(19)

(11)

EP 4 739 559 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24836604.9 (22) Date of filing: 03.07.2024

(51) International Patent Classification (IPC):  B61B 12/02(2006.01) A63G 21/20(2006.01) B61B 7/00(2006.01) (52) Cooperative Patent Classification (CPC): A63G 21/20; A63G 21/22 (86) International application number: PCT/US2024/036835 (87) International publication number: WO 2025/010385 (09.01.2025 Gazette 2025/02)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 04.07.2023 US 202363511890 P (71) Applicant: Pyramide USA Inc Frederick, MD 21705 (US)	(72) Inventors: MOY, Russell I. Frederick, MD 21705 (US) SALZMAN, Alexander T. Frederick, MD 21705 (US) (74) Representative: Script Intellectual Property LLP  Suite J, Anchor House School Close Chandlers Ford Eastleigh, Hampshire SO53 4DY Eastleigh, Hampshire SO53 4DY (GB)