CN207879461U - Pneumatic booster and the pneumatic supercharging device of motor vehicle - Google Patents
Pneumatic booster and the pneumatic supercharging device of motor vehicle Download PDFInfo
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- CN207879461U CN207879461U CN201820259037.XU CN201820259037U CN207879461U CN 207879461 U CN207879461 U CN 207879461U CN 201820259037 U CN201820259037 U CN 201820259037U CN 207879461 U CN207879461 U CN 207879461U
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- pneumatic
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- suction end
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Abstract
The utility model is related to car engine air admittance supercharging device technical fields, specially a kind of pneumatic booster and the pneumatic supercharging device of motor vehicle, it includes wind rotor, supercharging impeller, air intake and suction end, air intake is the open tubular in left and right ends, suction end be horizontally arranged it is closed at both ends barrel-shaped.The utility model reasonable and compact in structure, it is easy to use, by using wind rotor, the wind pressure that automobile generates under steam is set effectively wind rotor to be pushed to rotate, wind rotor drives supercharging impeller rotation, it will quickly and effectively can be sucked in the engine of automobile by filtered air, inhaled air volume and air pressure change with the variation of speed, engine, which has been effectively ensured, enough air imbibed quantities, eliminate the loss to engine power, cooling device is not needed, engine is not allowed to be also easy to produce detonation, it is simple in structure, it is easily installed and safeguards, reduce production cost and maintenance cost.
Description
Technical field
It is a kind of pneumatic booster and motor vehicle the utility model is related to car engine air admittance supercharging device technical field
With pneumatic supercharging device.
Background technology
The boosting system for automobile that Global Auto industry uses is broadly divided into mechanically driver type pressure charging system, turbo charge system
With three kinds of natural aspiration pressure charging system.Wherein mechanically driver type pressure charging system by engine bent axle by gear, transmission chain or
Band directly drives booster, is divided into the forms such as centrifugal, roots-type, Wiper blade type and screw.Its advantage is that engine load pole
The response of booster is rapid when speed variation.The disadvantage is that a set of transmission device is needed, therefore structure is complex, and need to consume and start
A part of power of machine, production cost and maintenance cost are expensive；Turbo charge system mainly divides four major class：Mechanical turbine is pressurized；
Exhaust gas turbocharge, complex supercharge and electronic turbine supercharging, wherein exhaust gas turbocharge is most commonly used supercharging device, by sending out
The exhaust gas driven turbine machine impeller of motivation, then the compressor impeller coaxial with turbine is driven, make air or burning mixture quilt
Compression enters in engine, since turbo charge system is driven using the exhaust energy of engine itself, does not disappear directly
Consume the power of engine, but the power of the engine of turbo charge system can be by larger restriction, two by turbo charging installation
It combines to form combined type pressure charging system with mechanical pressurizing apparatus, then can greatly increase production cost and maintenance cost.
In conclusion that there are production costs and maintenance cost is high, complicated, installation for existing automobile engine supercharging device
Difficult, automobile is short of power when running at a low speed, and meeting consumption of engine power, engine sucking tolerance are few, suck air pressure is not enough to
And temperature height easy tos produce the different problems such as explosion during use.
Invention content
The utility model provides a kind of pneumatic booster and the pneumatic supercharging device of motor vehicle, overcomes above-mentioned existing
The deficiency of technology, capable of effectively solving existing automobile engine supercharging device, there are production cost and maintenance cost height, structure are multiple
Miscellaneous, difficult to install, automobile is short of power when running at a low speed, and meeting consumption of engine power, engine sucking tolerance are few, suck gas
Temperature height easy tos produce the different problems such as explosion during pressure is insufficient and use.
