(19)

(11)

EP 4 405 131 A1

(12)

(43) Date of publication: 31.07.2024 Bulletin 2024/31 (21) Application number: 21958548.6 (22) Date of filing: 21.09.2021

(51) International Patent Classification (IPC):  B24B 3/54(2006.01) B24B 3/40(2006.01) B24B 3/36(2006.01) B24B 23/00(2006.01) (52) Cooperative Patent Classification (CPC): B24D 15/085; B24D 15/023; B24D 15/065; B24D 15/04 (86) International application number: PCT/US2021/051292 (87) International publication number: WO 2023/048700 (30.03.2023 Gazette 2023/13)

(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 (71) Applicant: DAREX, LLC Ashland, OR 97520 (US)	(72) Inventors: BAKER, Steven, L. Medford, OR 97501 (US) MACFARLANE, Conner, S. Bend, OR 97703 (US) ZACHARIASEN, Joseph, T. Medford, OR 97501 (US) DOVEL, Daniel, T. Shady Cove, OR 97539 (US) CAMPBELL, Travis Medford, OR 97501 (US) (74) Representative: Beck, Michaël Andries T.  IPLodge Technologielaan 9 3001 Heverlee 3001 Heverlee (BE)