CN210164964U - Take fuel connector of super current protection and steady voltage function - Google Patents
Take fuel connector of super current protection and steady voltage function Download PDFInfo
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- CN210164964U CN210164964U CN201920441383.4U CN201920441383U CN210164964U CN 210164964 U CN210164964 U CN 210164964U CN 201920441383 U CN201920441383 U CN 201920441383U CN 210164964 U CN210164964 U CN 210164964U
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Abstract
The utility model discloses a take gas connector of super current protection and steady voltage function, it is when the outside atmospheric pressure of admitting air is too big, the ejector pin receives the thrust effect of admitting air and moves to first piston direction, dwindles the air current space between protruding ring portion and the first valve port gradually, thereby make the flow through the first valve port can not suddenly increase, and after the outside atmospheric pressure of admitting air descends, the thrust of admitting air to the ejector pin also reduces, at this moment under the elastic reset action of first spring, first spring is through the reverse movement of first piston roof pressure ejector pin, make the air current space between protruding ring portion and the first valve port grow gradually, thereby make the flow through the first valve port can not suddenly reduce, be favorable to steady voltage control; when the outer end of the second valve port has an overflow phenomenon, such as flame burning of the connected gas appliance is too fast, the second piston overcomes the elastic force of the third spring under the action of larger negative pressure to seal the second valve port, and only the through small hole is left for ventilation, so that the flame of the gas appliance becomes micro-fire, and the overflow protection function is realized.
Description
Technical Field
The utility model relates to a take fuel connector of super current protection and steady voltage function.
Background
In daily life, people often need to use gas appliances for cooking, heating, lighting and the like, so that gas safety is a very important problem for people. At present, the gas appliance on the market generally adopts a simple connecting structure with a gas source and cannot cope with some emergency situations，Such as: connectors between some gas appliances and gas sources do not have the function of flow limiting, when the output airflow of the gas sources is too high, the combustion flame of the gas appliances becomes abnormally high, and the risks of overloading, burning out and even fire and the like of the gas appliances are easy to occur; in addition, when a fire occurs, the general gas appliance and the connection structure thereof cannot cut off gas flow from the root, and the safety is poor.
Therefore, how to overcome the above-mentioned drawbacks has become an important issue to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes above-mentioned technique is not enough, provides a take fuel connector of super current protection and steady voltage function.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a fuel connector with super-flow protection and pressure stabilization functions comprises a connecting body 1, wherein an air inlet cavity 2, an air outlet cavity 3 and a connecting channel 4 for connecting the air inlet cavity 2 and the air outlet cavity 3 are arranged in the connecting body 1, the air inlet cavity 2 is sequentially provided with a first spring 21, a first piston 22 elastically pressed by the first spring 21, a first valve port 23, a push rod 24 with one end penetrating through the first valve port 23 and then pressing against the first piston 22, a second spring 25 for elastically pressing against the push rod 24 and an air inlet nozzle 26 for pressing against the other end of the second spring 25 from the bottom to the outside, a convex ring part 241 convenient for gradually reducing an air flow space between the push rod 24 and the first valve port 23 when the push rod 24 moves towards the first piston 22 is arranged on the periphery of the push rod 24, and a second piston 31, a second piston 31 and a second piston 31 are sequentially arranged on the air outlet cavity 3 from the bottom to the outside, A second valve port 32 for sealing the second piston 31 when the outer end of the second piston is overflown, a third spring 33 for elastically pressing the second piston 31 to open the second valve port 32 when the second piston is reset, and an air outlet nozzle 34 for abutting against the other end of the third spring 33, wherein a through small hole 311 for direct up-and-down communication of the second piston 31 is arranged in the second piston 31, one end of the connecting channel 4 is communicated to the section of the air inlet cavity 2 between the inner bottom of the air inlet cavity 2 and the first valve port 23, and the other end is communicated to the section of the air outlet cavity 3 between the inner bottom of the air outlet cavity 3 and the second valve port 32.
In the above-described fuel connector with the function of excess flow protection and pressure stabilization, the protruding ring portion 241 has an outer wall surface that gradually increases from the first piston 22 toward the intake nozzle 26.
