(19)

(11)

EP 1 611 401 A1

(12)

(43) Date of publication: 04.01.2006 Bulletin 2006/01 (21) Application number: 04725847.0 (22) Date of filing: 05.04.2004

(51) International Patent Classification (IPC):  F24J 2/10(1985.01) (86) International application number: PCT/PT2004/000006 (87) International publication number: WO 2004/090437 (21.10.2004 Gazette 2004/43)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 09.04.2003 PT 10293803 (71) Applicants: Collares Pereira, Engenharia Unipessoal Lda 1600-608 Lisboa (PT) J.V.C.O.- Estudo e Projecto de Engenharia e Ambiente, Unipessoal, Lda 2760-043 Caxias (PT)	(72) Inventors: PEREIRA, Manuel Pedro Ivens Collares P-1600-608 Lisboa (PT) OLIVEIRA, Joao, Vieira, Correia P-2760-043 Caxias (PT) (74) Representative: Alves Moreira, Pedro et al Rua do Patrocinio, 94 1399-019 Lisbon 1399-019 Lisbon (PT)