(19)

(11)

EP 0 194 837 A3

(12)	EUROPEAN PATENT APPLICATION

(88) Date of publication A3: 10.08.1988 Bulletin 1988/32 (43) Date of publication A2: 17.09.1986 Bulletin 1986/38 (21) Application number: 86301698 (22) Date of filing: 10.03.1986

(84) Designated Contracting States: BE CH DE FR GB IT LI NL SE (30) Priority: 14.03.1985 GB 8506628 (71) Applicant: HAYWARD TYLER LIMITED  ()	(72) Inventor: Webster, Guy Rudgard  ()