(19)

(11)

EP 2 622 221 A1

(12)

(43) Date of publication: 07.08.2013 Bulletin 2013/32 (21) Application number: 11829738.1 (22) Date of filing: 07.09.2011

(51) International Patent Classification (IPC):  F04B 17/00(2006.01) (86) International application number: PCT/US2011/050643 (87) International publication number: WO 2012/044445 (05.04.2012 Gazette 2012/14)

(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: 01.10.2010 US 388730 P (71) Applicant: Franklin Electric Company Inc. Bluffton, IN 46714 (US)	(72) Inventor: HAMPTON, Steve Mustang OK 73064 (US) (74) Representative: Dr. Weitzel & Partner  Patentanwälte Friedenstrasse 10 89522 Heidenheim 89522 Heidenheim (DE)