CN106638384A - Efficient roadblock nail - Google Patents
Efficient roadblock nail Download PDFInfo
- Publication number
- CN106638384A CN106638384A CN201710103200.3A CN201710103200A CN106638384A CN 106638384 A CN106638384 A CN 106638384A CN 201710103200 A CN201710103200 A CN 201710103200A CN 106638384 A CN106638384 A CN 106638384A
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- China
- Prior art keywords
- tire
- piston
- efficient
- nail
- road barricade
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/12—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions for forcibly arresting or disabling vehicles, e.g. spiked mats
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention discloses an efficient roadblock nail. According to the technical scheme, the efficient roadblock nail is characterized in that the efficient roadblock nail is provided with a sharp tip, so that the efficient roadblock nail more rapidly pricks into a tire when being used; at the same time, in order to more rapidly deflate the tire, after the tip of the efficient roadblock nail pricks into the tire, air inside the tire generates pressure to a piston cylinder through an air inlet duct, and then the tip is disengaged from a base body through a first piston rod, so that a larger exhaust channel is formed, air is exhausted from the exhaust channel, and the tire is deflated more rapidly; and meanwhile, a special locking device is arranged, a locking rod abuts against the tire through the sharp portion due to movement of the piston cylinder, then friction force is increased, the efficient roadblock nail is prevented from being disengaged in the tire moving process, and thus the efficient roadblock nail is prevented from fluttering to cause adverse effects. The problem that an existing efficient roadblock nail cannot rapidly prick into the tire or rapidly deflate the tire as the top is not sharp enough is solved.
Description
Technical field
The present invention relates to police equipment field, in particular, it is related to a kind of efficient road barricade nail.
Background technology
Road barricade nail, as a kind of police or military hardware, is to the tire of automobile carry out deflation behaviour under given conditions
Make, so that tire loses tire pressure, the ability to act of particular vehicle is further limited, so as to reach pursue and capture an escaped prisoner runaway convict or restriction
The purpose of enemy's ability to act.
Existing frequently-used road barricade nail, is generally designed to triangular pyramid shape, can so ensure efficient road barricade nail on ground
Stability, more consolidate so as to ensure that efficient road barricade nail can be contacted when being contacted with tire.
Such as a kind of police road barricade nail that patent announcement number is mentioned for the patent of invention of CN103866710A, its technology for adopting
Scheme is:Including body, the body is hollow triangular pyramid, and on each summit of the triangular pyramid vertical steel is both provided with
Nail, the steel nail is hollow structure, and helicla flute, the inside of each steel nail are both provided with the inner and outer wall of the steel nail
All it is interconnected.The police efficient road barricade nail has the beneficial effect that:Simple structure, the steel nail hole being connected using inside can be fast
Speed bleeds off the gas of tire, allows the time that ruffian does not escape, obstructive good, easy to carry, with low cost, it is easy to promote the use of.
However, above-mentioned police road barricade nail is based on for the purpose to the faster deflation of tire, steel nail hole is arranged into hollow
Shape, hollow shape causes the top of steel nail not sharp enough, therefore in actual use, steel nail can not more preferably more rapidly
Penetrate in tire, be unfavorable for more quickly bleeding a tire.Therefore designing a kind of sharp can faster penetrate tire simultaneously
Tire is carried out quickly to deflate and is necessary.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide one kind can quickly be pierced into tire and other energy
The efficient road barricade nail that enough rapid pair-wheel tires are deflated.
