CN207881729U - A kind of environment detector easy to carry - Google Patents
A kind of environment detector easy to carry Download PDFInfo
- Publication number
- CN207881729U CN207881729U CN201820021680.9U CN201820021680U CN207881729U CN 207881729 U CN207881729 U CN 207881729U CN 201820021680 U CN201820021680 U CN 201820021680U CN 207881729 U CN207881729 U CN 207881729U
- Authority
- CN
- China
- Prior art keywords
- under casing
- side wall
- lead screw
- wall
- carry
- 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.)
- Active
Links
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model provides a kind of environment detector easy to carry, is related to technical field of environmental detection.The environment detector easy to carry, including detector ontology, the bottom of the detector ontology is installed under casing, the bottom of under casing is installed with feet, the side wall of detector ontology is bonded with fixed block, the top of fixed block be flexibly connected by the bottom of movable part and bottom cylinder, and the top at bottom tin is bonded with handle inserted with telescopic rod at the top of telescopic rod.The environment detector easy to carry; the rotation of lead screw is controlled by rotation; keep two turbines being threadedly coupled with it close to each other or separate in the outer surface of lead screw, drives bent rod to move downward, bottom plate is compressed downwards; the universal wheel of shock-absorbing foot and its bottom is driven to move downward; universal wheel is contacted with ground, makes the mobile enhanced convenience of the device, and be provided with shock-absorbing foot; the vibration generated when being moved to it effectively protects detection device into row buffering energy dissipating.
Description
Technical field
The utility model is related to technical field of environmental detection, specially a kind of environment detector easy to carry.
Background technology
Environment measuring is the detection and improvement to environment, is a technical very strong emerging industry.And enter into indoor ring
The executive that border detection is administered faces emerging industry, either the market promotion or examination criteria, testing process, industry
Occupational characteristic and improvement product or construction method will be from the beginning.The dielectric object of environment measuring is broadly divided into water quality inspection
Survey, air detection, Soil K+adsorption, solid waste detection, biological detection, noise, vibration detection, electromagnet radiation detection, radioactivity
Detection, heat detection, light detection and health detection etc., environment detector is a kind of instrument of environment measuring.Environment measuring of today
Instrument is inconvenient to carry, influences its use.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of environment detector easy to carry, solves not
The problem of being convenient for carrying, influencing its use.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs：A kind of environment easy to carry
The bottom of detector, including detector ontology, the detector ontology is installed under casing, and peace is fixed in the bottom of the under casing
Equipped with feet, the side wall of the detector ontology is bonded with fixed block, and the top of the fixed block passes through movable part and bottom cylinder
Bottom is flexibly connected, and the top of bottom cylinder is bonded with handle inserted with telescopic rod at the top of the telescopic rod, the bottom cylinder
Side wall is bonded with fixture block compatible with telescopic rod inserted with fixing bolt, the side wall of the detector ontology.
The side wall of the under casing is provided with handle, and the internal whorl of the handle is connected with restriction bolt, and the handle leans on
The side of nearly under casing is welded with bull stick, and the one end of the bull stick far from handle is through the side wall of fixing bearing and under casing and extends to
The inside of under casing is Nian Jie with the driving side wall of gear, and the side wall of the driving gear is provided with the transmission gear engaged, institute
The inside of transmission gear is stated through having lead screw, the bearing that the lead screw is arranged by its both ends to live respectively with the both sides inner wall of under casing
Dynamic connection.
The midline of the lead screw, which is arranged, is bonded with middle position block, the outer surface of the lead screw and positioned at middle position block both sides it is equal
Be threaded with turbine, the sidewall weld of the turbine has a slide bar, the bottom of the turbine pass through movable part and bent rod one
End flexible connection, the other end of the bent rod are flexibly connected by movable part with the side of middle position block, the inside of the under casing
And bottom plate is provided with below bent rod, the sidewall weld of the bottom plate has gag lever post, the bottom of the bottom plate to be fixedly mounted
There are shock-absorbing foot, the bottom of the shock-absorbing foot to be installed with universal wheel.
