CN106823181A - Wear-type anti-virus respirator - Google Patents
Wear-type anti-virus respirator Download PDFInfo
- Publication number
- CN106823181A CN106823181A CN201710177264.8A CN201710177264A CN106823181A CN 106823181 A CN106823181 A CN 106823181A CN 201710177264 A CN201710177264 A CN 201710177264A CN 106823181 A CN106823181 A CN 106823181A
- Authority
- CN
- China
- Prior art keywords
- respirator
- virus
- wear
- type anti
- fixed mechanism
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/006—Indicators or warning devices, e.g. of low pressure, contamination
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/04—Couplings; Supporting frames
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/06—Mouthpieces; Nose-clips
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The present invention relates to wear-type anti-virus respirator, including respirator and respirator fixed mechanism；The respirator is adapted for surrounding the mouth and nose of user and the triangular solid component of chin；The respirator side offers ventilating opening, and opposite side outer offers exhaust outlet；The area of the exhaust outlet is not more than the area of ventilating opening；The respirator fixed mechanism includes the clamping muscle that anti-virus filter, air channel and breathing hood shape match；The respirator card is inserted in clamping muscle, and its ventilating opening is connected by air channel with anti-virus filter.The invention provides a kind of wearable on head, pollutant such as waste gas, the toxic granular that can not only cross in air filtering, additionally it is possible to efficient to filter out less than 0.3 micron or even nano level harmful virus, the respirator of protection user's health.
Description
Technical field
The present invention relates to a kind of wear-type anti-virus respirator, belong to cleaning equipment field.
Background technology
Virus only has 1 percent or so of bacterium size, does not have eucaryotic cell structure.The viral size having is at 100 nanometer (0.1
Micron) left and right, but also have very small common virus, such as coronavirus is 30 nanometers (0.03 micron), and foot and mouth disease virus is minimum
Only 7-8 nanometers.General mouth mask is preferable to larger particulate matter filter effect, such as 2.5 microns, 0.3 micron of particulate matter,
There is certain effect to bacterium, but it is undesirable to can easily pass through the virus effectiveness of biofilter.
Common mouth mask be by people's active inspiration, it is relatively elaborate, have sulks sense.Face fits with mouth mask and is difficult to accomplish completely
It is closed, easily there is the risk that the microorganisms such as virus enter from gap.The gas of people's exhalation is gone out from mouth mask gap, Chang Hui
The situation for causing wearing glasses' glasses to haze.And the gas of people's exhalation can be remained in mouth mask, the meeting again in next air-breathing
It is inhaled into, and it is unhealthy.Mouth mask filter material is made due to the gas penetration by a large amount of characteristics of contaminated respiratory droplets high humility and containing a large amount of microorganisms
Also can be very short with the life-span, it is usually disposable or daily one change.
Some electric masks are in the structure of common mouth mask, people's air-breathing to be replaced with motor, and more preferable using filter effect
Gas permeability also worse filter cloth simultaneously.This mouth mask solves the problems, such as that common mouth mask air-breathing is laborious, but if electricity not
When foot or electrical fault, the more risk of closed asphyxia can be caused.Meanwhile, using the filter cloth for filtering general particulate matter, not
The effect for effectively preventing virus can be played.Because such filter cloth is comparatively dense, putting on cannot be with extraneous normal talking after mouth mask.
In the occasion such as hospital and R＆D units, it is understood that there may be the danger that Causative virus and its attachment suspend in atmosphere
Danger.And for some constitutions chump or patient, in having the air of pollution, a small amount of virus is likely to cause larger prestige
The side of body.
Retrieval finds that the patent No. 201080041291.9, the patent of invention of Publication No. CN 102781520B is described
A kind of electric respirator, its breathing pipe protection for being primarily adapted for use in the toxic gas environment such as dust, tail gas can not be to trickle disease
Poison plays defense reaction, and the invention in addition has the shortcomings that complex structure, high cost and comfortableness are not enough.
To sum up, now needing research and development one kind can not only defend filtering dust, particulate matter etc., moreover it is possible to play anti-virus purpose
Breathing apparatus.
The content of the invention
It is an object of the invention to：For the problem that above-mentioned prior art is present, propose that a kind of structure design is simple, close
The high wear-type anti-virus respirator of reason, good filtration effect, comfortableness.
