Reclining child car seat with adjustable head support

1. A seat with adjustable headrest comprising

a seat structure, a harness, a locking hinge, and a rack and pinion structure;

wherein the seat structure further comprises a bench, a backrest, and a headrest;

wherein the locking hinge attaches the backrest to the bench such that the backrest rotates relative to the bench;

wherein the seat with adjustable headrest is a child safety seat;

wherein the seat with adjustable headrest is a reclining structure;

wherein the rack and pinion structure forms a mechanical linkage between the backrest and the headrest;

wherein a cant is formed between the bench and the backrest;

wherein the cant is adjustable;

wherein the seat with adjustable headrest is further configured such that the headrest automatically adjusts as a function of the cant of the reclining structure of the seat with adjustable headrest.

2. The seat with adjustable headrest according to claim 1

wherein the locking hinge is a hinge structure that attaches the backrest to the bench such that the backrest rotates relative to the bench;

wherein the rotation of the backrest changes the cant between the backrest and the bench;

wherein the locking hinge further comprises a locking mechanism such that the locking hinge will lock the cant into a fixed position.

3. The seat with adjustable headrest according to claim 2 wherein the rack and pinion structure forms a mechanical linkage that adjusts the headrest as a function of the cant.

4. The seat with adjustable headrest according to claim 3 wherein the harness is a fastening structure.

5. The seat with adjustable headrest according to claim 4

wherein the seat structure comprises the bench, the backrest, and the headrest;

wherein the bench attaches to the backrest;

wherein the headrest attaches to the backrest;

wherein the seat structure is further defined with the cant.

6. The seat with adjustable headrest according to claim 5

wherein the bench forms a horizontal supporting surface;

wherein the backrest forms a vertical supporting surface.

7. The seat with adjustable headrest according to claim 6

wherein the backrest is a rotating structure;

wherein the backrest rotates from a roughly vertical position to a roughly horizontal position.

8. The seat with adjustable headrest according to claim 7 wherein the cant is an arc of a span between the horizontal supporting surface formed by the bench and the vertical supporting surface formed by the backrest.

9. The seat with adjustable headrest according to claim 8 wherein the rotation of the backrest is a mechanism that adjusts the cant.

10. The seat with adjustable headrest according to claim 9

wherein the headrest is a protective structure;

wherein the headrest mounts on the vertical supporting surface of the backrest.

11. The seat with adjustable headrest according to claim 10

wherein the headrest comprises a medial pad, a dexter head guard, and a sinister head guard;

wherein the dexter head guard attaches to a dexter side of the medial pad;

wherein the sinister head guard attaches to a sinister side of the medial pad.

12. The seat with adjustable headrest according to claim 11

wherein the medial pad forms a cushion that attaches to the vertical supporting surface of the backrest;

wherein the dexter head guard forms a rotating barrier;

wherein the sinister head guard forms a rotating barrier;

wherein the rack and pinion structure adjusts a span of a length between the dexter head guard and the sinister head guard during the use of the seat with adjustable headrest.

13. The seat with adjustable headrest according to claim 12

wherein the rack and pinion structure mounts in the backrest of the bench;

wherein the construction of the rack and pinion structure is such that the rotation of the backrest relative to the bench adjusts the span of the distance between the dexter head guard and the sinister head guard.

14. The seat with adjustable headrest according to claim 13

wherein the rack and pinion structure comprises a rack, a plurality of pinions, and a plurality of linked hinges;

wherein the rack is a toothed shaft structure;

wherein each of the plurality of pinions is a toothed gear structure;

wherein each of the plurality of pinions interacts with the rack such that the movement of the rack causes each of the plurality of pinions to rotate;

wherein the rack and the backrest are linked such that the rotation of the backrest relative to the bench causes the rack to move relative to the plurality of pinions;

wherein the rotation of each of the plurality of pinions causes the rotation of a head guard selected from the group consisting of the dexter head guard and the sinister head guard to rotate.

15. The seat with adjustable headrest according to claim 14 wherein each of the plurality of linked hinges attaches to a pinion selected from the plurality of pinions to the selected head guard such that: a) the rotation of the selected pinion rotates the associated linked hinge selected from the plurality of linked hinges; and, b) the rotation of the associated linked hinge rotates the head guard associated with the selected linked hinge.

16. The seat with adjustable headrest according to claim 15 wherein the rotation of the dexter head guard relative to the sinister head guard causes a span of a distance between the dexter head guard and the sinister head guard to vary.

17. The seat with adjustable headrest according to claim 16

wherein the plurality of pinions comprises a dexter pinion and a sinister pinion;

wherein the dexter pinion is a geared like structure that attaches a dexter linked hinge to the rack such that the motion of the rack rotates the dexter linked hinge;

wherein the sinister pinion is a geared like structure that attaches a sinister linked hinge to the rack such that the motion of the rack rotates the sinister linked hinge;

wherein the plurality of linked hinges attaches the dexter head guard and the sinister head guard to the medial pad such that the dexter head guard is distal from the sinister head guard.

18. The seat with adjustable headrest according to claim 17

wherein each of the plurality of linked hinges is a rotating fastening structure;

wherein the plurality of linked hinges comprises a dexter linked hinge and a sinister linked hinge;

wherein the dexter linked hinge is the hinge selected from the plurality of linked hinges that attaches the dexter head guard to the dexter edge of the medial pad;

wherein the sinister linked hinge is the hinge selected from the plurality of linked hinges that attaches the sinister head guard to the sinister edge of the medial pad;

wherein the dexter linked hinge is the hinge selected from the plurality of linked hinges that attaches the dexter head guard to the dexter pinion;

wherein the sinister linked hinge is the hinge selected from the plurality of linked hinges that attaches the sinister head guard to the sinister pinion.