(19)

(11)

EP 3 931 470 A1

(12)

(43) Date of publication: 05.01.2022 Bulletin 2022/01 (21) Application number: 20714277.9 (22) Date of filing: 26.02.2020

(51) International Patent Classification (IPC):  F16J 1/18(2006.01) C23C 8/26(2006.01) C22C 38/04(2006.01) C22C 38/22(2006.01) C22C 38/40(2006.01) F16J 7/00(2006.01) C22C 21/02(2006.01) F02F 3/00(2006.01) C22C 38/18(2006.01) C22C 38/24(2006.01) C22C 38/44(2006.01) F16J 1/04(2006.01) (52) Cooperative Patent Classification (CPC): F16J 9/00; F16J 9/22; C22C 38/04; F16J 9/26; F02F 3/00; C23C 8/38; C23C 8/26; C23C 8/24; C22C 38/22; C22C 38/44; C22C 38/18; C22C 38/40; C22C 21/02; C22C 38/24; C23C 8/36 (86) International application number: PCT/IB2020/051658 (87) International publication number: WO 2020/174427 (03.09.2020 Gazette 2020/36)

(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: 27.02.2019 IT 201900002849 (71) Applicant: Asso Werke S.r.l. Unipersonale 56012 Calcinaia (PI) (IT)	(72) Inventor: ANGUILLESI, Dimitri 56012 Calcinaia (PI) (IT) (74) Representative: Primiceri, Maria Vittoria et al Praxi Intellectual Property S.p.A. Via Leonida Bissolati, 20 00187 Roma 00187 Roma (IT)