CN203763695U - Gill breathing type respirator - Google Patents
Gill breathing type respirator Download PDFInfo
- Publication number
- CN203763695U CN203763695U CN201420068055.1U CN201420068055U CN203763695U CN 203763695 U CN203763695 U CN 203763695U CN 201420068055 U CN201420068055 U CN 201420068055U CN 203763695 U CN203763695 U CN 203763695U
- Authority
- CN
- China
- Prior art keywords
- breather valve
- upper cover
- mouth mask
- tether
- respirator
- Prior art date
- 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.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
Abstract
The utility model relates to a gill breathing type respirator which comprises a respirator surface, a breathing valve, two elastic tying ropes and an anti-hurt stopper, wherein a breathing valve reserved hole is formed in the middle of one side of the respirator surface, the breathing valve is fixed in the breathing valve reserved hole, the two lateral edges of the respirator surface are respectively provided with a pair of lateral wings, each pair of lateral wings is used for fixing a corresponding elastic tying rope, and the two elastic tying ropes are arranged on the anti-hurt stopper in a sleeved mode. When the gill breathing type respirator is worn, the anti-hurt stopper is placed behind the head. During expiration, the breathing valve is opened by means of expired gas. During inspiration, the breathing valve is closed by means of outside gas. According to the gill breathing type respirator, expired waste gas discharging efficiency is effectively improved for the space inside the respirator, accumulation of carbon dioxide and nitrogen is reduced, and the service life of the respirator is prolonged; meanwhile, the respirator wearing method is designed to enable the adhesive force of the respirator on the face to be improved, and due to the fact that force is exerted all over the head, the wearing comfort level is increased.
Description
Technical field
The utility model relates to mouth mask, relates in particular to a kind of cheek formula spray mask.
Background technology
In daily life, people completely cut off dust, the air pollutants such as the spittle by wearing mouth mask.The Basic Design mode of mouth mask is outside mouth and nose, to form a confined space, when air amount, by the filter cloth in face shield, filters outside deleterious particle, and this face shield hangs over ear by elastic frenulum and fixes.
As existing 3M9001A mouth mask, the facial shade that adopts folding nonwoven to make carrys out the deleterious particle in filtered air, and fixes by the frenulum of ear.
But, 2 problems that existing folding mouth mask design exists:
1) when exhaling, the waste gas of characteristics of contaminated respiratory droplets cannot fully be discharged space in mouth mask.Continuing to wear after a period of time, in mouth mask, can assemble great amount of carbon dioxide and breathe waste gas, causing breathing to have some setbacks, anoxic, and carbon dioxide poisoning.
2) existing folding mouth mask adopts ear suspension type design, fixing after ear by lanyard.But ear root is tenderer, in basal part of the ear portion, assemble a large amount of vagus nerves.Tradition mouth mask, for a long time with the lanyard basal part of the ear that fastens, can cause ear and blood supply insufficiency of brain.
Utility model content
Technical problem to be solved in the utility model is for the deficiencies in the prior art, and a kind of cheek formula spray mask is provided.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of cheek formula spray mask, comprise that mouth mask cover, breather valve, two elastic tether and anti-rope buckle, described mouth mask cover cover one middle side part is provided with a breather valve and boxes out, described breather valve is fixed on during described breather valve boxes out, during expiration, described breather valve is opened by the gas of breathing out, and when air-breathing, described breather valve cuts out by extraneous gas; Described mouth mask cover both sides of the edge are respectively provided with a pair of flank, and every pair of flank is used for fixing an elastic tether; Described two elastic tether are enclosed within anti-rope and buckle, and while wearing, described anti-rope is buckled on after brain.
