(19)

(11)

EP 0 506 718 A1

(12)

(43) Date of publication: 07.10.1992 Bulletin 1992/41 (21) Application number: 91900684.0 (22) Date of filing: 17.12.1990

(51) International Patent Classification (IPC):  A47B 21/ 00( . ) G06F 1/ 16( . ) A47B 21/ 03( . ) G06F 3/ 02( . ) (86) International application number: PCT/AU1990/000595 (87) International publication number: WO 1991/008694 (27.06.1991 Gazette 1991/14)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 18.12.1989 US 19890452048 14.09.1990 AU 19910000022 (71) Applicant: COTTERILL, Michael, John Canyonleigh, NSW 2577 (AU)	(72) Inventor: COTTERILL, Michael, John Canyonleigh, NSW 2577 (AU) (74) Representative: Barlow, Roy James  J.A. KEMP & CO. 14, South Square Gray's Inn London WC1R 5LX London WC1R 5LX (GB)