The shock-absorbing foot includes boom and sleeve, and the top of the boom through the bottom of sleeve and extends to the interior of sleeve
Portion and the bottom of limiting plate are welded, and the top of the limiting plate and the bottom of spring are welded, the top of the spring and sleeve
At the top of inner wall.
Preferably, the quantity of the feet is four, and the feet that quantity is four is respectively arranged at the four of under casing bottom
Angle.
Preferably, the outer wall welding of the inner ring inner wall and bull stick of the fixing bearing, the fixing bearing is close under casing
Side outer ring is Nian Jie with the side wall of under casing.
Preferably, the inner wall of the under casing offers sliding slot compatible with slide bar, and the one end of slide bar far from turbine is prolonged
The inner cavity for extending to sliding slot is contacted with the inner wall of sliding slot.
Preferably, the lead screw is centered on middle position block, and the externally threaded ridge orientation of both sides is opposite.
Preferably, the bent rod is made of two sections of quarter butts, is flexibly connected by movable part between two quarter butts.
(3) advantageous effect
The utility model provides a kind of environment detector easy to carry.What is had has the beneficial effect that：
1, the environment detector easy to carry drives the rotation of bull stick, the dynamic transmission of driving gear band by rotating handle
The rotation of gear, the rotation of lead screw make two turbines being threadedly coupled with it in the outer surface of lead screw close to each other or separate, band
Dynamic bent rod moves downward, and bottom plate is compressed downwards, and the universal wheel of shock-absorbing foot and its bottom is driven to move downward, universal wheel and ground
Face contacts, and makes the mobile enhanced convenience of the device, and be provided with shock-absorbing foot, has damping performance, generated when being moved to it
It vibrates into row buffering energy dissipating, effectively detection device is protected.
2, control telescopic rod is inserted into the depth inside the cylinder of bottom, the height of regulation handle, and rotary fixing screw bolt makes it and stretches
Bar contradicts, and telescopic rod is fixed, you can the height for regulating and controlling handle makes the personnel for being highly suitable for various heights of handle use, carries
The high mobile comfort of the detector, while bottom cylinder is rotatable, comfort more preferably, is provided with feet when mobile, is rubber material
Matter is made, and increases the contact friction force that the environment detector easy to carry easily sets up face, difficult to slide, keeps its fixed more
Add stabilization, while rubber has good damping performance, can avoid the vibration of the device when being contacted with ground and device is caused to damage
It is bad, effectively extend the service life of the environment detector easy to carry.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the partial structurtes enlarged drawing of A in the utility model Fig. 1；
Fig. 3 is the utility model shock-absorbing foot structural schematic diagram.