The beneficial effects of the utility model are: the utility model can effectively promote the expulsion efficiency of space to exhalation waste gas in mouth mask, reduces carbon dioxide, and the accumulation in cover such as nitrogen, extends the time that mouth mask is worn; Meanwhile, the design that mouth mask tether and anti-rope are buckled can promote cover body at facial adhesive force, due to stressed, covers whole head, so also promoted the comfort level of wearing.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described breather valve is sector structure, comprises breather valve base, silica gel valve block and breather valve upper cover;
Described breather valve base comprises the fan-shaped framework that breather valve shirt rim forms, a fan-shaped platform of fan-shaped frame roof inner side socket, at fan-shaped frame mid portion symmetry axis, place is provided with a brace summer, described brace summer is fixed on fan-shaped platform near the one end at fan-shaped top, and this end of brace summer is provided with a fixed leg, the other end of brace summer is fixed on breather valve shirt rim; Between described brace summer and breather valve shirt rim, form two base spiracles; In described breather valve shirt rim, profile place is provided with a corral hurdle, and described fence upper end inward flange is provided with a circle holddown groove, and described holddown groove height equates with brace summer height, and described fence outside is provided with several horizontally disposed fixing strips;
Described silica gel valve block is sector structure, and sector structure top is provided with a fixing hole, the fixing hole of described silica gel valve block through breather valve base fixed leg, silica gel valve block is installed in the holddown groove of breather valve base;
Described breather valve upper cover is bike saddle shape structure, comprise upper cover body, described upper cover body bottom margin is upper cover shirt rim, described upper cover body face is provided with several upper cover spiracles, that described upper cover body inner side is provided with is corresponding with fixing strip position on breather valve valve base, identical several the fixed card slot of number, the hollow fixed leg in described upper cover bodies top inner side; Described breather valve upper cover covers on breather valve base, and the fixed leg of described breather valve base inserts in the hollow fixed leg of breather valve upper cover, and the fixing strip of described breather valve base is stuck in the fixed card slot of breather valve upper cover inner side.
Adopt the beneficial effect of above-mentioned further scheme: the special design structure of breather valve, while effectively having realized expiration, breather valve is opened, discharge rapidly the gas in mouth mask, and when air-breathing, breather valve cuts out, extraneous gas shelves are outside at breather valve, effectively prevent that extraneous gas from entering mouth mask inside from breather valve, extraneous air enters mouth mask inside by other positions of mouth mask cover, the air entering filters through mouth mask cover filter pulp layer, reaches good filter effect, plays the effect of isolation nuisance.
Further, described anti-rope button is glasses shape structure, and its middle part is tie-beam, and a side of tie-beam is tether holddown groove, and opposite side is tether clip; The semicircle cyclic structure that described tether holddown groove is connected by two bottoms forms, and two semicircle cyclic structure joints form two fore shafts, for the elastic tether of a side is packed in tether holddown groove; Described tether clip is connected and composed up and down by two disks that differ in size, and described two disk junctions form a circle groove, and the elastic tether of described opposite side is fixed on tether clip by being enclosed within described groove.
Adopt the beneficial effect of above-mentioned further scheme: changed tradition by mouth mask tether fixing mode after ear, but mouth mask tether is fixed on after brain, promoted user's comfortable wearing degree.
Further, described mouth mask cover comprises hydrophilic nonwoven fabrics layer, filter pulp layer and nonwoven layer from the inside to the outside, and upper and lower two ends, mouth mask cover middle part are respectively provided with a horizontal ultrasonic embossing, and hydrophilic nonwoven fabrics layer, filter pulp layer and nonwoven layer are welded as to integral body.
Further, described two elastic tether are connected on the flank of mouth mask cover both sides by supersonic welding.
Further, described anti-rope button adopts silica gel material.
Adopt the beneficial effect of above-mentioned further scheme: adopt the soft material of rubber-like, can produce deformation according to human body contour outline, the scope of application is extensive, comfortable wearing.
Further, described mouth mask cover shape adopts identical with 3M9001A series mouth mask shape.
Further, described mouth mask cover and described flank are integral type structure.
