Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1983-06-17
1985-02-12
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337241, H01H 8532
Patent
active
044994478
ABSTRACT:
An integrity indicator formed as an illuminable bead is combined with the pair of flat terminal blades of a miniature plug-in fuse and is positioned in a central window provided in the top wall of the insulator housing thereof. The housing defines a chamber having an open bottom and a central section with relatively narrow lateral sections in which upper portions of the blades are secured. A fuse-wire extends across the central section conductively interconnecting the blades. The illuminable bead has a pair of wire leads extending oppositely into the lateral sections of the chamber, each wire lead conductively contacting the upper portion of one of the blades and connecting the bead in parallel circuit with the fuse-wire. Clamping components formed on the interior of the top wall and on the upper portion of each terminal blade secure each wire lead in operative position. Embodiments include the fuse-wire integrally formed with the blades as a unitary structure and formed separately as a three piece structure wherein opposite ends of the fuse-wire are also secured by the clamping components, the latter being either in coplanar relation with the blades or disposed perpendicular to the plane of the blades.
REFERENCES:
patent: 3909767 (1975-09-01), Williamson et al.
patent: 4308516 (1981-12-01), Shimada et al.
Barnett Erwin M.
Broome Harold
Guim Multi-Tech Corporation
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