Machine is fixed in order to reach object above, wear-type anti-virus respirator of the invention, including respirator and respirator
Structure；The respirator is adapted for surrounding the mouth and nose of user and the structural member of chin；It is characterized in that：The respirator side
Ventilating opening is offered, opposite side outer offers exhaust outlet；The area of the exhaust outlet is not more than the area of ventilating opening；It is described to exhale
Suction hood fixed mechanism includes the clamping muscle that anti-virus filter, air channel and breathing hood shape match；The respirator card is inserted
In clamping muscle, its ventilating opening is connected by air channel with anti-virus filter.
Further, the respirator fixed mechanism is that bending extends to user's neck backward for both sides centered on clamping muscle
U-shaped structure on the outside of portion；The respirator fixed mechanism side is provided with air inlet；The anti-virus respirator is buckled in air inlet
It is internal.
Further, the area of the exhaust outlet is the 2/3 to 1/2 of ventilation open area.
Further, the also air flow drive device including being arranged in air inlet；The air flow drive device includes centrifugation
Blower fan.
Further, the respirator fixed mechanism is also equipped with power supply, controller and is connected with controller signals
Display screen and at least one air mass sensor.
Further, the air mass sensor will gather information transfer and be passed to controller and by wireless transmission method
To display terminal.
Further, fixture is installed between the two side ends of the respirator fixed mechanism.
Further, the fixture is elastic adjustable headband or neckstrap.
Further, the profile of the respirator matches with the snout shape of people；Its edge extends to inner side bending
Form one and enclose draw-in groove；The respirator is inserted on the clamping muscle of the respirator fixed mechanism by draw-in groove card.
Beneficial effect：It is wearable on head the invention provides one kind, the waste gas that can not only cross in air filtering, poisonous
The pollutants such as grain, additionally it is possible to efficient to filter out less than 0.3 micron or even nano level harmful virus, protection user's health
Respirator.Not only compact in structure, profile is attractive in appearance, is in structure unidirectional laminar flow in its respirator, it is ensured that extraneous virus
Inversely will not be sucked by human body into respirator.This respirator also has no asphyxiation hazard simultaneously, and wearer can be with the external world
The advantages of call.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structure front view of respirator in Fig. 1.
Fig. 3 is the structure dorsal view of respirator in Fig. 1.
Fig. 4 is the side view of respirator in Fig. 1.
Fig. 5 is the control principle drawing of embodiment 1.
Specific embodiment
Embodiment one
The wear-type anti-virus respirator of the present embodiment, structure is as Figure 1-4：Fixed including respirator 2 and respirator
Mechanism 1；The respirator 2 is adapted for surrounding the mouth and nose of user and the structural member of chin；The respirator side offers
Ventilating opening 2-1, the respirator fixed mechanism 1 includes the clamping that anti-virus filter, air channel and breathing hood shape match
Muscle；The card of the respirator 2 is inserted in clamping muscle, and its ventilating opening 2-1 is connected by air channel with anti-virus filter.Ventilating opening 2-
1 receives the cleaned air that air channel is brought.In the outer of offside, the position slightly higher or lower slightly with ventilating opening 2-1 similar elevations,
There is an open exhaust outlet 2-2.The exhaust outlet 2-2 areas of respirator are the 2/3 of ventilating opening 2-1 areas, can so be tieed up
Handling in respirator has certain pressure-fired, plays more preferable protective effect.
This ventilating opening 2-1 and exhaust outlet 2-2 symmetrical setting so that internal gas flow is presented the stably stratified flow from mouth and nose
Feature, is prevented effectively from the intrusion of environmental contaminants and virus.The characteristics of laminar flow is air-flow into opposing parallel, spy from level to level
Point, stable moves to outlet from import.With the diffusing of common mouth mask or electric mask (air-flow is presented from surrounding toward center, or
The characteristics of opposite direction) it is significantly different, the unconspicuous sinuous flow difference of eddy-currents or rule being blown into blower fan rotation is bigger.
Laminar flow can ensure that air-flow revolution therein and collision are reduced to minimum, it is ensured that the pollutant or virus of exhaust outlet will not be by parts
Opposite direction air-flow is taken at the breathing of mouth and nose.
Meanwhile, the exhaust outlet 2-2 designs that this is opened so that respirator under extreme service condition (including running down of battery,
Blower fan damage etc.) all without the danger for producing asphyxia, go for lumbering the elderly and child.Due to wearer's
Sound can spread out of with the air of laminar flow from exhaust outlet, can play a part of call.
The respirator fixed mechanism 1 is that bending is extended on the outside of user's neck backward for both sides centered on clamping muscle
U-shaped structure.The profile of the respirator matches with the snout shape of people；Its edge extends to form a circle card to inner side bending
Groove；The respirator is inserted on the clamping muscle of the respirator fixed mechanism by draw-in groove card.Respirator uses soft silica gel material
It is made；Can also take when necessary and clean or replace, it is easy to loading and unloading quick.
