CN209808605U - Nozzle for tooth rinsing device and tooth rinsing device thereof - Google Patents
Nozzle for tooth rinsing device and tooth rinsing device thereof Download PDFInfo
- Publication number
- CN209808605U CN209808605U CN201920041106.4U CN201920041106U CN209808605U CN 209808605 U CN209808605 U CN 209808605U CN 201920041106 U CN201920041106 U CN 201920041106U CN 209808605 U CN209808605 U CN 209808605U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- nozzle body
- housing
- air
- receiving chamber
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 50
- 238000011010 flushing procedure Methods 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 2
- 235000010585 Ammi visnaga Nutrition 0.000 description 1
- 244000153158 Ammi visnaga Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002324 mouth wash Substances 0.000 description 1
- 229940051866 mouthwash Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model relates to a wash tooth ware with nozzle and wash tooth ware thereof, include: a nozzle body; a housing defining an outlet therein, the housing being connected to one end of the nozzle body and defining with the nozzle body a receiving chamber in communication with air; the fluid for flushing the teeth enters the accommodating cavity through the nozzle body, is mixed with the air and then is sprayed out through the outlet.
Description
Technical Field
The utility model relates to a personal care field especially relates to a towards tooth ware and with towards tooth ware nozzle.
Background
The existing nozzle of the tooth flusher is generally of a single tubular structure, and only one porous channel exists in the nozzle, and is directly connected to the outlet of the tooth flusher or connected to the water outlet of the tooth flusher by a hose. Under the influence of the nozzle structure of the tooth flushing device, the nozzle can only spray water when spraying water, but cannot entrap air when spraying to form water-entrapped air spraying.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide a new tooth irrigator for solving the above problems.
According to the utility model discloses, a towards nozzle for tooth ware is provided, include: an outlet; a receiving chamber in fluid communication with the outlet; a flushing fluid passage fluidly coupled to the receiving chamber for ejecting flushing fluid from the outlet through the receiving chamber; and one end of the air channel is communicated with the outside atmosphere, and the other end of the air channel is communicated with the accommodating cavity so as to drive air to the accommodating cavity to be mixed with the tooth flushing fluid under the injection action of the tooth flushing fluid.
In one example, the nozzle for a dental irrigator includes a nozzle body and a housing connected to the nozzle body, wherein the outlet is defined to the housing and the receiving chamber is defined by the housing and the nozzle body.
Optionally, the housing and the nozzle body are fixedly connected in a detachable manner.
Optionally, the housing is fixedly connected to the nozzle body in a non-detachable manner.
Specifically, the shell and the nozzle body are fixedly connected in a welding manner.
More specifically, the housing and the nozzle body are fixedly connected in an ultrasonic welding manner.
In one example, the air passage is defined by the housing or by the nozzle body.
Preferably, the receiving chamber is located closer to the outlet of the nozzle than to the inlet of the nozzle. More preferably, the accommodation chamber is provided at an end side of the outlet of the nozzle.
In another example, the nozzle for the dental irrigator includes a nozzle body, and the outlet, the receiving chamber, the ram fluid passage, and the air passage are defined in the nozzle body.
According to the utility model discloses, still provide a towards tooth nozzle for ware, include: a nozzle body; a housing defining an outlet therein, the housing being connected to one end of the nozzle body and defining with the nozzle body a receiving chamber in communication with air; the fluid for flushing the teeth enters the accommodating cavity through the nozzle body, is mixed with the air and then is sprayed out through the outlet.
Specifically, one end of the nozzle body comprises an end face and a boss extending from the end face, and the boss defines a flow passage for the tooth flushing fluid.
In particular, the nozzle body defines a flow passage for the flushing fluid, the outlet of the housing being generally aligned with the flow passage.
In particular, the housing is substantially U-shaped in cross-section.
In one embodiment, the housing is removably fixedly attached to the nozzle body.
In another embodiment, the housing is fixedly connected to the nozzle body in a non-detachable manner.
Specifically, the shell and the nozzle body are fixedly connected in a welding manner. More specifically, the housing and the nozzle body are fixedly connected in an ultrasonic welding manner.
In one embodiment, the housing further defines a vent hole communicating with the outside to communicate the accommodating chamber with the air.
