US20140349562A1 - Change Over Station and Method - Google Patents
Change Over Station and Method Download PDFInfo
- Publication number
- US20140349562A1 US20140349562A1 US14/276,699 US201414276699A US2014349562A1 US 20140349562 A1 US20140349562 A1 US 20140349562A1 US 201414276699 A US201414276699 A US 201414276699A US 2014349562 A1 US2014349562 A1 US 2014349562A1
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- US
- United States
- Prior art keywords
- chamber
- door
- cos
- flow
- plumbing
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009428 plumbing Methods 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 231100001261 hazardous Toxicity 0.000 claims abstract description 4
- 239000000356 contaminant Substances 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 23
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D11/00—Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
- E21F1/085—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators using compressed gas injectors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/04—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against air-raid or other war-like actions
- E04H9/10—Independent shelters; Arrangement of independent splinter-proof walls
- E04H9/12—Independent shelters; Arrangement of independent splinter-proof walls entirely underneath the level of the ground, e.g. air-raid galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/14—Air partitions; Air locks
- E21F1/145—Air locks
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
Definitions
- the present invention is related to a change over station in which miners enter to escape the mine environment and access supplies.
- references to the “present invention” or “invention” relate to exemplary embodiments and not necessarily to every embodiment encompassed by the appended claims.
- the present invention is related to a change over station in which miners enter to escape the mine environment and access supplies while in a chamber of a steel housing that is maintained with positive pressure from pressurized air to keep the mine environment out of the chamber.
- Miners carry on themselves SCSRs/SCBAs that have a minimal amount of oxygen. In case of an emergency, miners will put these SCSRs/SCBAs on to breathe fresh oxygen. In case miners are far from the mine face, they have stations that store SCSR's/SCBA's. These stations do not allow for the miners to escape the mine environment to change their used SCSRs/SCBAs. There is a need to provide protection to miners from the mine environment while they change their SCSRs/SCBAs, and possibly regroup to figure out a way to save themselves, whether it be to identify a path to escape from the mine or to access and deploy a refuge shelter in the mine if there is no viable path to escape the mine.
- the main purpose of the COS is the storage of SCSR's and/or SCBA's. Also, to provide miners a clean environment to change out their SCSR's/SCBA's. This is NOT intended to be a REFUGE CHAMBER and is not a refuge chamber as defined by 30 Code of Federal Regulations Part 7 (30 CFR Part 7).
- the present invention pertains to a change over station (COS) for persons in a hazardous environment.
- the COS comprises a steel housing having only a single door, a chamber, and an air lock portion. The door opening to the air lock portion. The air lock portion connected to the chamber.
- the COS comprises a first elongate seat disposed in the chamber.
- the COS comprises a plurality of compressed gas cylinders, such as air, cylinders, disposed in the seat.
- the COS comprises plumbing connected to the air cylinders formed of gas lines, such as air lines 28 , and valves and an exhaust muffler, including a first gas, such as air path through the lines that provides a continuous flow of air into the chamber through the muffler at a rate of greater than 4 cfm when the plumbing is in an on state, a second gas, such as air, path through the lines that provides a continuous flow of air into the chamber through the muffler at a rate of less than 1.5 cfm when the plumbing is in a standby state, and a third gas, such as air, path through the lines which is door activated when the door is opened by a door activated switch which provides additional air flow as long as the door is open at a rate of greater than 4 cfm into the chamber through the .
- a first gas such as air path through the lines that provides a continuous flow of air into the chamber through the muffler at a rate of greater than 4 cfm when the plumbing is in an on state
- the COS comprises a valve control panel through which the plumbing extends and which is disposed on the outside of the housing which controls whether the plumbing is in the on state or the standby s.
- the COS comprises a storage portion 44 disposed in the housing having supplies, including water and SCSRs or SCBAs.
- the present invention pertains to a method for providing a protected environment to miners from a mine environment in a mine.
- the method comprises the steps of opening a primary valve disposed in a control panel located on the outside of a steel housing of a change over station (COS) to an on state which causes compressed air from compressed air cylinders inside the housing to flow through a first flow path of plumbing in the steel housing into the chamber of the housing and create positive pressure in the chamber relative to the mine environment.
- COS change over station
- step of opening a door of the housing which activates a door activated switch that causes compressed air from the compressed air cylinders to flow through a third flow path of the plumbing into the chamber of the housing and add to the flow through the first flow path of compressed air into the chamber to increase the positive pressure in the chamber and to direct air flow out of the chamber and through the open door.
