(19)

(11)

EP 0 122 913 A1

(12)

(43) Date of publication: 31.10.1984 Bulletin 1984/44 (21) Application number: 82903534.0 (22) Date of filing: 12.10.1982

(51) International Patent Classification (IPC):  B63B 1/ 14( . ) B63H 25/ 00( . ) B63B 35/ 73( . ) (86) International application number: PCT/US1982/001458 (87) International publication number: WO 1984/001551 (26.04.1984 Gazette 1984/11)

(84) Designated Contracting States: DE FR GB NL (71) Applicant: LIU, Gordon Y.T. Midland MI 48640 (US)	(72) Inventor: LIU, Gordon Y.T. Midland MI 48640 (US)