CN211033585U - Wine stopper capable of being vacuumized - Google Patents
Wine stopper capable of being vacuumized Download PDFInfo
- Publication number
- CN211033585U CN211033585U CN201920934633.8U CN201920934633U CN211033585U CN 211033585 U CN211033585 U CN 211033585U CN 201920934633 U CN201920934633 U CN 201920934633U CN 211033585 U CN211033585 U CN 211033585U
- Authority
- CN
- China
- Prior art keywords
- vacuum pump
- base
- cavity
- wine
- bottle
- 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.)
- Active
Links
- 235000014101 wine Nutrition 0.000 title claims abstract description 65
- 235000013361 beverage Nutrition 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000741 silica gel Substances 0.000 claims description 15
- 229910002027 silica gel Inorganic materials 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 9
- 235000020095 red wine Nutrition 0.000 abstract description 10
- 230000005611 electricity Effects 0.000 abstract description 3
- 229920001296 polysiloxane Polymers 0.000 description 8
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000018553 tannin Nutrition 0.000 description 2
- 229920001864 tannin Polymers 0.000 description 2
- 239000001648 tannin Substances 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Landscapes
- Closures For Containers (AREA)
Abstract
The utility model provides a but evacuation wine stopper, including can cover locate the base in the beverage bottle outside with the base encloses the shell that closes the formation cavity, the base deviates from one side of shell is provided with can block and fills in the intraoral boss of bottleneck, still including set up in vacuum pump in power and the extractable beverage bottle in the cavity, in be provided with the through-hole that can communicate vacuum pump and bottle on the boss, in be provided with the detection subassembly of vacuum in the detectable beverage bottle in the cavity, detection subassembly with the vacuum pump electricity is connected. This wine stopper is provided with the vacuum pump in the cavity that base and shell enclose, can extract the air in the beverage bottle through the vacuum pump to guarantee the vacuum in the beverage bottle, and can detect the vacuum in the beverage bottle through detecting element, and then whether control vacuum works, it is more convenient, can guarantee the interior red wine quality of beverage bottle all the time.
Description
Technical Field
The utility model relates to a wine stopper capable of being vacuumized.
Background
The red wine bottle stopper is mostly a wooden soft stopper, when people drink red wine, the whole wine can not be drunk, and the red wine is oxidized after contacting air, so that tannin in the red wine is converted into tannin, the taste of the red wine is poor, and the problem of preservation of the residual red wine exists. The existing preservation method is only to press the original wooden plug on the bottle mouth, although the air in the outer boundary is difficult to enter the bottle in a short time, the air in the sealed bottle can not be discharged, and the taste and quality of the red wine are still influenced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a vacuum-pumping wine stopper can solve prior art's partial defect at least.
The embodiment of the utility model relates to a but evacuation wine stopper, including can cover locate the base in the beverage bottle outside with the base encloses the shell that closes the formation cavity, the base deviates from one side of shell is provided with can block and fill up in the intraoral boss of bottleneck, still including set up in vacuum pump in power and the extractable beverage bottle in the cavity, in be provided with the through-hole that can communicate in vacuum pump and the bottle on the boss, in be provided with the detection components of vacuum in the detectable beverage bottle in the cavity, detection components with the vacuum pump electricity is connected.
As one embodiment, the detection assembly includes a silicone disc installed on the base and a first micro-touch switch for controlling the on-off of a control circuit of the vacuum pump, the silicone disc and the first micro-touch switch are both located in the cavity, the first micro-touch switch presses the silicone disc, a concave cavity capable of being communicated with a wine bottle is arranged at a position of the base corresponding to the first micro-touch switch, and the silicone disc seals a port of the concave cavity facing the cavity.
As an embodiment, a second micro-contact switch is further disposed on the base, the second micro-contact switch has a contact that can be pressed by the end edge of the bottle mouth to close the control circuit of the vacuum pump, and the second micro-contact switch is electrically connected in series with the detection component.
As an embodiment, the second micro-contact switch includes a guide pillar penetrating through the base and movable relative to the base, and a switch unit abutted by the guide pillar to control the vacuum pump control circuit to be turned on and off, the contact is an end portion of the guide pillar extending into the base, and an end of the guide pillar away from the contact abuts against the switch unit.
