Abstract: This invention relates to an adjustable child-restraint seat for a vehicle comprising a seat shell, a harness panel, and a restraint harness, The seat shell has a top-portion formed to include two spaced-apart belt-receiving openings. The harness panel consists of a harness casing, a slot panel, an adjustable anchor-point shaft and a spring biased medium that retains the shaft in the corresponding slot of said slot panel . The restraint harness is coupled with the adjustable anchor-point shaft and couples with the restraint coupler which is attached to the bottom-seat portion to provide an adjustable shoulder harnessing system. The apparatus allows the user to easily adjust the height of the shoulder harness from the front of the seat shell.

Abstract: Within a common tumbler chamber an adjacent plurality of dragged lock tumblers travel axially to an alignment arrangement, are returned to a constant misalignment arrangement by a common tumbler returning means, and are adaptable to couple a centrally rotatable lock plug to and from a lock cylinder. In certain embodiments, ribbed split-pin lock tumblers couple a splined plug to and from a splined cylinder, while in other embodiments non-ribbed split-pin lock tumblers couple a plug to a cylinder. Lock tumblers are also returned to constant misalignment by a plurality of biased members each of which is offset in spaced recesses in the surface of a common tumbler chamber.