(19)

(11)

EP 1 863 617 A2

(12)

(88) Date of publication A3: 09.11.2006 (43) Date of publication: 12.12.2007 Bulletin 2007/50 (21) Application number: 06727322.7 (22) Date of filing: 16.03.2006

(51) International Patent Classification (IPC):  B25H 3/00(2006.01) (86) International application number: PCT/IB2006/000588 (87) International publication number: WO 2006/097829 (21.09.2006 Gazette 2006/38)

(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: 18.03.2005 FR 0502681 (71) Applicant: SOCIETE DE PROSPECTION ET D'INVENTIONS TECHNIQUES SPIT 26501 Bourg-Les-Valence Cédex (FR)	(72) Inventor: SIMONIN, Jean-Luc F-26120 Barcelonne (FR) (74) Representative: Bloch, Gérard et al Cabinet Bloch & Gevers 23bis, rue de Turin 75008 Paris 75008 Paris (FR)