(19)

(11)

EP 0 371 047 A1

(12)

(43) Date of publication: 06.06.1990 Bulletin 1990/23 (21) Application number: 88905924.0 (22) Date of filing: 27.06.1988

(51) International Patent Classification (IPC):  B42F 21/ 06( . ) (86) International application number: PCT/GB1988/000501 (87) International publication number: WO 1988/010197 (29.12.1988 Gazette 1988/28)

(84) Designated Contracting States: CH DE FR IT LI NL (30) Priority: 26.06.1987 GB 19870015041 (71) Applicant: CATER-PARRATT LIMITED Sutton, Surrey SM3 9QD (GB)	(72) Inventors: WHALEY, John, Francis Carter-Parratt Limited Sutton Surrey SM3 9QD (GB) EMMERSON, Andrew, James Carter-Parratt Limited Sutton Surrey SM3 9QD (GB) (74) Representative: King, Bertram Thomas  KINGS PATENT AGENCY LIMITED 73 Farringdon Road London EC1M 3JB London EC1M 3JB (GB)