(19)

(11)

EP 1 971 778 A1

(12)

(43) Date of publication: 24.09.2008 Bulletin 2008/39 (21) Application number: 07705422.9 (22) Date of filing: 10.01.2007

(51) International Patent Classification (IPC):  F04B 43/12(2006.01) (86) International application number: PCT/IB2007/000072 (87) International publication number: WO 2007/080499 (19.07.2007 Gazette 2007/29)

(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: 11.01.2006 FR 0600240 (71) Applicant: Gilson S.A.S. 95400 Villiers-le-Bel (FR)	(72) Inventor: VOYEUX, Claude F-95190 Goussainville (FR) (74) Representative: Ilgart, Jean-Christophe  BREVALEX 3, rue du Docteur Lancereaux 75008 Paris 75008 Paris (FR)