(19)

(11)

EP 3 803 261 A1

(12)

(43) Date of publication: 14.04.2021 Bulletin 2021/15 (21) Application number: 19739863.9 (22) Date of filing: 12.06.2019

(51) International Patent Classification (IPC):  F42B 1/024(2006.01) F42B 1/028(2006.01) (86) International application number: PCT/BG2019/000011 (87) International publication number: WO 2019/232597 (12.12.2019 Gazette 2019/50)

(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: 07.06.2018 BG 11274818 (71) Applicant: TRANSARMORY Ltd. 1517 Sofia (BG)	(72) Inventors: PETKOV, Stancho Petkov 4330 Sopot (BG) IVANOV, Dobrin Ivanov 1408 Sofia (BG) (74) Representative: Neykov, Neyko Hristov  NIKOPATENT S.A. 58, Vorino Street App. 2 1680 Sofia 1680 Sofia (BG)