(19)

(11)

EP 0 660 691 A1

(12)

(43) Date of publication: 05.07.1995 Bulletin 1995/27 (21) Application number: 93920943.0 (22) Date of filing: 14.09.1993

(51) International Patent Classification (IPC):  A61F 2/ 64( . ) A61F 2/ 74( . ) A61F 2/ 50( . ) (86) International application number: PCT/GB1993/001946 (87) International publication number: WO 1994/006374 (31.03.1994 Gazette 1994/08)

(84) Designated Contracting States: DE ES FR IT (30) Priority: 14.09.1992 GB 19920019419 02.06.1993 GB 19930011303 (71) Applicant: CHAS A BLATCHFORD & SONS LIMITED Hampshire RG22 4AH (GB)	(72) Inventor: HARRIS, Graham, James 61 Oakridge Road Hampshire (GB) (74) Representative: Blatchford, William Michael, et al  Withers & Rogers 4 Dyer's Buildings Holborn London EC1N 2JT London EC1N 2JT (GB)