Abstract: An undercarriage comprising a rectangular, tubular frame defining a plane, two supporting members having upper U-shaped sections and angled lower sections, a pair of axles, a pair of wheels, and a pair of locking devices. Each upper U-shaped section is pivotally attached to one of the end members of the frame with the base portion of the U-shaped section extending above the plane when the supporting members are in an unfolded position. Each lower section is fixed to an end of one of the legs of the upper section and extends below the plane. Each axle is attached to a lower end of one of the angled lower sections. Each wheel is rotatably mounted on one of the axles. Each locking device is interconnected between one of the end members of the frame and one of the supporting members to lock that supporting member in the unfolded position. The supporting members are entirely within the plane defined by the frame when in a folded position.

Abstract: A tamper-proof bottle closure is formed of a readily deformable material and is threadedly securable on a bottle. The closure includes a top portion from which a skirt depends and a security band which is detachably connected to the skirt along a circumferential line of spaced slots by bridges of material located between the slots. At least one of the bridges is wider circumferentially than the remaining bridges. At least one transverse score line is formed in the security band extending upwardly and terminating in the region of the line of slots. A weakened line is provided extending across at least one of the wide bridges in alignment with the slots. The security band can thus be completely detached from the skirt without leaving a burred edge on the skirt which is apt to injure the user's hand during repeated use of the closure.