(19)

(11)

EP 4 171 881 A1

(12)

(43) Date of publication: 03.05.2023 Bulletin 2023/18 (21) Application number: 20943423.2 (22) Date of filing: 29.06.2020

(51) International Patent Classification (IPC):  B25B 21/02(2006.01) B25D 17/06(2006.01) B25D 17/00(2006.01) F16H 33/02(2006.01) (52) Cooperative Patent Classification (CPC): F16H 33/02; B25B 21/02 (86) International application number: PCT/CA2020/050901 (87) International publication number: WO 2022/000067 (06.01.2022 Gazette 2022/01)

(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 (71) Applicant: Grand, Gérard St. Catharines, ON L2T 3N3 (CA)	(72) Inventor: Grand, Gérard St. Catharines, ON L2T 3N3 (CA) (74) Representative: Murgitroyd & Company  Murgitroyd House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)