The side of respirator fixed mechanism 1 is provided with air inlet 1-1；The anti-virus respirator is buckled in air inlet 1-1
It is internal.Both the effect for being not through virus had been played, the effect of user's replaceable filter had also been can reach.
Present invention additionally comprises the centrifugal blower being arranged in air inlet 1-1, the laminar flow of stabilization is provided for respirator.Therefore,
Respirator and need not having with the Head And Face of user is completely close to, and this is also to use a upper convenience.Air is from filter
Air port enter, by blower fan after filtering, air channel enters into the sidepiece of the respirator of front portion, is then passed through in the way of laminar flow
Breathing area, from the exhaust outlet discharge of the opposite side of respirator.
The air quantity of respirator, user can directly adjust centrifugal blower.To ensure the respiratory intensity of all age group user,
The maximum quantity of wind that respirator is provided should be not less than 80ml/min.
This technology does not limit the blower fan type for using.But to coordinate the use of anti-virus filter, design effect is reached,
Centrifugal fan should be used.Simultaneously, it should be noted that reduce noise, the interference to user is reduced.
The respirator fixed mechanism 1 be also equipped with power supply, controller and the display screen 4 that is connected with controller signals with
And two air mass sensors.The power supply, controller, display screen 4 and one of air mass sensor are arranged on
The opposite side in the non-air channel of respirator fixed mechanism 1, is symmetrically installed with anti-virus respirator；Air matter in detection external environment condition
Amount.The setting of this sidepiece part, is primarily due to keep balance and space to be limited with opposite side weight, not in principle must
Separated with opposite side.The Main Function of battery is for blower fan provides electric power, while being that user interface or the air quality of apolegamy are passed
Sensor provides electric power.In order to easy to use, respirator uses rechargeable battery.
In order to monitor the air quality in respirator, another air mass sensor may be mounted at the wind of respirator
Whether in road, i.e., to before spray mask from behind virus filter, it is cleaned totally for real-time monitoring air.If empty
Gas is not cleaned totally, and whether the situation that user can be pointed out to check respirator is good, or changes anti-virus filter.
As shown in Figure 5：Two numerical value of air mass sensor, with respirator state in itself, may be displayed on breathing
On the display screen of device.Can also by transmission means such as bluetooth or wifi, be sent to the first-class mode of mobile phone provide user or
Person guardian checks, plays a moment protection and collect the mode of data simultaneously.
Flexible adjustable headband 3 is installed between the two side ends of the respirator fixed mechanism 1.Connector can also be used
Two kinds of wearing modes of band.It is the top or side rear portion that respirator is fixed on head with headband using the wearing mode of headband.Use
Neckstrap, can be fastened on neck with the mode of buckle by respirator.The user suitable for different head sizes can be automatically adjusted.
In addition to the implementation, the present invention can also have other embodiment.All use equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (10)
1. wear-type anti-virus respirator, including respirator and respirator fixed mechanism；It is characterized in that：The respirator is suitable
In the mouth and nose and the triangular solid component of chin that surround user；The respirator side offers ventilating opening, opposite side
Outer offers exhaust outlet；The area of the exhaust outlet is not more than the area of ventilating opening.
2. wear-type anti-virus respirator according to claim 1, it is characterised in that：The respirator fixed mechanism includes
The clamping muscle that anti-virus filter, air channel and breathing hood shape match；The respirator card is inserted in clamping muscle, its ventilation
Mouth is connected by air channel with anti-virus filter.
3. wear-type anti-virus respirator according to claim 2, it is characterised in that：The respirator fixed mechanism be with
Bending extends to U-shaped structure on the outside of user's neck backward for both sides centered on clamping muscle；The respirator fixed mechanism side
It is provided with air inlet；The anti-virus respirator is buckled in inside air inlet.
4. wear-type anti-virus respirator according to claim 3, it is characterised in that：The area of the exhaust outlet is ventilation
The 2/3 to 1/2 of open area.
5. wear-type anti-virus respirator according to claim 4, it is characterised in that：Also include being arranged in air inlet
Air flow drive device；The air flow drive device includes centrifugal blower.
6. wear-type anti-virus respirator according to claim 5, it is characterised in that：The respirator fixed mechanism is also pacified
Equipped with power supply, controller and the display screen and at least one air mass sensor that are connected with controller signals.
