Trash can with power operated lid

What is this patent about?

’676 is related to the field of power-operated receptacles, specifically automated trash cans equipped with motorized lids. Traditional motion-sensing lids often suffer from reliability issues, such as false triggers caused by ambient light or fluorescent flickering, and mechanical failures when the lid is obstructed by overfilled trash. Furthermore, many existing systems lack the intelligence to handle manual overrides gracefully, often requiring a full system reset if a user forces the lid closed or if the battery voltage fluctuates.

The underlying idea behind ’676 is a robust, multi-layered control system that synchronizes optical sensing with mechanical feedback to ensure consistent lid behavior. The invention moves beyond simple proximity detection by employing encrypted light pulses to eliminate interference and utilizing a physical flagging member to track the lid’s exact location. This allows the system to distinguish between a lid that is stuck and one that has been manually moved, enabling the motor to recover and return to a 'home' position without losing its place in the logic cycle.

The claims of ’676 focus on a lifting mechanism that integrates a drive motor with a plurality of position detectors and a flagging member to monitor the lid's state. Specifically, the independent claims describe a system where an upper and lower position detector work in tandem with the flagging member to identify when the lid is fully closed, fully open, or in an intermediate state. This hardware configuration is designed to permit the lid to return to a home position regardless of whether it was moved by the motor or by manual force, ensuring the controller does not require a reset after human intervention.

In practice, the invention utilizes a specialized clutch within the drive mechanism that is tuned to slip more easily when the lid is pushed downward than when it is forced upward. This mechanical asymmetry protects the gears from damage during manual closing while maintaining enough resistance to lift the lid effectively. The controller further enhances this by monitoring the time elapsed during a movement cycle; if the flagging member does not reach the expected sensor within a set window, the system identifies a fault and halts the motor to prevent burnout.

To differentiate from prior art, the system employs a removable housing that contains the power supply, motor assembly, and controller as a single modular unit. This modularity, combined with the use of at least three-bit encryption for the optical sensors and an oblong viewing window, significantly reduces the maintenance burden and the frequency of accidental openings. By combining precise mechanical tracking via the flagging member with sophisticated signal filtering, the invention provides a seamless transition between automated operation and manual use.