(19)

(11)

EP 1 053 057 A1

(12)

(43) Date of publication: 22.11.2000 Bulletin 2000/47 (21) Application number: 98908432.2 (22) Date of filing: 07.01.1998

(51) International Patent Classification (IPC)7: B02C 19/12, B30B 7/00 (86) International application number: PCT/US9800/367 (87) International publication number: WO 9934/925 (15.07.1999 Gazette 1999/28)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Haddonfield Management Co., Ltd. Sherman Oaks, CA 91403 (US)	(72) Inventor: HALL, Lorne, D. Redding, CA 96002-4102 (US) (74) Representative: Powell, Timothy John  Eric Potter Clarkson,Park View House,58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)