In figure：1 detector ontology, 2 under casings, 3 feets, 4 fixed blocks, 5 bottoms cylinder, 6 telescopic rods, 7 handles, 8 fixture blocks, 9 are fixed
Position block in bolt, 10 lead screws, 11 bearings, 12,13 turbines, 14 bent rods, 15 slide bars, 16 bottom plates, 17 gag lever posts, 18 shock-absorbing foots,
19 universal wheels, 20 transmission gears, 21 driving gears, 22 bull sticks, 23 fixing bearings, 24 handles, 25 limit bolt, 26 booms, 27
Sleeve, 28 limiting plates, 29 springs.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The utility model embodiment provides a kind of environment detector easy to carry, as shown in Figs. 1-3, including detector sheet
The bottom of body 1, detector ontology 1 is installed under casing 2, and the bottom of under casing 2 is installed with feet 3, and the quantity of feet 3 is
Four, and quantity is the quadrangle that four feets 3 are respectively arranged at 2 bottom of under casing, feet 3 is made of rubber material, increases
The environment detector easy to carry easily sets up the contact friction force in face, difficult to slide, keeps its fixed more stable, while rubber
Glue has good damping performance, can avoid the vibration of the device when being contacted with ground and is damaged to device, effective to extend
The service life of the environment detector easy to carry, the side wall of detector ontology 1 are bonded with fixed block 4, the top of fixed block 4
Portion is flexibly connected by movable part with the bottom of bottom cylinder 5, and inserted with telescopic rod 6, the top of telescopic rod 6 is bonded at the top of bottom cylinder 5
There is handle 7, for the side wall of bottom cylinder 5 inserted with fixing bolt 9, the side wall of bottom cylinder 5 offers screw hole compatible with fixing bolt 9,
And the inner wall of screw hole is provided with internal thread compatible with the external screw thread of fixing bolt 9, the side wall of detector ontology 1 be bonded with
6 compatible fixture block 8 of telescopic rod, control telescopic rod 6 are inserted into the depth inside bottom cylinder 5, the height of regulation handle 7, and rotation is fixed
Bolt 9 makes it be contradicted with telescopic rod 6, and telescopic rod 6 is fixed, you can the height of regulation and control handle 7 makes being highly suitable for respectively for handle 7
The personnel of kind of height use, and improve the mobile comfort of the detector, while bottom cylinder 5 is rotatable, and comfort is more preferably when mobile.
The side wall of under casing 2 is provided with handle 24, and the internal whorl of handle 24, which is connected with, limits bolt 25, the side wall of under casing 2
Mounting hole compatible with bolt 25 is limited is offered, rotation limits the inside that bolt 25 is extended to mounting hole, you can will
Handle 24 is fixed, and prevents its rotation, and handle 24 is welded with bull stick 22 close to the side of under casing 2, bull stick 22 far from handle 24 one
It holds the side wall for running through fixing bearing 23 and under casing 2 and the inside for extending under casing 2 is Nian Jie with the driving side wall of gear 21, it is fixed
The inner ring inner wall of bearing 23 is welded with the outer wall of bull stick 22, side of the fixing bearing 23 close to the side outer ring and under casing 2 of under casing 2
Wall is bonded, and the side that fixing bearing 23 is fixed under casing 2 for bull stick 22 provides supporting point, and the side wall of driving gear 21 is provided with
The quantity of the transmission gear 20 engaged, transmission gear 20 is two, and the transmission gear 20 that quantity is two is symmetrical arranged
In the both sides of driving gear 21, the inside of transmission gear 20, which is run through, lead screw 10, the bearing 11 that lead screw 10 is arranged by its both ends
It is flexibly connected respectively with the both sides inner wall of under casing 2, bearing 11 makes the rotation of lead screw 10 more stablize.
The midline of lead screw 10, which is arranged, is bonded with middle position block 12, and lead screw 10 is centered on middle position block 12, and the outer spiral shell of both sides
The ridge orientation of line positioned at the both sides of middle position block 12 on the contrary, the outer surface of lead screw 10 and be threaded with turbine 13, two whirlpools
Wheel 13 is close to each other with the rotation of lead screw 10 or is located remotely from each other, and the sidewall weld of turbine 13 has slide bar 15, the inner wall of under casing 2
Sliding slot compatible with slide bar 15 is offered, and the one end of slide bar 15 far from turbine 13 extends in the inner cavity and sliding slot of sliding slot
Wall contacts, and the bottom of turbine 13 is flexibly connected by movable part with one end of bent rod 14, and the other end of bent rod 14 passes through work
Moving part is flexibly connected with the side of middle position block 12, and bent rod 14 is made of two sections of quarter butts, by movable part activity between two quarter butts
Connection, the inside of under casing 2 and is provided with bottom plate 16 positioned at the lower section of bent rod 14, and the sidewall weld of bottom plate 16 has gag lever post 17, bottom
The bottom of plate 16 is installed with shock-absorbing foot 18, and the bottom of shock-absorbing foot 18 is installed with universal wheel 19, and rotation handle 24 drives
The rotation of bull stick 22 drives rotation of the gear 21 with nutating gear 20, the rotation of lead screw 10 to make two be threadedly coupled with it
Turbine 13 is close to each other or separate in the outer surface of lead screw 10, drives bent rod 14 to move downward, bottom plate 16 is compressed downwards, band
Dynamic shock-absorbing foot 18 and its universal wheel 19 of bottom move downward, and universal wheel 19 is contacted with ground, makes the movement of the device more
It is convenient, and it is provided with shock-absorbing foot 18, have damping performance, the vibration generated when being moved to it effective right into row buffering energy dissipating
Detection device is protected.
