(19)

(11)

EP 0 227 775 A1

(12)

(43) Date of publication: 08.07.1987 Bulletin 1987/28 (21) Application number: 86904248.0 (22) Date of filing: 23.06.1986

(51) International Patent Classification (IPC):  F24J 2/ 24( . ) (86) International application number: PCT/GB1986/000363 (87) International publication number: WO 1986/007627 (31.12.1986 Gazette 1986/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU (30) Priority: 21.06.1985 GB 19850015747 (71) Applicant: BILLINGHAM, Nicholas Donnelly Stratford-Upon-Avon Warwickshire (GB)	(72) Inventor: BILLINGHAM, Nicholas Donnelly Stratford-Upon-Avon Warwickshire (GB)