US Patent 8640289 Infant head cradle with controlled head movement

An infant head cradle assembly including a bed rest that includes a groove in a bottom surface of the bed rest, a head rest that includes a housing component extending from a bottom of the head rest, and a receptacle at a center of the housing component, a base extending from the bed rest to provide support to the head rest. The base includes a receptacle that includes a hole, and a bed rest attachment adjacent to the receptacle. The assembly further includes a bearing retainer assembly that includes a plurality of ball bearings that facilitate a rotational movement of the head rest while the head rest is seated on the bearing retainer assembly. The housing component restricts movement of the head rest from extending further than a range of approximately 20 degrees from front to back and approximately 40 degrees from left to right.