7. wear-type anti-virus respirator according to claim 6, it is characterised in that：The power supply, controller, display screen
And an air mass sensor is symmetrically pacified installed in the non-air channel side of respirator fixed mechanism with anti-virus respirator
Dress；Second air mass sensor is arranged in the air channel behind anti-virus filter；Two air mass sensors will be adopted
Collection information transfer reaches display terminal to controller and by wireless transmission method.
8. the wear-type anti-virus respirator according to claim any one of 1-7, it is characterised in that：The respirator is fixed
Fixture is installed between the two side ends of mechanism.
9. wear-type anti-virus respirator according to claim 8, it is characterised in that：The fixture is adjustable for elasticity
Headband or neckstrap.
10. wear-type anti-virus respirator according to claim 9, it is characterised in that：The profile of the respirator and people
Snout shape match；Its edge extends to form a circle draw-in groove to inner side bending；The respirator is inserted in by draw-in groove card
On the clamping muscle of the respirator fixed mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100493178 | 2017-01-20 | ||
| CN201710049317 | 2017-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106823181A true CN106823181A (en) | 2017-06-13 |
Family
ID=59130846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710177264.8A Pending CN106823181A (en) | 2017-01-20 | 2017-03-23 | Wear-type anti-virus respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106823181A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376146A (en) * | 2017-08-23 | 2017-11-24 | 苏州倍安电子科技有限公司 | Laminar-flow type purifying respirator |
| CN107998530A (en) * | 2017-11-22 | 2018-05-08 | 天津深呼吸博睿环境科技有限公司 | A kind of Multifunctional gauze mask |
| WO2019172853A1 (en) * | 2018-03-09 | 2019-09-12 | Innosparks Pte Ltd | Integrated fit testing ventilator for facemasks |
| CN110772724A (en) * | 2018-07-30 | 2020-02-11 | 埃尔百利斯加私人有限公司 | Filter mask device |
| CN111163842A (en) * | 2017-10-13 | 2020-05-15 | 艾姆维尔控股有限公司 | Multifunctional multipurpose breathing mask |
| CN112426639A (en) * | 2020-11-27 | 2021-03-02 | 湖南大学 | Wearable miniature air curtain system for protecting mouth and nose |
| CN113453766A (en) * | 2019-04-04 | 2021-09-28 | 喜利得股份公司 | Device for generating an air curtain in front of the face of a user |
| WO2021218975A1 (en) * | 2020-04-27 | 2021-11-04 | 浙江兴昌风机有限公司 | Protective disinfection device |
| US11938352B2 (en) | 2020-01-23 | 2024-03-26 | Suzaleja B.V. | Filtering mask assembly |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636640Y (en) * | 2003-07-07 | 2004-09-01 | 李宝英 | Aerated isolation garment for preventing SARS infection |
| EP1945347A2 (en) * | 2005-11-08 | 2008-07-23 | Next Safety, Inc. | Air supply apparatus |
| US20090217926A1 (en) * | 2005-10-13 | 2009-09-03 | Avon Polymer Products Limited | Respirator |
| WO2013082649A1 (en) * | 2011-12-05 | 2013-06-13 | Paftec Technologies Pty Ltd | Improved breathing apparatus |
| WO2013082650A1 (en) * | 2011-12-05 | 2013-06-13 | Paftec Technologies Pty Ltd | Respiration apparatus |
| CN104415473A (en) * | 2013-09-10 | 2015-03-18 | 哈尔滨安赛福经贸有限公司 | Automatic circulating mask |
| CN204364702U (en) * | 2014-12-19 | 2015-06-03 | 四川创越炭材料有限公司 | A kind of face mask type air purifier |
| CN105771107A (en) * | 2016-04-26 | 2016-07-20 | 王赫奕 | Non-stuffy and actual effect-displayable automatic haze blocking device, blocking method and application |
| CN105879254A (en) * | 2016-05-06 | 2016-08-24 | 天津市众联科技发展有限公司 | Local air purifier for outdoor riding |
| CN206730301U (en) * | 2017-01-20 | 2017-12-12 | 苏州倍安电子科技有限公司 | Wear-type anti-virus respirator |
-
2017
- 2017-03-23 CN CN201710177264.8A patent/CN106823181A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2636640Y (en) * | 2003-07-07 | 2004-09-01 | 李宝英 | Aerated isolation garment for preventing SARS infection |
| US20090217926A1 (en) * | 2005-10-13 | 2009-09-03 | Avon Polymer Products Limited | Respirator |
