Title:
PROTECTIVE MASK FOR EASILY VENTING EXHALED GAS
Document Type and Number:
WIPO Patent Application WO/2019/232914
Kind Code:
A1
Abstract:
A protective mask (1) that easily vents exhaled gas, comprising a mask body (11) and a nasal mask (12). An inner edge of the mask body (11) is provided with a first sealing ring (111); the nasal mask (12) has a ring-shaped structure, one end of which is in sealed connected with an inner side of the mask body (11), and the other end of which is provided with a second sealing ring (121); when the protective mask (1) is disposed on the face of a user by means of the first sealing ring (111) and the second sealing ring (121), a first chamber (101) covering the nose of the user is formed between the mask body (11) and an inner part of the nasal mask (12); a second chamber (102) covering the mouth of the user is formed between the mask body (11), an outer part of the nasal mask (12), and an inner part of the first sealing ring (111); the protective mask (1) further comprises a filter element (13), a first one-way valve (14) and a second one-way valve (15), and the filter element (13) is used to filter air flowing from an outer side of the mask body (11) into the inner side; the first one-way valve (14) is disposed on the mask body (11) located in the first chamber (101) to allow a gas to flow out from the first chamber (101) to an outer side of the protective mask (1); and the second one-way valve (15) is disposed on the ring-shaped structure of the nasal mask (12) to allow the gas to flow from the second chamber (102) into the first chamber (101).
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Inventors:
GUO SHUNPING (CN)
WANG HONGHAI (CN)
HE SHUGANG (CN)
WANG HONGHAI (CN)
HE SHUGANG (CN)
Application Number:
PCT/CN2018/099127
Publication Date:
December 12, 2019
Filing Date:
August 07, 2018
Export Citation:
Assignee:
SHENZHEN MEIHAO CHUANGYI MEDICAL TECH CO LTD (CN)
International Classes:
A41D13/11; A62B9/06; A62B23/06
Domestic Patent References:
| WO2015131262A1 | 2015-09-11 |
Foreign References:
| CN101554251A | 2009-10-14 | |||
| CN101554251A | 2009-10-14 | |||
| CN205730013U | 2016-11-30 | |||
| CN103611222A | 2014-03-05 | |||
| CN101874655A | 2010-11-03 | |||
| CN103736221A | 2014-04-23 | |||
| CN2482431Y | 2002-03-20 | |||
| KR101254248B1 | 2013-04-12 | |||
| CN206964903U | 2018-02-06 |
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