CN108413820A - A kind of electromagnetic centrifugal double control priming device - Google Patents
A kind of electromagnetic centrifugal double control priming device Download PDFInfo
- Publication number
- CN108413820A CN108413820A CN201810443218.2A CN201810443218A CN108413820A CN 108413820 A CN108413820 A CN 108413820A CN 201810443218 A CN201810443218 A CN 201810443218A CN 108413820 A CN108413820 A CN 108413820A
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- shell
- transmission part
- detonation
- spiral shell
- electric cap
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
- F42C15/26—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means using centrifugal force
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
- F42C15/21—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin using spring action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/40—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnets (AREA)
Abstract
A kind of electromagnetic centrifugal double control priming device, belongs to detonating technique field.The present invention includes electromagnetism promotional implement, cantilever beam, detonation transmission part, electric cap, detonation component, ontology, steel ball, ball stud, driving spring, small pressure spiral shell, pressure spiral shell, big pressure spiral shell and axis pin.Usually detonation transmission part is locked in the position far from electric cap by electromagnetism promotional implement and cantilever beam, and will not detonate detonation transmission part electric cap accidental action；After cantilever beam experiences the movement of centrifugation overload in place, release the locking to detonation transmission part, detonation transmission part is pushed to electric cap to positive status by electromagnetism promotional implement energization action again, and original place pushes ball stud that detonation transmission part is locked in state in place in the driving spring of compressive state.The present invention has many advantages, such as locking, safe, reliable effect in place.
Description
Technical field
The invention belongs to detonating technique field, more particularly to a kind of electromagnetic centrifugal double control priming device.
Background technology
Current priming device generally use propellant actuated device, electromagnetic actuator or motor etc. are used as constraint mechanism, to rising
Quick-fried device carries out safety control, and after receiving the constraint relief instruction that control system is sent, above-mentioned actuator, which is powered, to be converted, solution
Except the constraint to detonation transmission part.Control system is required to using aforesaid way to send instructions, once control system sends out false command,
It will cause serious consequence.
Invention content
For the disadvantages described above or Improvement requirement of the prior art, the present invention provides a kind of electromagnetic centrifugal double control detonation dress
It sets, which mainly utilizes control system and environment item using electromagnetism promotional implement and cantilever beam as constraint mechanism
Part dual factors carry out constraint mechanism releasing, and detonation transmission part is locked in the position far from electric cap by constraint mechanism, even if electric cap
Accidental action will not detonate detonation transmission part, while the present invention also has many advantages, such as locking, safe, reliable effect in place.
The present invention a kind of electromagnetic centrifugal double control priming device, which is characterized in that including electromagnetism promotional implement, cantilever beam,
Axis pin, detonation transmission part, electric cap, detonation component, ontology and steel ball；
The electromagnetism promotional implement is made of armature, yoke, tension spring, solenoid component, sleeve and shell, and armature is one step-like
Cylinder is made of big cylinder and small column, and big cylinder one end has tapped blind hole, to one end of fixed tension spring, big cylinder
The other end be inclined-plane, the angle of the central axes of the inclined-plane and armature is 30 °, and one end of small column has screw thread, to connect
Detonation transmission part, yoke are a stepped cylindrical body, the inner hollow of yoke, and one end has bellmouth, the bellmouth and yoke
The angle of central axes is 30 °, and solenoid component is made of coil holder and circle enameled wire, and circle enameled wire is on coil holder, coil holder material
For non-magnetic metal material, after one end of coil holder has cable hole, conducting wire to be connect with circle enameled wire, pass through the cabling of coil holder one end
Hole is drawn, and sleeve is a stepped cylindrical body, and there are step-like big hole and threaded apertures, tension spring to be placed in sleeve for inside, locate
It is free state in the tension spring in step-like big hole, the tension spring in threaded apertures can be in external force amoeboid movement as constraint
State, the armature, yoke and shell are all made of electromagnetic pure iron material；Sleeve is non-magnet material, and solenoid component is sleeved on shell
Between body and yoke, when the electromagnetic force between armature and yoke is more than the drag of tension spring, yoke adsorbs armature motion；
Described cantilever beam one end be " L " shape structure, the arm of cantilever beam is longer, since the arm of force is longer, convenient for bottom end by compared with
When small power, that is, it is deformable, the other end of cantilever beam has aperture, to be nested on axis pin, the material of cantilever beam be deformation compared with
Good beryllium-bronze；