Accompanying drawing explanation
Fig. 1 is a kind of cheek formula spray mask structural representation described in the utility model;
Fig. 2 is that mouth mask face shield trilaminate material described in the utility model is blown figure;
Fig. 3 is mouth mask face shield perspective view described in the utility model;
Fig. 4 is that breather valve structure described in the utility model is blown figure;
Fig. 5 is breather valve understructure schematic diagram described in the utility model;
Fig. 6 is silica gel valve chip architecture schematic diagram described in the utility model;
Fig. 7,8,9 is breather valve superstructure schematic diagram described in the utility model;
Figure 10 is anti-rope buckle structure schematic diagram described in the utility model;
Figure 11 is the utility model wearing mode schematic diagram;
Figure 12 a-12b is breather valve course of work schematic diagram;
Figure 13 a-13d is for being arranged on breather valve in the installation steps schematic diagram of mouth mask cover.
In accompanying drawing, the list of parts of each label representative is as follows:
1, mouth mask cover, 2, breather valve, 3, elastic tether, 4, anti-rope button, 1-1, breather valve is boxed out, 1-2 flank, 1-3, hydrophilic nonwoven fabrics layer, 1-4, filter pulp layer, 1-, 5, nonwoven layer, 1-6 ultrasonic embossing, 2-1, breather valve base, 2-2, silica gel valve block, 2-3, breather valve upper cover, 2-1-1, breather valve shirt rim, 2-1-2, fan-shaped platform, 2-1-3, brace summer, 2-1-4, fixed leg, 2-1-5, base spiracle, 2-1-6, fence, 2-1-7, holddown groove, 2-1-8, fixing strip, 2-2-1, fixing hole, 2-3-1, upper cover body, 2-3-2, upper cover shirt rim, 2-3-3, upper cover spiracle, 2-3-4, fixed card slot, 2-3-5, hollow fixed leg, 4-1, tie-beam, 4-2, tether holddown groove, 4-3, tether clip, 4-2-1, the first snap close, 4-2-2, the second snap close.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1,2 and 3, a kind of cheek formula spray mask, comprise that mouth mask cover 1, breather valve 2, two elastic tether 3 and anti-rope buckle 4, described mouth mask cover cover 1 one middle side parts are provided with the breather valve 1-1 that boxes out, described breather valve 2 is fixed on described breather valve and boxes out in 1-1, and during expiration, described breather valve 2 is opened by the gas of breathing out, when air-breathing, described breather valve 2 cuts out by extraneous gas; Described mouth mask cover 1 both sides of the edge are respectively provided with a pair of flank 1-2, and every couple of flank 1-2 is used for fixing an elastic tether 3; Described two elastic tether 3 are enclosed within on anti-rope button 4, and while wearing, described anti-rope button 4 is placed in after brain.
Described mouth mask cover 1 comprises hydrophilic nonwoven fabrics layer 1-3, filter pulp layer 1-4 and nonwoven layer 1-5 from the inside to the outside, and hydrophilic nonwoven fabrics layer 1-3, filter pulp layer 1-4 and the nonwoven layer 1-5 of described mouth mask cover are welded as integral body by ultrasonic embossing 1-6; Wherein, described mouth mask cover 1 shape adopts identical with 3M9001A series mouth mask shape; Wherein, described mouth mask cover 1 is integral type structure with described flank 1-2.
As shown in Figure 4, described breather valve 2 is sector structure, comprises breather valve base 2-1, silica gel valve block 2-2 and breather valve upper cover 2-3.
As shown in Figure 5, described breather valve base 2-1 comprises the fan-shaped framework that breather valve shirt rim 2-1-1 forms, a fan-shaped platform 2-1-2 of fan-shaped frame roof inner side socket, at fan-shaped frame mid portion symmetry axis, place is provided with a brace summer 2-1-3, described brace summer 2-1-3 is fixed on fan-shaped platform 2-1-2 near the one end at fan-shaped top, and this end of brace summer is provided with a fixed leg 2-1-4, the other end of brace summer 2-1-3 is fixed on the 2-1-1 of breather valve shirt rim; Between described brace summer 2-1-3 and breather valve shirt rim 2-1-1, form two base spiracle 2-1-5; In described breather valve shirt rim 2-1-1, profile place is provided with a corral hurdle 2-1-6, described fence 2-1-6 upper end inward flange is provided with a circle holddown groove 2-1-7, described holddown groove 2-1-7 height highly equates with brace summer 2-1-3, and described fence 2-1-6 outside is provided with several horizontally disposed fixing strip 2-1-8.
