(19)

(11)

EP 0 641 453 A1

(12)

(43) Date of publication: 08.03.1995 Bulletin 1995/10 (21) Application number: 91918363.0 (22) Date of filing: 22.10.1991

(51) International Patent Classification (IPC):  C08J 5/ 18( . ) G01M 3/ 04( . ) F16L 1/ 11( . ) H02G 9/ 02( . ) (86) International application number: PCT/GB1991/001844 (87) International publication number: WO 1993/008486 (29.04.1993 Gazette 1993/11)

(84) Designated Contracting States: BE DE ES FR IT NL (71) Applicants: HARVEY, Christopher James Limpsfield, Surrey RH8 0AP (GB) MORGAN, Derek Michael Reigate, Surrey RH2 7HE (GB)	(72) Inventors: HARVEY, Christopher James Limpsfield, Surrey RH8 0AP (GB) MORGAN, Derek Michael Reigate, Surrey RH2 7HE (GB) (74) Representative: Laight, Martin Harvey  W.H. Beck, Greener & Co. 7 Stone Buildings Lincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)