In the above fuel connector with the functions of superflow protection and pressure stabilization, the outer side wall of the first piston 22 is sleeved with the first elastic sealing ring 221 for elastically pressing the inner side wall of the air inlet cavity 2, and the communication opening between the connecting channel 4 and the air inlet cavity 2 is farther from the inner bottom of the air inlet cavity 2 than the first elastic sealing ring 221.
According to the fuel connector with the functions of super-flow protection and pressure stabilization, the inner side wall of the air inlet cavity 2 is provided with the first annular positioning step 201 and the second annular positioning step 202 which are sequentially far away from the inner bottom direction of the cavity of the air inlet cavity 2, the first annular positioning step 201 is provided with the annular piece 203 in a positioning mode, the first valve port 23 is an annular opening of the annular piece 203, and the air inlet nozzle 26 is installed at the second annular positioning step 202 in a positioning mode.
In the above-mentioned fuel connector with the functions of super-flow protection and pressure stabilization, the second piston 31 is provided with a plurality of convex portions 312 protruding toward the bottom of the cavity of the outlet cavity 3, and a gap channel 313 passing from the outer side of the second piston 31 to the through small hole 311 is formed between adjacent convex portions 312.
In the above-mentioned fuel connector with the functions of super-flow protection and pressure stabilization, the outer side of the protruding portion 312 is provided with a gradually changing wall surface 3121 whose contour gradually decreases toward the center of the second piston 31.
In the fuel connector with the functions of super-flow protection and pressure stabilization, the air outlet nozzle 34 is connected with the air outlet cavity 3 through threads so as to adjust the elastic coefficient of the third spring 33 by rotating the air outlet nozzle 34.
In the fuel connector with the functions of super-flow protection and pressure stabilization, the connecting channels 4 are a plurality of strips, and the circumferential arrays of the connecting channels are distributed in the side wall body of the connecting body 1.
According to the fuel connector with the functions of over-flow protection and pressure stabilization, the outer side wall of the connecting body 1 is provided with the high-temperature protection ring 5 used for rapidly dissolving when the temperature is too high, and the connecting body 1 is externally provided with the connecting hand wheel 6 used for abutting against the high-temperature protection ring 5 so as to enable the air inlet nozzle 26 to be butted to an externally connected part.
In the fuel connector with the functions of super-flow protection and pressure stabilization, the inner side wall of the connecting hand wheel 6 is provided with the internal thread 61 for being in threaded connection with an external connected piece.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the first spring, the first piston, the first valve port, the ejector rod, the second spring and the air inlet nozzle are arranged in the air inlet cavity, so that when the external air pressure is too high, the ejector rod moves towards the first piston under the action of air inlet thrust, the air flow space between the convex ring part and the first valve port is gradually reduced, the flow passing through the first valve port cannot be suddenly increased, and when the external air pressure is reduced, the air inlet thrust to the ejector rod is also reduced, at the moment, under the elastic resetting action of the first spring, the first spring presses the ejector rod to reversely move through the first piston, the air flow space between the convex ring part and the first valve port is gradually increased, the flow passing through the first valve port cannot be suddenly reduced, the pressure stabilization control is facilitated, and the air inlet cavity has substantive characteristics and progress; and the second piston, the second valve port, the third spring and the air outlet nozzle are arranged in the air outlet cavity, so that when the overflow phenomenon occurs at the outer end of the second valve port, for example, flame of a connected gas appliance is burnt too fast, the second piston overcomes the elastic force of the third spring under the action of larger negative pressure to seal the second valve port, only the through small hole is left for ventilation, the flame of the gas appliance is changed into micro-fire, the overflow protection function is realized, when the overflow phenomenon stops, for example, a user closes the gas appliance to gradually balance the air pressure on two sides of the second valve port under the action of the through small hole, the second piston automatically resets under the action of the third spring, the second valve port is opened again to prepare for the next round of work, and the air outlet cavity has substantial characteristics and progresses.
