Patent ID: 8402966

Claim:
A filter mask comprising: an oronasal cup configured to enclose a nose and mouth of a user and to fluidly couple with a filter that filters air passing through the filter along a center axis of the filter; an inhalation directional cover configured to be joined to the filter, the inhalation directional cover comprising an elongated wing portion oriented in an inhalation direction that is angled with respect to the center axis of the filter, wherein the inhalation directional cover is rotatably coupled to the filter, the inhalation directional cover rotatable about the center axis of the filter to vary orientation of the inhalation direction; and an exhalation diverter body fluidly coupled with the oronasal cup, the exhalation diverter body defining an exhalation duct that directs exhaled air out of the oronasal cup along an exhalation direction, wherein the inhalation direction and the exhalation direction are oriented away from a plane of interaction between the user and another person.