Patent ID: 9682643
Date: 2017-06-20
CPC Classifications: B60N,B60R,B64D

Claim:
1. A passenger seat assembly comprising a plurality of passenger seats, wherein the passenger seat assembly comprises: (a) a plurality of spreaders, each spreader comprising an upper portion and a lower portion separated by a transitional region; (b) a plurality of seat backs, each seat back comprising a central panel and a pair of extensions coupled to a lower end of the central panel, wherein the pair of extensions are pivotally coupled to the upper portions of two of the plurality of spreaders; (c) a base structure comprising a forward base frame tube and an aft base frame tube, wherein the forward base frame tube and the aft base frame tube pass through a pair of apertures in the lower portion of each spreader; and (d) at least two leg assemblies, each leg assembly comprising a forward leg portion, wherein the forward base frame tube and the aft base frame tube pass through a pair of apertures in the forward leg portion; wherein the spreaders, base frame tubes, and leg assemblies are constructed and joined together to provide the passenger seat assembly with sufficient structural integrity to remain attached to an airframe after application of a 16 g-force load; wherein the transitional region of each spreader comprises a forward surface having a radius of curvature of about 3.5 to 3.7 inches and an aft surface having an angular profile configured so that the aft surface is located forward of a plane formed by a surface of each seat back in a fully upright position; and wherein the forward base frame tube is located at a lower height than the aft base frame tube so that an upper end of the forward leg portion of each leg assembly has a downward pitch in a forward direction between the aft base frame tube and the forward base frame tube.