The invention is directed to a meal tier system. The system provides a plurality of cylindrical meal containers which stack neatly in tiers, and are removably affixed to a side-mounted spindle. Each container provides a watertight lid and may be individually swiveled around the axis of the spindle. The containers are dishwasher safe and may be insulated. Optionally, a large, sturdy bag with a carrying handle may be provided, such that the entire system, with all containers filled with food, may be fully assembled and securely carried in the bag with one hand.

Embodiments of this disclosure include a rigid tray container and methods and equipment for using the rigid tray container in batched process operations. In one embodiment, a mass container is sized and dimensioned to receive one or several rigid tray containers. In other embodiments, equipment is configured to lid/unlid, secure, stack, load/unload, and buffer rigid tray containers. In other embodiments, equipment is configured to stack and stage mass containers. In some embodiments, methods are provided for batch processing items.

A pot or pan lid is configured for stacking with identical or differently sized lids that have an identical handle or knob with a dimple on the upper surface. The side of the lid opposite the handle has a complimentary protrusion configured to stably engage the dimple. The edge of the knob may extend laterally to correspond with the lid curvature to also support a similar lid on the knob perimeter that is distal from the dimple. The engaged central dimple and more distal perimeter of the knob provide for stable stacking of a plurality of lids in a level arrangement that avoids one or more lids tipping over.

A container includes trays having a substantially identical profile. For each tray, the tray includes a rim that includes a proximal segment, a bead segment, and at least one vent channel defined in the proximal segment, the bead segment has an upwardly-extending member and a downwardly-extending member, the upwardly-extending member defines a first cavity, and the downwardly-extending member defines a second cavity. When the trays are engaged to close the container, the upwardly-extending member of the first tray is received in the second cavity of the second tray, the upwardly-extending member of the second tray is received in the second cavity of the first tray, the first and second trays define an interior volume of the container, the proximal segments of the rims of the first and second trays are in face-to-face contact to substantially seal the interior volume, and each vent channel is in communication with the interior volume.

In an example embodiment, there is disclosed herein a modular toolbox that is designed and organized for the storage and transport of painting tools. The modular toolbox has modules that are separably stacked and is designed to include storage for painting tools such as, for example, brushes, roller frames, roller covers, putty knives, lights, and an extension pole with compartments allowing for the storage and transport of personal items. In particular embodiments, the modular toolbox includes specific storage capabilities for wet tools so that they can be stored and transported to a different location for cleaning.

A foldable container includes a bottom, side walls that can be folded in, a lid, a closure element that can be moved relative to the lid, at least one first closure element mating piece, and at least one second closure element mating piece. The at least one second closure element mating piece is provided on a portion of the side walls that faces the bottom and/or on the bottom in such a way that, in a storage position of the lid, the at least one second closure element mating piece can interact in a form-fitting manner with the closure element in order to lock the lid in the storage position with the side walls folded in.

A container system includes a first container including a bottom wall, at least one sidewall, and an open top, with a plurality of indented recesses formed in the bottom wall. A first lid closes the open top of the first container. A second container includes a bottom wall, at least one sidewall, and an open top. A second lid closes the open top of the second container, with a push indicator structure formed at a center portion of the second lid, and with a plurality of registration bumps formed about the push indicator structure. The first container is stackable on the second lid such that (i) each of the registration bumps in the second lid is aligned with an adjacent one of the recesses in the bottom wall of the first container and (ii) surfaces of the registration bumps are spaced from surfaces of the adjacent recesses.

A disposable dual beverage receptacle includes of at least two fluid retentive chambers. A top chamber and a bottom chamber, the top chamber is connected with the bottom chamber using its base connector. The base connector has mechanisms for mounting and dismounting the bottom chamber. The bottom chamber is a beverage can.

A jobsite communications center including a communications module including an electrical power source, at least one speaker and at least one antenna and a toolbox-like housing for enclosing the communications module and having a handle and first and second connection assemblies, the first connection assembly enabling readily-disconnectable and reconnectable stacking interconnection of the communications center with tool boxes, the second connection assembly enabling readily-disconnectable and reconnectable mounting of the communication center on a toolbox-carrying cart in a manner similar to connection of toolboxes thereto.

Embodiments of this disclosure include a rigid tray container and methods and equipment for using the rigid tray container in batched process operations. In one embodiment, a mass container is sized and dimensioned to receive one or several rigid tray containers. In other embodiments, equipment is configured to lid/unlid, secure, stack, load/unload, and buffer rigid tray containers. In other embodiments, equipment is configured to stack and stage mass containers. In some embodiments, methods are provided for batch processing items.