Wearable Chemical Dispenser with Useful Life Indicator

摘要

Wearable devices for dispensing insect repellents, fragrances, and/or other chemicals along the outside of the clothing of a human are disclosed. The devices are of the type that are clipped onto a belt or the like, and use a powered fan to dispense active. Air flow is directed through a substrate and adjacent to a useful life indicator to improve reliability of the useful life indicator.