(19)

(11)

EP 0 327 581 A1

(12)

(43) Date of publication: 16.08.1989 Bulletin 1989/33 (21) Application number: 87907389.0 (22) Date of filing: 19.10.1987

(51) International Patent Classification (IPC):  D21F 3/ 02( . ) (86) International application number: PCT/US1987/002728 (87) International publication number: WO 1988/003192 (05.05.1988 Gazette 1988/10)

(84) Designated Contracting States: DE FR GB IT SE (30) Priority: 24.10.1986 US 19860922870 (71) Applicants: BELOIT CORPORATION Beloit Wisconsin 53511 (US) BELL, Bernard C. Clinton, WI 53525 (US) LANGE, David V. Beloit, WI 53511 (US)	(72) Inventors: BELL, Bernard C. Clinton, WI 53525 (US) LANGE, David V. Beloit, WI 53511 (US) (74) Representative: Schmitz, Jean-Marie, et al  Dennemeyer & Associates Sàrl P.O. Box 1502 L-1015 Luxembourg L-1015 Luxembourg (LU)