For achieving the above object, the invention provides following technical scheme:A kind of efficient road barricade nail, is made using iron and steel,
For deflating to the tire in traveling, including triangular pyramid body, the triangular pyramid is originally provided with vivo cavity, and described three
The venthole connected with the cavity is provided with pyramid body, the summit of the triangular pyramid is provided with what is connected with the cavity
Intercommunicating pore, it is characterised in that:It is vertically connected with each summit of the triangular pyramid body and punctures mechanism, it is described to puncture mechanism's bag
Include the matrix being fixedly connected with the triangular pyramid body, the top of described matrix is connected with the top of cone, described matrix and
The conical shape formed after the top connection, described matrix is referred to as top surface with the top contact surface, in described matrix
Heart position is provided with piston cylinder, and the piston rod interior sealing sliding has piston body, and the piston cylinder is divided into by the piston body
Cylinder and lower cylinder, the upper cylinder half intersects with top surface, and the position near top surface arranges exhaust passage, and the exhaust passage passes through
Intercommunicating pore is connected with the cavity;It is described it is top on be provided with sealing land with the upper cylinder half grafting;The piston body it is upper
Under be connected to First piston bar and second piston bar, wherein the First piston bar be located at upper cylinder half, while with top lower end
Center be fixedly connected, the second piston bar is located in the lower cylinder, and the bottom of the second piston bar is connected with
Locking device;The side of described matrix is evenly arranged with some air inlet ducts, and the air inlet duct is connected with lower cylinder;The locking device
Including the check lock lever being connected with the bottom of the second piston bar, the top of the check lock lever is provided with sharp portion, the locking
Bar can be moved up and down in air inlet duct along the second piston bar, when it is described it is top contact with described matrix when, it is described sharp
Portion is hidden in air inlet duct;Tire is punctured when mechanism is punctured, gas is entered into lower cylinder from recent groove, because upper and lower cylinder has
Pressure reduction, piston body drive is top away from matrix, and the sharp portion stretches out the air inlet duct, in lunging tire;The air inlet duct exists
Thickness of the height on the First piston bar direction less than tire.
By adopting above-mentioned technical proposal, installation four is respectively perpendicular on four summits of triangular pyramid and punctures mechanism, when
When efficiently road barricade nail is placed on the ground, efficient road barricade nail is in a relatively steady state.When running car past tense, wheel
Tire can be contacted and can penetrated in tire with top, due to top in the present invention in cone setting, therefore, it is possible to quickly
Penetrate in the middle of tire, puncturing mechanism can gradually penetrate in the middle of tire, until air inlet duct starts and the air in tire
Contacted, now because the height of air inlet duct is less than the thickness of tire, now air is entered into the middle of piston cylinder, due to air
Pressure so that promote piston body motion, due to piston body be connected to by First piston bar and chuck it is top, therefore it is top together
When setting in motion, therefore it is now top start depart from matrix, due to matrix top surface open after, be provided with upper cylinder half and cavity connect
Logical exhaust passage, now exhaust passage opening, is now exhausted, because exhaust passage can be quick by exhaust passage
It is exhausted therefore, it is possible to more quickly discharge the gas in tire;Because piston body is by the while piston body is moved
Two piston rods drive locking device motion, and in motion process, check lock lever is moved in air inlet duct, so as to stretch out air inlet
Groove, so that check lock lever top has been arrived on tire, preferably can be connected due to being provided with sharp portion on check lock lever with tire, because
This is prevented from tire rotary course efficient road barricade nail and dances in the air and bring bad impact.
The present invention is further arranged to:It is described it is top on be provided with for preventing off working state under it is described top from described
The magnet departed from matrix.
By adopting above-mentioned technical proposal, magnet is set and enables to top to take off from matrix in a non-operative state
From so as to being convenient to use.
The present invention is further arranged to:The projection for increasing friction force is provided with the sharp portion.
By adopting above-mentioned technical proposal, arranging projection further can prevent efficient road barricade nail in wheel by increasing friction force
Fall down in tire rotary course.
The present invention is further arranged to:The projection is raised for point-like or line shape is raised.
By adopting above-mentioned technical proposal, point-like is raised and line shape projection can effective increasing friction force, while manufacture adds
Work is more convenient.
The present invention is further arranged to:The check lock lever is arranged with the second piston bar in 45° angle.
By adopting above-mentioned technical proposal, check lock lever and second piston bar are arranged into the check lock lever that enables at 45 ° and is being stretched
It is oblique while going out to be inserted into tire, further efficient road barricade nail is fixed in tire so as to be not easy to be traveling
In tire get rid of.
