Patent ID: 8872668

Claim:
An apparatus for detecting if a fastener moves from a first position to a different second position relative to an object; the apparatus comprising: a first connector for connecting a first side of a contact bridge to the fastener for movement in response to movement of the fastener; and a second connector for connecting a second side of the contact bridge to the object to remain stationary relative to the object; wherein one of the first and second sides of the contact bridge includes first and second spaced apart electrical conductors, and the other one of the first and second sides of the contact bridge includes a third electrical conductor; and wherein, when the first connector connects the first side of the contact bridge to the fastener for movement in response to movement of the fastener, and when the second connector connects the second side of the contact bridge to the object to remain stationary relative to the object, the third electrical conductor is positionable to contact the first and second electrical conductors when the fastener is in the first position, and the third electrical conductor is spaced apart from at least one of the first and second electrical conductors when the fastener is in the second position.