Patent ID: 7766423
Filing Date: 2010-08-03
Classification: B60N

Abstract:
1. A head restraint assembly comprising: a support member; a deployable member selectively movable between a retracted position and a deployed position; said deployable member being farther from the support member in the deployed position than in the retracted position; a link rotatably mounted with respect to the support member and rotatably mounted with respect to the deployable member; a shaft mounted with respect to the link for rotation with the link with respect to the support member, said shaft having a lip; and an active material member that is characterized by first and second ends; wherein the first and second ends are mounted with respect to the support member on opposite sides of the lip, and a center portion of the active material member engages the lip; wherein the first and second ends and the lip are sufficiently positioned with respect to one another such that the active material member is characterized by a curved shape; said active material being actuatable to rotate the shaft and thereby cause the deployable member to move from the retracted position to the deployed position.