CN110973736A - Waterproof protective mask - Google Patents

Waterproof protective mask Download PDF

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Publication number
CN110973736A
CN110973736A CN201911200377.0A CN201911200377A CN110973736A CN 110973736 A CN110973736 A CN 110973736A CN 201911200377 A CN201911200377 A CN 201911200377A CN 110973736 A CN110973736 A CN 110973736A
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CN
China
Prior art keywords
cavity
filter
waterproof
buckle
waterproof protective
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911200377.0A
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Chinese (zh)
Inventor
朱其厚
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN201911200377.0A priority Critical patent/CN110973736A/en
Publication of CN110973736A publication Critical patent/CN110973736A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/113Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a vertical fold or weld
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00Details of garments or of their making
    • A41D27/28Means for ventilation
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00Materials specially adapted for outerwear
    • A41D31/04Materials specially adapted for outerwear characterised by special function or use
    • A41D31/12Hygroscopic; Water retaining

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The invention relates to a waterproof protective mask, which comprises a mask body, wherein the front side of the mask body is provided with an open filter cavity, the rear side of the mask body is provided with a nasal cavity, and a detachable filter module is arranged in the opening of the filter cavity, wherein: the outer side surface of the filtering module is provided with a waterproof baffle. The invention aims to solve the technical problem of providing a waterproof protective mask which is waterproof, moistureproof, convenient for replacing a filter module, convenient for cleaning, dismounting and convenient for manufacturing by an integrated structure.