Shock-absorbing foot 18 includes boom 26 and sleeve 27, and the top of boom 26 through the bottom of sleeve 27 and extends to sleeve 27
The bottom of inside and limiting plate 28 weld, the top of limiting plate 28 is welded with the bottom of spring 29, the top of spring 29 and set
At the top of the inner wall of cylinder 27.
Operation principle：The rotation that handle 24 drives bull stick 22 is rotated, rotation of the gear 21 with nutating gear 20 is driven,
The rotation of lead screw 10 keeps two turbines 13 being threadedly coupled with it close to each other or separate in the outer surface of lead screw 10, drives bending
Bar 14 moves downward, and bottom plate 16 is compressed downwards, drives the universal wheel 19 of shock-absorbing foot 18 and its bottom to move downward, universal wheel 19
It is contacted with ground, makes the mobile enhanced convenience of the device.
In conclusion the environment detector easy to carry, the rotation of bull stick 22, sliding tooth are driven by rotating handle 24
21 rotations with nutating gear 20 are taken turns, the rotation of lead screw 10 makes two turbines 13 being threadedly coupled with it in the appearance of lead screw 10
Face is close to each other or separate, drives bent rod 14 to move downward, bottom plate 16 is compressed downwards, drives shock-absorbing foot 18 and its bottom
Universal wheel 19 moves downward, and universal wheel 19 is contacted with ground, makes the mobile enhanced convenience of the device, and be provided with shock-absorbing foot
18, there is damping performance, the vibration generated when being moved to it effectively to be protected into row buffering energy dissipating to detection device.
Also, the depth that telescopic rod 6 is inserted into inside bottom cylinder 5, the height of regulation handle 7 are controlled, rotary fixing screw bolt 9 makes it
It is contradicted with telescopic rod 6, telescopic rod 6 is fixed, you can the height of regulation and control handle 7 makes the people for being highly suitable for various heights of handle 7
Member uses, and improves the mobile comfort of the detector, while bottom cylinder 5 is rotatable, comfort more preferably, is provided with feet when mobile
3, it is made of rubber material, increases the contact friction force that the environment detector easy to carry easily sets up face, it is difficult to slide, make
Its is fixed more stable, while rubber has good damping performance, can avoid the vibration pair of the device when being contacted with ground
Device damages, and effectively extends the service life of the environment detector easy to carry.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment including a series of elements includes not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of environment detector easy to carry, including detector ontology (1), it is characterised in that：The detector ontology (1)
Bottom be installed under casing (2), the bottom of the under casing (2) is installed with feet (3), the detector ontology (1)
Side wall be bonded with fixed block (4), the top of the fixed block (4) is flexibly connected by movable part with the bottom of bottom cylinder (5), institute
The top of bottom cylinder (5) is stated inserted with telescopic rod (6), handle (7) is bonded at the top of the telescopic rod (6), the bottom cylinder (5)
Side wall is bonded with and the compatible fixture block of telescopic rod (6) inserted with fixing bolt (9), the side wall of the detector ontology (1)
(8)；
The side wall of the under casing (2) is provided with handle (24), and the internal whorl of the handle (24), which is connected with, limits bolt (25),
The handle (24) is welded with bull stick (22) close to the side of under casing (2), and the one end of the bull stick (22) far from handle (24) is passed through
It wears the side wall of fixing bearing (23) and under casing (2) and the inside for extending under casing (2) is Nian Jie with the side wall of driving gear (21), institute
