(19)

(11)

EP 0 612 222 A1

(12)

(43) Date of publication: 31.08.1994 Bulletin 1994/35 (21) Application number: 93904190.0 (22) Date of filing: 11.02.1993

(51) International Patent Classification (IPC):  A47B 13/ 06( . ) A47B 37/ 00( . ) A47B 21/ 00( . ) (86) International application number: PCT/GB1993/000282 (87) International publication number: WO 1993/015630 (19.08.1993 Gazette 1993/20)

(84) Designated Contracting States: DE DK ES FR GB IE IT (30) Priority: 12.02.1992 GB 19920002953 (71) Applicant: THE SECRETARY OF STATE FOR EDUCATION London SW1P 3BT (GB)	(72) Inventors: CARTER, Nicholas John London SW1P 3BT (GB) SMITH, Steven Andrew London SW1P 3BT (GB) (74) Representative: Smith, Norman Ian, et al  F.J. CLEVELAND & COMPANY 40-43 Chancery Lane London WC2A 1JQ London WC2A 1JQ (GB)