Recycling container and method of manufacture

What is this patent about?

’950 is related to the field of waste collection containers, specifically those designed for recycling. The invention addresses the practical difficulties of maintaining a secure fit for flexible bag liners in public receptacles while ensuring that the cover and base remain compatible and aesthetically unified. Traditional containers often suffer from liners slipping or covers that are difficult to manufacture with precise tolerances, leading to poor fits that expose the interior to weather or allow litter to bypass the liner.

The underlying idea behind ’950 is to utilize a monolithic molding process to ensure perfect geometric alignment between a container’s base and its cover. By forming the entire unit as a single piece joined by a sacrificial web of material, the inventor ensures that both components undergo identical thermal shrinkage during the cooling phase. This engineering approach eliminates the common industry problem of mismatched parts caused by separate production runs, allowing for a high-precision interface that would otherwise be difficult to achieve with standard blow molding or rotational molding techniques.

The claims of ’950 focus on a waste container assembly characterized by a base receptacle and a removable cover that are initially produced as a one-piece integral unit. The structural definition centers on the inclusion of a temporary web of material that connects the cover to the base during the molding stage. Once this web is removed, the resulting components possess perfectly mating surfaces, specifically an upper lip and rim system on the base that provides multiple peripheral contact zones to lock a flexible bag liner in place against the interior of the cover.

In practice, the invention works by providing a tiered mouth structure on the base receptacle, featuring a supporting ledge and at least one rim portion. When the cover is seated, it creates a frictional interference fit at two or more longitudinally separated contact areas. This multi-point engagement serves a dual purpose: it creates a weather-resistant seal and acts as a mechanical clamp for the bag liner, preventing it from collapsing under the weight of deposited waste. The design also incorporates a flexible internal link that tethers the cover to the base, which can also be used as a pull-cord to help lift a full liner out of the receptacle.

This approach differs from prior solutions by moving away from separate hinged attachments or loosely fitted lids that rely on gravity alone. By integrating the simultaneous shrinkage principle into the manufacturing method, the invention achieves a level of fit that allows for specialized features like a multi-flap, resiliently deformable door. This door is tuned to accept rigid recyclable containers while resisting soft, non-recyclable litter, effectively pre-sorting waste at the point of disposal through mechanical resistance rather than complex electronic sensors.