(19)

(11)

EP 2 707 177 A1

(12)

(43) Date of publication: 19.03.2014 Bulletin 2014/12 (21) Application number: 12719693.9 (22) Date of filing: 04.05.2012

(51) International Patent Classification (IPC):  B25B 21/00(2006.01) B25B 23/147(2006.01) (86) International application number: PCT/EP2012/058304 (87) International publication number: WO 2012/156218 (22.11.2012 Gazette 2012/47)

(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 (30) Priority: 13.05.2011 EP 11166054 (71) Applicant: PolyResearch AG 7000 Chur (CH)	(72) Inventor: MAY, Lutz 82335 Berg (DE) (74) Representative: Maiwald Patentanwalts GmbH  Elisenhof Elisenstrasse 3 80335 München 80335 München (DE)