- step of miners entering the chamber through the door the miners taking SCSRs or SCBAs from a storage portion 44 in the housing and the miners using the SCSRs or SCBAs.
- step of closing the door of the housing which deactivates the door activated switch stopping compressed air flow through the third flow path.
- step of turning the primary valve to a standby state which causes the compressed air from the compressed air cylinders to flow through a second flow path of the plumbing into the chamber and a flow rate that is less than the rate of flow of compressed air through the first flow path.
- FIG. 1 is a plumbing schematic of a first embodiment of the present invention.
- FIG. 2 is a second schematic of the plumbing of the present invention.
- FIGS. 3 a, 3 b and 3 c show the top, side and front views, respectively, of the supply air control panel of the second embodiment of the present invention.
- FIGS. 4-8 are left front perspective, right front perspective, right front perspective, overhead, and right front perspective views, respectively, of the change over station of the present invention.
- FIG. 9 shows a portion of the door, door frame, and door activated switch.
- the COS 10 comprises a steel housing 12 having only a single door 14 , a chamber 16 , and an air lock portion 20 .
- the door 14 opening to the air lock portion 20 .
- the air lock portion 20 connected to the chamber 16 .
- the COS 10 comprises a first elongate seat 24 disposed in the chamber 16 .
- the COS 10 comprises a plurality of compressed air cylinders 22 disposed in the seat, as shown in FIG. 7 .
- the COS 10 comprises plumbing 26 , as shown in FIG.
- the plumbing 26 includes a first air path 34 through the lines that provides a continuous flow or air into the chamber 16 through the muffler 32 at a rate of greater than 4 cfm when the plumbing 26 is in an on state, a second air path 36 through the lines that provides a continuous flow of air into the chamber 16 through the muffler 32 at a rate of less than 1 .
- the COS 10 comprises a valve control panel 42 , as shown in FIG. 3 a, through which the plumbing 26 extends and which is disposed on the outside of the housing 12 which controls whether the plumbing 26 is in the on state or the standby state.
- the COS 10 comprises a storage portion 44 disposed in the housing 12 having supplies, including water and SCSRs or SCBAs 18 .
- the plumbing 26 may include a primary valve 46 that controls whether air from the air cylinders 22 follows the first path or the second path.
- the primary valve 46 may be a 3 way valve 48 , Off, On, and Standby:
- Standby-chamber is activated with a trickle purge to keep the chamber clear of harmful gas after a first entry until a subsequent group arrives at the COS 10 .
- the plumbing 26 through the first path and the second path may create positive pressure to keep contaminants out when the door 14 is open.
- the door activated switch 40 at the door 14 may activate a secondary valve 50 , such as a door activated valve, of the plumbing 26 that increases air flow rate into the chamber 16 and blows air out the open door 14 .
- the chamber 16 may have a net height of 60′′ and the housing 12 has a flat top 52 to maximize interior head room.
- the seat height may be about 16′′ to allow for a 6′ person to sit upright in the chamber 16 .
- the housing 12 may be approximately 12′ long and narrow enough that it fits in a shipping container; 3 units in a 40′ container.
- the COS 10 may handle 3 sequenced 10 man change over for a total of 10 men.
- the COS 10 may include a second elongate seat 54 , as shown in FIG. 4 , and wherein each seat provides 24′′of space per man, and the seats provide air cylinder storage for up to 8 cylinders 22 is available.
- the storage portion 44 may serve as storage for 30 SCSRs 18 as well as 90 quarts of water.
- the plumbing 26 may include an orifice 56 and compressed air flow control 58 would be facilitated via the orifice 56 .
- the space under the seats may allow for up to 8 cylinders 22 or a maximum of 4 hours in the ON mode, the standby mode substantially extends the reserve time by only releasing a trickle flow to maintain a slight positive pressure.
- the storage portion 44 of the water and SCSRs 18 are left and right just inside the door 14 for easy access.
- the COS 10 may include hanging plastic curtain strips 60 to help isolate the COS 10 atmosphere from the mine.
- the control panel may be recessed to prevent damage and may be provided with a tamper evident seal 62 .
- the present invention pertains to a method for providing a protected environment to miners from a mine environment in a mine.
- the method comprises the steps of opening a primary valve 46 disposed in a control panel 42 located on the outside of a steel housing 12 of a change over station (COS) 10 to an on state which causes compressed air from compressed air cylinders 22 inside the housing 12 to flow through a first flow path of plumbing 26 in the steel housing 12 into the chamber 16 of the housing 12 and create positive pressure in the chamber 16 relative to the mine environment.