One of the technical solution of the utility model is realized by following measures：A kind of pneumatic booster, including into
Wind end and suction end, air intake are the open tubular in left and right ends, and suction end is horizontal positioned barrel-shaped, air inlet closed at both ends
Be fixedly connected with mounting bracket on the right side of the inner cavity at end, be fixedly connected with connecting box on the right side of the middle part of mounting bracket, the right end of connecting box with
The left side central portion sealing of suction end is fixed, and is fixedly connected with first bearing in the middle part of mounting bracket, the left side central portion of suction end is fixed
It is connected with second bearing, is equipped with shaft in connecting box, left part and the first bearing of shaft are installed together, and the left end of shaft is located at
The inner cavity right part of air intake is simultaneously fixedly connected with wind rotor, and right part and the second bearing of shaft are installed together, the right side of shaft
End is located at the inner cavity right part of suction end and is fixedly connected with supercharging impeller, and the lower end left part of suction end is installed with and suction end
The right end of the air inlet short circuit that inner cavity is connected, suction end is equipped with gas vent, and exhaust is fixedly connected on the gas vent of suction end
Short circuit.
Here is the further optimization and/or improvements to one of above-mentioned utility model technical solution：
Above-mentioned first bearing and second bearing are rolling bearing, and the middle part of mounting bracket is equipped with mounting hole, first bearing
The mounting hole of outer shroud and mounting bracket is fixed together, and the inner ring of first bearing and the left part of shaft are installed together, shaft
Left end pass through mounting bracket to be located at the inner cavity right part of air intake, the left side central portion of suction end is equipped with mounting hole, second bearing outside
Ring is fixedly connected in the mounting hole of suction end, and the inner ring of second bearing and the right part of shaft are installed together, the right end of shaft
It is located at the right part of suction end inner cavity across the left side of suction end.
Above-mentioned mounting bracket include install outer ring, installation inner ring and at least three connecting rod, installation outer ring and installation inner ring
With one heart, it is uniformly fixedly connected at least three connecting rod between installation outer ring and installation inner ring, installs in outer ring and air intake 1
It is fixed together on the right side of chamber, installation inner ring is equipped with mounting hole, installs and is fixedly connected with first axle in the mounting hole of inner ring
It holds.
The left part of above-mentioned air intake is infundibulate left large and right small；Or/and the lower end left part of suction end is equipped with suction hole,
Air inlet short circuit is the short circuit being tilted to the right, and the upper end of air inlet short circuit is fixedly connected on the suction hole of suction end.
Above-mentioned wind rotor and supercharging impeller are unshrouded impeller；Or/and it is fixedly connected in the shaft of wind rotor left
There is locking nut, locking nut is fixedly connected in the shaft of supercharging impeller right.
The technical solution of the utility model second is that being realized by following measures：A kind of machine using pneumatic booster
The pneumatic supercharging device of motor-car, including air filter, outlet manifold and at least one pneumatic booster, air filter are set
There are at least one gas outlet, pneumatic booster to be located at the outside of air filter, the air inlet short circuit and air of pneumatic booster
The corresponding gas outlet of filter is fixed together, and exhaust short circuit and the outlet manifold of pneumatic booster are fixedly connected on one
It rises.
Here is two further optimization and/or improvements to above-mentioned utility model technical solution：
The air inlet short circuit of above-mentioned pneumatic booster is fixedly connected on by air inlet pipe gas outlet corresponding with air filter
Together, the exhaust short circuit of pneumatic booster is fixed together by escape pipe and outlet manifold.
The double pneumatic supercharging devices of above-mentioned motor vehicle include two pneumatic boosters, air filter and outlet manifold,
The front side of air filter and rear side are respectively equipped with two corresponding gas outlets, and two pneumatic boosters are respectively symmetrically distributed in
The front and back of air filter, gas outlet corresponding with air filter is solid respectively for the air inlet short circuit of two pneumatic boosters
Surely it links together, the exhaust short circuit of two pneumatic boosters is fixed together with outlet manifold respectively.
The air inlet short circuit of the pneumatic booster of above-mentioned two is solid by air inlet pipe gas outlet corresponding with air filter respectively
Surely it links together, the exhaust short circuit of two pneumatic boosters is fixed together by escape pipe and outlet manifold respectively.
The utility model reasonable and compact in structure, it is easy to use, by using wind rotor, automobile is made to generate under steam
Wind pressure effectively wind rotor is pushed to rotate, wind rotor drive supercharging impeller rotation, will can quickly and effectively pass through
In the engine of air sucking automobile after filter, inhaled air volume and air pressure change with the variation of speed, effectively protect
Having demonstrate,proved engine has enough air imbibed quantities, eliminates the loss to engine power, does not need cooling device, engine is not
Detonation is easy tod produce, it is simple in structure, it is easily installed and safeguards, reduce production cost and maintenance cost.