The side wall for stating driving gear (21) is provided with the transmission gear (20) engaged, and the inside of the transmission gear (20), which is run through, to be had
Lead screw (10), the bearing (11) that the lead screw (10) is arranged by its both ends are flexibly connected with the both sides inner wall of under casing (2) respectively；
The midline of the lead screw (10), which is arranged, is bonded with middle position block (12), the outer surface of the lead screw (10) and be located at middle position block
(12) both sides are threaded with turbine (13), and the sidewall weld of the turbine (13) has slide bar (15), the turbine (13)
Bottom be flexibly connected with one end of bent rod (14) by movable part, the other end of the bent rod (14) by movable part with
The side of middle position block (12) is flexibly connected, and the inside of the under casing (2) and is provided with bottom plate (16) below bent rod (14),
The sidewall weld of the bottom plate (16) has gag lever post (17), the bottom of the bottom plate (16) to be installed with shock-absorbing foot (18), institute
The bottom for stating shock-absorbing foot (18) is installed with universal wheel (19)；
The shock-absorbing foot (18) includes boom (26) and sleeve (27), and the bottom of sleeve (27) is run through at the top of the boom (26)
And extend to the inside of sleeve (27) and welded with the bottom of limiting plate (28), top and the spring (29) of the limiting plate (28)
Bottom is welded, the top of the spring (29) and the inner wall top of sleeve (27).
2. a kind of environment detector easy to carry according to claim 1, it is characterised in that：The number of the feet (3)
Amount is four, and quantity is the quadrangle that four feets (3) are respectively arranged under casing (2) bottom.
3. a kind of environment detector easy to carry according to claim 1, it is characterised in that：The fixing bearing (23)
The outer wall of inner ring inner wall and bull stick (22) weld, the fixing bearing (23) is close to the side outer ring of under casing (2) and under casing (2)
Side wall bonding.
4. a kind of environment detector easy to carry according to claim 1, it is characterised in that：The under casing (2) it is interior
Wall offer with the compatible sliding slot of slide bar (15), and the one end of slide bar (15) far from turbine (13) extend to the inner cavity of sliding slot with
The inner wall of sliding slot contacts.
5. a kind of environment detector easy to carry according to claim 1, it is characterised in that：The lead screw (10) is in
Centered on position block (12), and the externally threaded ridge orientation of both sides is opposite.
6. a kind of environment detector easy to carry according to claim 1, it is characterised in that：The bent rod (14) by
Two sections of quarter butts form, and are flexibly connected by movable part between two quarter butts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820021680.9U CN207881729U (en) | 2018-01-07 | 2018-01-07 | A kind of environment detector easy to carry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820021680.9U CN207881729U (en) | 2018-01-07 | 2018-01-07 | A kind of environment detector easy to carry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207881729U true CN207881729U (en) | 2018-09-18 |
Family
ID=63505907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820021680.9U Active CN207881729U (en) | 2018-01-07 | 2018-01-07 | A kind of environment detector easy to carry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207881729U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612531A (en) * | 2018-12-28 | 2019-04-12 | 安徽大学 | A kind of monitoring device for ecological environment treatment |
| CN110596324A (en) * | 2019-10-14 | 2019-12-20 | 镇江市高等专科学校 | Highway air quality detection device |
