CN211525630U - Fire-proof valve - Google Patents
Fire-proof valve Download PDFInfo
- Publication number
- CN211525630U CN211525630U CN202020127237.7U CN202020127237U CN211525630U CN 211525630 U CN211525630 U CN 211525630U CN 202020127237 U CN202020127237 U CN 202020127237U CN 211525630 U CN211525630 U CN 211525630U
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- CN
- China
- Prior art keywords
- cambered surface
- fire
- block
- counter weight
- airflow channel
- 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.)
- Expired - Fee Related
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- 230000002265 prevention Effects 0.000 claims abstract description 26
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract 1
- 239000012943 hotmelt Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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- Air-Flow Control Members (AREA)
Abstract
The utility model relates to a fire damper, it includes the fire damper body, the airflow channel who supplies gas to pass through has been seted up in the fire damper body, it has the fire prevention tripe that is used for hiding stifled airflow channel after freely falling to articulate on the inside roof of airflow channel, fire prevention tripe lower extreme is provided with counter weight cambered surface piece, on the airflow channel lateral wall in the other control fire prevention tripe that is provided with of counter weight cambered surface piece position when upwards packing up of fire prevention tripe whether moves down, the airflow channel lateral wall is provided with the spacing rectangular of keeping away from control assembly lateral wall counterbalance with counter weight cambered surface piece along vertical direction in counter weight oblique side, control assembly removes the support to counter weight oblique surface piece automatically under high temperature environment, thereby make fire prevention tripe whereabouts hide stifled airflow channel. The utility model discloses have and make things convenient for the installation of fire prevention valve body and occupy the less function of fire prevention valve inner space.
Description
Technical Field
The utility model belongs to the technical field of the technique of fire control and specifically relates to a fire prevention valve is related to.
Background
The fire-proof valve is mainly a valve installed in the pipeline of ventilation air-conditioning system for automatically blocking the hot air flow from fire area and flame passing through. At ordinary times, the ventilation state of normally opening is in the pipeline, and when a fire disaster happens, the valve can be closed in time to cut off the pipeline through temperature sensing control, manual control and electric appliance control, so that smoke and fire are prevented from spreading, and the spread of the fire disaster is limited.
The patent document with the publication number of CN201036669 in the prior art discloses a building exhaust duct fire damper provided with a fire damper valve plate and a fire damper body with an air inlet and an air outlet, which is characterized in that: the upper part of the outer wall of the fireproof valve body is provided with a hollow groove communicated with an air flow channel in the valve body, a vertical support rod is fixed on the outer wall of the fireproof valve body, the upper part of the fireproof valve plate is hung on the support rod through a hot melt piece, the lower end of the fireproof valve plate extends into the hollow groove in a movable fit mode, and the fireproof valve plate cuts off the air flow channel in the valve body in a free falling state.
The above prior art solutions have the following drawbacks: because antiskid valve block and overheated fuse piece all set up on the fire prevention valve body outer wall, so occupied the outer extra space of fire prevention valve body, be unfavorable for the whole installation on the exhaust duct of fire prevention valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fire prevention valve, have the function that makes things convenient for fire prevention valve body installation and occupy the fire prevention valve inner space less.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a fire valve comprises a fire valve body, wherein an airflow channel for gas to pass through is arranged in the fire valve body, a fire-proof louver used for blocking the airflow channel after freely falling is hinged on the top wall in the airflow channel, a counterweight arc-shaped block is arranged at the lower end of the fire-proof louver, a control component for controlling whether the fire-proof louver moves downwards or not is arranged on the side wall of the airflow channel beside the position of the counterweight arc-shaped block when the fire-proof louver is folded upwards, the control component comprises a valve box and a sliding arc-shaped block connected in the valve box in a sliding manner, a sliding groove for connecting the sliding arc-shaped block in a sliding manner is formed in the valve box, a hot melting block is arranged at one end, away from the counterweight arc-shaped block, of the sliding arc-shaped block, protrudes out of the sliding groove towards one end of the counterweight arc-shaped block, the upper part of the end is abutted against the lower part of the counterweight arc-shaped block, and cambered surfaces are arranged on, the cambered surface of the cambered surface piece that slides is in the one end that offsets with the counter weight cambered surface piece and towards the slope of counter weight cambered surface piece, the cambered surface of counter weight cambered surface piece is in the one end that offsets with the cambered surface piece that slides and towards the slope of cambered surface piece that slides, counter weight cambered surface piece and fire prevention tripe are with wide, the airflow channel lateral wall is provided with the spacing rectangular of keeping away from valve box lateral wall counterbalance with counter weight cambered surface piece along vertical direction to one side in the counter weight.
