CN108371375A - Underground coal mine can assist the detection walking stick of walking - Google Patents
Underground coal mine can assist the detection walking stick of walking Download PDFInfo
- Publication number
- CN108371375A CN108371375A CN201810465479.4A CN201810465479A CN108371375A CN 108371375 A CN108371375 A CN 108371375A CN 201810465479 A CN201810465479 A CN 201810465479A CN 108371375 A CN108371375 A CN 108371375A
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- China
- Prior art keywords
- walking
- gas
- walking stick
- portable
- explosion
- 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
- 239000003245 coal Substances 0.000 title claims abstract description 51
- 241001166076 Diapheromera femorata Species 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 101
- 238000004880 explosion Methods 0.000 claims abstract description 47
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005065 mining Methods 0.000 claims abstract description 29
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 7
- 230000007797 corrosion Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 241000253999 Phasmatodea Species 0.000 abstract description 2
- 238000005286 illumination Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B3/00—Sticks combined with other objects
- A45B3/02—Sticks combined with other objects with illuminating devices
- A45B3/04—Sticks combined with other objects with illuminating devices electrical
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B1/00—Sticks with supporting, hanging or carrying means
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B3/00—Sticks combined with other objects
- A45B3/08—Sticks combined with other objects with measuring or weighing appliances
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B9/02—Handles or heads
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the detection walking sticks that a kind of underground coal mine can assist walking, including skid resistant course, mining thermometer, anti-explosion LED mine lamp and portable gas explosion gas detecting instrument, it is provided with footmuff above the skid resistant course, and Glan connector is installed above footmuff, it is provided with walking stick above the Glan connector, it is provided with corrosion-resistant coating on the outside of the walking stick, air exhaust nozzle is installed above the mining thermometer, and mining thermometer is located at the inside of walking stick, handle is installed above the anti-explosion LED mine lamp, it is provided with portable hydrogen sulfide gas detector on the right side of the portable gas explosion gas detecting instrument, and portable gas explosion gas detecting instrument is located at the right side of footmuff, it is fixed with support base below the portable hydrogen sulfide gas detector.The features such as underground coal mine can assist the detection walking stick tool of walking that user can be helped to carry out auxiliary walking, be capable of providing and effectively illuminate, can be detected simultaneously to methane gas and stink damp.
Description
Technical field
Coal mine technical field of the present invention, specially a kind of underground coal mine can assist the detection walking stick of walking.
Background technology
Coal mine is the mankind in the region of the mining area exploitation coal resources rich in coal, is generally divided into underground mine and outdoor
Coal mine is typically chosen to underground when coal seam is remote from earth's surface and digs tunnel digging coal, this is underground mine, when coal seam is far from ground
When the distance of table is close, it is typically chosen directly stripping surface soil layer and excavates coal, this is open coal mine, China's overwhelming majority coal mine
Belong to underground mine, coal mine range includes above and below ground and the very big region of related facility, and coal mine is that the mankind are rich in digging
The proportional space excavated when the geological stratification for having coal, generally includes tunnel and face etc., and coal is most important solid combustion
Material, is one kind of kaustobilite, it is the plant in great numbers grown by certain geological epoch, in suitable geological environment,
It is gradually accumulated into thick-layer, and is buried in water-bed or silt, is formed by very long geochronic geochronic natural incoalation,
It is most with producing coal in the stratum in the Carboniferous Period, the Permian Period, Jurassic Period and the Tertiary Period in the world in Various Geolcgical Ages, it is important into
Coal epoch, the phosphorus content of coal are generally 46~97%, brown to black, have dimness to metallic luster, according to degree of coalification
Difference, coal can be divided into peat, four class of lignite, bituminous coal and anthracite, and the detection walking stick of the underground coal mine of present market can not be helped
It helps user to carry out auxiliary walking, keeps the detection operations under coal mine pretty troublesome, the detection walking stick of the underground coal mine of present market is not
It can provide and effectively illuminate simultaneously, user is avoided to increase burden with illuminations, the detection hand of the underground coal mine of present market
Cane can not simultaneously be detected methane gas and stink damp, thus it is proposed that one kind can help user to assist
Walking, is capable of providing and effectively illuminates, the detection for the underground coal mine that can be detected simultaneously to methane gas and stink damp
Walking stick.
Invention content
The purpose of the present invention is to provide the detection walking sticks that a kind of underground coal mine can assist walking, to solve above-mentioned background skill
The detection walking stick of the underground coal mine proposed in art can not help user to carry out auxiliary walking, can not provide simultaneously effectively according to
It is bright, the problem of can not being detected simultaneously to methane gas and stink damp.