| CN111610842A (en) * | 2020-05-20 | 2020-09-01 | 郑州铁路职业技术学院 | Computer modularization power supply module protection device |
| CN111994501A (en) * | 2020-08-07 | 2020-11-27 | 安徽省欣雨环卫机械有限公司 | Garbage classification sanitation garbage bin convenient to use |
| CN112557143A (en) * | 2020-12-24 | 2021-03-26 | 生态环境部南京环境科学研究所 | A soil sample pretreatment device for lead-zinc slay heavy metal content detects |
| CN113008876A (en) * | 2021-02-26 | 2021-06-22 | 武胜县环境监测站 | Measuring equipment for formaldehyde in ambient air |
| CN114568259A (en) * | 2022-02-12 | 2022-06-03 | 重庆电子工程职业学院 | Orchard intelligence irrigation equipment based on thing networking |
-
2018
- 2018-01-07 CN CN201820021680.9U patent/CN207881729U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612531A (en) * | 2018-12-28 | 2019-04-12 | 安徽大学 | A kind of monitoring device for ecological environment treatment |
| CN110596324A (en) * | 2019-10-14 | 2019-12-20 | 镇江市高等专科学校 | Highway air quality detection device |
| CN111610842A (en) * | 2020-05-20 | 2020-09-01 | 郑州铁路职业技术学院 | Computer modularization power supply module protection device |
| CN111994501A (en) * | 2020-08-07 | 2020-11-27 | 安徽省欣雨环卫机械有限公司 | Garbage classification sanitation garbage bin convenient to use |
| CN111994501B (en) * | 2020-08-07 | 2022-08-19 | 安徽省欣雨环卫机械有限公司 | Garbage classification sanitation garbage bin convenient to use |
| CN112557143A (en) * | 2020-12-24 | 2021-03-26 | 生态环境部南京环境科学研究所 | A soil sample pretreatment device for lead-zinc slay heavy metal content detects |
| CN113008876A (en) * | 2021-02-26 | 2021-06-22 | 武胜县环境监测站 | Measuring equipment for formaldehyde in ambient air |
| CN113008876B (en) * | 2021-02-26 | 2023-08-15 | 广东达康安全技术咨询有限公司 | Determination equipment for formaldehyde in ambient air |
| CN114568259A (en) * | 2022-02-12 | 2022-06-03 | 重庆电子工程职业学院 | Orchard intelligence irrigation equipment based on thing networking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207881729U (en) | A kind of environment detector easy to carry | |
| CN208566001U (en) | Bracket is used in a kind of detection of Soil Geologic environment | |
| CN206530840U (en) | A kind of professional animation portable adjustable camera support | |
| CN209065196U (en) | A kind of guiding device of rewinding machine | |
| CN108449663A (en) | A kind of adjustable sound-box device | |
| CN108464864A (en) | A kind of medical cart with stabilization function | |
| CN208580016U (en) | A kind of Portable-type furniture factory dust detector | |
| CN207464328U (en) | A kind of cutter device of non-ferrous alloy metal bar | |
| CN209195144U (en) | Arc tent dome stress auxiliary body | |
| CN208860431U (en) | Level measurement device | |
| CN208237351U (en) | A kind of fixed device of purifier | |
| CN207599636U (en) | A kind of medical lamp for being conveniently replaceable lamp cap | |
| CN106113012A (en) | A kind of all-purpose robot being provided with the swingable adjutage stretched | |
| CN214673456U (en) | Tourist attraction ancient building protection lightning arrester | |
| CN204359304U (en) | Portable stand fixed by spirit-leveling instrument | |
| CN208065640U (en) | A kind of box horse of the physical education convenient for adjusting | |
| CN209675056U (en) | A kind of protection type auto-transformer | |
| CN207276197U (en) | A kind of bromine tower tower inner supporting structure | |
| CN207260545U (en) | A kind of convenient construction site scaffold adjusted | |
| CN208920998U (en) | A kind of valley bearing travel measuring instrument | |
| CN207495267U (en) | A kind of fixing device of bearing machining | |
| CN205928639U (en) | All -purpose robot of extension arm with can swing and to stretch | |
| CN212065102U (en) | Succinct ground tectorial membrane device | |
| CN208487604U (en) | A kind of both arms waterproof construction on street lamp | |
| CN108918778A (en) | It is a kind of for building the monitoring device of fugitive dust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |