Baby carriage convertible to a safety car seat

Claim 1

A baby carriage convertible to a safety seat comprising: a body assembly including a pair of side plates, seat and back plates fixedly interposed between the side plates, a foot rest plate disposed in front of the seat plate and pivotally interposed between the side plates, and a pair of body frames fixed to the side plates, said foot rest plate being moved between a horizontal position and a vertical position and having means for maintaining the horizontal position; a wheel assembly including a pair of front supporting legs which are pivotally connected at upper ends thereof to the side plates and fixed at lower ends thereof to a wheel shaft, a pair of rear supporting legs fixedly spaced from each other by a spacing bar, which are pivotally connected at upper ends thereof to the side plates and have at lower ends thereof horizontal shafts, connecting bars pivotally connected between middle portions of the front supporting legs and middle portions of the rear supporting legs, a pair of front wheels rotatably connected to the both ends of the wheel shaft, and a pair of rear wheels rotatably connected to the horizontal shafts of the rear supporting legs; a handle assembly including a pair of handle frames pivotally connected to middle portions of the side plates, a handle interposed between free ends of the handle frames, and an arm rest plate disposed below the handle and interconnected between the handle frames; and a locking assembly including a body plate disposed below the seat plate and pivotally connected between the side plates, and means for causing the body plate to be moved upward, said body plate being provided at a free end with locking means for gripping the spacing bar; whereby the spacing bar of the wheel assembly is released from the locking means of the locking assembly for allowing the wheel assembly to be retracted rearward and upward and means for allowing rotation of the handle assembly into a horizontal position from a vertical position for allowing the arm rest plate of the handle assembly to be moved to a generally horizontal use position when the carriage is converted the safety seat.