- COS change over station
- a door 14 of the housing 12 which activates a door activated switch 40 that causes compressed air from the compressed air cylinders 22 to flow through a third flow path of the plumbing 26 into the chamber 16 of the housing 12 and add to the flow through the first flow path of compressed air into the chamber 16 to increase the positive pressure in the chamber 16 and to direct air flow out of the chamber 16 and through the open door 14 .
- miners entering the chamber 16 through the door 14 , the miners taking SCSRs or SCBAs 18 from a storage portion 44 in the housing 12 and the miners using the SCSRs or SCBAs 18 .
- There is the step of closing the door 14 of the housing 12 which deactivates the door activated switch 40 stopping compressed air flow through the third air path 38 .
- the miners may utilize communication devices they typically carry on them with the Commtrac system available from Strata Products Worldwide, and/or the Through the Earth Communication System also available from Strata Products Worldwide and described in U.S. patent application Ser. No. 13/743,947, incorporated by reference herein. There may be the steps of the miners leaving the COS 10 and going to a refuge shelter and entering the refuge shelter.
- the change over station (COS) 10 provides miners an escape from the mine environment, which will allow the miners to safely change their used SCSRs/SCBAs 18 to new ones and have time to possibly regroup and plan a response to the emergency in a relatively safe environment out of the mine environment.
- the change over station 10 is a walk in steel chamber 16 that will have the capacity to store at least 30 SCSRs 18 or 30 SCBSs 18 .
- the change over station 10 will also have the capability to store up to 90 quarts of water for the miners to re-hydrate themselves.
- the change over station 10 has the capability to handle 3 sequenced 10 men change overs for a total of 30 people. To create a clean environment, compressed air will be released inside the chamber 16 of the COS, which will create a positive pressure inside the chamber 16 and allow breathable air inside the chamber 16 . According to calculations 1-4.5K bottle of compressed air will allow 10 men to exist an hour in the chamber 16 . This will be increased to two cylinders 22 as a safety factor.
- the change over station 10 has the capacity to store 8-4.5K compressed air cylinders 22 , to make the overall run time of the chamber 16 when activated last approximately 4 hours.
- a refuge shelter that provides long term life support, typically at least 96 hours.
- An example of a refuge shelter is that sold by Strata Products Worldwide, LLC identified as the Fresh Air Bay; see U.S. patent application Ser. No. 13/460252, incorporated by reference herein.
- FIGS. 4-8 show different views of the change over station 10 with the roof removed for better depiction.
- FIG. 5 shows a front perspective view of the change over station 10 with the single door 14 shut. The door 14 opens outward from the steel chamber 16 .
- FIGS. 4 and 6 show a front perspective view of the change over station 10 with the door 14 open.
- FIG. 7 shows an overhead view of the change over station 10 .
- the steel housing 12 is of a fixed size and is comprised of four walls, the base from which the four walls extend and a roof.
- the bench seats are on either side of the change over station 10 . A portion of the top of the bench is cut away on each side to reveal the pressurized tanks stored within the benches.
- FIG. 8 shows a perspective view of the change over station 10 with the roof 63 in place.
- FIG. 6 shows a left perspective view of the change over station 10 with the door 14 open and showing the shelving 66 and storage areas 44 in the front of the change over station 10 .
- the pressure relief valve 92 In the upper front right corner looking from the outside toward the front door 14 is the pressure relief valve 92 .
- the air lock 20 is separated from the main part of the chamber 16 where the benches are located by plastic strips 60 that hang from the ceiling which act to contain flow of the mine environment into the change over station 10 when the door 14 is open.
- the structure of the change over station 10 is built out of steel tubing and sheet metal having a rectangular shape with the walls, floor and roof being rectangular shaped plates that are welded together.
- the overall dimensions of the structure are 144 in ⁇ 80 in ⁇ 60 in (L ⁇ W ⁇ H).
- the structure of the change over station 10 is built on the same base as the ERC sold by Strata Safety Products, the difference is the height of the COS being at a maximum of 5 ft. The height is to fit inside coal mines.
- each of 2-8 4.5 k compressed air cylinders 22 are connected in parallel through each cylinder's Monet valve 64 to a pressurized gas line.
- the gas line carrying the compressed air from the air cylinders 22 connects to a system valve 68 .
- the system valve 68 controls the airflow through the gas line from the air cylinders 22 in total, either on or off.
- the system valve 68 is off during construction, but once construction is complete and the air cylinders 22 are connected to the gas line and the change over station 10 is ready for operation and to be delivered to a mine, the system valve 68 is turned on and pressurized gas is allowed to flow through the system valve 68 . This is an always on system.
