(19)

(11)

EP 2 356 376 A1

(12)

(43) Date of publication: 17.08.2011 Bulletin 2011/33 (21) Application number: 09831147.5 (22) Date of filing: 03.12.2009

(51) International Patent Classification (IPC):  F22B 37/54(2006.01) (86) International application number: PCT/US2009/066652 (87) International publication number: WO 2010/065785 (10.06.2010 Gazette 2010/23)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 03.12.2008 US 119719 P 03.12.2009 US 630729 (71) Applicant: Dominion Engineering, Inc. Reston VA 20191 (US)	(72) Inventors: VARRIN, Robert, D., Jr. Reston, VA 20191 (US) LITTLE, Michael, J. Reston, VA 20191 (US) (74) Representative: Ström & Gulliksson AB  Studentgatan 1 P.O. Box 4188 SE-203 13 Malmö SE-203 13 Malmö (SE)