Description of the drawings
Attached drawing 1 is the main view schematic cross-sectional view of embodiment 1.
Attached drawing 2 is the overlooking structure diagram of attached drawing 1.
Attached drawing 3 is the left view enlarged structure schematic diagram of attached drawing 1.
Attached drawing 4 is the side view enlarged structure schematic diagram of mounting bracket in attached drawing 1.
Attached drawing 5 is that the main view of embodiment 3 reduces structural schematic diagram.
Coding in attached drawing is respectively：1 is air intake, and 2 be suction end, and 3 be mounting bracket, and 4 be connecting box, and 5 be first axle
It holds, 6 be second bearing, and 7 be shaft, and 8 be wind rotor, and 9 be supercharging impeller, and 10 be air inlet short circuit, and 11 be exhaust short circuit, and 12 are
Outer ring is installed, 13 be installation inner ring, and 14 be connecting rod, and 15 be locking nut, and 16 be air filter, and 17 be escape pipe, and 18 are
Air inlet pipe, 19 be outlet manifold.
Specific implementation mode
The utility model is not limited by following embodiments, can technical solution according to the present utility model and actual conditions
Determine specific embodiment.
In the present invention, for ease of description, the description of the relative position relation of each component is according to specification
The Butut mode of attached drawing 1 is described, such as：The position relationship of front, rear, top, and bottom, left and right etc. is according to Figure of description 1
Butut direction determine.
The utility model is further described with reference to embodiment and attached drawing：
Embodiment 1, as shown in attached drawing 1,2,3,4, which includes air intake 1 and suction end 2, and air intake 1 is
The open tubular in left and right ends, suction end 2 are to be horizontally arranged closed at both ends barrel-shaped, the company of fixation on the right side of the inner cavity of air intake 1
Be connected to mounting bracket 3, be fixedly connected with connecting box 4 on the right side of the middle part of mounting bracket 3, the right end of connecting box 4 in the left side of suction end 2
Portion's sealing is fixed, and the middle part of mounting bracket 3 is fixedly connected with first bearing 5, and the left side central portion of suction end 2 is fixedly connected with the second axis
6 are held, is equipped with shaft 7 in connecting box 4, left part and the first bearing 5 of shaft 7 are installed together, and the left end of shaft 7 is located at air intake
1 inner cavity right part is simultaneously fixedly connected with wind rotor 8, and right part and the second bearing 6 of shaft 7 are installed together, the right end of shaft 7
Positioned at suction end 2 inner cavity right part and be fixedly connected with supercharging impeller 9, the lower end left part of suction end 2 is installed with and air-breathing
The air inlet short circuit 10 that 2 inner cavities are connected, the right end of suction end 2 is held to be equipped with gas vent, be fixedly connected on the gas vent of suction end 2
There is exhaust short circuit 11.In this way, 3 frames of mounting bracket, it is ensured that be effectively connected to outside on the right side of the inner cavity of air intake 1, in work
When making, wind enters from the left side open-mouth of air intake 1, blows the rotation of wind rotor 8, then the returning to external ring from mounting bracket again
Border, wind rotor 8 drive shaft 7 and supercharging impeller 9 to rotate, and negative pressure is just will produce in suction end 2 to terminate air inlet at 10
Air sucking, the effect by supercharging impeller 9 make air compress and from exhaust short circuit 11 at transfer out, first bearing 5
With second bearing 6 can effective less friction, so that wind rotor 8 and supercharging impeller 9 is rotated more flexible.
Above-described embodiment 1 can be made further optimization and/or improvements according to actual needs：
As shown in attached drawing 1,2, first bearing 5 and second bearing 6 are rolling bearing, and the middle part of mounting bracket 3 is equipped with installation
The mounting hole in hole, the outer shroud and mounting bracket 3 of first bearing 5 is fixed together, a left side for the inner ring and shaft 7 of first bearing 5
Portion is installed together, and the left end of shaft 7 is located at the inner cavity right part of air intake 1 across mounting bracket 3, and the left side central portion of suction end 2 is set
There are mounting hole, the outer shroud of second bearing 6 to be fixedly connected in the mounting hole of suction end 2, inner ring and the shaft 7 of second bearing 6
Right part is installed together, and the right end of shaft 7 is located at the right part of 2 inner cavity of suction end across the left side of suction end 2.In this way, can have
Effect so that wind rotor 8 and supercharging impeller 9 is rotated more flexible.