By adopting the technical scheme, the arrangement of the counterweight arc-shaped block can ensure that the fireproof shutter always has the trend of moving downwards, the hot melting block is arranged at one side of the sliding arc-shaped block far away from the counterweight arc-shaped block, and the sliding arc-shaped block is abutted against the arc surfaces of the counterweight arc-shaped block and the counterweight arc-shaped block, so that the counterweight arc-shaped block can not move downwards, and then the counterweight arc-shaped block can push the sliding arc-shaped block to the position of the original hot melting block when the hot melting block is melted, so that the counterweight arc-shaped block can smoothly move downwards and drive the fireproof shutter until the lower end of the counterweight arc-shaped block is abutted against the bottom wall of the airflow channel, so that the blockage of the airflow channel is completed, further spread of fire is prevented, the whole structure is less, the installation is simple and convenient, and the device does not only occupy the external space of the fireproof valve body due to the, and occupies less space in the airflow path.
The present invention may be further configured in a preferred embodiment as: the side wall of the sliding cambered surface block is provided with a limiting block, and the wall of the sliding groove is provided with a limiting groove for the limiting block to slide.
Through adopting above-mentioned technical scheme, the stopper sets up with the cooperation of spacing groove and apron can make the cambered surface piece that slides offset with the counter weight cambered surface piece more steadily, has reduced the cambered surface piece that slides and has taken place wrong displacement or rotatory possibility, has guaranteed that the cambered surface piece that slides can smoothly slide towards the position of keeping away from the counter weight cambered surface piece after the hot melt piece melts to guaranteed that the balancing weight can normally push the cambered surface piece that slides to the position of keeping away from the counter weight cambered surface piece and fall to the air current passageway diapire.
The present invention may be further configured in a preferred embodiment as: the cross-section of stopper is the rectangle, it is provided with the drive curved surface piece that slides to have all the time to keeping away from the spring that pushes back that counter weight cambered surface piece direction removed trend to be provided with between the one end that the limiting groove is close to counter weight cambered surface piece in the limiting groove in a lateral wall that the limiting block is close to counter weight cambered surface piece and limiting groove, it is the same with sliding groove length direction to push back spring axle center direction.
Through adopting above-mentioned technical scheme, the setting of pushing back the spring can further guarantee that the cambered surface piece that slides can smoothly slide to the position of keeping away from counter weight cambered surface piece, has reduced the cambered surface groove that slides and has blocked the probability in the groove that slides.
The present invention may be further configured in a preferred embodiment as: and the side walls of the limit groove wall and the limit block, which are abutted against the push-back spring, are provided with placing grooves for the push-back spring to abut against.
Through adopting above-mentioned technical scheme, the setting of standing groove can make the spring that pushes back offset with spacing groove cell wall and stopper steadily to the probability of the inefficacy of spring that has reduced to push back has been reduced.
The present invention may be further configured in a preferred embodiment as: the sliding groove is connected with the side wall and the bottom wall of the hot melting block in a penetrating mode, and air holes are formed in the side wall and the bottom wall of the hot melting block in a penetrating mode.
Through adopting above-mentioned technical scheme, the setting of bleeder vent just can make external heat conduct to the hot melt piece fast at first, has guaranteed hot melt piece's reaction rate, then can provide the passageway of leaking for the hot melt piece when melting into liquid to the cambered surface piece that slides provides the space that slides better.
The present invention may be further configured in a preferred embodiment as: the limiting strip is connected with the top wall and the bottom wall inside the airflow channel.
Through adopting above-mentioned technical scheme, fire prevention tripe can be guaranteed not along vertical direction whereabouts at the whereabouts in-process to spacing rectangular setting to stability and the gas tightness of its use have been strengthened.
The present invention may be further configured in a preferred embodiment as: the middle position of each tripe on the fire prevention tripe extends along length direction towards the outer end of both sides and is provided with the guide post, set up the whereabouts groove that supplies the guide post to slide along length direction on the inside lateral wall of airflow channel.
Through adopting above-mentioned technical scheme, the guide post further can be stably along vertical direction whereabouts when having guaranteed fire prevention tripe whereabouts with the setting in groove that falls down, prevents to produce the poor problem of gas tightness because counter weight cambered surface piece or fire prevention tripe fall aslope.
The present invention may be further configured in a preferred embodiment as: and a groove for inserting the counterweight cambered surface block is formed in the bottom wall of the airflow channel below the counterweight cambered surface block.
