Patent ID: 7188894

Claim:
An automotive actuation assembly for use in an automotive seat assembly having a seatback positionable in a plurality of seatback angles, said automotive actuation assembly comprising: a motion translation element pivotably mounted within said seatback, said motion translation element including a back engagement portion and a translation portion, said back engagement portion movable between a back engagement stable position and a back intrusion position, said translation portion movable from a translation stable position to a translation actuated position, said motion translation element pivoting to move said translation portion into said translation actuated position in response to said back engagement portion moving into said back intrusion position; a intermediary element rotatably attached to said translation portion, said intermediary element movable between an intermediary stable position and an intermediary actuated position, said intermediary element additionally movable between a disengagement position and a engagement position, said intermediary element biased towards said disengagement position; a momentum cam assembly in communication with said intermediary element, said momentum cam assembly moving said intermediary element into said engagement position during vehicle impact, said momentum cam assembly including a biasing weight in communication with a liquid damper element, said liquid damper allowing said momentum cam assembly to adapt to the plurality of seatback angles; a trigger arm positioned within said seatback, said trigger arm engaging said intermediary element when said intermediary element is in said engagement position, said trigger arm moving into a trigger deployed position in response to said back engagement portion entering said back intrusion position only when said intermediary element is in said engagement position; and a seatback impact response device, said trigger arm actuating said seatback impact response device when said trigger arm moves into said trigger deployed position.