To achieve the above object, the present invention provides the following technical solutions：Underground coal mine can assist the detection walking stick of walking, packet
Skid resistant course, mining thermometer, anti-explosion LED mine lamp and portable gas explosion gas detecting instrument are included, is provided with above the skid resistant course
Footmuff, and Glan connector is installed above footmuff, it is provided with walking stick above the Glan connector, is set on the outside of the walking stick
It is equipped with corrosion-resistant coating, air exhaust nozzle is installed, and mining thermometer is located at the inside of walking stick above the mining thermometer, it is described
It is provided with rubber tube on the right side of air exhaust nozzle, and mining negative pressure gas sampler is installed on the right side of rubber tube, the anti-explosion LED mine
Fixed screw is installed, and anti-explosion LED mine lamp is located at the top of air exhaust nozzle, the top peace of the anti-explosion LED mine lamp on the inside of lamp
Equipped with handle, it is provided with portable hydrogen sulfide gas detector on the right side of the portable gas explosion gas detecting instrument, and portable
Methane gas detector is located at the right side of footmuff, and support base is fixed with below the portable hydrogen sulfide gas detector.
Preferably, the top of the skid resistant course is bonded with the bottom of footmuff, and skid resistant course is mutually parallel with footmuff.
Preferably, the footmuff constitutes detachable structure by Glan connector and walking stick, and walking stick is perpendicular to Glan connector
Top.
Preferably, the air exhaust nozzle constitutes transmission structure by rubber tube and mining negative pressure gas sampler, and mining negative
It is circle to press the shape of gas sampler.
Preferably, the angle between the anti-explosion LED mine lamp and walking stick is 90 °, and fixed screw is about anti-explosion LED mine lamp
Center line it is symmetrical.
Preferably, the portable gas explosion gas detecting instrument is mutually parallel with portable hydrogen sulfide gas detector, and just
The length for taking formula hydrogen sulfide gas detector is more than the length of portable gas explosion gas detecting instrument.
Compared with existing technology, the beneficial effects of the invention are as follows：The underground coal mine can assist the detection walking stick of walking to have energy
Enough user is helped to carry out auxiliary walking, be capable of providing and effectively illuminate, methane gas and stink damp can be examined simultaneously
The features such as survey, the device are provided with skid resistant course, footmuff, Glan connector and walking stick, and footmuff can by Glan connector and walking stick composition
Detaching structure, and walking stick, perpendicular to the top of Glan connector, user will wear into footmuff, be provided with below footmuff anti-skidding
Layer, user can be avoided, which to carry out detection in underground coal mine, to be made to skid, and can assist user's walking, the device in underground coal mine
It is provided with corrosion-resistant coating, corrosion-resistant coating, which can avoid detection walking stick from encountering corrosive deposit in underground coal mine, causes device to occur to break
It splits, which is provided with mining thermometer, air exhaust nozzle, rubber tube and mining negative pressure gas sampler, has by air exhaust nozzle acquisition
Malicious pernicious gas provides rubber tube well and deposits into inside mining negative pressure gas sampler, which is provided with anti-explosion LED mine lamp
With fixed screw, angle between anti-explosion LED mine lamp and walking stick is °, and center line pair of the fixed screw about anti-explosion LED mine lamp
Claim, anti-explosion LED mine lamp can carry out illumination work to underground coal mine, avoid user from increasing burden with illuminations, which sets
Be equipped with portable gas explosion gas detecting instrument and portable hydrogen sulfide gas detector, portable gas explosion gas detecting instrument can to watt
This gas is detected, and portable hydrogen sulfide gas detector can be detected hydrogen sulfide gas.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is accessory structure schematic diagram of the present invention；
Fig. 3 is enlarged structure schematic diagram at A of the present invention；
In figure：1, skid resistant course, 2, footmuff, 3, Glan connector, 4, walking stick, 5, corrosion-resistant coating, 6, mining thermometer, 7, air exhaust nozzle,
8, rubber tube, 9, mining negative pressure gas sampler, 10, anti-explosion LED mine lamp, 11, fixed screw, 12, handle, 13, portable watt
This gas detecting instrument, 14, portable hydrogen sulfide gas detector, 15, support base.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：Underground coal mine can assist the detection walking stick of walking, including
Skid resistant course 1, mining thermometer 6, anti-explosion LED mine lamp 10 and portable gas explosion gas detecting instrument 13, the top of skid resistant course 1 are provided with
Footmuff 2, and the top of footmuff 2 is equipped with Glan connector 3, the top of skid resistant course 1 is bonded with the bottom of footmuff 2, and skid resistant course 1 with
Footmuff 2 is mutually parallel, and the lower section of footmuff 2 is provided with skid resistant course 1, and user can be avoided, which to carry out detection in underground coal mine, makes generation beat
It is sliding, user's walking can be assisted in underground coal mine, the top of Glan connector 3 is provided with walking stick 4, footmuff 2 by Glan connector 3 with
