(19)

(11)

EP 2 734 796 A1

(12)

(43) Date of publication: 28.05.2014 Bulletin 2014/22 (21) Application number: 12814189.2 (22) Date of filing: 18.07.2012

(51) International Patent Classification (IPC):  F25B 21/00(2006.01) H01F 1/01(2006.01) H01L 37/04(2006.01) H02N 11/00(2006.01) (86) International application number: PCT/US2012/047168 (87) International publication number: WO 2013/012908 (24.01.2013 Gazette 2013/04)

(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: 19.07.2011 US 201161509381 P (71) Applicant: ASTRONAUTICS CORPORATION OF AMERICA Milwaukee, Wisconsin 53201-0523 (US)	(72) Inventors: ZIMM, Carl B. Madison, Wisconsin 53704 (US) JACOBS, Steven A. Madison, Wisconsin53711 (US) (74) Representative: Roberts, Mark Peter  J A Kemp 14 South Square Gray's Inn London WC1R 5JJ London WC1R 5JJ (GB)