(19)

(11)

EP 3 230 522 A2

(12)

(88) Date of publication A3: 11.08.2016 (43) Date of publication: 18.10.2017 Bulletin 2017/42 (21) Application number: 15820447.9 (22) Date of filing: 07.12.2015

(51) International Patent Classification (IPC):  D21F 1/00(2006.01) (86) International application number: PCT/EP2015/078855 (87) International publication number: WO 2016/091820 (16.06.2016 Gazette 2016/24)

(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: 08.12.2014 US 201414562945 (71) Applicant: Voith Patent GmbH 89522 Heidenheim (DE)	(72) Inventors: DHENDE, Vikram Summerville, South Carolina 29485 (US) GOOD, Brian Summerville, South Carolina 29483 (US)