Trash can assembly with locking lid

What is this patent about?

’433 is related to the field of household waste management systems, specifically focusing on foot-pedal operated trash cans. While pedal-actuated lids provide a hands-free way to dispose of refuse, they typically require constant pressure to remain open, which complicates tasks like changing liners or scraping large amounts of waste into the container. The invention addresses the need for a simple, integrated mechanism to hold the lid open without requiring the user to remain stationary at the pedal.

The underlying idea behind ’433 is to utilize the existing vertical motion of the lid’s actuation rod as a locking interface by integrating a multi-position guide into the container's frame. Rather than adding complex external latches, the invention leverages the lateral flexibility of the link rod, allowing it to be shifted into a dedicated notch or offset section of a guide slot when the lid is raised. This creates a mechanical interference that prevents the rod from descending, effectively propping the lid open using the rod's own vertical support strength.

The claims of ’433 focus on a trash can assembly where a support frame, extending around the periphery of the shell's top edge, serves as the primary housing for a locking slot. The independent claims specify that the link rod, which translates pedal movement to the lid, passes through this slot. The slot is designed with a specific lock section that engages the vertical length of the rod—at a point offset from its top end—to secure the assembly in an open state independently of the foot pedal.

In practice, the system operates by translating the user's foot pressure into an upward thrust of the internal rod, which pivots the lid open. Once the lid is elevated, the user manually nudges a stop member or the rod itself into a recessed portion of the L-shaped slot. This lateral shift moves the rod out of its primary travel path and into a 'parked' position. Because the rod is physically obstructed by the frame's geometry, the weight of the lid cannot force the rod back down, maintaining the open state for as long as necessary.

This approach differentiates itself from prior art by moving the locking mechanism to the interior periphery of the shell, specifically within the upper support frame. By using the rod itself as the locking bolt and the frame as the strike plate, the design eliminates the need for secondary external levers or lid-mounted props. The integration of the lock into the rod's natural travel path ensures that the transition between a standard pedal-release mode and a locked-open mode is achieved through a simple, intuitive lateral movement of the existing hardware.