Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1977-07-22
1979-01-16
Harris, George
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337248, H01H 8520
Patent
active
041351746
ABSTRACT:
An integrally molded current limiting fuse body having surface elongating skirts integrally molded thereto to increase the surface leakage distance may be used in conjunction with various types of end closures for one or both of the ends of the fuse body. One type of end closure utilizes a metallic end cap to which the mounting studs of the fuse are attached which has an annular flange formed to the edge thereof which is folded over the end of the fuse body to lock the fuse cap over the open end of the fuse body. Another type of end enclosure comprises a molded plastic end cap which can be locked to the end of the fuse housing by a suitable adhesive. The mounting stud may be either attached to the plastic end cap by a threaded nut or may be integrally molded into the end cap. Another type of end closure comprises a metallic plate that overlies the open end of the fuse body and which is held over the open end of the fuse body by a threaded annular flange arrangement which engages threads on the fuse body. One end of the fuse body may have an integrally molded end wall through which a mounting stud may be mounted either by a threaded nut or by molding.
REFERENCES:
patent: 2247084 (1941-06-01), Goff
patent: 2874249 (1959-02-01), Jacobs, Jr. et al.
patent: 3483501 (1969-12-01), Kozacka
patent: 3648211 (1972-03-01), McKeithan
patent: 3699491 (1972-10-01), Vrabel et al.
Harris George
S&C Electric Company
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