US Patent 9856116 Device for cleaning a moving handrail belt

A self-driven device for cleaning moving handrail belts often found in electric escalators and walkways consists of a roller, fluid container, and fluid transfer apparatus. The roller rotates by being in contact with the moving belt and applies cleaning fluid to the belt to kill germs. The rotary motion of the roller is used to power the fluid transfer apparatus through a motion transfer mechanism. The fluid transfer apparatus transfers the fluid from a container, also provided within the device, to the roller. The present design acts in a way that does not require external power or complex control.