(19)

(11)

EP 1 789 718 A1

(12)

(43) Date of publication: 30.05.2007 Bulletin 2007/22 (21) Application number: 05771182.2 (22) Date of filing: 04.08.2005

(51) International Patent Classification (IPC):  F16L 55/10(2006.01) B21D 41/04(2006.01) F25B 45/00(2006.01) (86) International application number: PCT/BR2005/000161 (87) International publication number: WO 2006/012724 (09.02.2006 Gazette 2006/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 05.08.2004 BR 0403206 (71) Applicant: WHIRLPOOL S.A. 04578-000 São Paulo SP (BR)	(72) Inventors: ESPÍNDOLA, Estevão, Marino 89223-050 Joinville - SC (BR) ALMEIDA, Sthefan, Verjas de 09613-050 São Bernardo do Campo - SP (BR) SOUZA, Eriberto Nelson de 89221-595 Joinville - SC (BR) (74) Representative: Held, Stephan  Meissner, Bolte & Partner GbR Postfach 86 03 29 81630 München 81630 München (DE)