Refuse receptacle with spring bias arrangement

What is this patent about?

’742 is related to the field of refuse management systems, specifically focusing on specialized waste bins designed for odor containment. In high-odor environments, such as those involving used diapers or medical waste, standard lids often fail to prevent gas exchange between the internal waste bag and the surrounding enclosure. This background context highlights a common failure in continuous-liner systems where gaps between the internal liner support and the outer frame allow unpleasant odors to bypass the lid and seep into the room.

The underlying idea behind ’742 is to eliminate the air gap between the internal waste liner and the top of the bin by using a dynamic, spring-loaded seal. Rather than relying on a static fit or a simple lid, the invention treats the internal liner holder as a floating component that is constantly pushed upward. By applying continuous vertical pressure, the system ensures that the top edge of the waste holder is physically pressed against the underside of the top frame, creating a mechanical gasket effect that traps odors within the bag itself.

The claims of ’742 focus on a refuse receptacle assembly that utilizes a movable internal holder supported by at least one biasing member. This biasing member, typically a set of coil springs, is positioned between a fixed internal ledge of the outer bin and a spring plate that carries the waste holder. The independent claims specifically protect the configuration where this upward force maintains a constant seal between the upper open end of the tubular holder and the upper frame member, regardless of the weight of the refuse inside.

In practice, the invention works by seating a tubular holder—which carries a fan-folded continuous sleeve—onto a spring-loaded platform. As the user deposits waste through the lid, the springs counteract the downward force, keeping the holder’s rim firmly seated against a tapered inner skirt on the frame. To ensure the seal remains consistent and the mechanism does not jam, the system incorporates vertical guides on the inner walls of the enclosure that prevent the spring plate from rotating or tilting during use.

This approach differs from prior solutions by moving away from passive lid seals, which often degrade or fail to cover the bypass area between the liner and the outer shell. By creating a pressurized interface between the holder and the frame, the ’742 patent ensures that even when the lid is opened, odors are restricted to the central column of the bin. Additionally, the spring mechanism provides a secondary benefit by lifting the holder toward the user when the frame is unlocked, making it significantly easier to replace the liner material.