(19)

(11)

EP 2 839 445 A1

(12)

(43) Date of publication: 25.02.2015 Bulletin 2015/09 (21) Application number: 13716781.3 (22) Date of filing: 12.04.2013

(51) International Patent Classification (IPC):  G08B 7/06(2006.01) (86) International application number: PCT/EP2013/057731 (87) International publication number: WO 2013/156414 (24.10.2013 Gazette 2013/43)

(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 (30) Priority: 16.04.2012 DE 202012101384 U (71) Applicant: Hanning & Kahl GmbH & Co. KG 33813 Oerlinghausen (DE)	(72) Inventor: LIESENFELD, Nikolaus 33813 Oerlinghausen (DE) (74) Representative: Ter Meer Steinmeister & Partner  Patentanwälte mbB Artur-Ladebeck-Strasse 51 33617 Bielefeld 33617 Bielefeld (DE)