Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1987-09-03
1988-08-23
Broome, H.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337267, H01H 8530
Patent
active
047664088
ABSTRACT:
A current limiting fuse with an indicator characterized by a generally tubular, electrically insulating casing having a pair of tubular terminal members at opposite ends of the casing. A fusible element extends between the terminal members and through the casing. An indicator plunger extends from one end terminal member and is movable between a retracted and extended positions and is biased in the extended position. A restraining wire extending between the other end terminal member and the indicator plunger. The wire having a smaller diameter portion in the casing. An electrically conductive grease disposed between the plunger and the tubular terminal member.
REFERENCES:
patent: 3832665 (1974-08-01), Belcher
patent: 3959617 (1976-05-01), Hults
patent: 4001749 (1977-01-01), Kozacka
patent: 4156225 (1979-05-01), Cuzzone
patent: 4387358 (1983-06-01), Knapp, Jr.
patent: 4617544 (1986-10-01), Mooz et al.
Cameron Frank L.
Smith George A.
Broome H.
Johns L. P.
Westinghouse Electric Corp.
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