As shown in Figure 6, described silica gel valve block 2-2 is sector structure, sector structure top is provided with a fixing hole 2-2-1, the fixing hole 2-2-1 of described silica gel valve block 2-2 through breather valve base 2-1 fixed leg 2-1-4, silica gel valve block 2-2 is installed in the holddown groove 2-1-7 of breather valve base 2-1.
As shown in Fig. 7,8 and 9, described breather valve upper cover 2-3 is bike saddle shape structure, comprise upper cover body 2-3-1, described upper cover body 2-3-1 bottom margin is upper cover shirt rim 2-3-2, described upper cover body 2-3-1 face is provided with several upper cover spiracles 2-3-3, described upper cover body 2-3-1 inner side is provided with corresponding place, the upper fixing strip 2-1-8 position of breather valve valve base 2-1 and is provided with identical several the fixed card slot 2-3-4 of number, hollow fixed leg 2-3-5 of described upper cover body 2-3-1 inside top; Described breather valve upper cover 2-3 covers on breather valve base 2-1, the fixed leg 2-1-4 of described breather valve base 2-1 inserts in the hollow fixed leg 2-3-5 of breather valve upper cover 2-3, and the fixing strip 2-1-8 of described breather valve base 2-1 is stuck in the fixed card slot 2-3-4 of breather valve upper cover 2-3 inner side.
As shown in figure 10, described anti-rope button 4 is glasses shape structure, and its middle part is tie-beam 4-1, and a side of tie-beam 4-1 is tether holddown groove 4-2, and opposite side is tether clip 4-3; The semicircle cyclic structure that described tether holddown groove 4-2 is connected by two bottoms forms, two semicircle cyclic structure joints form two fore shafts, be respectively the first snap close 4-2-1 and the second snap close 4-2-2, for the elastic tether of a side 3 being packed in tether holddown groove 4-2; Described tether clip 4-3 is connected and composed up and down by two disks that differ in size, and described two disk junctions form a circle groove, and the elastic tether 3 of described opposite side is fixed on tether clip 4-3 by being enclosed within described groove.Anti-rope button 3 adopts silica gel material, and material is soft, and can produce deformation according to human body contour outline.
As Figure 11, described two elastic tether 3 are connected on the flank 1-2 of mouth mask cover both sides by supersonic welding.It is different from general mouth mask tether and is fixed on ear, but coordinates anti-rope button 4 to fix at user's hindbrain, and then promotes user's comfortable wearing.
Briefly introduce cheek formula spray mask operation principle described in the utility model below.
As shown in Figure 12 a-12b, from breather valve 2, the Main Function of silica gel valve block 2-2 is wherein when exhaling, to allow the gas in mouth mask discharge fast, when air-breathing, seals up breather valve, prevent extraneous air pass through breather valve suck.Be specially, when exhaling, owing to breathing the top of valve block 2-2, by the fixed leg 2-1-4 of breather valve base 2-1, fixed, the gas that can be breathed out in bottom blows afloat, and then, the gas of mouth mask inside through base spiracle 2-1-5, breathe valve block 2-2 and upper cover spiracle 2-3-3 is discharged from, drained after, breathe valve block 2-2 and reset; When air-breathing, extraneous gas acts on to be breathed on valve block 2-2, breathe valve block 2-2 tightly docile and obedient on breather valve base 2-1, effectively prevent that extraneous gas from entering mouth mask inside from breather valve 2, extraneous air enters mouth mask inside by other positions of mouth mask cover 1, and the air entering filters through the filter pulp layer 1-4 of mouth mask cover 1, and then enters into mouth mask inside, reach good filter effect, play the effect of isolation nuisance.
