PROTECTIVE MASK
A protective mask includes a transparent impermeable membrane; a frame that substantially surrounds and is coupled to a perimeter of the impermeable membrane and is configured to be positioned about a face of a user; a seal operatively coupled to the frame that seals against a face of the user and e...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | A protective mask includes a transparent impermeable membrane; a frame that substantially surrounds and is coupled to a perimeter of the impermeable membrane and is configured to be positioned about a face of a user; a seal operatively coupled to the frame that seals against a face of the user and extends around a perimeter of the frame, wherein the frame and the seal are substantially impermeable to the passage of air therethrough; an air passageway formed in the frame; and a filter element disposed to filter air passing through the air passageway. The air passageway and the filter element are disposed on a bottom portion of the frame. |
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