Auxiliary seat for child

Claim 1

IN A CHILD''S SEAT ADAPTED FOR DETACHABLE MOUNTING ON AN AUTOMOBILE SEAT OF THE TYPE INCLUDING A SEAT CUSHION COMPONENT AND A BACK CUSHION COMPONENT PROVIDED WITH A RIGID FRAME MEMBER DISPOSED PARALLEL TO AND CLOSELY ADJACENT TO THE REAR SURFACE OF THE SEAT CUSHION; SAID CHILD''S SEAT COMPRISING A BASE COMPONENT HAVING A PORTION ADAPTED TO BE SUPPORTED BY THE AUTOMOBILE SEAT CUSHION COMPONENT AND SAID PORTION OF SAID BASE COMPONENT INCLUDING A REARWARD EXTENSION TERMINATING IN AN UPWARDLY TURNED END ENGAGEABLE IN REAR OF THE RIGID FRAME MEMBER OF THE AUTOMOBILE BACK CUSHION WHICH IS ADJACENT TO THE AUTOMOBILE SEAT CUSHION, A COLLAPSIBLE SEAT STRUCTURE INCLUDING A BACK SUB-ASSEMBLY AND A SEAT SUB-ASSEMBLY PIVOTALLY MOUNTED ON SAID BASE COMPONENT AND MOVABLE AS A UNIT ON SAID PIVOTAL MOUNTING FROM A COLLAPSED POSITION GENERALLY PARALLEL TO THE AUTOMOBILE SEAT CUSHION ENGAGING PORTION OF SAID BASE COMPONENT TO AN ERECTED POSITION IN WHICH THE BACK PORTION OF SAID BACK AND SEAT ASSEMBLY IS DISPOSED SUBSTANTIALLY AT RIGHT ANGLES TO SAID BASE COMPONENT FOR ENGAGEMENT WITH THE AUTOMOBILE SEAT BACK CUSHION, AND MEANS EXTENDING BETWEEN SAID BASE COMPONENT AND SAID BACK AND SEAT ASSEMBLY MANUALLY OPERABLE TO RELEASABLY LOCK SAID BACK AND SEAT ASSEMBLY IN SAID ERECTED POSITION ON SAID BASE COMPONENT AND SIMULTANEOUSLY POSITIONING SAID UPWARDLY TURNED END IN REAR OF THE RIGID FRAME MEMBER OF THE AUTOMOBILE BACK CUSHION WHICH IS ADJACENT TO THE AUTOMOBILE SEAT CUSHION.