In one embodiment, an elastic member is sleeved on the guide post, and the elastic member is located in the cavity and clamped between the switch unit and the flange of the guide post.
As an embodiment, the through hole has a port tapering in a direction away from the housing, the port being provided with a sealing plug.
As one embodiment, the vacuum pump further comprises an anti-tilt switch connected in series with the vacuum pump control circuit.
As one embodiment, a bottle mouth silica gel which can be inserted into the bottle mouth is sleeved on the boss.
The vacuum pump control device further comprises an indicator light capable of indicating whether the vacuum pump works or not, and the indicator light is electrically connected with the vacuum pump.
As one embodiment, a light guide column is arranged on one side of the shell far away from the base, and the indicator light is positioned in the cavity and is opposite to the light guide column; or the indicating lamp is positioned in the cavity, the shell is a light-transmitting shell, and a laser mark is arranged at the position, right opposite to the indicating lamp, of the light-transmitting shell.
The embodiment of the utility model provides a following beneficial effect has at least:
the utility model provides a wine stopper, be provided with the vacuum pump in the cavity that base and shell enclose, can extract the air in the beverage bottle through the vacuum pump, in order to guarantee the vacuum in the beverage bottle, and be provided with the determine module in above-mentioned cavity, can detect the vacuum in the beverage bottle through the determine module, for example when the determine module detects the unsatisfied requirement of vacuum in the beverage bottle, the air in the base beverage bottle can be extracted in the work of vacuum pump, and when satisfying the vacuum requirement, then the vacuum pump stop work, whole process all is automatic completion of wine stopper, it is more convenient, can guarantee the interior red wine quality of beverage bottle all the time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a sectional view of a wine stopper capable of being vacuumized according to an embodiment of the present invention;
figure 2 is an exploded view of the evacuable wine stopper of figure 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides an evacuable wine stopper, including a base 1 and a shell 2, wherein the base 1 can cover the outside of a bottle mouth of a wine bottle, the shell 2 is installed on the base 1 and encloses with the base 1 to form a cavity 3, usually, the shell 2 is connected with the base 1 by a buckle, specifically, a buckle 11 is provided on the outer circumferential surface of the base 1, the base 1 has a partial structure of the buckle 11 extending into the shell 2 and the buckle 11 is buckled with a groove on the shell 2 to form a detachable connection between the base 1 and the shell 2, a boss 12 is provided on one side of the base 1 departing from the shell 2, when the base 1 is covered on the wine bottle, the boss 12 of the base 1 extends into the bottle mouth and is tightly clamped with the inner wall of the bottle mouth, a bottle mouth silica gel 121 can be sleeved on the boss 12, a thread is provided on the surface of the bottle mouth 121, when the boss 12 is inserted into the bottle mouth, the wine stopper also comprises a power supply and a vacuum pump 31, wherein the power supply and the vacuum pump 31 are both positioned in the cavity 3, a battery box 32 is also arranged in the cavity 3, the vacuum pump 31 is arranged on the battery box 32, two mounting holes are arranged on the vacuum pump 31, the power supply is two batteries of No. 7, the two batteries are respectively positioned in the two mounting holes, a battery spring 321 and a battery piece 322 are respectively arranged at two ends of the battery box 32, wherein the two battery springs 321 correspond to the two mounting holes one by one, the battery piece 321 is one and has two electrode positions, two electrodes correspond to the two mounting holes one by one, a PCBA board 33 is also arranged on the battery box 32, a control circuit of the vacuum pump 31 is arranged on the PCBA board 33, the vacuum pump 31 and the power supply are both electrically connected to the control circuit, a through hole 122 is arranged on the boss 12, when filling in the bottleneck with the boss 12 of wine stopper, this through-hole 122 and beverage bottle intercommunication, vacuum pump 31 can be through the air in this through-hole 122 extraction beverage bottle to reach the purpose of vacuum degree in the control beverage bottle, be provided with detection module 34 in addition in cavity 3, detection module 34 passes through control circuit electricity and connects vacuum pump 31, and detection module 34 can detect the vacuum degree in the beverage bottle, and then can reach the purpose of control vacuum pump 31 work. The utility model discloses in, the wine stopper is from taking the evacuation function, when being applied to the beverage bottle with the wine stopper on, can judge the vacuum in the beverage bottle through determine module 34, and when the vacuum reaches the settlement requirement in the bottle, then vacuum pump 31 is out of work, and when detecting in the bottle vacuum does not reach the settlement requirement, then vacuum pump 31 begins to extract the interior air of bottle until reaching the requirement. The whole process is automatically completed, the operation is more convenient, and particularly, the wine bottle is not drunk after being opened, and the vacuum degree in the wine bottle can be automatically controlled through the wine plug so as to ensure the taste of the rest red wine. Usually, the through hole 122 has a port (taper hole) tapered along a direction away from the housing 2, and a sealing plug is arranged in the port, the sealing plug is a sealing silica gel 123, when a set vacuum degree is reached in the wine bottle, the wine plug stops vacuumizing, at this time, the vacuum in the wine bottle is kept by the sealing silica gel 123 in a sealing manner, and because the bottle is in a vacuum state, a suction force is always generated to keep the sealing silica gel 123 always pressed on the taper hole position of the base 1 to keep a good sealing effect.
