Patent ID: 8162392

Claim:
A vehicle seat assembly comprising: a seatback frame; and an active head restraint system operatively supported by said seatback frame, said active head restraint system including an upper armature moveably mounted to said seatback frame, a head restraint mounted to said upper armature, and a lower armature operatively attached to said upper armature, said lower armature including an impact body and at least one transfer rod operatively mounted to said impact body and to said upper armature, and at least one ramp with at least one cam surface extending generally toward said upper armature, said transfer rod supported on said cam surface such that said transfer rod moves on said cam surface toward said upper armature, and said lower armature operable to move toward said upper armature in response to a predetermined force applied to said impact body and act on said upper armature to move said head restraint toward the occupant.