This invention describes a dispenser for rolled paper products, like paper towels, that automatically switches from a nearly empty 'stub roll' to a fresh main roll. When a sensor detects the stub roll is depleted, an electric motor moves a bar to guide the new roll's end into a set of rollers, ready for dispensing. The claims specifically detail the use of an electromechanical actuator, a transfer bar, and a controller for this process.
Why it matters: The cost and availability of compact sensors, microcontrollers, and electromechanical actuators have significantly improved since 2009. This makes the electronic control and mechanical automation described much more economical and easier to implement today.
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