The present invention is further arranged to:The cavity is spherical cavity, and matching somebody with somebody for some lead is provided with the cavity
Heavy ball.
By adopting above-mentioned technical proposal, cavity is set to spherical, and some lead is distributed in spherical cavity
Weighted spherical ball, because the weight of weighted spherical ball is larger while weighted spherical ball is located at the lowest point of cavity, therefore the setting of weighted spherical ball can drop
The center of gravity of low efficient road barricade nail, hence in so that efficiently road barricade nail more has stability, effectively enters therefore, it is possible to convenient
Exercise and use.
The present invention is further arranged to:The check lock lever includes the lower beam being connected with the second piston bar, the lower beam
Upper boom is connected with, plug is provided with the upper boom, the jack with the plug grafting is provided with the lower beam, it is described to insert
Hole, is also associated with producing the spring of deformation, the sharp position when plug is pulled out from jack between the plug and jack
In the upper boom relative to jack opposite side.
By adopting above-mentioned technical proposal, check lock lever is divided into lower beam, upper boom, because upper boom is inserted into wheel by sharp portion
In tire, when we need to take out efficient road barricade nail from tire, but upper boom lower beam can be separated still can connected by spring
Connect, when take out matrix and it is top after we just easily can be taken out upper boom by spring using instruments such as pliers, take
Reinstall to after going out in tubulose rod set, remain able to reuse.
In sum, the invention has the advantages that:The present invention can quickly be inserted into use wheel
Quickly deflated in tire and to tire, the efficient road barricade nail have the advantages that it is easy to use, while the efficient road barricade nail
Will not dance in the air from the tire of rotation in use, it is to avoid have undesirable effect;And the efficient road barricade nail is using completing
After can disassemble from tire, reuse.
Description of the drawings
Fig. 1 is embodiment overall structure diagram;
With top structural representation based on Fig. 2;
Fig. 3 is the internal structure schematic diagram for puncturing mechanism;
Fig. 4 is to puncture the internal structure schematic diagram under mechanism's open mode;
Fig. 5 is the internal structure schematic diagram of triangular pyramid body;
Fig. 6 is the structural representation of locking device;
Fig. 7 is the internal structure schematic diagram of locking device;
Fig. 8 is the partial enlarged drawing of A in Fig. 4.
In figure:1st, triangular pyramid body;2nd, cavity;3rd, venthole;4th, intercommunicating pore;5th, matrix;6th, it is top;7th, piston cylinder;71、
Upper cylinder half;72nd, lower cylinder;8th, top surface;9th, First piston bar;10th, piston body;11st, air inlet duct;12nd, second piston bar;13rd, sealing ring
Platform;14th, sharp portion;15th, exhaust passage;16th, magnet;17th, it is raised;171st, point-like is raised;172nd, line shape is raised;18th, weighted spherical ball;
19th, lower beam;20th, upper boom;21st, spring;22nd, plug;23rd, jack.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment:A kind of efficient road barricade nail, is made using iron and steel, for deflating to the tire in traveling, referring to Fig. 1
To Fig. 8 shown in, including triangular pyramid body 1, in triangular pyramid body 1 spherical hollow space 2 is provided with, cavity 2 is set to it is spherical, and
The weighted spherical ball 18 of some lead is distributed in spherical cavity 2, due to the weight of weighted spherical ball 18 it is larger and meanwhile weighted spherical ball 18 be located at sky
The lowest point in chamber 2, therefore the setting of weighted spherical ball 18 can reduce the center of gravity of efficient road barricade nail, hence in so that efficient road barricade nail is more
With stability, effectively used therefore, it is possible to convenient.And it is provided with what is connected with cavity 2 on triangular pyramid body 1
Venthole 3, is discharged the gas in tire by venthole 3.
