(19)

(11)

EP 2 707 918 A2

(12)

(88) Date of publication A3: 04.04.2013 (43) Date of publication: 19.03.2014 Bulletin 2014/12 (21) Application number: 12786018.7 (22) Date of filing: 11.05.2012

(51) International Patent Classification (IPC):  H01M 4/02(2006.01) H01M 2/20(2006.01) (86) International application number: PCT/US2012/037469 (87) International publication number: WO 2012/158499 (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 US 201161485984 P (71) Applicant: East Penn Manufacturing Co. Lyon Station, PA 19536-0147 (US)	(72) Inventor: LEV, Frank Thornhill, Ontario L3T1R5 (CA) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser  Leopoldstrasse 4 80802 München 80802 München (DE)