(19)
(11) EP 0 300 654 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.03.1990 Bulletin 1990/11

(43) Date of publication A2:
25.01.1989 Bulletin 1989/04

(21) Application number: 88306279.6

(22) Date of filing: 08.07.1988
(51) International Patent Classification (IPC)4: H01H 85/10, H01H 85/18, H01H 69/02, H01K 1/66
(84) Designated Contracting States:
BE DE ES FR IT SE

(30) Priority: 24.07.1987 GB 8717579

(71) Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.
London W1A 1EH (GB)

(72) Inventor:
  • Wyman, Patrick Roy
    North Harrow Middlesex HA2 6HL (GB)

(74) Representative: Maury, Richard Philip 
The General Electric Company p.l.c. G.E.C. Patent Department (Wembley Office) Hirst Research Centre East Lane
Wembley Middlesex HA9 7PP
Wembley Middlesex HA9 7PP (GB)


(56) References cited: : 
   
       


    (54) Protective electric fuses


    (57) An electric fuse, mainly for an incandescent lamp comprising a length of readily fusible electrically conducting material formed with at least one region of reduced cross-section between adjoining regions of larger cross-section, and having around the smaller cross-section region a quantity of electrically insulating material in the form of grains adhering to each other and covered by a protecting coating.







    Search report