(19)

(11)

EP 3 449 072 A1

(12)

(43) Date of publication: 06.03.2019 Bulletin 2019/10 (21) Application number: 17790173.3 (22) Date of filing: 24.04.2017

(51) International Patent Classification (IPC):  E04H 15/60(2006.01) F16B 7/04(2006.01) (86) International application number: PCT/US2017/029065 (87) International publication number: WO 2017/189399 (02.11.2017 Gazette 2017/44)

(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: MA MD (30) Priority: 27.04.2016 US 201662328199 P (71) Applicant: Cascade Designs, Inc. Seattle, Washington 98134 (US)	(72) Inventor: HITCH, Philip Ryun Bainbridge Island, Washington 98110 (US) (74) Representative: Small, Gary James  Carpmaels & Ransford LLP One Southampton Row London WC1B 5HA London WC1B 5HA (GB)