Patent ID: 7237837

Claim:
A convertible car seat, comprising: a seating surface and a backrest which both run substantially perpendicular to a longitudinal plane (P); a support including two frames, which are symmetrical with respect to a defined perpendicular plane (P), which are both quadrilateral in shape and are positioned on either side of the seating surface along planes that are substantially parallel to the plane (P), the sides of the frames being made up of rigid elements, at least one of which is positioned along a plane that is generally horizontal, with the opposite rigid element located on one of the sides of the seating surface, the rigid elements being connected to each other by means of joints positioned at each of opposite ends along an axle and comprising a set of four axles substantially parallel to each other, in such a way that the support can be folded by pivoting the rigid elements around the axles in one direction of rotation on one end of the rigid element and in the same direction of rotation on the other end, the axles comprising the following when the convertible seat is in a seat configuration: a first axle that connects the rigid elements located in front of the seat to the substantially horizontal rigid elements, a second axle that connects the rigid elements located to the rear of the seat to the substantially horizontal rigid elements, a third axle and a fourth axle which connect the rigid elements located in front of the seat and the rigid elements located to the rear of the seat to the rigid elements located on either side of the seat wherein: at least one of the joints of the rigid elements is lockable in such a way as to lock the support in a given position, the seating surface is mounted lockably connected to the mentioned third axle, arms are placed on either side of the seat, along longitudinal planes, with a first end of each arm lockably connected to the fourth axle, and the backrest is mounted on the second end of arms by means of at least one lockable joint to form a fifth axle which is substantially parallel to the other axles, in order to unlock one or more of the lockable joints to enable the support, the seating surface the arms and the backrest to be placed in various positions, and locking one or more of the lockable joints enables the support, the seat, the arms and the backrest of the seat to be fixed in a given configuration.