Title:
NOVEL MASK
Document Type and Number:
WIPO Patent Application WO/2021/208907
Kind Code:
A1
Abstract:
A moisture-proof mask having an improved filtering effect, comprising a mask body, a filter element (2), and mask straps (11). The filter element (2) is a bag-shaped filter element; three filter bags for "exhalation", "inhalation", and "exhalation", respectively, are provided in the mask body from left to right; the mask body is provided with inhalation tubes (7), exhalation tubes (8), and a nose cover (5); each inhalation tube (7) has one end connected to the inner side of the nose cover (5) and the other end connected to the filter element (2); each exhalation tube (8) has one end connected to the inner side of the nose cover (5) and the other end connected to the filter element (2); the side part of the nose cover (5) is exposed out of an inner layer (3) of the mask body; and both the inhalation tubes (7) and the exhalation tubes (8) are provided with one-way valves. When inhaling, the outside air enters the human body after passing through an outer layer (1), the filter element (2), the inhalation tubes (7), and the nose cover (5); and when exhaling, the air is discharged through the nose cover (5), the exhalation tubes (8), and the outer layer (1), such that on the one hand, the air entering from the positions where a skin-friendly layer is attached to the face can be reduced, thus improving the filtering effect, and on the other hand, the moisture and pollution caused by the exhaled water vapor to the filter element (2) are reduced.
Inventors:
HU BO (CN)
Application Number:
PCT/CN2021/086909
Publication Date:
October 21, 2021
Filing Date:
April 13, 2021
Export Citation:
Assignee:
HU BO (CN)
International Classes:
A41D13/11; A41D31/02; B01D46/02
Foreign References:
| CN107048537A | 2017-08-18 | |||
| CN1981894A | 2007-06-20 | |||
| CN212139465U | 2020-12-15 | |||
| CN204522057U | 2015-08-05 | |||
| CN109906097A | 2019-06-18 | |||
| CN104127966A | 2014-11-05 | |||
| CN103393238A | 2013-11-20 | |||
| US20160309702A1 | 2016-10-27 | |||
| US20190374797A1 | 2019-12-12 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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