As shown in Fig. 4, mounting bracket 3 includes installation outer ring 12, installs the connecting rod 14 of inner ring 13 and at least three, installation
Outer ring 12 and installation inner ring 13 are concentric, and at least three connection is uniformly fixedly connected between installation outer ring 12 and installation inner ring 13
Bar 14, installation are fixed together on the right side of outer ring 12 and 1 inner cavity of air intake, and installation inner ring 13 is equipped with mounting hole, in installation
It is fixedly connected with first bearing 5 in the mounting hole of circle 13.In this way, installation outer ring 12, installation inner ring 13 and connecting rod 14 can have
Effect ensures the stability of mounting bracket 3, while ensureing that the inner cavity right side of air intake 1 is effectively connected to outside, makes from 1 left side of air intake
The air of entrance is quickly from 1 right side discharge of air intake.
As shown in attached drawing 1,2, the left part of air intake 1 is infundibulate left large and right small；Or/and the lower end left part of suction end 2
Equipped with suction hole, air inlet short circuit 10 is the short circuit being tilted to the right, and the upper end of air inlet short circuit 10 is fixedly connected on the air-breathing of suction end 2
Kong Shang.In this way, the left part of air intake 1 is the air inlet effect that infundibulate left large and right small can enhance air intake 1.
As shown in Fig. 3, wind rotor 8 and supercharging impeller 9 are unshrouded impeller；Or/and turn of 8 left of wind rotor
It is fixedly connected with locking nut 15 on axis 7, locking nut 15 is fixedly connected in the shaft 7 of 9 right of supercharging impeller.In this way, opening
Formula impeller can make full use of wind energy, working efficiency higher, locking nut 15 that wind rotor 8 and supercharging impeller can be effectively ensured
9 are fixedly connected with shaft 7.
Embodiment 2 uses the pneumatic supercharging device of the motor vehicle of pneumatic booster, including air filtration as needed
Device 16, outlet manifold 19 and at least one pneumatic booster, air filter 16 are equipped at least one gas outlet, pneumatic supercharging
Device is located at the outside of air filter 16, and the gas outlet corresponding with air filter 16 of air inlet short circuit 10 of pneumatic booster is fixed
It links together, the exhaust short circuit 11 and outlet manifold 19 of pneumatic booster is fixed together.In this way, at work, wind
The air intake 1 of dynamic booster is mounted on motor vehicle head position, and outlet manifold 19 and the inlet end of motor vehicle engine are solid
Fixed connection, such the utility model is just installed in the engine box of motor vehicles, when motor vehicles start running, because motor-driven
Relative motion between vehicle and atmospheric air produces wind pressure in motor vehicle head position, makes air in air can be with
Entered by the left side of air intake 1, pushes the wind rotor 8 in air intake 1 to rotate, to make the supercharging impeller 9 in suction end 2
Rotation bypasses air through air filter 16 and enters in suction end 2 from air inlet short circuit 10, and then the air in suction end is being pressurized
It is conveyed, is mixed with fuel oil eventually by exhaust short circuit 11 and outlet manifold 19, the utility model by compression under the action of impeller 9,
It is simple in structure, can be with Fast Installation on the rolling stock, pneumatic booster effectively can convey air to engine, and defeated
The pressure and quantity for sending air change with the variation of speed, have fabulous responding ability, can eliminate vehicle in low speed
When the problem of being short of power, and the engine power of motor vehicles will not be lost, using the air in air as power source,
It can not have to cool down to it, it is therefore prevented that the Fire explosion of engine, simple structure are easily installed and safeguard, effectively reduce
Manufacture and the cost of overhaul.