2. The convex ring part is provided with an outer side wall surface which is gradually increased from the first piston to the direction of the air inlet nozzle, so that the ejector rod is favorable for easily puncturing the airflow between the convex ring part and the second valve port when the inflow of air is increased so as to move towards the direction of the first piston.
3. The arrangement of the first elastic sealing ring on the outer side wall of the first piston enables gas not to easily enter a region between the first piston and the inner bottom of the air inlet cavity, so that the elastic jacking of the first spring on the first piston is not influenced, and the device has substantive characteristics and progress.
4. The provision of the first annular positioning step and the annular member according to the present disclosure facilitates the installation of the first valve port in the intake chamber by an assembly method, and facilitates the installation of the first spring and the first piston first and then the installation of the first valve port, which has substantial features and advantages.
5. The arrangement of the plurality of protruding portions and the arrangement of the gap channel on the second piston can prevent the through small holes from being tightly attached to the inner bottom of the air outlet cavity, so that the second piston is always tightly attached to the inner bottom of the air outlet cavity due to negative pressure, and can increase the air receiving space of the second piston, thereby preventing the situation that air flow entering the air outlet cavity from the connecting channel cannot blow the second piston to move towards the direction of the second valve port.
6. The outer side of the convex part is provided with a gradually-changed wall surface, the outline of which gradually reduces towards the center direction of the second piston, so that better stress of the second piston is facilitated, and the air flow entering the air outlet cavity from the connecting channel can better blow the second piston to move towards the direction of the second valve port.
7. The air outlet nozzle is connected with the air outlet cavity through threads, so that the elastic coefficient of the third spring can be adjusted by rotating the air outlet nozzle, different overflow thresholds can be conveniently adjusted according to actual conditions when the air outlet nozzle is connected with a gas appliance, the applicability is good, and the air outlet nozzle has substantial characteristics and progress.
8. The connecting body, the high-temperature protection ring and the connecting hand wheel are arranged, so that the high-temperature protection ring is quickly dissolved when the temperature is too high, the connecting hand wheel cannot enable the air inlet nozzle to be in butt joint with an external connected piece through the high-temperature protection ring, namely the air inlet nozzle is separated from the external connected piece, and in specific implementation, the external connected piece is closed under the action of an elastic reset mechanism of the external connected piece, so that a high-temperature shutoff function is realized, and the connecting body, the high-temperature protection ring and the connecting hand wheel have substantial characteristics and remarkable progress.
Drawings
Fig. 1 is a perspective view of the present disclosure.
Fig. 2 is a sectional view taken at a-a in fig. 1.
Fig. 3 is an exploded view of the present connector.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of examples to facilitate understanding by those skilled in the art:
as shown in fig. 1-3, a fuel connector with an over-flow protection and pressure stabilization function comprises a connecting body 1, wherein the connecting body 1 is provided with an air inlet cavity 2, an air outlet cavity 3, and a connecting channel 4 for connecting the air inlet cavity 2 and the air outlet cavity 3, the air inlet cavity 2 is provided with a first spring 21, a first piston 22 elastically pressed by the first spring 21, a first valve port 23, a push rod 24 with one end penetrating through the first valve port 23 and pressing against the first piston 22, a second spring 25 for elastically pressing against the push rod 24, and an air inlet nozzle 26 for pressing against the other end of the second spring 25 in sequence from the bottom to the outside, the push rod 24 is provided with a convex ring portion 241 on the periphery to facilitate the gradual reduction of an air flow space between the push rod 24 and the first valve port 23 when the push rod 24 moves towards the first piston 22, the air outlet cavity 3 is provided with a second piston 31, a second valve 3, and a connecting channel 4 for connecting the air, A second valve port 32 for sealing the second piston 31 when the outer end of the second piston is overflown, a third spring 33 for elastically pressing the second piston 31 to open the second valve port 32 when the second piston is reset, and an air outlet nozzle 34 for abutting against the other end of the third spring 33, wherein a through small hole 311 for direct up-and-down communication of the second piston 31 is arranged in the second piston 31, one end of the connecting channel 4 is communicated to the section of the air inlet cavity 2 between the inner bottom of the air inlet cavity 2 and the first valve port 23, and the other end is communicated to the section of the air outlet cavity 3 between the inner bottom of the air outlet cavity 3 and the second valve port 32.