The detonation transmission part is made of shell, booster gains, flame proof block and paper washer, and wherein shell is a stepped cylindrical
There is blind hole, booster gains to be placed in the blind hole for body, one end, have a circle uniform around the corresponding upper outer circumference of the blind hole of shell
The circular groove of distribution, the setting of circular groove reduce the intensity of shell, when ensure that detonation transmission part movement in place, electric thunder
Pipe reliably breaks through the obstruction of shell, and detonate booster gains, and there is blind via bottom chamfering, the middle part of shell to have trapezoidal groove, should
The angle that lower inclined plane forms on trapezoidal groove is 90 °~150 °, so set, ensureing that steel ball reliably releases the lock to detonation transmission part
Fixed, the other end of shell has threaded hole, and by being rolled to tube shell bottom chamfering, booster gains, paper washer and flame proof block are encapsulated
In shell, detonation transmission part is fixed on by the threaded hole on shell on electromagnetism promotional implement, and the setting of paper washer ensure that booster explosive
Column is compacted, the setting of flame proof block, when ensure that detonation transmission part is locked, even if electric cap accidental action, due to flame proof block
In the presence of electric cap will not ignite booster gains；
The electric cap is placed in the corresponding aperture of ontology, electric cap far from detonation component, the output end face of electric cap every
Quick-fried piece, even if electric cap accidental action, due to the presence of flame proof block, flame proof block can decline the output detonation power of electric cap
Subtract, electric cap will not detonate booster gains and detonation component, when detonation transmission part movement in place after, electric cap face booster gains
Position, booster gains face primary explosive column can detonate booster gains after electric cap effect at this time, and booster gains detonates detonation in turn
Powder column；
The detonation component is made of primary explosive column, medicine seat and protection pad, and protection pad is the aluminium foil of 0.3mm~0.5mm thickness, gluing
It is attached on medicine seat, the big cylindrical section in medicine seat outer end has screw thread, will detonate component fixation on the body by the screw thread.
Further, a kind of electromagnetic centrifugal double control priming device also have ball stud, driving spring, small pressure spiral shell,
Spiral shell and big pressure spiral shell, ball stud, driving spring and small pressure spiral shell is pressed to constitute locking mechanism, when electromagnetism pin removal and cantilever beam successively act on
Afterwards, in positive status, the driving spring driving ball stud for being now in compressive state will for electric cap, detonation transmission part and detonation component
Detonation transmission part is locked in state in place, and pressure spiral shell, big pressure spiral shell and axis pin are respectively to fixed electric cap, electromagnetism promotional implement and cantilever
Beam, pressure spiral shell and big press all have through-hole in the middle part of spiral shell, the lead-out wire of electric cap and electromagnetism promotional implement is drawn from the through-hole of each pressure spiral shell.
Further, a diameter of 0.2mm~0.4mm of circle enameled wire of the electromagnetism promotional implement, the stroke of electromagnetism promotional implement
For 3mm~3.5mm.
Further, the stroke of a diameter of 0.3mm of circle enameled wire of the electromagnetism promotional implement, electromagnetism promotional implement are 3.5mm.
Such setting is because electromagnetism promotional implement will drive detonation transmission part, in order to ensure reset condition (electric cap and flame proof
Block is to just, the state of detonation transmission part and detonation component sequence) when, it will not ignite propagation of explosion portion electric cap accidental action
Part, inevitable requirement detonation transmission part farther out, require the stroke of electromagnetism promotional implement larger accordingly apart from electric cap, while to ensure to pass
Quick-fried component reliable movement in place, electromagnetism promotional implement to overcome detonation transmission part and ontology corresponding aperture frictional force and ball stud and
The hindering factors such as the normal pressure that driving spring forms detonation transmission part, the driving force of inevitable requirement electromagnetism promotional implement is larger, therefore circle
Enameled wire accordingly selects larger line footpath.
Working principle of the present invention is as follows：
Usually, detonation transmission part is locked in the reset condition far from electric cap by cantilever beam and electromagnetism promotional implement, even if electric thunder
Pipe accidental action will not ignite detonation transmission part.
When mechanism experiences centrifugation overload, cantilever beam overcomes the drag of itself to move in place, releases to detonation transmission part
Constraint, then be powered to electromagnetism promotional implement, electromagnetism promotional implement pushes detonation transmission part to move to booster gains with electric cap to just
State, at the same time, driving spring push ball stud detonation transmission part is locked in state in place, even if electromagnetism promotional implement power off,
Detonation transmission part will not return to reset condition, and after electric cap is connected to firing command again, detonation transmission part is ignited in electric cap effect,
Detonation transmission part and then ignition detonation component.