Through adopting above-mentioned technical scheme, airflow channel diapire is seted up and is supplied counter weight cambered surface piece male recess can be so that can be stably in it after counter weight cambered surface piece inserts the recess to fire prevention tripe overall structure's stability has been guaranteed.
The present invention may be further configured in a preferred embodiment as: the counterweight cambered surface block is made of magnetic materials, and magnetic materials attracted with the counterweight cambered surface block are arranged in the groove.
Through adopting above-mentioned technical scheme, the setting that counter weight cambered surface piece and recess magnetism attract mutually makes counter weight cambered surface piece can be in the recess more steadily to guaranteed that the fire prevention tripe plays better air current blockade effect for the air current passageway.
To sum up, the utility model discloses following beneficial effect has:
1. the fireproof shutter can play a role in saving space when being contracted, the fireproof shutter does not occupy the external space of the fireproof valve body, the occupied space in the airflow channel is small, the counterweight arc-shaped block is matched with the control assembly to ensure that the fireproof shutter cannot fall randomly, and the counterweight arc-shaped block can push the sliding arc-shaped block to one end far away from the sliding arc-shaped block only when the hot melting block is molten, so that the counterweight arc-shaped block can smoothly drive the fireproof shutter to fall, and the airflow channel is blocked;
2. the setting that is provided with the stopper on the lateral wall of the cambered surface piece that slides can guarantee that the cambered surface piece that slides only normally slides along the length direction in groove that slides, and the setting of bleeder vent, push back spring and spacing groove all can increase the cambered surface piece that slides smoothly and to keeping away from the position of counter weight cambered surface piece to thereby guarantee that counter weight cambered surface piece normally drives the function that the fire prevention tripe whereabouts prevented firework from stretching when hot melt piece melts.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic structural diagram of a control assembly in the present embodiment;
FIG. 3 is a vertical cross-sectional view of the push-back spring in the retaining groove of the present embodiment;
fig. 4 is an enlarged view of a portion a in fig. 3.
Reference numerals: 1. a fire damper body; 11. an air flow channel; 13. fire-proof shutters; 14. a counterweight cambered surface block; 15. a limiting strip; 16. mounting blocks; 17. a dropping groove is formed; 18. a groove; 19. a guide post; 2. a valve box; 21. a sliding groove; 22. sliding the cambered surface block; 23. a hot melt block; 24. a limiting block; 25. a limiting groove; 26. pushing back the spring; 27. a placement groove; 28. air holes are formed; 29. a cambered surface; 3. a control component; 31. and (7) a cover plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a fire damper, including fire damper body 1, set up the airflow channel 11 that supplies gas to pass through in the fire damper body 1, airflow channel 11 cross-section is the rectangle, and the inside roof of airflow channel 11 is provided with the fire prevention tripe 13 that can shelter from airflow channel 11.
Referring to fig. 2 and 3, a control component 3 for controlling whether the fireproof louver 13 moves downwards is arranged on the side of the bottom of the upwards retracted fireproof louver 13 on the side wall of the airflow channel 11, the control component 3 includes a valve box 2, the valve box 2 is cuboid, a mounting block 16 abutting against the side wall of the airflow channel 11 is arranged at the bottom of the valve box 2 in an extending manner, and the mounting block 16 is connected with the side wall of the airflow channel 11 through a bolt.
Referring to fig. 2 and 4, the bottom of the fire-proof shutter 13 at the lowest position is provided with a counterweight arc block 14 with an arc surface 29 facing obliquely downwards, and the arc surface 29 is an arc surface 29. The valve box 2 is disposed at a lateral position of the sidewall of the airflow channel 11 where the cambered surface 29 of the counterweight faces, and the sidewall of the airflow channel 11 is disposed at a lateral side of the counterweight far away from the valve box 2, and is vertically oriented and is connected with the top wall and the bottom wall of the airflow channel 11.
Referring to fig. 2 and 4, the counterweight arc-shaped blocks 14 have the same length and width as the fire-proof shutter 13, and the mass of the counterweight arc-shaped blocks 14 is slightly heavier than the whole mass of the fire-proof shutter 13, so that the counterweight arc-shaped blocks 14 can play a role of fixing and pulling down the fire-proof shutter 13 when the fire-proof shutter 13 falls down, and prevent the fire-proof shutter 13 from being raised. The upper surface of the valve box 2 is provided with a sliding groove 21, the upper surface of the valve box 2 is further screwed with a cover plate 31 for covering the upper surface of the valve box 2, the length direction of the sliding groove 21 is horizontal, the sliding groove 21 penetrates through the side wall of the valve box 2 close to the fireproof louver 13, the control component 3 further comprises a sliding arc surface block 22 connected to the sliding groove 21 in a sliding mode, the sliding arc surface block 22 is provided with an arc surface 29, and the arc surface 29 is also an arc surface 29. The arc face 29 of the slip arc face piece 22 abuts against the arc face 29 of the counterweight arc face piece 14, so that the counterweight arc face piece 14 cannot fall.