As mentioned above, in the present invention, the first spring 21, the first piston 22, the first valve port 23, the plunger 24, the second spring 25, and the air inlet nozzle 26 are disposed in the air inlet chamber 2, when the external air pressure is too high, the push rod 24 moves towards the first piston 22 under the action of the air pressure, gradually reducing the air flow space between the convex ring part 241 and the first valve port 23, so that the flow rate through the first valve port 23 does not increase suddenly, and when the external intake air pressure decreases, the air inlet thrust on the plunger 24 is also reduced, at this time, under the elastic reset action of the first spring 21, the first spring 21 presses the plunger 24 through the first piston 22 to move reversely, so that the air flow space between the convex ring part 241 and the first valve port 23 is gradually increased, thereby ensuring that the flow passing through the first valve port 23 is not suddenly reduced, being beneficial to the pressure stabilization control and having substantive characteristics and progress; and the second piston 31, the second valve port 32, the third spring 33 and the air outlet nozzle 34 in the air outlet cavity 3 are arranged, so that when an overflow phenomenon occurs at the outer end of the second valve port 32, for example, a flame of a connected gas appliance is burnt too fast, the second piston 31 overcomes the elastic force of the third spring 33 under the action of a large negative pressure to seal the second valve port 32, and only the through small hole 311 is left to be ventilated, so that the flame of the gas appliance becomes a micro-fire, and an overflow protection function is realized, when the overflow phenomenon stops, for example, a user closes the gas appliance, so that the air pressure on two sides of the second valve port 32 is gradually balanced under the action of the through small hole 311, the second piston 31 automatically resets under the action of the third spring 33, reopens the second valve port 32, and prepares for the next round of work, and the air outlet cavity has substantial characteristics and progresses.
As described above, in the present embodiment, the protruding ring portion 241 has an outer wall surface gradually increasing from the first piston 22 toward the intake nozzle 26, so that the stem 24 can more easily pierce the air flow between the protruding ring portion 241 and the second valve port 32 and move toward the first piston 22 when the intake air flow increases.
As described above, in specific implementation, the first elastic sealing ring 221 for elastically pressing the inner sidewall of the intake chamber 2 is sleeved on the outer sidewall of the first piston 22, and the communication port between the connection channel 4 and the intake chamber 2 is farther from the inner bottom of the intake chamber 2 than the first elastic sealing ring 221.
As mentioned above, the first elastic sealing ring 221 is disposed on the outer side wall of the first piston 22, so that gas is not easy to enter the area between the first piston 22 and the bottom of the cavity of the intake cavity 2, and thus the elastic pressing of the first spring 21 against the first piston 22 is not affected.
As described above, in a specific implementation, the inner sidewall of the intake chamber 2 is provided with a first annular positioning step 201 and a second annular positioning step 202 which are sequentially away from the inner bottom direction of the intake chamber 2, the first annular positioning step 201 is provided with an annular member 203 in a positioning manner, the first valve port 23 is an annular opening of the annular member 203, and the intake nozzle 26 is positioned and installed at the second annular positioning step 202.
As described above, the arrangement of the first annular positioning step 201 and the annular member 203 according to the present embodiment facilitates the first valve port 23 to be arranged in the intake chamber 2 by assembling, and facilitates the first spring 21 and the first piston 22 to be loaded first and then the first valve port 23 to be arranged, which has substantial features and advantages.
As described above, in practical implementation, the second piston 31 is provided with a plurality of protruding portions 312 protruding toward the bottom of the cavity of the air outlet cavity 3, and a gap passage 313 passing from the outer side of the second piston 31 to the through small hole 311 is formed between adjacent protruding portions 312.