Each summit of triangular pyramid is provided with the intercommunicating pore 4 connected with cavity 2, hangs down on each summit of triangular pyramid body 1
Direct-connected being connected to punctures mechanism, punctures the matrix 5 that mechanism includes being fixedly connected with triangular pyramid body 1, and the top of matrix 5 is connected with circle
The conical shape formed after top the 6 of taper, matrix 5 and top 6 connection.Complete taper can be formed due to puncturing mechanism
Thus frictional force is less when tire is inserted, can insert faster.
Contact surface of the matrix 5 with top 6 is referred to as top surface 8, and the center of matrix 5 is provided with piston cylinder 7, close in piston cylinder 7
Envelope sliding is connected with piston body 10, and 10 points by piston body of the piston cylinder 7 of piston cylinder 7 is upper cylinder half 71 and cylinder, and upper cylinder half 71 intersects with top surface 8
Positioned at the top of piston body 10.Upper cylinder half 71 is provided with some exhaust passages 15 near the position of top surface 8.Exhaust passage 15 is as schemed institute
Show, exhaust passage 15 bypasses air inlet duct 11 and is not drawn into.Exhaust passage 15 is connected by intercommunicating pore 4 with cavity 2, therefore top 6
Air is quickly discharged from exhaust people having a common goal after being opened.
The sealing land 13 with the grafting of upper cylinder half 71 is provided with top 6, because the presence for sealing land 13 is prevented from top
Point 6 is inserted into after tire, and gas is entered into tire causes top 6 problems that can not be opened in upper cylinder half 71.
Piston body 10 is connected to up and down First piston bar 9 and second piston bar 12, and wherein First piston bar 9 is located at
Upper cylinder half 71, while being fixedly connected with the center of top 6 lower end, second piston bar 12 is located in lower cylinder 72, and described second
The bottom of piston rod 12 is connected with locking device.The side of matrix 5 is connected with equally distributed four air inlet ducts 11, air inlet duct 11
Connect with lower cylinder 72.Gas in using process tire is flowed into piston cylinder 7 from air inlet duct 11, due to the He of exhaust passage 15
The presence of sealing land 13 is connected by cavity 2 due to upper cylinder half 71 with external atmosphere pressure, thus piston has up and down pressure reduction, because
This piston body 10 can move and then cause matrix 5 and top 6 to depart from.
The bottom of second piston bar 12 is connected with locking device, and locking device includes being connected with the bottom of second piston bar 12
Check lock lever, the top of check lock lever is provided with sharp portion 14, and point-like raised 171 and line shape projection 172 are provided with sharp portion 14
Can effective increasing friction force, while it is more convenient to manufacture processing.
Check lock lever can be along second piston bar 12 in the air inlet duct 11 above-below direction move, contact with matrix 5 when top 6
When, sharp portion 14 is hidden in air inlet duct 11, when described top 6 away from described matrix 5, the sharp portion 14 stretch out it is described enter
Air drain 11, thickness of height of the air inlet duct 11 on the direction of the First piston bar 9 less than tire.By check lock lever and second piston
Bar 12 arrange it is at 45 ° enable to that check lock lever is oblique while stretching out to be inserted into tire, further by efficient roadblock
Nail is fixed in tire so as to which the tire being not easy in being traveling gets rid of.
Check lock lever includes the lower beam 19 being connected with second piston bar 12, and lower beam 19 is connected with upper boom 20, arranges on upper boom 20
There is plug 22, the jack 23 with the grafting of the plug 22 is provided with lower beam 19, being also associated between plug 22 and jack 23 ought
The spring 21 of deformation is produced when plug 22 is pulled out from jack 23, sharp portion 14 is located at upper boom 20 relative to the another of jack 23
Side.Check lock lever is divided into lower beam 19, upper boom 20, because upper boom 20 is inserted into tire by sharp portion 14, when we need by
When efficiently road barricade nail takes out from tire, upper boom 20 can be separated with tubulose rod set still still can be connected by spring 21, when taking
Go out behind matrix 5 and top 6 us just easily can be taken out upper boom 20 by spring 21 using instruments such as pliers, be taken out
After reinstall in tubulose rod set, remain able to reuse.
