126 Bologna (IT)

   


(54) SUPPORT RIB OF AN EXCAVATION AND METHOD FOR PRODUCING A SUPPORT STRUCTURE INSIDE AN EXCAVATION