(19)

(11)

EP 0 554 391 A1

(12)

(43) Date of publication: 11.08.1993 Bulletin 1993/32 (21) Application number: 92900022.0 (22) Date of filing: 07.10.1991

(51) International Patent Classification (IPC):  D21C 3/ 22( . ) D21C 9/ 10( . ) D21C 3/ 26( . ) (86) International application number: PCT/US1991/007402 (87) International publication number: WO 1992/007994 (14.05.1992 Gazette 1992/11)

(84) Designated Contracting States: AT DE ES FR GB IT SE (30) Priority: 24.10.1990 US 19900602605 (71) Applicant: BELOIT TECHNOLOGIES, INC. Wilmington, Delaware 19801 (US)	(72) Inventors: ANDREWS, Ethan K. Lenoxdale, MA 01242 (US) MERA, Fernando, E. Portland, OR 97202 (US) SWIFT, Lawrence, K. Dalton, MA 01226 (US) (74) Representative: Schmitz, Jean-Marie, et al  OFFICE DENNEMEYER S.à.r.l. 55, rue des Bruyères L-1274 Howald L-1274 Howald (LU)