US Patent 9174737 Aircraft seat with translating seatback linkage pivot

An aircraft passenger seat configured to recline and including a seatpan pivotally attached to a seatback, a spreader defining a non-linear guide path controlling the seatpan angle as the seat reclines, translating seatback linkage defining a non-linear guide path controlling the seatback angle as the seat reclines, and a drive link arranged to translate horizontally relative to the spreader to drive seat recline motion.