Referring to fig. 2 and 4, the sliding groove 21 is provided with a rectangular parallelepiped heat-fusible block 23 on the side of the sliding arc block 22 away from the counterweight arc block 14, and the heat-fusible block 23 is a conventional one and is melted into a liquid state at a high temperature. The length of the sliding arc surface block 22 is not more than the length of the sliding groove 21, one side of the hot melt block 23 is abutted against the side wall of the sliding groove 21, and the other side of the hot melt block is abutted against the side wall of the sliding arc surface block 22 far away from the counterweight arc surface block 14, so that the length of the hot melt block 23 on the sliding groove 21 along the groove length direction is equal to the length of the sliding arc surface block 22 protruding out of the sliding groove 21, and the groove wall and the groove bottom of the sliding groove 21 connected with the hot melt block 23 are both provided with air holes 28 in a penetrating manner.
Referring to fig. 2 and 4, the side wall of the sliding cambered surface block 22 close to the center of the airflow channel 11 extends to be provided with a limiting block 24 with a rectangular cross section at one end far away from the counterweight cambered surface block 14, the upper surface of the valve box 2 is provided with a limiting groove 25 for sliding the limiting block 24, the hot melting block 23 also extends into the limiting groove 25, and the groove wall of the valve box 2 provided with the limiting groove 25 is in threaded connection with the valve box 2.
Referring to fig. 2 and 4, a push-back spring 26 for driving the sliding arc surface block 22 to always move towards the direction away from the counterweight arc surface block 14 is arranged between a side wall of the limiting block 24 close to the counterweight arc surface block 14 and a groove wall of the limiting groove 25 close to the counterweight arc surface block 14, and the axial direction of the push-back spring 26 is the same as the length direction of the sliding groove 21, so that the push-back spring 26 can always generate a pushing force for pushing the limiting block 24 towards the direction away from the counterweight arc surface block 14.
Referring to fig. 3 and 4, the middle of each fire-proof louver 13 is provided with a guide post 19 extending towards the outer ends of the two sides along the length direction, the guide post 19 is cylindrical, the diameter of the guide post 19 is greater than the thickness of the louver, and the inner side wall of the airflow channel 11 is provided with a falling groove 17 along the length direction for the guide post 19 to slide. A groove 18 for inserting the counterweight arc surface block 14 is formed in the bottom wall of the airflow channel 11 below the counterweight arc surface block 14, the counterweight arc surface block 14 can be made of magnetic alloy, and a magnetic material capable of attracting the counterweight arc surface block 14 is arranged in the groove 18. Both sides of the inside lateral wall of airflow channel 11 all are provided with spacing rectangular 15 and control assembly 3.
The implementation principle of the embodiment is as follows: when a fire occurs, the fire and smoke spread into the airflow channel 11, the hot melt block 23 rapidly heats up until melting, at this time, the sliding arc block 22 faces the direction of the position of the original hot melt block 23 under the combined action of the extrusion of the counterweight arc block 14 and the push-back spring 26, and when one side wall of the sliding arc block 22 away from the counterweight arc block 14 abuts against the groove wall of the sliding groove 21, at this time, the counterweight arc block 14 can vertically fall under the restriction of the guide column 19 and the limiting strip 15 until falling into the groove 18, and the circulation of the gas in the airflow channel 11 is sealed and locked.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a fire prevention valve, includes fire prevention valve body (1), its characterized in that: an airflow channel (11) for air to pass through is formed in the fire-proof valve body (1), a fire-proof louver (13) used for blocking the airflow channel (11) after the fire-proof louver falls freely is hinged to the top wall inside the airflow channel (11), a counterweight cambered surface block (14) is arranged at the lower end of the fire-proof louver (13), a control assembly (3) for controlling whether the fire-proof louver (13) moves downwards or not is arranged on the side wall of the airflow channel (11) beside the position of the counterweight cambered surface block (14) when the fire-proof louver (13) is folded upwards, the control assembly (3) comprises a valve box (2) and a sliding cambered surface block (22) connected with the sliding cambered surface block (22) in the valve box (2) in a sliding mode, a sliding groove (21) for the sliding connection of the sliding cambered surface block (22) is formed in the valve box (2), and a hot melting block (23) is arranged at one end, far away from the counterweight, the one end protrusion in groove (21) that slides of cambered surface piece (22) orientation counter weight cambered surface piece (14) to the top of this end offsets with the below of counter weight cambered surface piece (14), all be provided with cambered surface (29) on gliding cambered surface piece (22) and counter weight cambered surface piece (14), cambered surface (29) of gliding cambered surface piece (22) are in the one end that offsets with counter weight cambered surface piece (14) and incline towards counter weight cambered surface piece (14), cambered surface (29) of counter weight cambered surface piece (14) are in the one end that offsets with gliding cambered surface piece (22) and incline towards gliding cambered surface piece (22), counter weight cambered surface piece (14) and fire prevention tripe (13) are with wide, airflow channel (11) lateral wall is provided with in the oblique other vertical direction of counter weight and keeps away from spacing rectangular (15) that a lateral wall of valve box (2) offset with counter weight cambered surface piece (14).
