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(11)

EP 3 331 671 A1

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(43) Date of publication: 13.06.2018 Bulletin 2018/24 (21) Application number: 16833884.6 (22) Date of filing: 04.08.2016

(51) International Patent Classification (IPC):  B26B 21/22(2006.01) B26B 21/14(2006.01) B26B 21/08(2006.01) B26B 21/52(2006.01) (86) International application number: PCT/US2016/045591 (87) International publication number: WO 2017/024156 (09.02.2017 Gazette 2017/06)

(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: 05.08.2015 US 201562201551 P 02.10.2015 US 201514873857 21.12.2015 US 201514977560 21.04.2016 US 201615135485 (71) Applicant: Robertson, Ruairidh Sandwich, Massachusetts 02563 (US)

(72) Inventors: ROBERTSON, Ruairidh Sandwich, MA 02563 (US) CARPENTER, David Jaffrey, NH 03452 (US) STRATTON, Alan Kenneth Milford, NH 03055 (US) BONNOITT, George K. Amherst, NH 03031 (US) (74) Representative: Dummett Copp LLP  25 The Square Martlesham Heath Ipswich IP5 3SL Ipswich IP5 3SL (GB)