(19)

(11)

EP 0 176 566 A1

(12)

(43) Date of publication: 09.04.1986 Bulletin 1986/15 (21) Application number: 85901856.0 (22) Date of filing: 29.03.1985

(51) International Patent Classification (IPC):  B31F 1/ 18( . ) D06C 21/ 00( . ) B31F 1/ 12( . ) (86) International application number: PCT/US1985/000541 (87) International publication number: WO 1985/004369 (10.10.1985 Gazette 1985/22)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 29.03.1984 US 19840594670 (71) Applicant: Walton, Richard R. Boston Massachusetts 02114 (US)	(72) Inventors: MUNCHBACH, George, E. Roslindale, MA 02131 (US) Walton, Richard R. Boston Massachusetts 02114 (US) (74) Representative: Heidrich, Udo, Dr. jur., Dipl.-Phys.  Rechtsanwalt & Patentanwalt Dipl.-Phys. Dr. jur. U. HEIDRICH Franziskanerstrasse 30 D-81669 München D-81669 München (DE)