Walking stick 4 constitutes detachable structure, and walking stick 4 facilitates user to install and dismantle perpendicular to the top of Glan connector 3, walking stick 4
Outside be provided with corrosion-resistant coating 5, the top of mining thermometer 6 is equipped with air exhaust nozzle 7, and mining thermometer 6 is located at walking stick 4
The right side of inside, air exhaust nozzle 7 is provided with rubber tube 8, and the right side of rubber tube 8 is equipped with mining negative pressure gas sampler 9, pumping
Mouth 7 constitutes transmission structure by rubber tube 8 and mining negative pressure gas sampler 9, and the shape of mining negative pressure gas sampler 9 is
Circle, acquiring toxic and harmful gas offer by air exhaust nozzle 7, rubber tube 8 deposits into inside mining negative pressure gas sampler 9 well,
The inside of anti-explosion LED mine lamp 10 is equipped with fixed screw 11, and anti-explosion LED mine lamp 10 is located at the top of air exhaust nozzle 7, anti-explosion LED
Angle between mine lamp 10 and walking stick 4 is 90 °, and fixed screw 11 is symmetrical about the center line of anti-explosion LED mine lamp 10, explosion-proof
LED mine lamp 10 can carry out illumination work to underground coal mine, avoid user from increasing burden with illuminations, anti-explosion LED mine lamp 10
Top handle 12 is installed, the right side of portable gas explosion gas detecting instrument 13 is provided with portable hydrogen sulfide gas detector
14, and portable gas explosion gas detecting instrument 13 is located at the right side of footmuff 2, portable gas explosion gas detecting instrument 13 and portable vulcanization
Hydrogen detector 14 is mutually parallel, and the length of portable hydrogen sulfide gas detector 14 is more than portable gas explosion gas detection
Model JCB4, JCB4 the portable gas explosion gas detecting instrument of the length of instrument 13, portable gas explosion gas detecting instrument 13 is mainly used
In protection staff life security, detection is exposed to methane in extreme environment（Gas）Data, measurement range 0-4% are fired using catalysis
Burn sensor（It is commonly called as black and white part）, it is quick on the draw, accurately and reliably, instrument uses firm engineering plastics shell and good guarantor
Shield design, can be using such as in the explosive atmosphere of gas dust, instrument small volume and less weight, ultra-high brightness LED charactron
It is still high-visible in dark underground, it is readable go out the data such as gas concentration, time, electricity, if current gas concentration value is super
When going out pre-set limit value, instrument with sound, light warning reminding user, portable gas explosion gas detecting instrument 13 can to methane gas into
Model clh100, the clh100 hydrogen sulfide gas detector of row detection, portable hydrogen sulfide gas detector 14 is a new generation
Intelligent oxygen detection instrument can be detected continuously there are the gas concentration in inflammable, explosive combustible gas mixture environment, be had
Sound-light alarm, voltage shows, undervoltage warning, zero from motion tracking, adjustment, it is easy to use the features such as, clh100 hydrogen sulfide gas
Detector can be detected hydrogen sulfide gas, and the lower section of portable hydrogen sulfide gas detector 14 is fixed with support base
15。
Operation principle：The underground coal mine can assist the process for using of detection walking stick of walking to be, by Glan connector 3 by foot
It being connected between set 2 and walking stick 4, foot is put into footmuff 2 by user when entering underground coal mine, and user makes to grasp handle 12,
Skid resistant course 1, which can avoid user from carrying out detection in underground coal mine, to be made to skid, and when needing to be detected, passes through Glan connector
3, footmuff 2 is disassembled, portable gas explosion gas detecting instrument 13 and portable hydrogen sulfide gas detector 14 are mounted on hand
4 lower section of cane, acquiring toxic and harmful gas offer by air exhaust nozzle 7, rubber tube 8 deposits into mining negative pressure gas sampler 9 well
Portion, anti-explosion LED mine lamp 10 can carry out illumination work to underground coal mine, user is avoided to increase burden with illuminations, portable
Methane gas detector 13 can be detected methane gas, and portable hydrogen sulfide gas detector 14 can be to stink damp
Body is detected.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. underground coal mine can assist the detection walking stick of walking, including skid resistant course（1）, mining thermometer（6）, anti-explosion LED mine lamp
（10）With portable gas explosion gas detecting instrument（13）, it is characterised in that：The skid resistant course（1）Top be provided with footmuff（2）, and
Footmuff（2）Top Glan connector is installed（3）, the Glan connector（3）Top be provided with walking stick（4）, the walking stick（4）
Outside be provided with corrosion-resistant coating（5）, the mining thermometer（6）Top air exhaust nozzle is installed（7）, and mining thermometer
（6）Positioned at walking stick（4）Inside, the air exhaust nozzle（7）Right side be provided with rubber tube（8）, and rubber tube（8）Right side installation
There is mining negative pressure gas sampler（9）, the anti-explosion LED mine lamp（10）Inside fixed screw is installed（11）, and anti-explosion LED
Mine lamp（10）Positioned at air exhaust nozzle（7）Top, the anti-explosion LED mine lamp（10）Top handle is installed（12）, described portable
Formula methane gas detector（13）Right side be provided with portable hydrogen sulfide gas detector（14）, and portable gas explosion gas is examined
Survey instrument（13）Positioned at footmuff（2）Right side, the portable hydrogen sulfide gas detector（14）Lower section be fixed with support base
（15）.
