Patent ID: 8173919

Claim:
A seat belt buckle fastening detector for detecting a seat belt in one of a fastened and unfastened condition with a buckle, the detector comprising: a substrate having a first surface and a second surface, a normally-closed electrical contact, a normally-opened electrical contact, and a common electrical contact, the common contact being formed on the first surface of the substrate, and the normally-closed contact and the normally-opened contact being formed on the second surface of the substrate; and a movable electrode having a contact member including: a first plate portion having a first contact that continuously abuts the common contact; and a second plate portion having a second contact and a third contact abutting the second surface, the second and third contacts being configured to connect the one of the normally-closed contact and the normally-opened contact to the common contact in the fastened position and to connect the other one of the normally-closed contact and the normally-opened contact to the common contact in the unfastened position.