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(11)

EP 4 577 754 A1

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(43) Date of publication: 02.07.2025 Bulletin 2025/27 (21) Application number: 23855919.9 (22) Date of filing: 13.07.2023

(51) International Patent Classification (IPC):  F16F 15/04(2006.01) H04R 1/02(2006.01) F16F 15/08(2006.01) (52) Cooperative Patent Classification (CPC): F16F 15/08; H04R 1/026; H04R 2201/021; H04R 2201/025; H04R 1/2896 (86) International application number: PCT/CA2023/050937 (87) International publication number: WO 2024/040330 (29.02.2024 Gazette 2024/09)

(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: KH MA MD TN (30) Priority: 25.08.2022 US 202217895302 (71) Applicant: D Morrison Consulting Inc Markham ON L3P 4G6 (CA)	(72) Inventor: MORRISON, David Markham, Ontario L3P 4G6 (CA) (74) Representative: Raffay & Fleck  Patentanwälte Stephansplatz 2-6 20354 Hamburg 20354 Hamburg (DE)