公开(公告)号：US20210393997A1

公开(公告)日：2021-12-23

申请号：US17347625

申请日：2021-06-15

申请人： MSA Technology, LLC

发明人： Aaron Tyler Jewitt ,  Kayleigh Nichelle Westbrook ,  Adam Bilger

IPC分类号： A62B23/02 ,  A62B18/08 ,  A62B18/02

摘要： A respirator mask includes a face piece configured for contacting at least a portion of a face of a user, a head harness for attaching the respirator mask to a head of the user, at least one opening on the face piece, and at least one filter associated with the opening on the face piece. The at least one filter is configured to facilitate a passage of ambient air to an interior of the face piece in a first direction. The at least one filter is further configured to facilitate a passage of air exhaled by the user wearing the respirator mask in a second direction opposite the first direction from the interior of the face piece to the ambient air and reduce a passage of aerosolized particulate matter exhaled by the user in the second direction.