(19)

(11)

EP 0 357 621 A1

(12)

(43) Date of publication: 14.03.1990 Bulletin 1990/11 (21) Application number: 88902727.0 (22) Date of filing: 29.02.1988

(51) International Patent Classification (IPC):  B24D 11/ 06( . ) B24D 15/ 02( . ) B24D 15/ 00( . ) B24D 99/ 00( . ) (86) International application number: PCT/US1988/000617 (87) International publication number: WO 1989/008008 (08.09.1989 Gazette 1989/21)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicants: HERITAGE INDUSTRIES Cleveland, OH 44131 (US) PETROVICH, Richard Parma Heights, OH 44130 (US)	(72) Inventor: PETROVICH, Richard Parma Heights, OH 44130 (US) (74) Representative: Jones, Michael Raymond, et al  HASELTINE LAKE & CO. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)