(19)

(11)

EP 0 686 087 A1

(12)

(43) Date of publication: 13.12.1995 Bulletin 1995/50 (21) Application number: 94908713.0 (22) Date of filing: 04.02.1994

(51) International Patent Classification (IPC):  B31F 1/ 12( . ) D06C 21/ 00( . ) (86) International application number: PCT/US1994/001285 (87) International publication number: WO 1994/017991 (18.08.1994 Gazette 1994/19)

(84) Designated Contracting States: CH DE GB IT LI (30) Priority: 04.02.1993 US 19930013311 (71) Applicant: WALTON, Richard C.,(Executor for the Estate of Richard R. Walton,deceased) Boston, MA 02114 (US)	(72) Inventors: WALTON, Richard, C. Boston, MA 02114 (US) MUNCHBACH, George, E. Roslindale, MA 02131 (US) (74) Representative: Blatchford, William Michael, et al  Withers & Rogers 4 Dyer's Buildings Holborn London EC1N 2JT London EC1N 2JT (GB)