Above-described embodiment 2 can be made further optimization and/or improvements according to actual needs：
As needed, the air inlet short circuit 10 of above-mentioned pneumatic booster by air inlet pipe 18 it is corresponding with air filter 16 go out
Gas port is fixed together, and the exhaust short circuit 11 of pneumatic booster is fixedly connected on one by escape pipe 17 and outlet manifold 19
It rises.
Embodiment 3, as shown in Fig. 5, this uses the pneumatic supercharging device of motor vehicle of pneumatic booster, including two
Pneumatic booster, air filter 16 and outlet manifold 19, the front side of air filter 16 and rear side are respectively equipped with two relatively
The gas outlet answered, two pneumatic boosters are respectively symmetrically distributed in the front and back of air filter 16, two pneumatic superchargings
Gas outlet corresponding with air filter 16 is fixed together the air inlet short circuit 10 of device respectively, the row of two pneumatic boosters
Shortness of breath connects 11 and is fixed together respectively with outlet manifold 19.In this way, at work, the air intake 1 of two pneumatic boosters
Mounted on the both sides of motor vehicle head, outlet manifold 19 is fixedly connected with the inlet end of motor vehicle engine, in this way, this reality
It is just installed in the engine box of motor vehicles with novel, when motor vehicles start running, because of motor vehicles and atmospheric air
Between relative motion, produce wind pressure in motor vehicle head position, allow a left side of the air in air by air intake 1
Side enters, and pushes the wind rotor 8 in air intake 1 to rotate, to make the supercharging impeller 9 in suction end 2 rotate, bypasses air through
Air filter 16 enters from air inlet short circuit 10 in suction end 2, then quilt under the action of supercharging impeller 9 of the air in suction end
Compression conveying, mixes eventually by exhaust short circuit 11 and outlet manifold 19 with fuel oil, the utility model is simple in structure, can be fast
On the rolling stock, two pneumatic boosters significantly more efficient can convey air to engine, and convey air for speed installation
Pressure and quantity change with the variation of speed, have fabulous responding ability, vehicle power in low speed can be eliminated
Insufficient problem, and the engine power of motor vehicles will not be lost, it, can not using the air in air as power source
Cooled down with to it, it is therefore prevented that the Fire explosion of engine, simple structure are easily installed and safeguard, effectively reduce manufacture
And the cost of overhaul.
Above-described embodiment 3 can be made further optimization and/or improvements according to actual needs：
As shown in Fig. 5, the air inlet short circuit 10 of two pneumatic boosters passes through air inlet pipe 18 and air filter 16 respectively
Corresponding gas outlet is fixed together, and the exhaust short circuit 11 of two pneumatic boosters is total by escape pipe 17 and outlet respectively
Pipe 19 is fixed together.
The above technical characteristic constitutes the embodiments of the present invention, can with stronger adaptability and implementation result
Increase and decrease non-essential technical characteristic according to actual needs, to meet the needs of different situations.
Claims (10)
1. a kind of pneumatic booster, it is characterised in that including air intake and suction end, air intake is the open cylinder in left and right ends
Shape, suction end are horizontal positioned closed at both ends barrel-shaped, are fixedly connected with mounting bracket on the right side of the inner cavity of air intake, in mounting bracket
Connecting box is fixedly connected on the right side of portion, the left side central portion sealing of the right end and suction end of connecting box is fixed, and the middle part of mounting bracket is solid
Surely it is connected with first bearing, the left side central portion of suction end is fixedly connected with second bearing, shaft, a left side for shaft are equipped in connecting box
Portion is installed together with first bearing, and the left end of shaft is located at the inner cavity right part of air intake and is fixedly connected with wind rotor, is turned
The right part of axis is installed together with second bearing, and the right end of shaft is located at the inner cavity right part of suction end and is fixedly connected with supercharging leaf
Wheel, the lower end left part of suction end are installed with the air inlet short circuit being connected with suction end inner cavity, and the right end of suction end is equipped with row
Stomata is fixedly connected with exhaust short circuit on the gas vent of suction end.
