Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1994-12-13
1995-10-10
Picard, Leo P.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337255, 439622, 439638, H01H 8502, H01H 85143, H01R 1368, H01R 2500
Patent
active
054574455
ABSTRACT:
Disclosed is a safety plug for electrical appliances and mainly includes an upper casing, a lower casing, two pole pins, a cylindrical cartridge fuse and a fuse terminal. The upper casing and the lower casing are slidably and detachably connected with each other by engagement of teeth provided at inner side walls of the upper casing and retaining hooks provided at outer side walls of the lower casing. One of the pole pins is provided at its rear end with an arcuated wrapping conductor to fitly and firmly wrap around a lower half of a first end of the cartridge fuse. The fuse terminal is provided with an .OMEGA.-shaped wrapping conductor to fitly and firmly wrap around a lower half of a second end of the cartridge fuse. These arrangements allow the cartridge fuse to correctly sense the current passing therethrough and the fuse wire in the cartridge fuse to be burned out at overload.
REFERENCES:
patent: 2528971 (1950-11-01), Philips
patent: 2636097 (1953-04-01), Shapiro
patent: 2777916 (1957-01-01), Cooper
patent: 3833875 (1974-09-01), Holoka
patent: 4275374 (1981-06-01), Chaucer
patent: 4679877 (1987-07-01), Ahroni
patent: 4752243 (1988-06-01), Meidan
patent: 4904976 (1990-02-01), Liaq
patent: 5249986 (1993-10-01), Lu
patent: 5281943 (1994-01-01), Liao
patent: 5320563 (1994-06-01), Liao
Klein David I.
Picard Leo P.
Rosenberg Morton J.
Ryan Stephen T.
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