US Patent 7246854 Child vehicle seat having an adjustable harness system

A child vehicle seat includes a seat portion and a headrest assembly. The headrest assembly defines at least one belt aperture. The headrest assembly is movable in relation to the seat portion between an upper position and a lower position. The child vehicle seat further includes a harness system including (i) at least one shoulder belt portion extending through the at least one belt aperture defined in the headrest assembly, and (ii) a crotch belt assembly that is movable in relation to the seat portion between an extended position and a retracted position. Movement of the headrest assembly in relation to the seat portion from the upper position to the lower position causes the crotch belt assembly to move from the extended position to the retracted position.