Nasal Mask
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United States of America Patent
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Issued Date -
Aug 27, 2015
app pub date -
Jan 8, 2015
filing date -
Jan 10, 2014
priority date (Note) -
Published
status (Latency Note)
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Abstract
A nasal mask contains: a body including a flexible supporting portion, a holding portion, and an filter accommodating hole. The filter accommodating hole communicates with the body, the flexible supporting portion has a rear segment for abutting against an inner side of the user's nostril, and the holding portion is biased against an outer side of the user's nostril. A fastening cover rotatably is connected with the holding portion and includes a plurality of air orifices communicating with the filter accommodating hole. A three-dimensional filter is fixed in and is removed from the body, the three-dimensional filter includes a twisted filtration fence and an extending flange, and the twisted filtration fence has plural curved sections for filtering air in the three-dimensional filter, the extending flange extends outwardly from a bottom end of the three-dimensional filter and is retained between the holding portion and the fastening cover.
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