Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1975-11-18
1977-06-28
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337162, 337281, H01H 8538
Patent
active
040328791
ABSTRACT:
A circuit-protecting fuse comprises an insulating housing having electrically conductive connectors on opposite ends thereof to connect the fuse in an electrical circuit and at least one fusible link in the housing connected in electrically conductive relationship at opposite ends thereof with the connectors. The fusible link has at least one area of limited cross-section defining a heat-generating section and a member of a material which produces arc quenching gas when heated to a predetermined temperature positioned on the heat-generating section, whereby when an overload condition of predetermined magnitude occurs in a circuit in which the fuse is connected, the heat-generating section melts and vaporizes, and the heat thus produced generates an amount of deionizing gas from the member to extinguish any arc which forms at the vaporized section. Seal means seals the fuse to prevent escape therefrom of flames and ionized gas the the like produced as a result of the overload condition.
REFERENCES:
patent: 2892061 (1959-06-01), Kozacka
patent: 3244839 (1966-04-01), Albright
patent: 3275771 (1966-09-01), Salzer
patent: 3418614 (1968-12-01), Krueger
patent: 3601737 (1971-08-01), Baird et al.
patent: 3721935 (1973-03-01), Kozacka
Broome Harold
Teledyne Inc.
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