In another embodiment, the nozzle body further defines an air flow passage allowing air to flow to the receiving chamber to place the receiving chamber in communication with the air.
According to the utility model, the utility model also provides a tooth rinsing device comprising the nozzle for the tooth rinsing device.
According to the utility model discloses, still provide a towards tooth ware, include: a pressure providing assembly for providing pressure to the dental fluid; a nozzle body having a first end connected to the pressure providing assembly; a housing defining an outlet therein, the housing being connected to one end of the nozzle body and defining with the nozzle body a receiving chamber in communication with air; the fluid for flushing teeth enters the accommodating cavity through the pressure providing assembly and the nozzle body, is mixed with the air and then is sprayed out through the outlet.
Specifically, one end of the nozzle body comprises an end face and a boss extending from the end face, and the boss defines a flow passage for the tooth flushing fluid. More specifically, the outlet of the housing is generally aligned with the flow-through passage.
In one example, the housing is substantially U-shaped in cross-section.
Optionally, the housing is fixedly connected with the nozzle body in a detachable manner.
Optionally, the housing is fixedly connected to the nozzle body in a non-detachable manner. Specifically, the shell and the nozzle body are fixedly connected in a welding manner. More specifically, the housing and the nozzle body are fixedly connected in an ultrasonic welding manner.
In one example, the housing further defines a vent hole communicating with the outside to communicate the accommodating chamber with the air of the outside.
In another example, the dental irrigator further comprises another pressure providing assembly for providing pressure to the air and delivering the air to the receiving cavity. In particular, the further pressure providing assembly comprises a pumping assembly, the output of which communicates to the receiving chamber for pressurizing the air. More specifically, the pumping assembly includes at least a cylinder, a piston movably connected to the cylinder, and a motor driving the piston.
By configuring the receiving chamber to be in communication with air, the flushing fluid is mixed with air (e.g., air) or entrained with air as the flushing fluid is sprayed, such that the air-liquid mixture cavitates and enhances cleaning at the surface to be cleaned, such as a tooth surface, under pressure changes. For example, when teeth are cleaned, oxygen in the carried air enters the closed space, which is beneficial to killing anaerobic bacteria between teeth gaps, keeping oxygen supply between teeth and keeping healthy teeth.
Drawings
FIG. 1 is a view of a dental irrigator according to one embodiment of the present invention;
FIG. 2 is a perspective view at an angle of the nozzle structure for the dental irrigator according to the embodiment of the present invention shown in FIG. 1;
FIG. 3 is a perspective view of the nozzle structure for a dental irrigator according to the embodiment of the present invention shown in FIG. 1, at another angle; and
fig. 4 is another nozzle structure for a dental irrigator according to the embodiment of the present invention shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Fig. 1 shows a dental irrigator 100 according to an embodiment of the present invention. As shown in FIG. 1, the water toothpick 100 comprises a pressure providing assembly and a nozzle structure 200, the pressure providing assembly being enclosed by an outer annular housing 300, and therefore, the details of the structure are not shown. However, as will be readily appreciated by those skilled in the art, the pressure providing assembly may be any of a variety of known structures that are presently used in the dental irrigator 100 and are described in considerable detail in the prior art and will not be described in any further detail herein.
As one example, the pressure providing assembly may include a pumping assembly including a drive source and a piston cylinder driven thereby. Specifically, the driving source may include a motor, and the piston cylinder may include a cylinder body and a piston movably connected to the cylinder body, wherein the piston is reciprocally moved in the cylinder body by the driving of the motor. More specifically, the pressure providing assembly further includes a transmission assembly disposed between the motor and the piston. For example, the transmission assembly comprises a gear set and a connecting rod, wherein the input end of the gear set is connected with the output end of the motor, one end of the connecting rod is connected with the output end of the gear set to form a crank-slider structure, and the other end of the connecting rod is connected with the piston. The cylinder includes a passage in fluid communication with the cylinder, which passage can be filled with a dental rinse fluid, such as water or water with a cleaning agent (e.g., toothpaste, etc.) or a liquid oral cleaning agent (e.g., mouthwash), and the like, and pressurized in the cylinder by the action of the piston to form a pressurized dental rinse fluid that is sprayed through the nozzle arrangement onto a surface to be cleaned, such as a human tooth surface.