2. underground coal mine according to claim 1 can assist the detection walking stick of walking, it is characterised in that：The skid resistant course
（1）Top and footmuff（2）Bottom fitting, and skid resistant course（1）With footmuff（2）It is mutually parallel.
3. underground coal mine according to claim 1 can assist the detection walking stick of walking, it is characterised in that：The footmuff（2）
Pass through Glan connector（3）With walking stick（4）Constitute detachable structure, and walking stick（4）Perpendicular to Glan connector（3）Top.
4. underground coal mine according to claim 1 can assist the detection walking stick of walking, it is characterised in that：The air exhaust nozzle
（7）Pass through rubber tube（8）With mining negative pressure gas sampler（9）Constitute transmission structure, and mining negative pressure gas sampler（9）'s
Shape is circle.
5. underground coal mine according to claim 1 can assist the detection walking stick of walking, it is characterised in that：The anti-explosion LED
Mine lamp（10）With walking stick（4）Between angle be 90 °, and fixed screw（11）About anti-explosion LED mine lamp（10）Center line pair
Claim.
6. underground coal mine according to claim 1 can assist the detection walking stick of walking, it is characterised in that：Described portable watt
This gas detecting instrument（13）With portable hydrogen sulfide gas detector（14）It is mutually parallel, and portable hydrogen sulfide gas detector
（14）Length be more than portable gas explosion gas detecting instrument（13）Length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810465479.4A CN108371375A (en) | 2018-05-16 | 2018-05-16 | Underground coal mine can assist the detection walking stick of walking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810465479.4A CN108371375A (en) | 2018-05-16 | 2018-05-16 | Underground coal mine can assist the detection walking stick of walking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108371375A true CN108371375A (en) | 2018-08-07 |
Family
ID=63033470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810465479.4A Pending CN108371375A (en) | 2018-05-16 | 2018-05-16 | Underground coal mine can assist the detection walking stick of walking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108371375A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346252Y (en) * | 1998-04-10 | 1999-11-03 | 张伟忠 | Multifunctional geological hammer for mining |
| CN2420885Y (en) * | 2000-03-29 | 2001-02-28 | 李志愚 | Gas alarm walking stick for mine |
| US20070277863A1 (en) * | 2006-06-06 | 2007-12-06 | Gordon Jerry E | Self-standing walking stick with light |
| US20140150293A1 (en) * | 2011-06-17 | 2014-06-05 | David J. Millar | Mine resistant combat boot, blast mitigating |
| CN105298540A (en) * | 2015-11-24 | 2016-02-03 | 华北理工大学 | Multifunctional coal mine safety detection bar and manufacturing method thereof |
| CN205445583U (en) * | 2016-03-21 | 2016-08-10 | 国网福建晋江市供电有限公司 | Portable cable shaft detection instrument |
-
2018
- 2018-05-16 CN CN201810465479.4A patent/CN108371375A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2346252Y (en) * | 1998-04-10 | 1999-11-03 | 张伟忠 | Multifunctional geological hammer for mining |
| CN2420885Y (en) * | 2000-03-29 | 2001-02-28 | 李志愚 | Gas alarm walking stick for mine |
| US20070277863A1 (en) * | 2006-06-06 | 2007-12-06 | Gordon Jerry E | Self-standing walking stick with light |
| US20140150293A1 (en) * | 2011-06-17 | 2014-06-05 | David J. Millar | Mine resistant combat boot, blast mitigating |
| CN105298540A (en) * | 2015-11-24 | 2016-02-03 | 华北理工大学 | Multifunctional coal mine safety detection bar and manufacturing method thereof |
| CN205445583U (en) * | 2016-03-21 | 2016-08-10 | 国网福建晋江市供电有限公司 | Portable cable shaft detection instrument |
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| PB01 | Publication | ||
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Application publication date: 20180807 |