US Patent 9463720 Child safety seat with safety belt adjustment mechanism

A child safety seat assembly includes a seat shell that is secured to a vehicle seat by way of a standard safety belt system, and a belt adjustment mechanism that facilitates adjusting the horizontal belt path taken by the standard safety belt through the safety seat assembly such that the horizontal belt path aligns with a child's center of gravity (CG). In a first fixed state, the belt adjustment mechanism generates a lower horizontal belt path that is a relatively short distance from the seat base portion, thereby optimizing the seat assembly for securing shorter children or infants having lower CGs. As a child grows, the belt adjustment mechanism is adjusted into a second fixed state that maintains the horizontal belt path at a relatively long distance from the seat base portion, thereby optimizing the seat assembly for securing taller children having higher CGs.