It will be readily appreciated by those of ordinary skill in the art that the above description of the pressure providing assembly is exemplary only and not limiting. In the present invention, the pressure providing assembly may be used as described herein as an example, and any existing pressure providing assembly may be used. Those skilled in the art will appreciate, upon referring to the exemplary description above, that other pressure providing assemblies can be used to practice the present invention.
Fig. 2 is a perspective view of the nozzle structure of the dental irrigator according to the embodiment of the present invention shown in fig. 1 at an angle. Fig. 3 is a perspective view of the nozzle structure of the dental irrigator according to the embodiment of the present invention shown in fig. 1 at another angle. Referring to fig. 2 and 3, the nozzle arrangement 200 includes a nozzle body 202 and a housing 204, wherein a first end of the nozzle body 202 is connected to the pressure providing assembly, the housing 204 defines an outlet 2041 thereon, the housing 204 is connected to a second end of the nozzle body 202 and defines with the nozzle body 202 a receiving chamber 206 in communication with air.
The second end of the nozzle body 202 includes an end face 2021 and a boss 2023 extending from the end face 2021, wherein the boss 2023 defines a flow passage for the flushing fluid, which flow passage is in fluid communication with the output end of the pressure providing assembly as previously described.
The housing 204 is shaped as a sleeve closed at one end and is generally U-shaped in cross-section. The open end of the housing 204 may be removably secured to the nozzle body 202. in one example, as shown, the open end of the housing 204 may have a connector pin extending outwardly therefrom and correspondingly, the end 2021 of the second end of the nozzle body 202 may have a positioning hole defined therein, such that the housing 204 may be coupled to the nozzle body 202 via the mating of the connector pin and the positioning hole. Those skilled in the art will readily appreciate that there are numerous configurations in the prior art that are adapted to each other to allow the housing 204 to be removably secured to the nozzle body 202, such as a threaded connection or the like, and will not be described in detail herein. It will also be readily appreciated that the housing 204 and nozzle body 202 are preferably lockable or lockable in use, taking into account fluid pressure, on the one hand, and that the housing 204 and nozzle body 202 are removable for cleaning or replacement, taking into account cleaning requirements, in a non-use condition. However, one of ordinary skill in the art will also readily appreciate that the housing 204 may also be non-removably secured to the nozzle body 202. For example, it may be fixed by welding; more specifically, for example, the fixing may be by means of ultrasonic welding. It will be appreciated that the housing 204 may also be secured to the nozzle body 202 by an adhesive bond.
In addition, in view of smoothness of fluid ejection, it is preferable that the outlet 2041 of the housing 204 and the flow channel of the boss 2023 are substantially aligned, or are centrally aligned or substantially aligned.
The following describes the receiving chamber 206 defined by the nozzle body 202 and the housing 204 in communication with the air.
The receiving cavity 206 is configured to be capable of communicating with air. In an example not shown, the housing 204 defines, in addition to the aforementioned outlet 2041, a vent hole communicating with the outside, which vent hole communicates the outside atmosphere with the accommodating chamber 206. Thus, in use, the dental fluid passes through the pressure supply assembly and the nozzle body 202 into the receiving chamber 206 and out through the outlet 2041 in the housing 204. The flushing fluid is pressurized by the pressure providing assembly so that it has a comparable spray velocity, wherein the pressure in the receiving chamber 206 is less (or forms a negative pressure zone) relative to the ambient pressure (atmospheric pressure) of the housing 204, so that air is more readily drawn into the receiving chamber 206 from the vent holes, and the air is entrained in the flushing fluid and ejected from the outlet 2041 of the housing 204 and onto the surface to be cleaned, such as the surface of a person's teeth.
In another example, not shown, the housing 204 may be provided without the aforementioned vent hole, and an air communication passage from the outside to the accommodating chamber 206 is defined in the nozzle body 202. Thus, the vent hole originally provided in the housing 204 in the foregoing example is provided to the nozzle body 202, and is substantially the same in principle, and therefore, the description thereof is omitted. It will also be readily appreciated by those skilled in the art that other examples are possible in which air flow passages are provided both in the housing 204 and in the nozzle body 202 to the environment.
