(19)

(11)

EP 3 682 074 A1

(12)

(43) Date of publication: 22.07.2020 Bulletin 2020/30 (21) Application number: 18853991.0 (22) Date of filing: 09.03.2018

(51) International Patent Classification (IPC):  E05B 37/22(2006.01) E05B 67/00(2006.01) E05B 49/02(2006.01) (86) International application number: PCT/CN2018/078587 (87) International publication number: WO 2019/047494 (14.03.2019 Gazette 2019/11)

(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: 11.09.2017 US 201715700502 (71) Applicant: The Sun Lock Company Ltd. Tuen Mun, N.T., Hong Kong (CN)	(72) Inventor: LAI, Karl New Territories Hong Kong (HK) (74) Representative: Prugneau, Philippe  Cabinet Prugneau - Schaub 3, avenue Doyen Louis Weil Le Grenat - Europole 38000 Grenoble 38000 Grenoble (FR)