(19)

(11)

EP 3 675 680 A1

(12)

(43) Date of publication: 08.07.2020 Bulletin 2020/28 (21) Application number: 18858557.4 (22) Date of filing: 18.09.2018

(51) International Patent Classification (IPC):  A44B 19/30(2006.01) E05B 65/52(2006.01) B65D 33/25(2006.01) (86) International application number: PCT/CA2018/051162 (87) International publication number: WO 2019/056094 (28.03.2019 Gazette 2019/13)

(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: 19.09.2017 US 201762560338 P (71) Applicant: Highcroft Inc. Calgary, AB T2E 5J8 (CA)	(72) Inventor: MATCHETT, Michael, Kenneth Calgary, Alberta T2E 5J8 (CA) (74) Representative: Williams Powell  11 Staple Inn London WC1V 7QH London WC1V 7QH (GB)