- a bottle pressure gauge is connected to the line between the cylinders 22 and the system valve 68 for verification purposes each working shift.
- the gas line extends from the system valve 68 , a Parker Veriflo HCV Valve with HP Gauge, to a step down valve 70 , a Parker Veriflo Two Stage Pressure Regulator IR 6004 Outlet Range 10-250 PSIG, which takes the 4.5 k PSI pressure in the line down to a workable pressure of about 100 PSI for downstream valves 30 .
- the gas line extends from the step down valve 70 where it splits and extends to a door activated switch 40 , such as a Parker Veriflo Door Activated 2 Position 3 Way Directional Valve P/N 47000074, and door activated valve, such as a Parker Veriflo NV17 AOP Valve, and the primary valve 46 , such as a three way valve 48 or a position valve 48 , Parker Veriflo NV17 Indicator Valve, which can either be off, on or in standby.
- a door activated switch 40 such as a Parker Veriflo Door Activated 2 Position 3 Way Directional Valve P/N 47000074
- door activated valve such as a Parker Veriflo NV17 AOP Valve
- the primary valve 46 such as a three way valve 48 or a position valve 48 , Parker Veriflo NV17 Indicator Valve, which can either be off, on or in standby.
- the position valve 48 is maintained in an off position until miners need to use the change over station 10 . In the off position, the position valve 48 prevents any flow of pressurized air through it. When miners need to use the change over station 10 , they cause the position valve 48 to be turned to the on position.
- the position valve 48 is controlled from the outside of the change over station 10 , before the miners enter the change over station 10 . In the on position, flow of pressurized air flows through the position valve 48 and a 6.48 CFM orifice 56 and out into the chamber of the change over station 10 through the gas line that extends to a muffler 32 exhaust, such as a Parker Veriflo Muffler P/N 47000075, located in the rear of the chamber.
- the gas line also extends to a door activated valve through a door activated switch 40 .
- the door activated valve allows pressurized air to merge with the air from the position valve 48 and pass into the chamber through the muffler 32 exhaust.
- the door activated switch 40 is open, the pressurized gas passes through the switch 40 and through the door activated valve to a 6.48 CFM orifice 56 in the gas line extending from the door activated valve to the muffler 32 exhaust.
- the door activated switch 40 is just that; whenever the door 14 is open any amount, the door activated switch 40 is open and allows gas pressure to pass through the gas line to the door activated valve and into the chamber through the muffler 32 exhaust.
- the position valve 48 is also open, then essentially the gas through the gas line of the door activated valve doubles the flow rate of air into the chamber.
- the door activated valve opens when air passes to it from the switch 40 but prevents air flow in the opposite direct in from the muffler 32 back to the switch 40 . In this way, whenever the door 14 is open to any degree, increased airflow is applied to the chamber to maintain positive pressure and keep out the mine environment.
- the door activated switch 40 has a button 80 that is positioned in the door frame 82 at the hinge 86 side of the door 14 , as shown in FIG. 9 .
- the button 80 is spring loaded so that when the door 14 becomes even slightly ajar, and a space is created between the door 14 and the frame, the button 80 will move out under the action of the spring 84 , drawing a stem 88 of the button 80 which extends into a flow channel 90 through the switch 40 , out of the flow channel 90 , allowing air to flow through the flow channel 90 in the switch 40 and to the door activated valve 50 .
- the air then flows through the door activated valve 50 and through the line to the exhaust muffler 32 .
- the door 14 When the door 14 becomes closed, the door 14 pushes down on the button 80 , directing the stem 88 back into the flow channel 90 , which closes the switch 40 and stops air flow to the door operated valve.
- the 6.48 CFM orifice 56 downstream from the door activated valve allows air flow at 6.48 cfm from the door activated switch 40 to the muffler 32 .
- a pressure relief valve 92 is located in the upper right rear corner of the steel chamber 16 to allow any excess air pressure to vent from the chamber, if necessary, as shown in FIG. 4 .
- the positive pressure maintained in the change over station 10 and constant flow of air into the chamber 16 effectively pushes out or keeps out toxic gases such as carbon dioxide while the miners are in the change over station, which is less than an hour or two hours, long enough for the miners to resupply themselves, have a short rest and make a determination where they will go next in the mine.
- FIG. 2 shows a plumbing schematic and FIGS. 3 a , 3 and 3 c show an overhead view, side view and front view, respectively, of the control panel 42 .
