Abstract: A re-settable vehicle seat belt pre-tensioner apparatus is disclosed having a first member engagable with a second member that is moveable relative to the first member, and re-settable in response to various sensed driving conditions to pretension the seat belt around the operator and return to a non pre-tensioned status when the driving conditions have passed. The apparatus may be operated by positioning the belt for use; determining whether the seat belt buckle is in use; locking the pre-tensioner and lowering the seat belt buckle below the seat occupation plane; determining whether a threshold vehicle seat belt pre-tension load has been met; raising the belt buckle to a design position, unlocking the retractor; determining whether a threat event is imminent and locking the retractor; lowering the vehicle seat buckle relative to the plane of occupation, determining whether a crash event is occurring, and if yes, deploying a pyrotechnic deployment to secure the occupant in the seat.

Abstract: An apparatus includes a seat back having an outer surface that selectively contacts a seat occupant and a head restraint extending from the seat back that has a head restraint portion that selectively contacts the seat occupant. The head restraint portion is moveable between a forward position and a rearward position. The apparatus also includes a head restraint control assembly having an actuator, a lock mechanism, and a lock mechanism resetting device. The actuator transfers an actuation force to the head restraint portion for initiating movement of the head restraint portion from the rearward position to the forward position. The lock mechanism selectively restrains the headrest portion from moving from the forward position to the rearward position.