Briefly introduce valve below and be installed to the step on mouth mask cover:
As Figure 13 a-13d, first, the breather valve of breather valve base 2-1 direction insertion from the inside to the outside mouth mask cover 1 is boxed out in 1-1, and go out to expose outside breather valve base 2-1 top;
Secondly, will breathe the fixed leg 2-1-4 of the fixing hole 2-2-1 of valve block 2-2 through breather valve base 2-1, by breathing valve block 2-2, be placed in the holddown groove 2-1-7 of breather valve base;
Again, the direction of breather valve upper cover 2-3 alignment breather valve base 2-1 is covered;
Finally, the fixed leg 2-1-4 of breather valve base 2-1 is inserted in the hollow fixed leg 2-3-5 of breather valve upper cover 2-3, the fixing strip 2-1-8 of breather valve base 2-1 is stuck in the fixed card slot 2-3-5 of breather valve upper cover 2-3 inner side, and upper cover shirt rim 2-3-2 coordinates base shirt rim 2-1-1 to fasten mouth mask cover 1, completes fixing.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a cheek formula spray mask, it is characterized in that, comprise that mouth mask cover, breather valve, two elastic tether and anti-rope buckle, described mouth mask cover cover one middle side part is provided with a breather valve and boxes out, described breather valve is fixed on during described breather valve boxes out, and during expiration, described breather valve is opened by the gas of breathing out, when air-breathing, described breather valve cuts out by extraneous gas; Described mouth mask cover both sides of the edge are respectively provided with a pair of flank, and every pair of flank is used for fixing an elastic tether; Described two elastic tether are enclosed within anti-rope and buckle, and while wearing, described anti-rope is buckled on after brain.
2. a kind of cheek formula spray mask according to claim 1, is characterized in that, described breather valve is sector structure, comprises breather valve base, silica gel valve block and breather valve upper cover;
Described breather valve base comprises the fan-shaped framework that breather valve shirt rim forms, a fan-shaped platform of fan-shaped frame roof inner side socket, at fan-shaped frame mid portion symmetry axis, place is provided with a brace summer, described brace summer is fixed on fan-shaped platform near the one end at fan-shaped top, and this end of brace summer is provided with a fixed leg, the other end of brace summer is fixed on breather valve shirt rim; Between described brace summer and breather valve shirt rim, form two base spiracles; In described breather valve shirt rim, profile place is provided with a corral hurdle, and described fence upper end inward flange is provided with a circle holddown groove, and described holddown groove height equates with brace summer height, and described fence outside is provided with several horizontally disposed fixing strips;
Described silica gel valve block is sector structure, and sector structure top is provided with a fixing hole, the fixing hole of described silica gel valve block through breather valve base fixed leg, silica gel valve block is installed in the holddown groove of breather valve base;
Described breather valve upper cover is bike saddle shape structure, comprise upper cover body, described upper cover body bottom margin is upper cover shirt rim, described upper cover body face is provided with several upper cover spiracles, that described upper cover body inner side is provided with is corresponding with fixing strip position on breather valve valve base, identical several the fixed card slot of number, the hollow fixed leg in described upper cover bodies top inner side; Described breather valve upper cover covers on breather valve base, and the fixed leg of described breather valve base inserts in the hollow fixed leg of breather valve upper cover, and the fixing strip of described breather valve base is stuck in the fixed card slot of breather valve upper cover inner side.
3. a kind of cheek formula spray mask according to claim 1, is characterized in that, described anti-rope button is glasses shape structure, and its middle part is tie-beam, and a side of tie-beam is tether holddown groove, and opposite side is tether clip; The semicircle cyclic structure that described tether holddown groove is connected by two bottoms forms, and two semicircle cyclic structure joints form two fore shafts, for the elastic tether of a side is packed in tether holddown groove; Described tether clip is connected and composed up and down by two disks that differ in size, and described two disk junctions form a circle groove, and the elastic tether of described opposite side is fixed on tether clip by being enclosed within described groove.
4. a kind of cheek formula spray mask according to claim 1, it is characterized in that, described mouth mask cover comprises hydrophilic nonwoven fabrics layer, filter pulp layer and nonwoven layer from the inside to the outside, upper and lower two ends, mouth mask cover middle part are respectively provided with a horizontal ultrasonic embossing, and hydrophilic nonwoven fabrics layer, filter pulp layer and nonwoven layer are welded as to integral body.
