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US 4,337,570 AGranted
Electrical fuselinks
AssigneeKenneth E. Beswick Limited
InventorKazimierz W. Woznica
Life of this patent
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AssigneeKenneth E. Beswick Limited
InventorKazimierz W. Woznica
Estimating the term…
A fuse element for an electrical cartridge fuse comprises a fusible wire secured to opposite end zones of an insulating strip by metallic layers sprayed onto the end zones. The insulating strip has a slot therein between the end zones to prevent the fusible, central section of the wire from contacting the strip. The fuse element is disposed in an insulating barrel and the layers are soldered to end caps of the barrel to connect the fusible wire thereto. Fuse elements of this construction are produced by disposing a fusible wire along a continuous strip of insulating material formed at equally spaced intervals with slots and spraying the metallic layers onto the strip between the slots so as to adhere the fusible wire to the strip. Thereafter, the strip is severed at the zones between the slots so as to produce individual fuse elements. This method of manufacture facilitates the production of cartridge fuses utilizing small diameter fusible wires.
In the manufacture of electrical cartridge fuselinks wherein fuse elements are produced by mounting fusible members on insulating supports between conductive end zones of said supports, and said fuse elements are disposed within insulating barrels with said conductive end zones electrically connected to end terminals of said barrels, the improvement which facilitates the rapid and multiple production of said fuse elements comprising the steps of disposing a continuous length of said fusible member along a continous strip of insulating material, adhering metallic layers to said continuous fusible member and strip at spaced attachment zones along said strip to attach said continuous fusible member to said strip, and severing said continuous fusible member and strip at said spaced attachment zones to produce individual ones of said fuse elements.
Dependencies are inferred from the claim text.