US Patent 11297994 Unattended spot cleaning with surface sanitization

An unattended extraction cleaning machine includes a housing with a bottom portion that is adapted to rest on a surface to be cleaned, a fluid delivery system including a fluid distributor, a fluid extraction system including a suction nozzle, at least one carriage assembly mounting the suction nozzle to the housing for movement with respect thereto and with respect to the surface to be cleaned, and an ultraviolet light mounted on at least one of the housing and the carriage assembly to emit ultraviolet light onto the surface to be cleaned.