Description

Waterproof protective mask
Technical Field
The invention relates to a mask, in particular to a waterproof protective mask.
Background
Traditional masks are made of an integral filter material, such as cotton or nonwoven, which is relatively thick. The inner face of the mask is tightly attached to the face, which causes discomfort to the skin of the face, unsanitary use and poor filtering effect. The mask is discarded after being used once, which causes waste and high use cost. In addition, the electronic air supply mask has a complex structure and higher manufacturing cost. The utility model provides a designer improves and has applied for a protective facial mask of ZL2018210981337, has solved the technical problem such as can replace the filter material, conveniently wash and dismouting, the convenient manufacturing of integrated into one piece structure. However, the technical scheme cannot be applied to extreme humid working environments such as mining and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a waterproof protective mask which is waterproof, moistureproof, convenient for replacing a filter module, convenient for cleaning, dismounting and convenient for manufacturing by an integrated structure.
In order to solve the technical problem, the invention provides a waterproof protective mask, which comprises a mask body, wherein the front side of the mask body is provided with an open filter cavity, the rear side of the mask body is provided with a nasal cavity, and a detachable filter module is arranged in the opening of the filter cavity, wherein: the outer side surface of the filtering module is provided with a waterproof baffle.
By adopting the technical scheme, the waterproof baffle is arranged on the outer side surface of the filtering module, so that water on the outer surface is blocked by the waterproof baffle, and the filtering and ventilating effects are prevented from being influenced by the water bouncing into or entering the filtering module. After the mask body is worn, the mouth and the nose breathe in the mouth and the nose cavities. The detachable filter module is arranged at an opening on the outer side of the filter cavity, an inner cavity communicated with the oral cavity and the nasal cavity is formed on the inner side of the detachable filter module, and filtered air is buffered and contained in the inner cavity and enters the oral cavity and the nasal cavity. The technical scheme of the invention is particularly suitable for extreme water-gas and humid working environments such as mining and the like.
The waterproof protective mask is characterized in that a ventilation gap layer is formed between the outer side face of the filtering module and the waterproof baffle, and an air inlet channel is formed at the side part of the ventilation gap layer. Through setting up the clearance layer of ventilating between waterproof baffle and the filtration module lateral surface to set up ascending intake duct at the lateral part of the clearance layer of ventilating, when blocking apparent water liquid, pure air goes out the unobstructed entering of intake duct, filters in the filtration module.
The waterproof protective mask is characterized in that the rear side of the mask body is provided with a sleeve type mask frame extending backwards, a nasal cavity is formed in the mask frame, a horn mouth is formed at the free end of the mask frame, and an outer diversion trench is formed between the rear side surface of the mask body and the horn mouth. The sleeve type cover frame extending backwards is arranged on the rear side of the cover body, an oral cavity and a nasal cavity sleeved with the mouth and the nose are formed in the sleeve type cover frame, the free outer end portion of the sleeve type cover frame is an opening, and the opening is expanded to be a horn mouth, so that the technical effect that the horn mouth can be freely adjusted to be matched with the attaching position when the horn mouth corresponds to the cheek of the oral cavity and the nasal cavity is achieved. The mask body is worn well and is only in small-area contact with the end face of the sleeve wall with the attaching edge of the cheek in the mouth, nose and mouth cavity, and the technical problem that the existing mask avoids the fact that the face skin is uncomfortable due to the fact that the attaching face is too large is solved. The face is separated from the front wall surface of the oral cavity and the nasal cavity by a certain interval, so that the face can not be tightly attached to the front wall surface of the oral cavity and the nasal cavity. Meanwhile, an outer diversion trench is formed between the slightly outwards turned bell mouth and the inner wall of the cover body, external water liquid flows through the outer diversion trench, and external and facial liquid is guided downwards through the outer diversion trench, so that the technical effect of cleaning cheeks outside the cover frame is guaranteed.
Foretell waterproof protective facial mask, the filter module includes a support seat, preceding buckle closure and filters the body, filters the body and detains through preceding buckle closure and establish in a support seat, forms the buckle annular between the outer loop limit of preceding buckle closure and support seat, is equipped with the air vent on the preceding buckle closure, and waterproof baffle sets up in the outside that the air vent is right. The filter module is arranged on the cover body through the bracket base, the rear bracket is arranged on the bracket base, and the bracket base of the detachable filter module can be detached from the filter cavity. However, when the filter body is replaced, the waterproof baffle and the rear support are only required to be opened from the support base, and the filter body is replaced, so that the purpose of replacing the filter body is achieved.