2. pneumatic booster according to claim 1, it is characterised in that first bearing and second bearing are rolling bearing,
The middle part of mounting bracket is equipped with mounting hole, and the outer shroud of first bearing and the mounting hole of mounting bracket are fixed together, first bearing
Inner ring and the left part of shaft be installed together, the left end of shaft passes through mounting bracket to be located at the inner cavity right part of air intake, suction end
Left side central portion be equipped with mounting hole, the outer shroud of second bearing is fixedly connected in the mounting hole of suction end, the inner ring of second bearing
It is installed together with the right part of shaft, the right end of shaft is located at the right part of suction end inner cavity across the left side of suction end.
3. pneumatic booster according to claim 1 or 2, it is characterised in that mounting bracket includes installation outer ring, installation inner ring
With at least three connecting rod, installation outer ring and installation inner ring are concentric, install and are uniformly fixedly connected between outer ring and installation inner ring
There is at least three connecting rod, install and be fixed together on the right side of outer ring and air intake inner cavity, installation inner ring is equipped with installation
Hole installs and is fixedly connected with first bearing in the mounting hole of inner ring.
4. pneumatic booster according to claim 1 or 2, it is characterised in that the left part of air intake is funnel left large and right small
Shape；Or/and the lower end left part of suction end is equipped with suction hole, air inlet short circuit is the short circuit being tilted to the right, and the upper end of air inlet short circuit is solid
Surely it is connected on the suction hole of suction end.
5. pneumatic booster according to claim 3, it is characterised in that the left part of air intake is infundibulate left large and right small；
Or/and the lower end left part of suction end is equipped with suction hole, air inlet short circuit is the short circuit being tilted to the right, and the upper end of air inlet short circuit, which is fixed, to be connected
It is connected on the suction hole of suction end.
6. pneumatic booster according to claim 5, it is characterised in that wind rotor and supercharging impeller are unshrouded impeller；
Or/and locking nut is fixedly connected in the shaft of wind rotor left, lock is fixedly connected in the shaft of supercharging impeller right
Tight nut.
7. a kind of filled using the pneumatic supercharging of the motor vehicle of pneumatic booster as described in claims 1 or 2 or 3 or 4 or 5 or 6
It sets, it is characterised in that including air filter, outlet manifold and at least one pneumatic booster, air filter is equipped at least one
A gas outlet, pneumatic booster are located at the outside of air filter, air inlet short circuit and the air filter phase of pneumatic booster
The gas outlet answered is fixed together, and exhaust short circuit and the outlet manifold of pneumatic booster are fixed together.
8. the pneumatic supercharging device of motor vehicle according to claim 7, it is characterised in that pneumatic booster into shortness of breath
It connected air inlet pipe gas outlet corresponding with air filter to be fixed together, the exhaust short circuit of pneumatic booster is by going out
Tracheae is fixed together with outlet manifold.
9. the pneumatic supercharging device of motor vehicle according to claim 7 or 8, it is characterised in that including two pneumatic superchargings
Device, air filter and outlet manifold, the front side of air filter and rear side are respectively equipped with two corresponding gas outlets, two
Pneumatic booster is respectively symmetrically distributed in the front and back of air filter, the air inlet short circuits of two pneumatic boosters respectively with
The corresponding gas outlet of air filter is fixed together, and the exhaust short circuit of two pneumatic boosters is solid with outlet manifold respectively
Surely it links together.
10. the pneumatic supercharging device of motor vehicle according to claim 9, it is characterised in that two pneumatic boosters into
Shortness of breath connects to be fixed together by air inlet pipe gas outlet corresponding with air filter respectively, the row of two pneumatic boosters
Shortness of breath connects to be fixed together by escape pipe and outlet manifold respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820259037.XU CN207879461U (en) | 2018-02-14 | 2018-02-14 | Pneumatic booster and the pneumatic supercharging device of motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820259037.XU CN207879461U (en) | 2018-02-14 | 2018-02-14 | Pneumatic booster and the pneumatic supercharging device of motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207879461U true CN207879461U (en) | 2018-09-18 |
Family
ID=63499188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820259037.XU Expired - Fee Related CN207879461U (en) | 2018-02-14 | 2018-02-14 | Pneumatic booster and the pneumatic supercharging device of motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207879461U (en) |
-
2018
- 2018-02-14 CN CN201820259037.XU patent/CN207879461U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 Termination date: 20190214 |