Additionally, top 6 magnet 16 departed from from matrix 5 under being provided with top 6 for preventing off working state.Arrange
Magnet 16 enables to top 6 will not be departed from so as to be convenient to use in a non-operative state from matrix 5.
When in use, when running car is gone over, tire can contact and can penetrate tire to the efficient road barricade nail with top 6
In, because in the present invention top 6 are arranged in cone, therefore, it is possible to penetrating in the middle of tire quickly, puncturing mechanism can
Gradually penetrate in the middle of tire, until air inlet duct 11 starts to be contacted with the air in tire, now due to air inlet duct 11
Highly less than the thickness of tire, now air is entered into the middle of piston cylinder 7, due to the pressure of air so that promote piston body 10
Motion, because piston body 10 is connected to top 6, therefore top 6 by First piston bar 9 and chuck motion is started simultaneously at, therefore
Now top 6 start to depart from matrix 5, due to being provided with the exhaust passage 15 connected with cavity 2 on the top surface 8 of matrix 5, now arrange
Gas passage 15 is opened, and is now exhausted by exhaust passage 15, because therefore exhaust passage 15 can be rapidly performed by exhaust
More can quickly discharge the gas in tire;Because piston body 10 passes through second piston bar while piston body 10 is moved
12 drive locking device motion, and in motion process, check lock lever is moved in air inlet duct 11, so as to stretch out air inlet duct 11,
So that check lock lever top has been arrived on tire, preferably can be connected with tire due to being provided with sharp portion 14 on check lock lever, because
This is prevented from tire rotary course efficient road barricade nail and splashes and bring bad impact.
To sum up, the present invention can quickly be inserted into use in tire and to tire and quickly be put
Gas, the efficient road barricade nail have the advantages that it is easy to use, while the efficient road barricade nail in use will not from rotation wheel
Dance in the air on tire, it is to avoid have undesirable effect;And can disassemble from tire after the completion of the efficient road barricade nail use, repeat
Use.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of efficient road barricade nail, is made using iron and steel, for deflating to the tire in traveling, including triangular pyramid body
(1), it is provided with cavity (2), and the triangular pyramid body (1) in the triangular pyramid body (1) and is provided with and the cavity (2)
The venthole (3) of connection, the summit of the triangular pyramid is provided with the intercommunicating pore (4) connected with the cavity (2), and its feature exists
In:It is vertically connected with each summit of the triangular pyramid body (1) and punctures mechanism, the mechanism that punctures includes and the Rhizoma Sparganii
The matrix (5) that cone body (1) is fixedly connected, the top of described matrix (5) is connected with top (6) of cone, described matrix (5)
The conical shape formed after connecting with described top (6), described matrix (5) is referred to as top surface with the contact surface of top (6)
(8), described matrix (5) center is provided with piston cylinder (7), and the piston rod interior sealing sliding has piston body (10), described
Piston cylinder (7) is divided into upper cylinder half (71) and lower cylinder (72) by the piston body (10), and the upper cylinder half (71) is intersected with top surface (8), and
The position near top surface (8) arranges exhaust passage (15), and the exhaust passage (15) is by intercommunicating pore (4) and the cavity
(2) connect;The sealing land (13) with the upper cylinder half (71) grafting is provided with top (6);The piston body (10)
First piston bar (9) and second piston bar (12) are connected to up and down, wherein the First piston bar (9) is positioned at upper cylinder half
(71), while being fixedly connected with the center of top (6) lower end, the second piston bar (12) is positioned at the lower cylinder (72)
In, and the bottom of the second piston bar (12) is connected with locking device;The side of described matrix (5) be evenly arranged with it is some enter
Air drain (11), the air inlet duct (11) connects with lower cylinder (72);The locking device includes and the second piston bar (12)
The check lock lever of bottom connection, the top of the check lock lever is provided with sharp portion (14), and the check lock lever can be in air inlet duct (11)
It is interior to move up and down along the second piston bar (12), when top (6) contact with described matrix (5), the sharp portion
(14) it is hidden in air inlet duct (11);Tire is punctured when mechanism is punctured, gas is entered into lower cylinder (72) from recent groove, due to
Up and down with pressure reduction, piston body (10) drives top (6) away from matrix (5) to cylinder (72), the sharp portion (14) stretch out it is described enter
Air drain (11), in lunging tire;Thickness of height of the air inlet duct (11) on the First piston bar (9) direction less than tire
Degree.
