(19)

(11)

EP 3 469 806 A1

(12)

(43) Date of publication: 17.04.2019 Bulletin 2019/16 (21) Application number: 17810930.2 (22) Date of filing: 07.06.2017

(51) International Patent Classification (IPC):  H04R 1/02(2006.01) E04B 9/00(2006.01) F16M 13/02(2006.01) E04B 9/06(2006.01) (86) International application number: PCT/US2017/036334 (87) International publication number: WO 2017/214263 (14.12.2017 Gazette 2017/50)

(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: 08.06.2016 US 201615177157 (71) Applicant: Porciatti, Silvio Pembroke, MA 02359 (US)	(72) Inventor: Porciatti, Silvio Pembroke, MA 02359 (US) (74) Representative: Williams Powell  11 Staple Inn London WC1V 7QH London WC1V 7QH (GB)