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    • 10. 发明公开
    • Method of making an encapsulated fuse and the fuse made thereby
    • 制造保险丝保险丝的方法及其保险丝
    • EP0302568A3
    • 1990-08-01
    • EP88201669.4
    • 1988-08-02
    • Littelfuse B.V.
    • Sexton, William
    • H01H69/02H01H85/14
    • H01H85/165H01H69/02H01H85/17
    • A method of making a cartridge-type fuse involves forming a subassembly comprising an inner insulating housing preferably made of a transparent glass material, end cap terminals at the ends of the housing and leads extending axially therefrom. A preferably transparent encapsulating body is molded around the inner housing which covers, seals and physically interconnects the exposed exterior surfaces of the inner housing, terminal means and a portion of each lead adjacent to the terminal means. The molding operation is preferably carried out by unwinding a roll (11) of the fuse subassemblies (A) having their leads (5) secured between a pair of carrier strips (10) wound up with the subassemblies into a roll and supported on a rotatable supply reel (12). The reel is unwound in intermittent steps to bring a predetermined number of the subassemblies between pairs of mold cavity-forming elements (18A, 18B) initially separated and then brought together around the fuse subassemblies to mold the encapsulating bodies (B) therearound. The completed encapsulated fuses carried between the carrier strips are then would upon a take-up roll (12') for storage or shipment to the ultimate user.