Beneficial effects of the present invention are embodied in：
A) the two-stage insurance institution of cantilever beam and electromagnetism promotional implement as detonation transmission part is used, detonation transmission part is locked in far
Position from electric cap, will not detonate detonation transmission part electric cap accidental action, and the action of cantilever beam is overloaded by environment,
The action of the instruction that the action of electromagnetism promotional implement is sent out by control system, Liang Zhong mechanisms relies on different environmental excitations, improves
The safety of entire mechanism；
B) it uses steel ball as transmission mechanism, further decreases friction factor, while the work for improving entire mechanism can
By property；
C) setting of spring and ball stud is driven, it is ensured that detonation transmission part moves in place and can be positively locked in shape in place
State improves the Reliability of Microprocessor of entire mechanism.
Description of the drawings
Fig. 1 is electromagnetic centrifugal double control priming device original state figure of the present invention；
Fig. 2 is electromagnetic centrifugal double control priming device state diagram in place of the present invention；
Fig. 3 is the electromagnetism promotional implement original state figure of electromagnetic centrifugal double control priming device of the present invention；
Fig. 4 is the electromagnetism promotional implement state diagram in place of electromagnetic centrifugal double control priming device of the present invention；
Fig. 5 is the detonation transmission part composition figure of electromagnetic centrifugal double control priming device of the present invention；
Fig. 6 is the shell structure figure of electromagnetic centrifugal double control priming device of the present invention；
Fig. 7 is the detonation component composition figure of electromagnetic centrifugal double control priming device of the present invention；
Fig. 8 is the cantilever beam structure figure of electromagnetic centrifugal double control priming device of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing and specific implementation
Example, invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain this hair
It is bright, it is not intended to limit the present invention.In addition, technical characteristic involved in the various embodiments of the present invention described below
It can be combined with each other as long as they do not conflict with each other.
A kind of electromagnetic centrifugal double control priming device better embodiment of the present invention, structure and component relationship such as Fig. 1 and
Shown in Fig. 2, which is characterized in that including electromagnetism promotional implement 1, cantilever beam 2, axis pin 13, detonation transmission part 3, electric cap 4, detonation component
5, ontology 6 and steel ball 7；
The electromagnetism promotional implement 1 is as shown in Figure 3 and Figure 4, by armature 1-1, yoke 1-2, tension spring 1-3, solenoid component 1-4,
Sleeve 1-5 and shell 1-6 compositions, armature 1-1 is a stepped cylindrical body, is made of big cylinder and small column, big cylinder one end
With tapped blind hole, to one end of fixed tension spring 1-3, the other end of big cylinder is inclined-plane, the axis on the inclined-plane and armature 1-1
The angle of line is 30 °, and one end of small column has screw thread, and to connect detonation transmission part 3, yoke 1-2 is a stepped cylindrical body,
The inner hollow of yoke 1-2, one end have bellmouth, and the bellmouth and the angle of the central axes of yoke 1-2 are 30 °, line package
Part 1-4 is made of coil holder and circle enameled wire, and circle enameled wire is on coil holder, and circle enameled wire line footpath is 0.3mm, and coil holder material is
7A09 aluminum materials, after one end of coil holder has cable hole, conducting wire connects with circle enameled wire, by the cable hole extraction of coil holder one end,
Sleeve 1-5 is a stepped cylindrical body, and there are step-like big hole and threaded apertures, tension spring 1-3 to be placed in sleeve 1-5 for inside,
Tension spring 1-3 in step-like big hole is free state, can be with external force amoeboid movement, the tension spring 1- in threaded apertures
3 be restrained condition, and the armature 1-1, yoke 1-2 and shell 1-6 are all made of electromagnetic pure iron DT4C materials；Armature 1-1 and yoke
The relative distance of 1-2 is 3.5mm, and sleeve 1-5 is 7A09 aluminum materials, solenoid component 1-4 be sleeved on shell 1-6 and yoke 1-2 it
Between, after being powered to solenoid component 1-4, the electromagnetic force formed between armature 1-1 and yoke 1-2 is more than the drag of tension spring 1-3, yoke
Iron 1-2 absorption armature 1-1 movements, the original state of electromagnetism promotional implement 1 as shown in Figure 3 at this time move to as shown in Figure 4 arrive
Position state；
