(19)

(11)

EP 0 375 684 A1

(12)

(43) Date of publication: 04.07.1990 Bulletin 1990/27 (21) Application number: 88904886.0 (22) Date of filing: 13.05.1988

(51) International Patent Classification (IPC):  B63H 25/ 38( . ) (86) International application number: PCT/US1988/001588 (87) International publication number: WO 1988/008809 (17.11.1988 Gazette 1988/25)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 13.05.1987 US 19870049620 (71) Applicant: McMILLEN, Winton P. Balboa, CA 92661 (US)	(72) Inventor: ALBERT, Scott, S. Laguna Beach, CA 92651 (US) (74) Representative: Rushton, Ronald, et al  SOMMERVILLE & RUSHTON 11 Holywell Hill St. Albans Hertfordshire AL1 1EZ St. Albans Hertfordshire AL1 1EZ (GB)