As described above, the arrangement of the plurality of protrusions 312 and the arrangement of the gap channel 313 on the second piston 31 prevent the through small holes 311 from tightly adhering to the bottom of the cavity of the air outlet cavity 3, so that the second piston 31 is always tightly adhered to the bottom of the cavity of the air outlet cavity 3 due to negative pressure, and on the other hand, the arrangement is beneficial to increasing the wind receiving space of the second piston 31, and the situation that the air flow entering the air outlet cavity 3 from the connecting channel 4 cannot blow the second piston 31 to move towards the second valve port 32 is avoided.
As described above, in practical implementation, the outer side of the protruding portion 312 is provided with the gradually changing wall surface 3121 whose profile gradually decreases toward the center of the second piston 31, so as to facilitate better force application of the second piston 31, so that the air flow entering the air outlet cavity 3 from the connecting channel 4 can better blow the second piston 31 toward the second valve port 32.
As described above, in the specific implementation, the air outlet nozzle 34 is connected with the air outlet cavity 3 through the screw thread, so that the elastic coefficient of the third spring 33 can be adjusted by rotating the air outlet nozzle 34, which is beneficial to conveniently adjusting different overflow thresholds according to actual conditions when connecting with a gas appliance, and the gas appliance has good applicability and substantial characteristics and progress.
As mentioned above, in practical application, the connecting channels 4 are several, and are distributed in the sidewall of the connector 1 in a circumferential array.
As mentioned above, in practical implementation, the outer side wall of the connector 1 is provided with the high temperature protection ring 5 for rapidly dissolving when the temperature is too high, and the connector 1 is externally provided with the connection hand wheel 6 for abutting against the high temperature protection ring 5 to butt the air inlet nozzle 26 to the external connected piece.
As described above, the connecting body 1, the high temperature protection ring 5, and the connecting handwheel 6 are arranged such that the high temperature protection ring 5 is rapidly dissolved when the temperature is too high, and the connecting handwheel 6 cannot pass through the high temperature protection ring 5 to butt the air inlet nozzle 26 to the external connected piece, that is, the air inlet nozzle 26 is separated from the external connected piece.
As described above, in the specific implementation, the inner side wall of the connecting handwheel 6 is provided with the internal thread 61 for the threaded connection with the external connected piece.
As mentioned above, the present application protects a fuel connector with the functions of over-current protection and pressure stabilization, and all technical solutions with the same or similar structures as the present application are all shown to fall within the protection scope of the present application.
Claims (10)
1. The fuel connector with the functions of super-flow protection and pressure stabilization is characterized by comprising a connecting body (1), wherein an air inlet cavity (2), an air outlet cavity (3) and a connecting channel (4) for connecting the air inlet cavity (2) and the air outlet cavity (3) are arranged in the connecting body (1), the air inlet cavity (2) is sequentially provided with a first spring (21), a first piston (22) elastically pressed by the first spring (21), a first valve port (23), a push rod (24) with one end penetrating through the first valve port (23) and then pressing the first piston (22), a second spring (25) for elastically pressing the push rod (24) and an air inlet nozzle (26) for pressing the other end of the second spring (25) from the bottom to the outside, the periphery of the push rod (24) is provided with a convex ring valve port convenient for gradually reducing an air flow space between the push rod (24) and the first piston (23) when the push rod (24) moves towards the first piston (22) A part (241), the air outlet cavity (3) is provided with a second piston (31), a second valve port (32) which can be sealed by the second piston (31) when the outer end of the air outlet cavity is overflown, a third spring (33) which is used for elastically pressing the second piston (31) so as to open the second valve port (32) when the air outlet cavity is reset, and an air outlet nozzle (34) which is used for propping against the other end of the third spring (33) in sequence from the bottom in the cavity to the outside, a through small hole (311) for direct up-and-down communication of the second piston (31) is arranged in the second piston (31), one end of the connecting channel (4) is communicated with the section of the air inlet cavity (2) between the bottom in the cavity of the air inlet cavity (2) and the first valve port (23), and the other end is communicated with the section of the air outlet cavity (3) between the bottom in the cavity of the air outlet cavity (3) and the second valve port (32).
2. The connector of claim 1, wherein the protruding ring portion (241) has an outer wall surface that gradually increases from the first piston (22) toward the intake nozzle (26).
