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Cartridge fuse with two arc-quenching end plugs

  • US 4,656,453 A
  • Filed: 12/10/1985
  • Issued: 04/07/1987
  • Est. Priority Date: 12/09/1982
  • Status: Expired due to Term
First Claim
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1. An electrical cartridge fuse comprising:

  • a housing made of insulating material and having a fuse filament receiving passageway therethrough, said passageway being rectilinear and having opposed ends opening to the exterior of said housing;

    a fuse filament longitudinally disposed within said passageway in spaced relation to the central portion of said housing and having opposed ends opening to the exterior of said housing;

    a fuse filament longitudinally disposed within said passageway in spaced relation to the central portion of said housing and having opposed ends extending to the opposite ends of said passageway; and

    a pair of compressible resilient solid plug members made of insulating material of an axial length at least several times the transverse dimension of the fuse filament, said plug members being secured at the opposed ends of said passageway and being resiliently laterally compressed against an axial length of the opposed ends of said fuse filament at least several times the transverse dimensions of the fuse filament captively to secure said fuse filament in said housing under a desired axial tension and wherein, upon an arc forming and burning away material of the fuse filament portion adjacent thereto, the plug members will move into the space vacated by the burned away fuse filament material to quench the arc and;

    end terminals closing off the ends of said passageway and electrically connected to the ends of said fuse filament.

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