In a further example, not shown, the air in the containing chamber is supplied by a dedicated air supply assembly. Since air and the dental fluid are both fluids in nature, the pressure providing assembly as initially described may also be used as an air providing assembly whose air supply is generally atmospheric air. It will be appreciated that if such a configuration is employed, the dental irrigator would need to include a first pressure providing assembly which provides a dental irrigation fluid, such as water, to the receiving chamber and a second pressure providing assembly which provides air, such as pressurized air, to the receiving chamber. The two types of fluids meet in the receiving chamber so that the flushing fluid entraps air when ejected.
It will also be appreciated that in fig. 2, 3 and subsequently 4, the receiving chamber 206 is disposed adjacent the end of the nozzle body, i.e., at the outlet end of the nozzle, however, one of ordinary skill in the art, with reference to the disclosure herein, will readily appreciate that the receiving chamber 206 may be disposed in the flow path of the flushing fluid. Preferably, it may be disposed on a side closer to the outlet of the nozzle than the inlet of the nozzle. More preferably, it may be provided on the outlet end side of the nozzle.
By configuring the receiving chamber 206 to be in communication with air, the flushing fluid is mixed with air (e.g., air) or entrained with air as the flushing fluid is sprayed, such that the air/liquid mixture cavitates under pressure changes at the surface to be cleaned, such as a tooth surface, to enhance cleaning. For example, when teeth are cleaned, oxygen in the carried air enters the closed space, which is beneficial to killing anaerobic bacteria between teeth gaps, keeping oxygen supply between teeth and keeping healthy teeth.
Referring to fig. 4, fig. 4 is a view illustrating a nozzle 400 for a dental irrigator according to the embodiment of the present invention shown in fig. 1.
A nozzle body 402 defining a receiving chamber 406 in communication with an outlet 404 of the nozzle 400;
a tooth flushing fluid passage 408 defined to the nozzle body 402 to spray tooth flushing fluid;
an air passage 410 defined to the nozzle body 402, having one end communicating with the outside atmosphere and the other end communicating with the receiving chamber 406, for delivering air to the receiving chamber 406 to be mixed with the dental fluid under the spraying action of the dental fluid.
Specifically, the fluid for rinsing teeth may be water, water mixed with a detergent, or a liquid detergent for oral use.
Specifically, the nozzle body 402 of the nozzle 400 may be unitary.
Depending on the structure of the nozzle body 402 of the nozzle 400, a person skilled in the art can design and machine the front end portion and the rear end portion of the nozzle body 402 of the nozzle 400 shown in fig. 4 separately, for example, into two parts, i.e., the nozzle 400 can still be realized by non-integral molding.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (32)
1. A nozzle for a dental irrigator, comprising:
an outlet;
a receiving chamber in fluid communication with the outlet;
a flushing fluid passage fluidly coupled to the receiving chamber for ejecting flushing fluid from the outlet through the receiving chamber;
and one end of the air channel is communicated with the outside atmosphere, and the other end of the air channel is communicated with the accommodating cavity so as to drive air to the accommodating cavity to be mixed with the tooth flushing fluid under the injection action of the tooth flushing fluid.
2. The nozzle of claim 1, comprising a nozzle body and a housing connected to said nozzle body, wherein said outlet is defined to said housing and said receiving chamber is defined by said housing and said nozzle body.
3. The nozzle of claim 2, wherein said housing is removably and fixedly attached to said nozzle body.
4. The nozzle of claim 2, wherein said housing is non-removably fixedly attached to said nozzle body.
5. The nozzle as claimed in claim 4, wherein the housing is fixedly connected to the nozzle body by welding.
6. The nozzle as claimed in claim 5, wherein the housing is fixedly connected to the nozzle body by ultrasonic welding.
7. The nozzle for a dental irrigator according to claim 2 wherein the air passage is defined by the housing or by the nozzle body.
8. The nozzle of claim 1, comprising a nozzle body, wherein the outlet, the receiving chamber, the ram fluid passage, and the air passage are defined in the nozzle body.
9. The nozzle of claim 1 wherein said receiving chamber is disposed closer to said outlet of said nozzle than to an inlet of said nozzle.
10. The nozzle for a dental irrigator according to claim 9 wherein said receiving chamber is provided at an end side of said outlet of said nozzle.