- This schematic of the plumbing layout is slightly different then the layout of FIG. 1 and essentially operates the same way except as follows. From the plumbing schematic, the air flow from the cylinders 22 will go to the system valve 68 , a Parker Veriflo HCV Valve with HP Gauge. The flow stops there until that valve 68 is turned on. What that means is that this is an always off system until the initial valve 68 is turned on. Once, the valve 68 is turned on, the flow then can take two directions.
- the Parker Veriflo Door Activated Switch 40 will be activated and the flow of air will also be directed through the switch 40 to the Parker Veriflo NV17 AOP Secondary Valve 50 and through a 6.48 CFM orifice 56 to join the flow of air flowing through the Parker Veriflo NV17 Indicator Primary Valve 46 and exhaust at a total flow rate of about 13 cfm.
- the switch 40 and the AOP Secondary Valve 50 work the same way as the switch 40 and door activated valve described above.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/276,699 US20140349562A1 (en) | 2013-05-24 | 2014-05-13 | Change Over Station and Method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201361827348P | 2013-05-24 | 2013-05-24 | |
US14/276,699 US20140349562A1 (en) | 2013-05-24 | 2014-05-13 | Change Over Station and Method |
Publications (1)
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US20140349562A1 true US20140349562A1 (en) | 2014-11-27 |
Family
ID=51177340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/276,699 Abandoned US20140349562A1 (en) | 2013-05-24 | 2014-05-13 | Change Over Station and Method |
Country Status (10)
Country | Link |
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US (1) | US20140349562A1 (ru) |
CN (1) | CN104314611A (ru) |
AU (1) | AU2014202600B2 (ru) |
CA (1) | CA2852095C (ru) |
CL (1) | CL2014001319A1 (ru) |
GB (1) | GB2516544A (ru) |
MX (1) | MX2014005792A (ru) |
PL (1) | PL408312A1 (ru) |
RU (1) | RU2014120483A (ru) |
ZA (1) | ZA201403668B (ru) |
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CN106311694B (zh) * | 2016-11-07 | 2018-11-23 | 无锡艾科瑞思产品设计与研究有限公司 | 一种具有防止水蒸气进入的装置的洗瓶机 |
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CN202325645U (zh) * | 2011-11-21 | 2012-07-11 | 山东坚龙特种不锈钢股份有限公司 | 无源矿井紧急避险设备 |
CN102536311A (zh) * | 2012-03-08 | 2012-07-04 | 黑龙江龙煤卓异救援装备科技有限公司 | 矿用应急补给站 |
CN202560305U (zh) * | 2012-03-08 | 2012-11-28 | 黑龙江龙煤卓异救援装备科技有限公司 | 矿用应急补给站 |
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CN202914129U (zh) * | 2012-11-05 | 2013-05-01 | 煤炭科学研究总院 | 一种金属矿井避灾硐室系统 |
CN102943688A (zh) * | 2012-11-27 | 2013-02-27 | 中船重工(西安)东仪矿用安全装备有限公司 | 一种救生舱气幕隔离系统 |
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- 2014-05-13 US US14/276,699 patent/US20140349562A1/en not_active Abandoned
- 2014-05-13 MX MX2014005792A patent/MX2014005792A/es unknown
- 2014-05-13 AU AU2014202600A patent/AU2014202600B2/en active Active
- 2014-05-19 ZA ZA2014/03668A patent/ZA201403668B/en unknown
- 2014-05-20 RU RU2014120483/12A patent/RU2014120483A/ru not_active Application Discontinuation
- 2014-05-20 CL CL2014001319A patent/CL2014001319A1/es unknown
- 2014-05-22 CA CA2852095A patent/CA2852095C/en active Active
- 2014-05-23 PL PL408312A patent/PL408312A1/pl unknown
- 2014-05-23 GB GB1409185.4A patent/GB2516544A/en not_active Withdrawn
- 2014-05-23 CN CN201410221146.9A patent/CN104314611A/zh active Pending
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Also Published As
Publication number | Publication date |
---|---|
CN104314611A (zh) | 2015-01-28 |
CA2852095A1 (en) | 2014-11-24 |
CA2852095C (en) | 2016-04-26 |
GB201409185D0 (en) | 2014-07-09 |
MX2014005792A (es) | 2014-11-24 |
RU2014120483A (ru) | 2015-11-27 |
GB2516544A (en) | 2015-01-28 |
ZA201403668B (en) | 2016-08-31 |
AU2014202600A1 (en) | 2014-12-11 |
CL2014001319A1 (es) | 2014-11-28 |
PL408312A1 (pl) | 2014-12-08 |
AU2014202600B2 (en) | 2015-12-17 |
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