The cantilever beam 2 is as shown in figure 8, one end is " L " shape structure, and the other end has aperture, to be nested in axis pin 13
On, the material of cantilever beam 2 is beryllium-bronze；
The detonation transmission part 3 as shown in figure 5, be made of shell 3-1, booster gains 3-2, flame proof block 3-3 and paper washer 3-4,
Wherein shell 3-1 is as shown in fig. 6, be a stepped cylindrical body, there is blind hole 3-1a, booster gains 3-2 to be placed in the blind hole for one end
In 3-1a, there is an equally distributed circular groove 3-1c of circle, blind hole around the corresponding upper outer circumferences of blind hole 3-1a of shell 3-1
There is chamfering 3-1e, the middle part of shell 3-1 there is trapezoidal groove 3-1b, the upper lower inclined planes of trapezoidal groove 3-1b to form for the bottoms 3-1a
Angle be 120 °, the other end of shell 3-1 has threaded hole 3-1d, by being rolled to shell 3-1 bottom chamfers 3-1e, will pass
Quick-fried powder column 3-2, paper washer 3-4 and flame proof block 3-3 are encapsulated in shell 3-1, and detonation transmission part 3 passes through the threaded hole 3- on shell 3-1
1d is fixed on electromagnetism promotional implement 1；
The electric cap 4 is placed in the corresponding aperture of ontology 6, and electric cap 4 is rectified far from detonation component 5, the output of electric cap 4
To flame proof block 3-3；
As shown in fig. 7, being made of primary explosive column 5-1, medicine seat 5-2 and protection pad 5-3, protection pad 5-3 is the detonation component 5
The aluminium foil of 0.5mm thickness, gluing are attached on medicine seat 5-2, and the big cylindrical section in the outer ends medicine seat 5-2 has screw thread, will be risen by the screw thread
Quick-fried component 5 is fixed on ontology 6.
Further, the present embodiment also has ball stud 8, driving spring 9, small pressure spiral shell 10, pressure spiral shell 11 and big pressure spiral shell 12, bulb
Pin 8, driving spring 9 and small pressure spiral shell 10 constitute locking mechanism, and detonation transmission part 3 is locked in state in place, pressure spiral shell 11 and big pressure spiral shell 12
Middle part all have through-hole, pressure spiral shell 11, big pressure spiral shell 12 and axis pin 13 are respectively to fixed electric cap 4, electromagnetism promotional implement 1 and cantilever
Beam 2.
The operation principle of the present embodiment is as follows：
Usually, detonation transmission part 3 is locked in the reset condition far from electric cap 4 by cantilever beam 2 and electromagnetism promotional implement 1, even if
4 accidental action of electric cap, will not ignite detonation transmission part 3.
When mechanism experiences centrifugation overload, cantilever beam 2 overcomes the drag of itself to move in place, releases to detonation transmission part 3
Constraint, then be powered to electromagnetism promotional implement 1, electromagnetism promotional implement 1 pushes detonation transmission part 3 to move to booster gains 3-2 and electricity
Detonator 4 is to positive state, and at the same time, driving spring 9 pushes ball stud 8 that detonation transmission part 3 is locked in state in place, even if electromagnetism
Promotional implement 1 powers off, and detonation transmission part 3 will not return to reset condition, and after electric cap 4 is connected to firing command again, electric cap 4 is made
With ignition detonation transmission part 3, detonation transmission part 3 ignites detonation component 5 in turn.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of electromagnetic centrifugal double control priming device, which is characterized in that including electromagnetism promotional implement (1), cantilever beam (2), axis pin
(13), detonation transmission part (3), electric cap (4), detonation component (5), ontology (6) and steel ball (7)；
The electromagnetism promotional implement (1) is by armature (1-1), yoke (1-2), tension spring (1-3), solenoid component (1-4), sleeve (1-5)
It is formed with shell (1-6), armature (1-1) is a stepped cylindrical body, is made of big cylinder and small column, big cylinder one end has
Tapped blind hole, to one end of fixed tension spring (1-3), the other end of big cylinder is inclined-plane, the axis on the inclined-plane and armature (1-1)
The angle of line is 30 °, and one end of small column has screw thread, and to connect detonation transmission part (3), yoke (1-2) is a step-like circle
Cylinder, the inner hollow of yoke (1-2), one end have bellmouth, and the bellmouth and the angle of the central axes of yoke (1-2) are
30 °, solenoid component (1-4) is made of coil holder and circle enameled wire, and for circle enameled wire on coil holder, coil holder material is non-magnetic
Metal material, after one end of coil holder has cable hole, conducting wire connects with circle enameled wire, the cable hole for passing through coil holder one end is drawn, and is covered
Cylinder (1-5) is a stepped cylindrical body, and there are step-like big hole and threaded apertures, tension spring (1-3) to be placed in sleeve (1-5) for inside