The waterproof protective mask is characterized in that an air inlet valve is arranged between the filter cavity and the oral cavity and the nasal cavity, the filter cavity is communicated with the oral cavity and the nasal cavity in a one-way mode through the air inlet valve, and the oral cavity and the nasal cavity are provided with an air outlet valve communicated with the oral cavity and the nasal cavity in a one-way mode. An air inlet is arranged between the filter cavity and the oral-nasal cavity, an air inlet valve is arranged at the air inlet, the filter cavity is communicated with the oral-nasal cavity in a single-way mode through the air inlet valve, air outside the mask body is sucked into the filter cavity through the air inlet valve when the nose inhales air, the air is filtered through a detachable filter module in the filter cavity, and the air is filtered and then enters the nasal cavity through the air inlet valve.
Above-mentioned waterproof protective facial mask, the lower side portion of the clearance layer of ventilating forms the intake duct. Set up the clearance layer of ventilating between waterproof baffle and the filtration module lateral surface to set up ascending intake duct in the lower side portion of the clearance layer of ventilating, when blocking apparent water liquid, pure air goes out the unobstructed entering of intake duct, filters in the filtration module.
The waterproof protective mask is characterized in that the surface of the waterproof baffle is in an outer arch shape and is provided with a buckle ring edge, and the buckle ring edge is buckled on the mask body or the filter module. A ventilation gap layer is arranged between the waterproof baffle plate with the plate surface in the shape of an outer arch and the outer side surface of the filtering module, and the waterproof baffle plate and the outer side surface of the filtering module are fixed on the cover body or the filtering module in a sealing mode through the buckle ring edge and the cover body or the filtering module buckle.
The waterproof protective mask is characterized in that the mouth and the nose cavities are internally provided with liquid containing tanks. The liquid containing tank is arranged in the oral cavity and the nasal cavity, so that water liquid and sweat generated by cold heat exchange in the oral cavity and the nasal cavity are collected to the liquid containing tank to realize drying and cleaning in the mask, and the liquid containing tank is preferably arranged at the lower part of the oral cavity and the nasal cavity.
The air vent is arranged on the upper half portion of the front buckle cover, the lower side edge of the waterproof baffle is lower than the air vent, and the air inlet channel communicated with the lower portion of the front buckle cover is formed between the lower side edge of the waterproof baffle and the lower half portion of the front buckle cover. And a vent hole is arranged on the upper half part of the front buckle cover under the condition of meeting the air input, and the lower half part of the front buckle cover is a sealing panel. The upper edge and the left and right edges of the waterproof baffle form a buckle ring edge and
foretell waterproof protective facial mask, the filter chamber is bilateral symmetry and sets up in the cover body front side. The middle part of the back side of the mask body forms an oral-nasal cavity, and the front sides of the mask body at the two sides of the oral-nasal cavity form filter cavities with symmetrical left and right openings forward. An air inlet is arranged between the filter cavity and the oral-nasal cavity, an air inlet valve is arranged at the air inlet, the filter cavity is communicated with the oral-nasal cavity in a single-way mode through the air inlet valve, air outside the mask body is sucked into the filter cavity through the air inlet valve when the nose inhales air, the air is filtered through a detachable filter module in the filter cavity, and the air is filtered and then enters the nasal cavity through the air inlet valve.
The opening of the annular filter cavity is provided with a groove, the support base is provided with a buckle annular edge, the buckle annular edge is buckled in the groove, and the buckle annular groove clamps the outer wall of the groove. The bracket base is provided with the buckle ring edge which is buckled in the groove of the opening of the filter cavity, so that the bracket base and the whole filter module can be detached from the cover body for cleaning, and the oral cavity and the filter cavity can also be cleaned. The outer wall of the clamping groove of the buckle ring groove formed between the front buckle cover and the outer ring edge of the bracket base realizes the sealing connection effect of further compressing and sealing the filtering module and the cover body.
The waterproof protective mask is characterized in that the mask body is a soft rubber cover. Because the cover body is the flexible glue cover, realize being equipped with buckle ring limit through the support seat and detaining and establish and realize that support seat and filter module are whole can follow the washing of pulling down from the cover body in filter chamber open-ended recess, and oral cavity, filter chamber also can wash. The outer wall of the clamping groove of the buckle ring groove formed between the front buckle cover and the outer ring edge of the bracket base realizes the sealing connection effect of further compressing and sealing the filtering module and the cover body. Meanwhile, the sealing connection effect of the cover body with the air inlet valve and the air outlet valve is not influenced. The air inlet valve, the air outlet valve and the detachable filtering module are arranged on the cover body, and can be detached from the cover body for cleaning, and the oral cavity and the filtering cavity can also be cleaned.
