Safety device for switches

Details Safety device for switches Safety device for switches

2006-10-03

2006-10-03

Lea-Edmonds, Lisa (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

C337S089000

Reexamination Certificate

active

07116207

ABSTRACT:
A switch includes a body and a switch member is pivotably engaged with the top opening of the body. A resilient member is connected between an inside of the body and a first end of the switch member. The switch member further has an extension extending from a second end of an underside thereof and a push member extends from the first end of the underside of the switch member. A bi-metallic contact plate has a first end fixed to one of two terminals and a contact portion splits from the contact plate and a first contact point is connected to an underside of the contact portion. A second contact point is connected to the other terminal. A free end of the contact portion is connected with a free fist end of a spring member that has an extension portion extending from a top thereof and a second end of the spring member is connected to the contact plate. The second end of the contact plate is deformed downward and the free end of the contact portion is deformed upward to separate the two contact point when overload. The resilient member pivots the switch member to “OFF” position after the circuit is overload.

REFERENCES:
patent: 3733571 (1973-05-01), Budlane et al.
patent: 6452125 (2002-09-01), Yu
patent: 6456185 (2002-09-01), Yu
patent: 6469610 (2002-10-01), Chen
patent: 6884955 (2005-04-01), Yu
patent: 6984798 (2006-01-01), Lu
patent: 7030726 (2006-04-01), Yu

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