Interior, the tension spring (1-3) in step-like big hole is free state, can be with external force amoeboid movement, in threaded apertures
Tension spring (1-3) is restrained condition, and the armature (1-1), yoke (1-2) and shell (1-6) are all made of electromagnetic pure iron material；Sleeve
(1-5) is non-magnet material, and solenoid component (1-4) is sleeved between shell (1-6) and yoke (1-2), when armature (1-1) and yoke
When electromagnetic force between iron (1-2) is more than the drag of tension spring (1-3), yoke (1-2) adsorbs armature (1-1) and moves；
Described cantilever beam (2) one end is " L " shape structure, and the other end has aperture, to be nested on axis pin (13), cantilever beam
(2) material is beryllium-bronze；
The detonation transmission part (3) is made of shell (3-1), booster gains (3-2), flame proof block (3-3) and paper washer (3-4), wherein
Shell (3-1) is a stepped cylindrical body, and there is blind hole (3-1a), booster gains (3-2) to be placed in the blind hole (3-1a) for one end,
There is an equally distributed circular groove (3-1c) of circle, blind hole around the corresponding upper outer circumference of the blind hole (3-1a) of shell (3-1)
The bottom (3-1a) has a chamfering (3-1e), and the middle part of shell (3-1) has a trapezoidal groove (3-1b), on the trapezoidal groove (3-1b)
The angle of lower inclined plane composition is 90 °~150 °, and the other end of shell (3-1) has threaded hole (3-1d), by shell (3-1)
Bottom chamfer (3-1e) rolls, and booster gains (3-2), paper washer (3-4) and flame proof block (3-3) are encapsulated in shell (3-1), passes
Quick-fried component (3) is fixed on by the threaded hole (3-1d) on shell (3-1) on electromagnetism promotional implement (1)；
The electric cap (4) is placed in the corresponding aperture of ontology (6), electric cap (4) far from detonation component (5), electric cap (4) it is defeated
Outlet face flame proof block (3-3)；
The detonation component (5) is made of primary explosive column (5-1), medicine seat (5-2) and protection pad (5-3), and protection pad (5-3) is 0.3mm
The aluminium foil of~0.5mm thickness, gluing are attached on medicine seat (5-2), and the big cylindrical section in the outer end medicine seat (5-2) has screw thread, passes through the spiral shell
Detonation component (5) is fixed on ontology (6) by line.
2. a kind of electromagnetic centrifugal double control priming device according to claim 1, which is characterized in that also have ball stud
(8), driving spring (9), small pressure spiral shell (10), pressure spiral shell (11) and big pressure spiral shell (12), ball stud (8), driving spring (9) and small pressure spiral shell (10)
Locking mechanism is constituted, detonation transmission part (3) is locked in state in place, is all had in the middle part of pressure spiral shell (11) and big pressure spiral shell (12) logical
Hole, pressure spiral shell (11), greatly pressure spiral shell (12) and axis pin (13) are respectively to fixed electric cap (4), electromagnetism promotional implement (1) and cantilever beam
(2)。
3. a kind of electromagnetic centrifugal double control priming device according to claim 1, it is characterised in that：
A diameter of 0.2mm~the 0.4mm of circle enameled wire of the electromagnetism promotional implement (1), the stroke of electromagnetism promotional implement (1) be 3mm~
3.5mm。
4. a kind of electromagnetic centrifugal double control priming device according to claim 1 or 3, it is characterised in that：
The stroke of a diameter of 0.3mm of circle enameled wire of the electromagnetism promotional implement (1), electromagnetism promotional implement (1) are 3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443218.2A CN108413820A (en) | 2018-05-10 | 2018-05-10 | A kind of electromagnetic centrifugal double control priming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443218.2A CN108413820A (en) | 2018-05-10 | 2018-05-10 | A kind of electromagnetic centrifugal double control priming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108413820A true CN108413820A (en) | 2018-08-17 |
Family
ID=63138656
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|---|---|---|---|
| CN201810443218.2A Withdrawn CN108413820A (en) | 2018-05-10 | 2018-05-10 | A kind of electromagnetic centrifugal double control priming device |
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| Country | Link |
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| CN (1) | CN108413820A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186344A (en) * | 2018-10-30 | 2019-01-11 | 北京理工大学 | A kind of MEMS security system and method that single port diameter is general |
-
2018
- 2018-05-10 CN CN201810443218.2A patent/CN108413820A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186344A (en) * | 2018-10-30 | 2019-01-11 | 北京理工大学 | A kind of MEMS security system and method that single port diameter is general |
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Application publication date: 20180817 |