5. a kind of cheek formula spray mask according to claim 1, is characterized in that, described two elastic tether are connected on the flank of mouth mask cover both sides by supersonic welding.
6. according to a kind of cheek formula spray mask described in claim 1 or 3, it is characterized in that, described anti-rope button adopts silica gel material.
7. according to a kind of cheek formula spray mask described in claim 1 or 4, it is characterized in that, it is identical with 3M9001A series mouth mask shape that described mouth mask cover shape adopts.
8. according to a kind of cheek formula spray mask described in claim 1 or 4, it is characterized in that, described mouth mask cover and described flank are integral type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068055.1U CN203763695U (en) | 2014-02-17 | 2014-02-17 | Gill breathing type respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068055.1U CN203763695U (en) | 2014-02-17 | 2014-02-17 | Gill breathing type respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203763695U true CN203763695U (en) | 2014-08-13 |
Family
ID=51280949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068055.1U Expired - Fee Related CN203763695U (en) | 2014-02-17 | 2014-02-17 | Gill breathing type respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203763695U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104839910A (en) * | 2015-05-21 | 2015-08-19 | 马振原 | Single-point welding mask |
| CN106490721A (en) * | 2016-10-09 | 2017-03-15 | 北京小米移动软件有限公司 | A kind of mask |
| CN107549897A (en) * | 2017-09-08 | 2018-01-09 | 盐城方天无纺制品有限公司 | A kind of double breather valve deodorant masks |
| CN108136236A (en) * | 2015-10-16 | 2018-06-08 | 宋杨 | Micro particle filtering mask with fan Respiration assistance |
| WO2019104584A1 (en) * | 2017-11-30 | 2019-06-06 | Honeywell International Inc. | Rubber valve dust mask |
| CN110141745A (en) * | 2019-06-20 | 2019-08-20 | 浙江蓝禾医疗用品有限公司 | A kind of encapsulation type medical fluid piece placer accessory |
| CN112494837A (en) * | 2020-12-03 | 2021-03-16 | 林语轩 | High protective mask adaptive to facial features of infant |
| WO2021218968A1 (en) * | 2020-04-29 | 2021-11-04 | Duraflex Hong Kong Limited | Cord securing system for a face mask |
-
2014
- 2014-02-17 CN CN201420068055.1U patent/CN203763695U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104839910A (en) * | 2015-05-21 | 2015-08-19 | 马振原 | Single-point welding mask |
| CN108136236A (en) * | 2015-10-16 | 2018-06-08 | 宋杨 | Micro particle filtering mask with fan Respiration assistance |
| CN108136236B (en) * | 2015-10-16 | 2021-03-16 | 宋杨 | Particulate filter mask with fan breathing assistance |
| CN106490721A (en) * | 2016-10-09 | 2017-03-15 | 北京小米移动软件有限公司 | A kind of mask |
| CN106490721B (en) * | 2016-10-09 | 2018-03-16 | 北京小米移动软件有限公司 | A kind of mouth mask |
| CN107549897A (en) * | 2017-09-08 | 2018-01-09 | 盐城方天无纺制品有限公司 | A kind of double breather valve deodorant masks |
| WO2019104584A1 (en) * | 2017-11-30 | 2019-06-06 | Honeywell International Inc. | Rubber valve dust mask |
| CN111315451A (en) * | 2017-11-30 | 2020-06-19 | 霍尼韦尔国际公司 | Rubber valve dust mask |
| CN110141745A (en) * | 2019-06-20 | 2019-08-20 | 浙江蓝禾医疗用品有限公司 | A kind of encapsulation type medical fluid piece placer accessory |
| WO2021218968A1 (en) * | 2020-04-29 | 2021-11-04 | Duraflex Hong Kong Limited | Cord securing system for a face mask |
| US11606986B2 (en) | 2020-04-29 | 2023-03-21 | Duraflex Hong Kong Limited | Cord securing system |
| CN112494837A (en) * | 2020-12-03 | 2021-03-16 | 林语轩 | High protective mask adaptive to facial features of infant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20150217 |
|
| EXPY | Termination of patent right or utility model |