Patent No. US7073677 (titled "Secure trash container assembly") on Jul 25, 2003. The application was issued on Jul 11, 2006.
’677 is related to the field of refuse management and, more specifically, to the design and assembly of modular, high-strength plastic trash enclosures. Traditional large-scale trash containers are often bulky to ship, difficult to assemble, or lack the structural integrity to withstand environmental stressors and animal interference. The background context involves the need for a container that combines the aesthetic appeal of permanent fixtures with the logistical efficiency of a knocked-down kit that can be assembled without specialized tools.
The underlying idea behind ’677 is the use of injection-molded panels featuring integrated snap-fit connectors that eliminate the need for separate metal fasteners while providing superior rigidity. By utilizing injection molding rather than blow molding, the inventor was able to incorporate internal cross-bracing, ribs, and gussets directly into the panels. This engineering approach ensures that the walls resist racking and buckling, creating a unified structure where the floor, walls, and lid assembly reinforce one another through interlocking geometry.
The claims of ’677 focus on a multi-panel kit comprising a floor, four side walls, and a specialized two-piece cover assembly. A key feature of the independent claims is the specific geometry of the panel edges, which include elongated contoured interlock posts and corresponding sockets that mate in a perpendicular relationship. The claims also highlight a cover system that serves a dual purpose: it acts as a tensioning mechanism to secure a trash bag in an open position and includes a secondary hinged lid for daily refuse disposal.
In practice, the container is assembled by snapping the side panels into the floor and each other using spring-tab detents that lock into pre-formed apertures. The cover assembly is particularly functional, featuring a separable hinge design that allows the lid to be easily attached or removed when held at a specific angle, yet remains securely trapped and non-removable when closed. This geometry ensures that the container remains weather-resistant and animal-proof without requiring complex mechanical latches or heavy hardware.
This invention differentiates itself from prior art by moving away from complex internal linkages and flimsy one-piece molded bodies. Unlike previous designs that required side-access doors to avoid lifting heavy bags, the ’677 design uses a two-piece cover that simplifies bag replacement while maintaining a high-strength frame. The integration of structural feet and interlocking sockets across all six primary components creates a rigid box structure that provides the durability of a permanent commercial bin in a portable, consumer-friendly format.
In the early 2000s when ’677 was filed, the production of large-scale refuse enclosures was typically implemented using blow molding or rotational molding techniques, which often resulted in single-piece, hollow-walled structures. At a time when systems commonly relied on fully assembled, rigid bodies to ensure structural integrity, the distribution of such products was constrained by high shipping volumes and the associated logistical costs of transporting air space. When hardware or software constraints made the precision molding of complex interlocking geometries non-trivial, manufacturers frequently utilized separate metal fasteners, external brackets, or secondary extruded connectors to join individual panels, as integrated snap-fit interfaces often lacked the necessary rigidity to resist racking or panel separation under heavy loads.
The disclosed invention addresses the technical problem of providing a high-strength, aesthetically pleasing trash container that can be shipped in a compact, knocked-down state and assembled without tools. The architectural solution involves a modular panel system where injection-molded side, front, back, and bottom panels utilize integrated locking posts and contoured sockets to form a rigid, interlocking enclosure. This integration achieves a technical effect of increased structural rigidity through the use of internal cross-bracing and gussets—features enabled by the injection molding process—while eliminating the need for separate mechanical fasteners. Furthermore, the assembly enables a specific capability by incorporating a two-piece cover system that functions as both a lid and a bag retainer, overcoming the constraint of requiring internal metal frames or secondary hardware to secure flexible liners.
This patent contains a total of 20 claims, with claims 1, 6, and 8 serving as the independent claims. The independent claims focus on the structural assembly of a shippable trash container kit, specifically detailing the interlocking panel system, the mechanical connections between the side and back panels using contoured posts and sockets, and the specific hinge mechanism that allows the cover to be removable only when in an open position. The dependent claims serve to further define the physical characteristics of the individual components, such as the floor panel reinforcement, the specific geometry of the locking posts, the integration of feet for stability, and the latching mechanisms for the lid and cover.
Definitions of key terms used in the patent claims.
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