(19)

(11)

EP 0 536 165 A1

(12)

(43) Date of publication: 14.04.1993 Bulletin 1993/15 (21) Application number: 91910188.0 (22) Date of filing: 07.05.1991

(51) International Patent Classification (IPC):  H05B 3/ 14( . ) H05B 3/ 56( . ) (86) International application number: PCT/US1991/003123 (87) International publication number: WO 1991/017642 (14.11.1991 Gazette 1991/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI NL SE (30) Priority: 07.05.1990 US 19900519701 (71) Applicant: RAYCHEM CORPORATION Menlo Park California 94025 (US)	(72) Inventors: BATLIWALLA, Neville, S. Foster City, CA 94404 (US) THOMPSON, James, C. Los Altos, CA 94022 (US) (74) Representative: Jones, Graham Henry  THE PLESSEY COMPANY plc Vicarage Lane Ilford, Essex Ilford, Essex (GB)