(19)

(11)

EP 0 190 304 A1

(12)

(43) Date of publication: 13.08.1986 Bulletin 1986/33 (21) Application number: 85904123.0 (22) Date of filing: 20.08.1985

(51) International Patent Classification (IPC):  H01H 9/ 54( . ) (86) International application number: PCT/GB1985/000371 (87) International publication number: WO 1986/001334 (27.02.1986 Gazette 1986/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 20.08.1984 GB 19840021070 (71) Applicant: Muirhead, Allen David Aurora Ontario L4L 2G7 (CA)	(72) Inventor: Muirhead, Allen David Aurora Ontario L4L 2G7 (CA)