11. A nozzle for a dental irrigator, comprising:
a nozzle body;
a housing defining an outlet therein, the housing being connected to one end of the nozzle body and defining with the nozzle body a receiving chamber in communication with air;
the fluid for flushing the teeth enters the accommodating cavity through the nozzle body, is mixed with the air and then is sprayed out through the outlet.
12. The nozzle of claim 11 wherein said nozzle body includes an end face and a boss extending from said end face, said boss defining said flow passage for said dental fluid.
13. The nozzle of claim 11 wherein said nozzle body defines a flow passage for said dental fluid, said outlet of said housing being generally aligned with said flow passage.
14. The nozzle of claim 11 wherein said housing is substantially U-shaped in cross-section.
15. The nozzle of claim 11 wherein said housing is removably fixedly attached to said nozzle body.
16. The nozzle of claim 11 wherein said housing is fixedly attached to said nozzle body in a non-removable manner.
17. The nozzle as claimed in claim 16, wherein said housing is fixedly connected to said nozzle body by welding.
18. The nozzle of claim 17 wherein said housing is fixedly attached to said nozzle body by ultrasonic welding.
19. The nozzle of claim 11 wherein said housing further defines an air vent in communication with the exterior to place said chamber in communication with air.
20. The nozzle of claim 11 wherein said nozzle body further defines an air flow passage for allowing air to flow to said receiving chamber to place said receiving chamber in air communication.
21. A dental irrigator, comprising: a nozzle for a dental irrigator according to any one of claims 1 to 20.
22. A dental irrigator, comprising:
a pressure providing assembly for providing pressure to the dental fluid;
a nozzle body having a first end connected to the pressure providing assembly;
a housing defining an outlet therein, the housing being connected to one end of the nozzle body and defining with the nozzle body a receiving chamber in communication with air;
the fluid for flushing teeth enters the accommodating cavity through the pressure providing assembly and the nozzle body, is mixed with the air and then is sprayed out through the outlet.
23. The dental irrigator of claim 22 wherein one end of said nozzle body includes an end face and a boss extending from said end face, said boss defining a flow passage for said dental fluid.
24. The dental irrigator of claim 23 wherein the outlet of the housing is generally aligned with the flow channel.
25. The dental irrigator of claim 23 wherein said housing is substantially U-shaped in cross-section.
26. The dental irrigator of claim 22 wherein said housing is removably fixedly connected to said nozzle body.
27. The dental irrigator of claim 22 wherein said housing is fixedly attached to said nozzle body in a non-removable manner.
28. The dental irrigator of claim 22 wherein said housing further defines a vent in communication with the outside to place said receiving chamber in communication with air.
29. The dental irrigator of claim 22 wherein the nozzle body further defines an air flow passage for allowing air to flow to the receiving chamber to place the receiving chamber in communication with the air.
30. The dental irrigator of claim 22 further comprising another pressure providing assembly for providing pressure to air and delivering said air to said receiving cavity.
31. The dental irrigator of claim 30 wherein the other pressure providing assembly includes a pumping assembly having an output end communicating to the receiving chamber for pressurizing the air.
32. The dental irrigator of claim 31 wherein said pumping assembly includes at least a cylinder, a piston movably connected to said cylinder, and a motor for driving said piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920041106.4U CN209808605U (en) | 2019-01-10 | 2019-01-10 | Nozzle for tooth rinsing device and tooth rinsing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920041106.4U CN209808605U (en) | 2019-01-10 | 2019-01-10 | Nozzle for tooth rinsing device and tooth rinsing device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209808605U true CN209808605U (en) | 2019-12-20 |
Family
ID=68870933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920041106.4U Expired - Fee Related CN209808605U (en) | 2019-01-10 | 2019-01-10 | Nozzle for tooth rinsing device and tooth rinsing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209808605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806018A (en) * | 2019-01-10 | 2019-05-28 | 上海携福电器有限公司 | Tooth flusher nozzle and its tooth flusher |
-
2019
- 2019-01-10 CN CN201920041106.4U patent/CN209808605U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806018A (en) * | 2019-01-10 | 2019-05-28 | 上海携福电器有限公司 | Tooth flusher nozzle and its tooth flusher |
| CN109806018B (en) * | 2019-01-10 | 2021-04-20 | 上海携福电器有限公司 | Nozzle for tooth rinsing device and tooth rinsing device thereof |
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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: 20191220 Termination date: 20210110 |