Abstract: A phase transformational cellular material, including a plurality of bistable cells, each respective bistable cell operationally connected to at least one other respective bistable cell. Each bistable cell enjoys a first stable phase and a second stable phase. The first stable phase is a first geometric configuration and the second stable phase is a second geometric configuration different from the first geometric configuration. An energy transaction is required to shift each respective cell between stable phases. A mechanical energy transaction is required to shift from the first to the second phase, while a thermal energy transaction is required to shift from the second to the first phase.

Abstract: A flexible mat system, including a plurality of base platforms, each respective base platform having a first pattern of phase transforming columns and voids extending from a respective flat member, and a plurality of plane-engaging runway platforms, each respective plane-engaging runway platform having a second, reversed pattern of phase transforming columns and voids extending from a respective flat member such that each respective plane-engaging runway platform is lockingly engagable to a respective base platform to yield a landing segment with parallel top and bottom flat members. Each respective base platform is an aluminum/steel composite. Each respective phase transforming column is further comprised of a plurality of stacked operationally connected phase transforming cellular members. Each respective cell further comprises six hexagonally spaced support members defining six hexagonally arrayed sides, with two opposing sides define x-shaped struts extending between adjacent support members.

Abstract: Active material actuated headrest assemblies and their methods of operation are described herein. The headrests include an active material incorporated in a frame member, a bag, gear device, or the like, wherein the active material actuates upon receipt of an activation signal.

Abstract: A seat assembly includes an active material in operative communication with a seat surface configured to undergo a change in at least one property upon receipt of an activation signal, wherein the change in at least one property is effective to change at least one feature of the seat surface.