2. a kind of efficient road barricade nail according to claim 1, it is characterised in that:The cavity (2) is spherical cavity
(2) weighted spherical ball (18) of some lead, is provided with the cavity (2).
3. a kind of efficient road barricade nail according to claim 1 or claim 2, it is characterised in that:The check lock lever includes
The lower beam (19) being connected with the second piston bar (12), the lower beam (19) is connected with upper boom (20), on the upper boom (20)
Plug (22) is provided with, the jack (23) with the plug (22) grafting is provided with the lower beam (19), the jack (23),
It is also associated with producing the spring of deformation when plug (22) is pulled out from jack (23) between the plug (22) and jack (23)
(21), the sharp portion (14) positioned at the upper boom (20) relative to jack (23) opposite side.
4. a kind of efficient road barricade nail according to claim 3, it is characterised in that:It is provided with for preventing on top (6)
The magnet (16) that only top (6) depart from from described matrix (5) under off working state.
5. a kind of efficient road barricade nail according to claim 4, it is characterised in that:Be provided with the sharp portion (14) for
The projection (17) of increasing friction force.
6. a kind of efficient road barricade nail according to claim 5, it is characterised in that:The projection (17) is raised for point-like
(171) and/or line shape projection (172).
7. a kind of efficient road barricade nail according to claim 6, it is characterised in that:The check lock lever and the second piston bar
(12) arrange in 45° angle.
8. a kind of efficient road barricade nail according to claim 1 or claim 2, it is characterised in that:Set on top (6)
The magnet (16) that top (6) depart from from described matrix (5) under being equipped with for preventing off working state.
9. a kind of efficient road barricade nail according to claim 1 or claim 2, it is characterised in that:The sharp portion (14)
On be provided with projection (17) for increasing friction force.
10. a kind of efficient road barricade nail according to claim 1 or claim 2, it is characterised in that:Raised (17) are
Point-like projection (171) and/or line shape projection (172).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710103200.3A CN106638384A (en) | 2017-02-24 | 2017-02-24 | Efficient roadblock nail |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710103200.3A CN106638384A (en) | 2017-02-24 | 2017-02-24 | Efficient roadblock nail |
Publications (1)
Publication Number | Publication Date |
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CN106638384A true CN106638384A (en) | 2017-05-10 |
Family
ID=58847507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201710103200.3A Withdrawn CN106638384A (en) | 2017-02-24 | 2017-02-24 | Efficient roadblock nail |
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Country | Link |
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CN (1) | CN106638384A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112962611A (en) * | 2021-02-02 | 2021-06-15 | 中建二局第一建筑工程有限公司 | Underwater concrete pouring guide pipe lifting device |
CN113718679A (en) * | 2021-08-25 | 2021-11-30 | 青岛市人民警察训练基地 | Active and passive car arrester |
-
2017
- 2017-02-24 CN CN201710103200.3A patent/CN106638384A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112962611A (en) * | 2021-02-02 | 2021-06-15 | 中建二局第一建筑工程有限公司 | Underwater concrete pouring guide pipe lifting device |
CN113718679A (en) * | 2021-08-25 | 2021-11-30 | 青岛市人民警察训练基地 | Active and passive car arrester |
CN113718679B (en) * | 2021-08-25 | 2022-08-09 | 青岛市人民警察训练基地 | Active and passive car arrester |
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WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170510 |
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WW01 | Invention patent application withdrawn after publication |