Child restraint for vehicle

1. A child restraint comprising

a vehicle seat,

a juvenile holder including a seat-support base arranged to set in a stationary position on the vehicle passenger seat and to support a juvenile seat in a stationary orientation relative to the vehicle passenger seat, the seat-support base including a rotatable foundation and a seat mount adapted to anchor the juvenile seat in a stationary position relative to the rotatable foundation and coupled to the rotatable foundation to move therewith about a horizontal rotation axis and relative to the underlying vehicle passenger seat, the rotatable foundation having a downwardly and rearwardly facing convex curved bottom wall comprising a curved lower exterior section adapted to mate with an upwardly facing portion of a seat bottom of the vehicle passenger seat when the seat-support base occupies the stationary position on the vehicle passenger seat and a curved upper exterior section adapted to mate with a forwardly facing portion of a seat back of the vehicle passenger seat when the seat-support base occupies the stationary position on the vehicle passenger seat.

2. The child restraint of claim 1 , wherein the convex curved bottom wall has a semi-cylindrical shape.

3. The child restraint of claim 1 , wherein the seat-support base further includes a seat-mount guide coupled to the rotatable foundation and to the seat mount and configured to guide the seat mount to move along an arcuate path relative to the rotatable foundation about an axis of rotation during movement of the seat mount induced by a caregiver.

4. The child restraint of claim 3 , wherein the seat-support base further includes a seat-mount retainer configured to be activated by a caregiver to block rotation of the seat mount relative to the rotatable foundation along the arcuate path.

5. The child restraint of claim 1 , wherein the seat-support base further includes level-indicator means for indicating rotational orientation of a juvenile seat anchored in a stationary position on the seat mount in response to rotation of the rotatable foundation of seat-support base about a horizontal axis of rotation relative to an underlying vehicle passenger seat before the curved lower exterior section of the convex curved bottom wall is mated with an upwardly facing portion of a seat bottom of the vehicle passenger seat and the curved upper exterior section of the convex curved bottom wall is mated with a forwardly facing portion of a seat back of the vehicle passenger seat to establish the stationary position of the seat-support base on the vehicle passenger seat so that a predetermined orientation of a juvenile seat supported on the seat-support base is achieved before seat-support base is retained in the stationary position on the vehicle passenger seat using a vehicle seat belt associated with the vehicle passenger seat.

6. The child restraint of claim 5 , wherein the convex curved bottom wall has a semi-cylindrical shape.

7. The child restraint of claim 5 , wherein the convex curved bottom wall subtends an angle of about 140°.

8. The child restraint of claim 5 , wherein the seat-support base further includes a seat-mount guide coupled to the rotatable foundation and configured to guide the seat mount to move along an arcuate path relative to the rotatable foundation about the horizontal axis of rotation.

9. The child restraint of claim 8 , wherein the seat-support base further includes a seat-mount retainer configured to be activated by a caregiver to block rotation of the seat mount relative to the rotatable foundation along the arcuate path.

10. A child restraint comprising

a juvenile holder including a seat-support base adapted to set in a stationary position on a vehicle passenger seat and adapted to support a juvenile seat in a stationary orientation relative to the vehicle passenger seat, the seat-support base including a rotatable foundation and a seat mount adapted to anchor the juvenile seat in a stationary position relative to the rotatable foundation and coupled to the rotatable foundation to move therewith, the rotatable foundation having a downwardly and rearwardly facing convex curved bottom wall comprising a curved lower exterior section adapted to mate with an upwardly facing portion of a seat bottom of the vehicle passenger seat when the seat-support base occupies the stationary position on the vehicle passenger seat and a curved upper exterior section adapted to mate with a forwardly facing portion of a seat back of the vehicle passenger seat when the seat-support base occupies the stationary position on the vehicle passenger seat,

wherein the curved lower and upper exterior sections of the convex curved bottom wall share a common center of curvature.

