US Patent 10537754 Personal air purification device and related methods

A personal air purification device includes at least one conduit assembly connected to a mounting assembly and a power supply arrangement. The at least one conduit assembly includes a conduit extending between an air inlet end and air outlet end, a filter and a fan. The filter is connected to the conduit and configured to remove contaminants from the air passing the through the conduit. The fan is connected to the conduit and configured to drive air flow through the filter and the conduit. The mounting assembly is configured to hold the conduit about the head of a wearer with the air inlet end positioned to generate a high pressure area proximate to a nose and mouth thereof. The power supply arrangement is configured to supply electrical power to the fan.