| EP1945347A2 (en) * | 2005-11-08 | 2008-07-23 | Next Safety, Inc. | Air supply apparatus |
| WO2013082649A1 (en) * | 2011-12-05 | 2013-06-13 | Paftec Technologies Pty Ltd | Improved breathing apparatus |
| WO2013082650A1 (en) * | 2011-12-05 | 2013-06-13 | Paftec Technologies Pty Ltd | Respiration apparatus |
| CN104415473A (en) * | 2013-09-10 | 2015-03-18 | 哈尔滨安赛福经贸有限公司 | Automatic circulating mask |
| CN204364702U (en) * | 2014-12-19 | 2015-06-03 | 四川创越炭材料有限公司 | A kind of face mask type air purifier |
| CN105771107A (en) * | 2016-04-26 | 2016-07-20 | 王赫奕 | Non-stuffy and actual effect-displayable automatic haze blocking device, blocking method and application |
| CN105879254A (en) * | 2016-05-06 | 2016-08-24 | 天津市众联科技发展有限公司 | Local air purifier for outdoor riding |
| CN206730301U (en) * | 2017-01-20 | 2017-12-12 | 苏州倍安电子科技有限公司 | Wear-type anti-virus respirator |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107376146A (en) * | 2017-08-23 | 2017-11-24 | 苏州倍安电子科技有限公司 | Laminar-flow type purifying respirator |
| CN111163842A (en) * | 2017-10-13 | 2020-05-15 | 艾姆维尔控股有限公司 | Multifunctional multipurpose breathing mask |
| US11904192B2 (en) | 2017-10-13 | 2024-02-20 | Aimwell Holding Pty Ltd | Versatile and multi-purpose breathing mask |
| CN107998530A (en) * | 2017-11-22 | 2018-05-08 | 天津深呼吸博睿环境科技有限公司 | A kind of Multifunctional gauze mask |
| WO2019172853A1 (en) * | 2018-03-09 | 2019-09-12 | Innosparks Pte Ltd | Integrated fit testing ventilator for facemasks |
| CN110772724A (en) * | 2018-07-30 | 2020-02-11 | 埃尔百利斯加私人有限公司 | Filter mask device |
| CN113453766A (en) * | 2019-04-04 | 2021-09-28 | 喜利得股份公司 | Device for generating an air curtain in front of the face of a user |
| CN113453766B (en) * | 2019-04-04 | 2022-08-23 | 喜利得股份公司 | Device for producing an air curtain in front of the face of a user |
| US11938352B2 (en) | 2020-01-23 | 2024-03-26 | Suzaleja B.V. | Filtering mask assembly |
| WO2021218975A1 (en) * | 2020-04-27 | 2021-11-04 | 浙江兴昌风机有限公司 | Protective disinfection device |
| CN112426639A (en) * | 2020-11-27 | 2021-03-02 | 湖南大学 | Wearable miniature air curtain system for protecting mouth and nose |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106823181A (en) | Wear-type anti-virus respirator | |
| CN105056424B (en) | A kind of individual wearable air cleaning balance system | |
| US20180296864A1 (en) | Respirator | |
| US20100108071A1 (en) | Apparatuses to filter air | |
| US7543585B2 (en) | Unobtrusive personal air filtration device | |
| CN106823178A (en) | A kind of intelligence wearing cleaning equipment | |
| JP2007151823A (en) | Attachment of portable air conditioner and portable air conditioner | |
| CN113873909B (en) | Wearable air purification system | |
| CN105999576A (en) | Head-wearing type air purification respirator | |
| CN105617565A (en) | Filtration type breathing mask | |
| CN103263736B (en) | Portable air-purifying filter | |
| CN108066912A (en) | Breathe half face shield | |
| CN206730301U (en) | Wear-type anti-virus respirator | |
| CN203154650U (en) | Chargeable micron particulate matter protective head cover | |
| CN205252344U (en) | Can effectively guarantee to breathe smooth and easy portable air purifier | |
| CN206183827U (en) | Ear muff formula non -resistance respiratory device | |
| CN214856923U (en) | Circular protective belt for nucleic acid determination | |
| CN212306969U (en) | Anti-virus, anti-dust temp. -regulating wind curtain cap | |
| CN207203247U (en) | Laminar-flow type purifying respirator | |
| CN106820346A (en) | Aid in into outlet haze mouth mask | |
| KR20210136887A (en) | multi air purifier of face shield type | |
| CN207383603U (en) | A kind of multiple filtration type mask | |
| CN1843526A (en) | Concealed respirator for gas defence | |
| CN111359115A (en) | Wearable neck formula air disinfection purification unit that hangs | |
| CN107376146A (en) | Laminar-flow type purifying respirator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
|
| RJ01 | Rejection of invention patent application after publication |