(19)

(11)

EP 1 706 939 A1

(12)

(43) Date of publication: 04.10.2006 Bulletin 2006/40 (21) Application number: 04797150.2 (22) Date of filing: 24.11.2004

(51) International Patent Classification (IPC):  H02P 1/42(2006.01) (86) International application number: PCT/BR2004/000233 (87) International publication number: WO 2005/053147 (09.06.2005 Gazette 2005/23)

(84) Designated Contracting States: AT SK (30) Priority: 28.11.2003 BR 0305338 (71) Applicant: EMPRESA BRASILEIRA DE COMPRESSORES S/A - EMBRACO 89219-901 Joinville, SC (BR)	(72) Inventors: SCHWARZ, Marcos, Guilherme CEP-89204-320 Joinville, SC (BR) RIBEIRO DUARTE, Ronaldo CEP-89218-600, Joinville, SC (BR) (74) Representative: Burt, Matthew Thomas et al Abel & Imray 20 Red Lion Street London WC1R 4PQ 20 Red Lion Street London WC1R 4PQ (GB)