2. A fire damper as claimed in claim 1, wherein: the side wall of the sliding arc surface block (22) is provided with a limiting block (24), and the groove wall of the sliding groove (21) is provided with a limiting groove (25) for the limiting block (24) to slide.
3. A fire damper as claimed in claim 2, wherein: the cross-section of stopper (24) is the rectangle, be provided with drive cambered surface piece (22) that slides in stopper (25) between the one end that is close to counter weight cambered surface piece (14) in stopper (24) lateral wall and stopper groove (25) are close to counter weight cambered surface piece (14) and push back spring (26) that have all the time to keeping away from counter weight cambered surface piece (14) direction removal trend, it is the same with sliding groove (21) length direction to push back spring (26) axle center direction.
4. A fire damper as claimed in claim 3, wherein: and a placing groove (27) for the push-back spring (26) to abut against is formed in the side wall of the limiting groove (25) and the side wall of the limiting block (24) abutting against the push-back spring (26).
5. A fire damper as claimed in claim 1, wherein: the side wall and the bottom wall of the sliding groove (21) which are abutted to the hot melting block (23) are both provided with air holes (28) in a penetrating way.
6. A fire damper as claimed in claim 1, wherein: the limiting strip (15) is connected with the inner top wall and the inner bottom wall of the airflow channel (11).
7. A fire damper as claimed in claim 1, wherein: the middle position of each shutter on the fireproof shutter (13) extends along the length direction towards the outer ends of two sides to be provided with a guide post (19), and a falling groove (17) for the guide post (19) to slide is formed in the inner side wall of the airflow channel (11) along the length direction.
8. A fire damper as claimed in claim 1, wherein: and a groove (18) for inserting the counterweight arc surface block (14) is formed in the bottom wall of the airflow channel (11) below the counterweight arc surface block (14).
9. A fire damper as claimed in claim 8, wherein: the counterweight arc surface block (14) is made of magnetic materials, and magnetic materials attracted with the counterweight arc surface block (14) are arranged in the groove (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020127237.7U CN211525630U (en) | 2020-01-19 | 2020-01-19 | Fire-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020127237.7U CN211525630U (en) | 2020-01-19 | 2020-01-19 | Fire-proof valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211525630U true CN211525630U (en) | 2020-09-18 |
Family
ID=72459447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020127237.7U Expired - Fee Related CN211525630U (en) | 2020-01-19 | 2020-01-19 | Fire-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211525630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648419A (en) * | 2020-12-14 | 2021-04-13 | 武汉锐达顺通风工程设备制造有限公司 | Installation process of fireproof smoke exhaust valve and fireproof smoke exhaust valve |
-
2020
- 2020-01-19 CN CN202020127237.7U patent/CN211525630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648419A (en) * | 2020-12-14 | 2021-04-13 | 武汉锐达顺通风工程设备制造有限公司 | Installation process of fireproof smoke exhaust valve and fireproof smoke exhaust valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350000 10 Cangshan Park, Pushang District, Jinshan Industrial Zone, Fuzhou City, Fujian Province - 08 Patentee after: Fujian Weiling ventilation equipment Co.,Ltd. Address before: 350000 10 Cangshan Park, Pushang District, Jinshan Industrial Zone, Fuzhou City, Fujian Province - 08 Patentee before: Fuzhou Weiling ventilation equipment Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |