Plug with security device having bimetal and restoring button

Details Plug with security device having bimetal and restoring button Plug with security device having bimetal and restoring button

1995-12-12

1998-07-21

Phillips, Michael W.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 66, 337 68, 337333, H01H 3770

Patent

active

057839867

ABSTRACT:
A plug with security device, including a housing, several conductive insertion plates adapted to be inserted into a power socket, conductive wires connected to an electric appliance and a security device. The insertion plates are connected with the conductive wires in the housing. The security device is disposed between at least one insertion plate and one conductive wire and includes a casing, a disconnector seat disposed therein, a thermal bimetal blade disposed on the disconnector seat, a movable contact disposed on the bimetal blade, a fixed contact disposed in the casing and connected with the conductive wire to naturally contact with the movable contact, and an insulative separating structure. When an excessively large current passes through the electric appliance, the bimetal plate is bent to separate the movable contact from the fixed contact and open the circuit. At this time, the insulative separating structure is inserted into a space between the movable and fixed contacts so as to keep the circuit open.

REFERENCES:
patent: 4379278 (1983-04-01), Kuczynski et al.
patent: 4518943 (1985-05-01), Giessner
patent: 5248954 (1993-09-01), Chiang
patent: 5526225 (1996-06-01), Wang

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