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2. Elastomeric respirator - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_respirator

   mouth-bit respirators, which fit in the mouth with the nose pinched shut (escape only) quarter-mask or orinasal mask, covering the mouth and nose only; half-mask, from below the eyes to below the chin; fullface mask, from above the eyes to below the chin; Some elastomeric masks include one-way valves to let exhaled air out unfiltered.

3. Powered air-purifying respirator - Wikipedia

   en.wikipedia.org/wiki/Powered_air-purifying...

   some kind of headgear (mask or hood), a powered (motor-driven) fan which forces incoming air into the device, a filter (or multiple filters) for delivery to the user for breathing, and; a battery or other power source. The mask may be hard and tight-fitting, or flexible and loose-fitting.

4. Escape breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Escape_breathing_apparatus

   EN 402:2003 — Respiratory protective devices - Lung governed demand Self-contained open-circuit compressed air breathing apparatus with full face mask or mouthpiece assembly for escape. [10] ISO 23269-1:2008 — Ships and marine technology — Breathing apparatus for ships — Part 1: Emergency escape breathing devices (EEBD) for shipboard use.

5. Orinasal mask - Wikipedia

   en.wikipedia.org/wiki/Orinasal_mask

   An orinasal mask, oro-nasal mask or oral-nasal mask [1] is a breathing mask that covers the mouth and the nose only. It may be a complete independent item, as an oxygen mask , or on some anaesthetic apparatuses, or it may be fitted as a component inside a fullface mask on underwater breathing apparatus , a gas mask or an industrial respirator ...

6. Breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Breathing_apparatus

   The half-mask extends below the chin, and the full-face mask covers the eyes as well as the nose and mouth, and can have a dead space so large that an inner orinasal mask is provided to reduce the dead space. A diving half-mask used in scuba and freediving covers the eyes and nose, and is not breathing apparatus.

7. Consumers who bought phony N95 masks getting more than ... - AOL

   www.aol.com/consumers-bought-phony-n95-masks...

   The Federal Trade Commission is sending a total of more than $1 million to fully refund people who bought deceptively marketed face masks during the COVID-19 pandemic, the agency announced on Monday.