11. A child restraint comprising

a juvenile holder including a seat-support base adapted to set in a stationary position on a vehicle passenger seat and adapted to support a juvenile seat in a stationary orientation relative to the vehicle passenger seat, the seat-support base including a rotatable foundation and a seat mount adapted to anchor the juvenile seat in a stationary position relative to the rotatable foundation and coupled to the rotatable foundation to move therewith, the rotatable foundation having a downwardly and rearwardly facing convex curved bottom wall comprising a curved lower exterior section adapted to mate with an upwardly facing portion of a seat bottom of the vehicle passenger seat when the seat-support base occupies the stationary position on the vehicle passenger seat and a curved upper exterior section adapted to mate with a forwardly facing portion of a seat back of the vehicle passenger seat when the seat-support base occupies the stationary position on the vehicle passenger seat,

wherein the seat-support base further includes level-indicator means for indicating rotational orientation of a juvenile seat anchored in a stationary position on the seat mount in response to rotation of the rotatable foundation of seat-support base about a horizontal axis of rotation relative to an underlying vehicle passenger seat before the curved lower exterior section of the convex curved bottom wall is mated with an upwardly facing portion of a seat bottom of the vehicle passenger seat and the curved upper exterior section of the convex curved bottom wall is mated with a forwardly facing portion of a seat back of the vehicle passenger seat to establish the stationary position of the seat-support base on the vehicle passenger seat so that a predetermined orientation of a juvenile seat supported on the seat-support base is achieved before seat-support base is retained in the stationary position on the vehicle passenger seat using a vehicle seat belt associated with the vehicle passenger seat,

wherein the curved lower and upper exterior sections of the convex curved bottom wall share a common center of curvature.

12. A process for installing a juvenile holder on a vehicle passenger seat, the process compromising the steps of

arranging a juvenile holder including a seat-support base adapted to engage and support a juvenile seat in a temporary position on a vehicle passenger seat including a seat bottom and a seat base extending upwardly away from the seat bottom,

rotating the seat-support base about a horizontal axis of rotation while the seat-support base overlies the seat bottom until a level indicator associated with the juvenile holder indicates that a predetermined orientation of the juvenile holder relative to the vehicle passenger seat has been achieved,

engaging a convex curved bottom wall of the seat-support base with an upwardly facing portion of the seat bottom and a forwardly facing portion of the seat back, and

anchoring seat-support base in a stationary position on the vehicle passenger seat using a vehicle seat belt associated with the vehicle passenger seat to retain the juvenile holder in the predetermined orientation on the vehicle passenger seat so that a juvenile seat mounted on the seat-support base is retained in a stationary orientation relative to the vehicle passenger seat.

13. The process of claim 12 , wherein the seat-support base includes a rotatable foundation having the convex curved bottom wall and a seat mount coupled to rotate with the rotatable foundation during rotation of the seat-support base about the horizontal axis of rotation and independently relative to the rotatable foundation about the horizontal axis of rotation, the convex bottom wall includes a curved lower exterior section that engages the upwardly facing portion of the seat bottom during the engaging step and a curved upper exterior section that engages the forwardly facing portion of the seat back during the engaging step.

14. The process of claim 13 , wherein the level indicator is coupled to the seat mount to rotate therewith about the horizontal axis of rotation during the rotating step.

15. The process of claim 12 , wherein the level indicator is coupled to the seat-support base to rotate therewith about the horizontal axis of rotation during the rotating step.

16. The process of claim 15 , wherein a juvenile seat is coupled to the seat-support base to rotate therewith about the horizontal axis of rotation during the rotating step.

17. The process of claim 12 , wherein the seat-support base includes a rotatable foundation having a convex curved bottom wall and a seat mount engaged to the rotatable foundation for movement relative to the rotatable foundation and the rotating step comprises the steps of rotating the rotatable foundation about the horizontal axis of rotation and rotating the step mount about the horizontal axis of rotation relative to the rotatable foundation.