In the waterproof protective mask, the waterproof baffle is a transparent body. The waterproof baffle is arranged to be a transparent body to form the external observation window of the filter body, so that the use condition of the filter body arranged in the waterproof baffle can be conveniently observed and blocked, and the state of replacement can be definitely determined, so that the purpose of ensuring the filtering effect by replacing the filter body is achieved.
The storage groove is internally provided with the adsorption cotton. The cotton setting of moisturizing is in the storage tank, and the storage tank adsorbs in the liquid in the water smoke and the moisture and the storage tank to cold and heat exchange in oronasal cavity lower part, realizes the cover interior dry clean. The wall surface of the containing groove can be provided with a convex button, and the adsorption cotton can be buckled in the convex button.
Drawings
The invention will be further described in detail with reference to examples of embodiments in the drawings to which, however, the invention is not restricted.
FIG. 1 is a schematic view of the vertical cross-section of the present invention;
FIG. 2 is a schematic view of the horizontal cross-sectional structure of the present invention;
FIG. 3 is a schematic view of the disassembled structure of the present invention;
FIG. 4 is a schematic front view of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a rear view of FIG. 4;
FIG. 7 is a bottom view of FIG. 4;
FIG. 8 is a right side view of FIG. 4;
FIG. 9 is a schematic view of the filter module of the present invention in an assembled and disassembled configuration;
FIG. 10 is a schematic front view of a filtration module of the present invention;
FIG. 11 is a right side view of FIG. 10;
FIG. 12 is a left side view of FIG. 10;
FIG. 13 is a bottom view of FIG. 10;
fig. 14 is a rear view of fig. 10.
Detailed Description
As shown in fig. 1 to 14, the waterproof protective mask of the present invention comprises a mask body 1, wherein the mask body 1 is provided with a filter cavity 12 with an opening on the front side, a nasal cavity 11 on the rear side, a detachable filter module 2 is provided in the opening of the filter cavity 12, and a waterproof baffle 13 is provided on the outer side of the filter module 2.
An air-ventilation gap layer 3 is formed between the outer side face of the filter module 2 and the waterproof baffle 13, and an air inlet channel 31 is formed at the side part of the air-ventilation gap layer 3.
The rear side of the mask body 1 is provided with a sleeve type mask frame 14 extending backwards, the mask frame 14 is provided with a nasal cavity 11, a free end forms a bell mouth 141, and an outer diversion trench 142 is formed between the rear side surface of the mask body 1 and the bell mouth 141.
The filtering module 2 comprises a support base 21, a front buckle cover 22 and a filtering body 43, the filtering body 43 is buckled in the support base 21 through the front buckle cover 22, a buckle ring groove 24 is formed between the front buckle cover 22 and the outer ring edge of the support base 21, the front buckle cover (22) is provided with a vent hole 221, and a waterproof baffle (13) is arranged on the outer side opposite to the vent hole (221).
An air inlet valve 4 is arranged between the filter cavity 12 and the oral and nasal cavities 11, the filter cavity 12 is communicated with the oral and nasal cavities 11 in a one-way mode through the air inlet valve 4, and the oral and nasal cavities 11 are provided with air outlet valves 5 communicated with the oral and nasal cavities 11 in a one-way mode.
The lower side of the vent gap layer 3 forms an air intake channel 31.
The board of the waterproof baffle 13 is arched and has a buckle edge, and the buckle edge is buckled on the cover body 1 or the filter module 2 through a buckle ring edge.
The oral cavity 11 is provided with a liquid containing groove 6.
The upper half part of the front buckle cover 22 is provided with a vent hole 221, the lower side edge of the waterproof baffle 13 is lower than the vent hole 221, and a downward air inlet channel 31 is formed between the lower side edge of the waterproof baffle 13 and the lower half part of the front buckle cover 22.
The filter cavity 12 is arranged at the front side of the cover body 1 in a bilateral symmetry manner.
The opening of the annular filter cavity 12 is provided with a groove 121, the bracket base 21 is provided with a snap ring edge 211, the snap ring edge 211 is buckled in the groove 121, and the snap ring groove 24 clamps the outer wall of the groove 121.
The cover body 1 is a soft rubber cover.
The waterproof baffle 13 is a transparent body.
The accommodating groove 6 is provided with adsorption cotton.
When the filter module is used specifically, the waterproof baffle 13 is arranged on the outer side surface of the filter module 2 to block water on the outer surface, so that the water is prevented from bouncing into or entering the filter module 2 to influence the filtering and ventilating effects. The free outer end part of the sleeve type cover frame 14 at the rear side of the cover body 1 is an opening, and the diameter of the opening is expanded to form a technical effect that the bell mouth 141 can be freely adjusted to a matched joint position when corresponding to the mouth, the nose and the cheek. The mask body 1 is worn well and is only in small-area contact with the end face of the sleeve wall with the joint edge of the mouth, the nose and the cheek, and the technical problem that the existing mask avoids the uncomfortableness of the skin of the face due to the overlarge joint face is solved. The face is separated from the front wall surface of the oral cavity and the nasal cavity 11 by a certain distance through the joint edge, so that the face can not be tightly attached to the front wall surface of the oral cavity and the nasal cavity 11. Meanwhile, an outer diversion trench 142 is formed between the slightly outwards turned bell mouth and the inner wall of the mask body, external water liquid flows through the outer diversion trench, and the external liquid and the facial liquid are guided downwards through the outer diversion trench, so that the technical effect of cleaning cheeks outside the mask frame is ensured.
