(19)

(11)

EP 0 452 396 A1

(12)

(43) Date of publication: 23.10.1991 Bulletin 1991/43 (21) Application number: 90901852.0 (22) Date of filing: 03.01.1990

(51) International Patent Classification (IPC):  A44B 6/ 00( . ) (86) International application number: PCT/GB1990/000007 (87) International publication number: WO 1990/007287 (12.07.1990 Gazette 1990/16)

(84) Designated Contracting States: CH DE ES FR IT LI SE (30) Priority: 03.01.1989 GB 19890000032 31.01.1989 GB 19890002057 (71) Applicant: J.A. & O.M. TAIT & COMPANY Kirkwall, Orkney KW15 1DH (GB)	(72) Inventor: TAIT, Ola, Mary Orkney KW15 1DX (GB) (74) Representative: Sanderson, Laurence Andrew, et al  SANDERSON & CO. European Patent Attorneys 34, East Stockwell Street Colchester Essex CO1 1ST Colchester Essex CO1 1ST (GB)