3. The gas connector with the functions of super-flow protection and pressure stabilization according to claim 1, characterized in that a first elastic sealing ring (221) for elastically pressing against the inner side wall of the air inlet cavity (2) is sleeved on the outer side wall of the first piston (22), and a communication opening between the connecting channel (4) and the air inlet cavity (2) is farther away from the inner bottom of the air inlet cavity (2) than the first elastic sealing ring (221).
4. The fuel connector with the functions of super-flow protection and pressure stabilization according to claim 1, characterized in that a first annular positioning step (201) and a second annular positioning step (202) which are sequentially far away from the bottom direction in the cavity of the air inlet cavity (2) are arranged on the inner side wall of the air inlet cavity (2), an annular member (203) is positioned and installed on the first annular positioning step (201), the first valve port (23) is an annular opening of the annular member (203), and the air inlet nozzle (26) is positioned and installed at the second annular positioning step (202).
5. The connector of claim 1, wherein the second piston (31) is provided with a plurality of protrusions (312) protruding towards the bottom of the cavity of the outlet cavity (3), and a clearance channel (313) passing from the outer side of the second piston (31) to the through small hole (311) is formed between adjacent protrusions (312).
6. The connector of claim 5, wherein the outer side of the protrusion (312) is provided with a gradually-changing wall surface (3121) whose contour gradually decreases toward the center of the second piston (31).
7. The gas connector with the functions of super-flow protection and pressure stabilization as claimed in claim 1, characterized in that the outlet nozzle (34) is in threaded connection with the outlet cavity (3) so as to adjust the elastic coefficient of the third spring (33) by rotating the outlet nozzle (34).
8. The connector of claim 1, wherein the connecting channels (4) are arranged in a circumferential array in the side wall of the connector (1).
9. The gas connector with the functions of over-flow protection and pressure stabilization according to any one of claims 1 to 8, characterized in that the outer side wall of the connecting body (1) is provided with a high-temperature protection ring (5) for rapidly dissolving when the temperature is too high, and the connecting body (1) is externally provided with a connecting hand wheel (6) for abutting against the high-temperature protection ring (5) to butt the air inlet nozzle (26) to an external connected piece.
10. The gas connector with the functions of super-flow protection and pressure stabilization according to claim 9, characterized in that the inner side wall of the connecting hand wheel (6) is provided with an internal thread (61) for being in threaded connection with an external connected piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920441383.4U CN210164964U (en) | 2019-04-02 | 2019-04-02 | Take fuel connector of super current protection and steady voltage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920441383.4U CN210164964U (en) | 2019-04-02 | 2019-04-02 | Take fuel connector of super current protection and steady voltage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210164964U true CN210164964U (en) | 2020-03-20 |
Family
ID=69789771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920441383.4U Withdrawn - After Issue CN210164964U (en) | 2019-04-02 | 2019-04-02 | Take fuel connector of super current protection and steady voltage function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210164964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812609A (en) * | 2019-04-02 | 2019-05-28 | 广东长青（集团）股份有限公司 | A kind of combustion gas connector with pressure stabilizing and super stream defencive function |
-
2019
- 2019-04-02 CN CN201920441383.4U patent/CN210164964U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812609A (en) * | 2019-04-02 | 2019-05-28 | 广东长青（集团）股份有限公司 | A kind of combustion gas connector with pressure stabilizing and super stream defencive function |
| CN109812609B (en) * | 2019-04-02 | 2023-09-29 | 长青热能科技(中山)有限公司 | Gas connector with voltage stabilization and overcurrent protection functions |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200911 Address after: 528400 No. 42, South 1, Industrial Avenue, Xiaolan Town, Guangdong, Zhongshan Patentee after: Changqing thermal energy technology (Zhongshan) Co.,Ltd. Address before: No. 42, No. 42, Xiaolan Town, Guangdong, Guangdong Patentee before: GUANGDONG CHANT Group Inc. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200320 Effective date of abandoning: 20230929 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200320 Effective date of abandoning: 20230929 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |