US Patent 11834847 Load distribution and absorption underlayment system with transition features

A load distributing and absorbing system that lies below a barrier layer that is exposed to percussive and/or point-applied forces. The load distributing and absorbing system has one or more load distributing and absorbing tiles. At least some of the tiles have an underlayment infrastructure positioned below a barrier layer. The underlayment infrastructure includes one or more hat-shaped absorbing members. Each has a ceiling primarily for load distribution and a curvilinear wall primarily for load absorption extending from the ceiling. A transition feature is provided to smoothly graduate from one height and type of load distributing and absorbing tile to a load distributing and absorbing tile of another type and height. He system distributes and absorbs forces applied to the barrier layer over a broad area when applied either on a seam between adjacent tiles or within a tile.