After the mask body is worn, the mouth and the nose breathe in the mouth and nose cavity 11. The detachable filter module 2 is arranged at an opening at the outer side of the filter cavity 12, an inner cavity communicated with the oral cavity and the nasal cavity is formed at the inner side of the filter module, and filtered air is buffered and contained in the inner cavity and enters the oral cavity and the nasal cavity. The oral and nasal cavities 11 are opposite to the oral and nasal cavities, when the nose inhales air, the air inlet valve 4 is opened, the air outlet valve 5 is closed, the air outside the mask body 1 is inhaled into the filter cavity 12 through the air inlet valve 4, and the air is filtered by the filter body in the filter cavity 12 and then enters the oral and nasal cavities 11 through the air inlet valve 4 for the oral and nasal cavities to inhale air; when the mouth nose exhales, admission valve 4 closes, air outlet valve 5 opens, and the gas of mouth nose exhalation passes through air guiding gutter 13 water conservancy diversion to the air outlet valve 5 of 11 below in the mouth nose chamber, and it is external through air outlet valve 5 discharge cover 1, adsorbs the cotton and places in standing groove 4, adsorbs the cotton and pastes tight face, realizes the purpose of oil absorption, sweat-absorbing.
In summary, the actual samples of the present invention are prepared according to the description and the drawings, and after a plurality of usage tests, the effect of the usage tests proves that the present invention can achieve the expected purpose, and the practical value is undoubted. The above examples are given for the convenience of illustration of the invention. The present invention is not intended to be limited to the above embodiments, and those skilled in the art can easily understand that the technical features of the present invention can be modified and changed without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a waterproof protective facial mask, includes the cover body (1), cover body (1) front side is equipped with open-ended filter chamber (12), the rear side is equipped with oral cavity (11), is equipped with dismantled and assembled filter module (2), its characterized in that in filter chamber (12) opening: the outer side surface of the filtering module (2) is provided with a waterproof baffle (13).
2. The waterproof protective mask according to claim 1, characterized in that: a ventilation gap layer (3) is formed between the outer side surface of the filtering module (2) and the waterproof baffle (13), and an air inlet channel (31) is formed at the side part of the ventilation gap layer (3).
3. The waterproof protective mask according to claim 1, characterized in that: the rear side of the mask body (1) is provided with a sleeve type mask frame (14) extending backwards, a nasal cavity (11) is formed in the mask frame (14), a horn mouth (141) is formed at the free end, and an outer diversion trench (142) is formed between the rear side surface of the mask body (1) and the horn mouth (141).
4. The waterproof protective mask according to claim 1, characterized in that: the filter module (2) comprises a support base (21), a front buckle cover (22) and a filter body (23), the filter body (23) is buckled in the support base (21) through the front buckle cover (22), a buckle ring groove (24) is formed between the outer ring edges of the front buckle cover (22) and the support base (21), a vent hole (221) is formed in the front buckle cover (22), and a waterproof baffle (13) is arranged on the outer side opposite to the vent hole (221).
5. The waterproof protective mask according to claim 1, characterized in that: an air inlet valve (4) is arranged between the filter cavity (12) and the oral and nasal cavities (11), the filter cavity (12) is communicated with the oral and nasal cavities (11) in a one-way mode through the air inlet valve (4), and the oral and nasal cavities (11) are provided with air outlet valves (5) communicated in a one-way mode.
6. The waterproof protective mask according to claim 2, characterized in that: an air inlet channel (31) is formed at the lower side part of the ventilation gap layer (3).
7. The waterproof protective mask according to claim 1, 2 or 4, characterized in that: the surface of the waterproof baffle (13) is in an outer arch shape and is provided with a buckle edge, and the buckle edge is buckled on the cover body (1) or the filtering module (2) through a buckle ring edge.
8. The waterproof protective mask according to claim 1, characterized in that: the oral cavity and the nasal cavity (11) are provided with a liquid containing groove (6).
9. The waterproof protective mask according to claim 4, characterized in that: air vent (221) are established to preceding buckle closure (22) upper half, and waterproof baffle (13) downside is less than air vent (221), forms air inlet (31) of expert down between waterproof baffle (13) downside and preceding buckle closure (22) the latter half.
10. The waterproof protective mask according to claim 4, characterized in that: the opening of the annular filter cavity (12) is provided with a groove (121), the bracket base (21) is provided with a snap ring edge (211), the snap ring edge (211) is buckled in the groove (121), and the snap ring groove (24) clamps the outer wall of the groove (121).
CN201911200377.0A 2019-11-29 2019-11-29 Waterproof protective mask Pending CN110973736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911200377.0A CN110973736A (en) 2019-11-29 2019-11-29 Waterproof protective mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911200377.0A CN110973736A (en) 2019-11-29 2019-11-29 Waterproof protective mask

