Patent ID: 7304560

Claim:
A safety switch, comprising a body with a top opening and a switch member pivotably engaged with the top opening of the body, an extension extending from a first end of an underside of the switch member and a push rod pivotably connected to an inside of the switch member, a stop rod extending from the inside of the switch member and locating at a distance from a pivot position of the push rod, a biasing member connected to the push rod and pushing the push rod toward the stop rod, a first terminal and a second terminal extending through a bottom of the body; and a contact plate being a curved and flexible metal plate and having a first end fixed to the first terminal and a second end of the contact plate being a free end, a contact portion splitting from the contact plate and a first contact point connected to an underside of the contact portion, a free end of the contact portion located above a top surface of the contact plate and connected with a free first end of a spring member, a second end of the spring member connected to the contact plate, a second contact point connected to the second terminal and located beneath the first contact point on the contact portion, the second end of the contact plate and the free end of the contact portion being deformed in opposite directions when being heated, and the extension of the switch member located above the second end of the contact plate.