US Patent 8727439 Integrated single, multiple and rolling car seat systems

Apparatus is provided for integrated, single and multiple person vehicle car seats, modular car seat systems, dual person car seats, variable base height and width car seats, car seat-inserts inserted into another car seat, foldable, for use in a land, sea or air vehicle, mounted onto the vehicle's built-in seat and used for securing a car seat user within a vehicle's regular seating positions. Car seat systems include components enabling addition or removal of seating positions for a desired number of car seat users as needed, limited only by available width and height space of the vehicle seat onto which it is mounted.