Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1996-10-07
1998-06-30
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337246, 337252, 29623, H01H 85143
Patent
active
057740372
ABSTRACT:
A subminiature circuit protector includes a substrate carrying a metal fuse element hermetically sealed in a glass sleeve cartridge. The fuse element may comprise a film deposited on the substrate, or, alternatively a metal strip or wire. Leads extend from opposing ends of the sleeve for connection in a circuit, and a gas is sealed in the sleeve to provide a suitable environment to improve operating lifetime and interrupting capability. A method for making a circuit protector includes placing a substrate carrying a fuse element in a glass sleeve and placing leads in contact with the fuse element. The assembly is heated in the presence of a gas below atmospheric pressure to a temperature sufficient to soften the glass. The pressure is then increased to cause the ends of the glass sleeve to form a hermetic seal about the leads.
REFERENCES:
patent: Re33137 (1989-12-01), Gurevich
patent: 3271544 (1966-09-01), Ragan
patent: 3304394 (1967-02-01), Urani
patent: 4532489 (1985-07-01), Phillips
patent: 4678890 (1987-07-01), Sorrow
patent: 4679113 (1987-07-01), Book
patent: 4725480 (1988-02-01), Gurol
patent: 4751489 (1988-06-01), Spaunhorst
patent: 4769622 (1988-09-01), Leavitt
patent: 4771260 (1988-09-01), Gurevich
patent: 4862134 (1989-08-01), Poerschke
patent: 4873506 (1989-10-01), Gurevich
patent: 4924203 (1990-05-01), Gurevich
patent: 4926153 (1990-05-01), Gurevich
patent: 4988969 (1991-01-01), Gurevich
patent: 5015176 (1991-05-01), Gurevich
patent: 5027101 (1991-06-01), Morrill
patent: 5097246 (1992-03-01), Cook
patent: 5122774 (1992-06-01), Morrill
patent: 5262750 (1993-11-01), Gurevich
Cooper Industries Inc.
Gandhi Jayprakash N.
Picard Leo P.
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