(19)

(11)

EP 0 482 122 A1

(12)

(43) Date of publication: 29.04.1992 Bulletin 1992/18 (21) Application number: 90917895.0 (22) Date of filing: 27.06.1990

(51) International Patent Classification (IPC):  A63H 33/ 18( . ) A63B 65/ 08( . ) (86) International application number: PCT/US1990/003622 (87) International publication number: WO 1991/000757 (24.01.1991 Gazette 1991/03)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 06.07.1989 US 19890377018 01.06.1990 US 19900532003 (71) Applicant: ADLER, Alan John Palo Alto, California 94306 (US)	(72) Inventor: ADLER, Alan John Palo Alto, California 94306 (US) (74) Representative: Orchard, Oliver John  JOHN ORCHARD & CO. Staple Inn Buildings North High Holborn London WC1V 7PZ London WC1V 7PZ (GB)