Trash can assembly

What is this patent about?

’060 is related to the field of household waste containers, specifically focusing on the mechanical architecture of pedal-actuated trash cans. It addresses the common engineering challenges of loud operation, mechanical wear from metal-on-metal friction, and the ergonomic difficulties associated with removing internal liners without making contact with waste surfaces.

The underlying idea behind ’060 is a split-lid geometry combined with a dampened linkage system that optimizes both space and durability. By utilizing two elongated lid portions that pivot away from each other along the longer side walls of the shell, the design reduces the vertical clearance required for opening while distributing the mechanical load across a more stable frame. The invention further integrates a non-metal interface within the hinge and linkage points to eliminate the grinding and noise typical of traditional all-metal assemblies.

The claims of ’060 focus on a shell with an elongated configuration where the first and third side walls are parallel and longer than the second and fourth walls. The independent claims specifically protect a support frame secured to the top edges of these walls, featuring elongated slots that house the hinge sleeves of two separate lid portions. This arrangement ensures that the entire hinge mechanism remains within the perimeter of the frame, maintaining a flush profile while enabling the split-lid opening motion.

In practice, the assembly utilizes a pedal bar connected to a pair of lifting rods that translate foot pressure into a vertical force, pushing the lid portions open. A rotary motion damper is coupled to the pedal bar via a toothed bar and damping wheel, which provides resistance only during the closing phase. This ensures the lids descend slowly and silently under the influence of gravity and spring tension, preventing the common 'slamming' effect found in simpler pedal-operated bins.

The design differentiates itself from prior art through its integrated support frame and the use of non-metal inserts. By placing a plastic tube inside the metal hinge sleeve and using plastic washers at the rod-to-bracket connection points, the invention creates a friction-reduced pivot that prevents squeaking and material fatigue. Additionally, the frame includes scalloped grooves that allow a user to lift the inner liner by its lip, providing a sanitary grip point that avoids contact with the trash bag or the liner's interior surfaces.