US Patent 10145055 Apparatus and methods for ultraviolet light treatment of laundry

An apparatus for exposing laundry to ultraviolet (UV) light comprises a mobile unit having a housing and at least one UV light carried by the housing and directed exteriorly therefrom. An activation module is located in the housing and configured to supply electrical power to the at least one UV light only when at least one activation criterion is satisfied. A battery power unit located in the housing supplies the electrical power to the at least one UV light via the activation module. The mobile unit can be connected to a base unit located on an interior surface of a laundry machine door. A UV light-sensitive laundry sheet can be used to gage UV light exposure to the laundry.