(19)

(11)

EP 0 932 812 A1

(12)

(43) Date of publication: 04.08.1999 Bulletin 1999/31 (21) Application number: 97913740.0 (22) Date of filing: 22.10.1997

(51) International Patent Classification (IPC):  F41H 1/ 02( . ) F41H 5/ 04( . ) D03D 15/ 02( . ) (86) International application number: PCT/US1997/019150 (87) International publication number: WO 1998/019131 (07.05.1998 Gazette 1998/18)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 25.10.1996 US 19960029453P 15.10.1997 US 19970950402 (71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY Wilmington Delaware 19898 (US)	(72) Inventor: CHIOU, Minshon Chesterfield, VA 23838 (US) (74) Representative: Woodman, Derek, et al  Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB)