(19)

(11)

EP 2 342 513 A1

(12)

(43) Date of publication: 13.07.2011 Bulletin 2011/28 (21) Application number: 09818509.3 (22) Date of filing: 01.10.2009

(51) International Patent Classification (IPC):  F25D 17/06(2006.01) (86) International application number: PCT/US2009/059238 (87) International publication number: WO 2010/039964 (08.04.2010 Gazette 2010/14)

(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 Designated Extension States: AL BA RS (30) Priority: 03.10.2008 US 102688 P (71) Applicant: Mclean Midwest Corporation Champlin, MN 55316 (US)	(72) Inventors: KOEHLER, Michael, J. Ramsey MN 55303 (US) SCHROEDER, Randal A. Champlin MN 55316 (US) (74) Representative: Scheuzger, Beat Otto  Bovard AG Patent- und Markenanwälte Optingenstrasse 16 3000 Bern 25 3000 Bern 25 (CH)