Publications (1)

Publication Number Publication Date
CN110973736A true CN110973736A (en) 2020-04-10

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ID=70088396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911200377.0A Pending CN110973736A (en) 2019-11-29 2019-11-29 Waterproof protective mask

Country Status (1)

Country Link
CN (1) CN110973736A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856508A (en) * 1987-04-13 1989-08-15 New England Thermoplastics, Inc. Face mask
JPH1199215A (en) * 1997-07-29 1999-04-13 Chino Mitsumasa Dustproof mask
WO2010064862A2 (en) * 2008-12-05 2010-06-10 Park Ki Su Mask
CN203748712U (en) * 2013-12-31 2014-08-06 西安理工大学 Active-air-supplying type haze protective cover
CN204091061U (en) * 2014-07-03 2015-01-14 四川创越炭材料有限公司 A kind of composite active carbon fibre elastomer mouth mask
CN204409657U (en) * 2015-02-06 2015-06-24 程德 Sports mask
EP2913084A1 (en) * 2014-02-06 2015-09-02 Moldex-Metric AG & Co. KG Breathing mask with bayonet-type connection for a filter module
CN205197079U (en) * 2015-12-01 2016-05-04 安徽创荣服装辅料有限公司 Mask
CN206260895U (en) * 2016-11-21 2017-06-20 内蒙古自治区人民医院 Lampblack-preventing face mask
CN108741302A (en) * 2018-07-11 2018-11-06 朱其厚 Protective mask
CN212382120U (en) * 2019-11-29 2021-01-22 朱鹏飞 Waterproof protective mask

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856508A (en) * 1987-04-13 1989-08-15 New England Thermoplastics, Inc. Face mask
JPH1199215A (en) * 1997-07-29 1999-04-13 Chino Mitsumasa Dustproof mask
WO2010064862A2 (en) * 2008-12-05 2010-06-10 Park Ki Su Mask
CN203748712U (en) * 2013-12-31 2014-08-06 西安理工大学 Active-air-supplying type haze protective cover
EP2913084A1 (en) * 2014-02-06 2015-09-02 Moldex-Metric AG & Co. KG Breathing mask with bayonet-type connection for a filter module
CN204091061U (en) * 2014-07-03 2015-01-14 四川创越炭材料有限公司 A kind of composite active carbon fibre elastomer mouth mask
CN204409657U (en) * 2015-02-06 2015-06-24 程德 Sports mask
CN205197079U (en) * 2015-12-01 2016-05-04 安徽创荣服装辅料有限公司 Mask
CN206260895U (en) * 2016-11-21 2017-06-20 内蒙古自治区人民医院 Lampblack-preventing face mask
CN108741302A (en) * 2018-07-11 2018-11-06 朱其厚 Protective mask
CN212382120U (en) * 2019-11-29 2021-01-22 朱鹏飞 Waterproof protective mask

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