Patent ID: 7517016

Claim:
A vehicle child seat for allowing a child and an adult to interchangeably occupy a common seat area, said vehicle child seat comprising: a primary backrest having a hollow passageway formed therein, said primary backrest defining a shape of the uppermost section of a car seat, said primary back rest further having bottom ends spaced above a horizontal plane; a headrest section vertically adapted between raised and lowered positions, said headrest section having a lower portion housed within said passageway and an upper portion disposed above a top surface of said primary backrest; an auxiliary backrest pivotally connected to said primary backrest, wherein said auxiliary backrest is selectively articulated rearwardly of said primary backrest after said headrest section is elevated to an uppermost portion of said passageway; a base section coupled to said primary backrest and seated directly on the horizontal plane such that said base section remains disposed below said primary backrest, said base section having a hollow chamber formed therein and further having a trapdoor pivotally connected to an anterior end thereof, said base section defining a shape of the lowermost section of the car seat; and a baby seat section removably housed within said chamber and pivotally adaptable between vertical and horizontal positions, wherein said baby seat section pivots about a fulcrum axis defined anterior of said primary backrest; wherein said headrest section comprises a linear shaft traversing horizontally through said passageway and terminating exterior thereof, said linear shaft having opposed ends exposed on outer surfaces of said primary backrest; a plurality of vertical bars having opposed ends connected to said linear shaft and penetrating upwardly from said top surface of said primary backrest; and a headrest directly coupled to said bars respectively, wherein said linear shaft rises and falls within said passageway when said headrest is raised and lowered in such a manner that said auxiliary backrest is allowed to fit within said passageway after said linear shaft is elevated to the uppermost position, said auxiliary backrest having a groove formed along a top end thereof and receiving said linear shaft such that said auxiliary backrest is prevented from articulating rearwardly when said linear shaft is interfitted within said groove.