A cart for maintaining items, which are used in a cleanroom, at a predetermined cleanliness level. The cart includes a cabinet having an internal cavity and opposed first and second internal walls. The cart further includes a shelf affixed horizontally within the cavity to form top and lower compartments within the cabinet. In addition, a lower horizontal track is affixed to the cabinet above the top compartment. A lower door is slidably affixed within the lower track. Additionally, the cart includes an upper horizontal track affixed to the cabinet above the lower track and an upper door slidably affixed within the upper track, wherein the upper and lower doors are movable in a horizontal direction above the top compartment. The top compartment is substantially isolated from contamination when the upper door contacts the first wall and the lower door contacts the second wall or when the upper door contacts the second wall and the lower door contacts the first wall.

An anti-tipping device for a shopping cart having a pair of non-pivotal wheels and a pair of pivotal wheels. The anti-tipping device comprises a pair of concave downward extending anti-tipping members clamped to the outer surface of the lower frame adjacent to the pivotal wheels. The lower end of the anti-tipping members extend close to but not touching the cart support surface. When the cart is tipped sideways at least one of the anti-tipping members contacts the cart support surface preventing any further tipping of the cart.

This disclosure describes a work site utility carrier that configures into a dolly and hand truck in its retracted mode and a work bench in its elevated mode. A lower receptacle formed as part of a chassis with wheels, and an upper receptacle are pivotally connected by a unique positioning apparatus. In a retracted position the two receptacles lie side-by-side with their top surfaces essentially planar. In this mode, the carrier serves as a dolly or a hand truck. In the elevated mode the second receptacle pivots up to station securely above the chassis, The top of the second receptacle becomes a work bench. The receptacles may comprise tool boxes. One or both tool boxes may include tool drawers. Unique latching mechanisms positively secure the carrier in either mode. The latching in an elevated mode is aided by the weight of the upper receptacle.

A mobile cart, comprising a frame module including a plurality of frame members. The frame members include a perimeter frame member. At least one caster wheel supporting member, supporting at least one caster wheel, and at least one handle member are attached near a first end of the perimeter member. Right and left main supporting wheel members are mounted near the apex of the perimeter member. A floor member is supported by the frame module. A beverage component container retaining assembly is included in the floor member. A cooling and dispensing module includes a beverage chilling assembly and a dispensing unit including at least one dispensing valve; or a liquid receiving and dispensing module holds a liquid to be dispensed and maintains the liquid substantially at a desired temperature. A substantially vertical side member extends at least partially around the cart.

A collapsible coin carrying cart for allowing users to easily carry coins won at casinos. The collapsible coin carrying cart includes a cart assembly including wheels, a pair of leg members mounted upon said wheels, and a plurality of first and second linkage members interconnecting the leg members; and also includes a plurality of coin storage units being removably mounted to said the assembly; and further includes fasteners being attached to the storage units for removably attaching the storage units to the cart assembly.