Abstract: A box includes first and second spaced apart side walls, and first and second ends walls connected to opposite ends of the side walls. Each side wall has an elongated slot at a lower end of an inner surface thereof, and each end wall has an elongated slot at a lower end of an inner surface thereof, with the elongated slots of the side walls and the end walls all being coplanar. First and second bottom boards are inserted in the elongated slots of the side walls to form a bottom wall of the box, and a closure member is inserted into a space between the first and second bottom boards to lock the first board in the elongated slots of the side walls and the first end wall and to lock the second board in the elongated slots of the side walls and the second end wall.

Abstract: A playpen or crib includes a frame with a fabric enclosure connected thereto. Floor supports of the frame have inner ends which are connected to each other by a hub that permits swinging of the floor supports in a horizontal plane from a use position to a folded position. Uprights are connected by hinges to the outer ends of the floor supports. Bendable side and end rails interconnect the tops of the uprights. The fabric enclosure has sleeves for accommodating the uprights and the cross-members to define a space. A stiffened mattress is provided in the space and is supported by the floor supports in their use position. One of the cross-members can be removed or is provided with a mechanism to permit its elongation. In this way, the frame can be folded with all other parts permanently connected to each other and without removing the fabric enclosure.

Abstract: A folding tricycle comprises a main frame having a rear frame member pivotally connected to a rear end thereof and a front fork pivotally connected to a front end thereof. A pair of wheels is rotatably mounted to the rear frame member and a front wheel is rotatably mounted to the front fork. Handle bars are pivotally mounted about a substantially horizontal axis to the front forks to move from a raised operating position to a lowered storage position. Locks are provided on the front and rear of the main frame member to lock the handle bars in their raised operable position and also to lock the rear frame member in an operable position, the rear frame member having a storage position with the wheels and rear frame member pivoted under the main frame member.