Referring to fig. 1 and 2, the structure of the detailed detection assembly 34 includes a silicone disc 341 mounted on the base 1 and a first micro-contact switch 342 for controlling the on/off of the control circuit, the silicone disc 341 and the first micro-contact switch 342 are both located in the chamber 3, the first micro-contact switch 342 presses against the silicone disc 341, a concave cavity capable of being communicated with a wine bottle is provided at a position of the base 1 corresponding to the first micro-contact switch 342, and the silicone disc 341 seals a port of the concave cavity facing the chamber 3. In this embodiment, the structure of the detection assembly 34 is detailed, the micro-touch switch is adopted to control the on-off of the control circuit of the vacuum pump 31, one side of the silica gel disc 341 corresponds to the space in the bottle, the other side is the space in the chamber 3, when the silica gel plate 341 abuts against the first micro-touch switch 342, the control circuit is a passage, the vacuum pump 31 works to pump the air in the wine bottle, and the air pressure in the wine bottle is gradually reduced during the pumping process, namely, the air pressure on one side of the silica gel disc 341 is gradually reduced, and the pressure on one side is kept unchanged, so that the silica gel disc 341 is gradually recessed into the cavity under the action of the air pressure on the side of the cavity 3 corresponding to the cavity, the abutting pressure of the silica gel disc 341 on the first micro-contact switch 342 is gradually reduced, when the acting force of the vacuum pump and the vacuum bottle is reduced to a certain degree or directly does not exist, the first micro-touch switch 342 controls the control circuit of the vacuum pump 31 to be switched off, the vacuum pump 31 stops working, and the vacuum degree in the wine bottle reaches the set requirement at the moment.
In another embodiment, a second micro-contact switch 35 is further disposed on the base 1, the second micro-contact switch 35 has a contact 353, the contact 353 can also control the on/off of the control circuit, and is electrically connected in series with the first micro-contact switch 342 of the detection component 34, and when the wine is placed on the wine bottle, the end edge of the bottle mouth can abut against the contact 353, so as to close the control circuit through the contact 353. In this embodiment, the control circuit is kept open when the second micro-contact switch 35 and the first micro-contact switch 342 are closed at the same time, wherein one open state indicates that the control circuit is open, when the boss 12 of the base 1 is inserted into the bottle mouth, the end edge of the bottle mouth abuts against the contact 353, the second micro-contact switch 35 is open, generally speaking, the air pressure in the wine bottle is the same as the external air pressure, and the first micro-contact switch 342 is also kept open, so that the vacuum pump 31 starts to operate.
In an embodiment, the second micro-contact switch 35 further includes a guide post 351 and a switch unit 352, the guide post 351 penetrates through the base 1 and can move relative to the base 1, the switch unit 352 is abutted by the guide post 351 to control on/off of a control circuit of the vacuum pump 31, the switch unit 352 is located on the PCBA board 33, the contact 353 is an end portion of the guide post 351 extending into the inner side of the base 1, and an end of the guide post 351 away from the contact 353 abuts against the switch unit 352. In this embodiment, the end edge of the bottle opening can abut against the guide post 351 to move linearly, and then the guide post 351 abuts against the switch unit 352, at this time, the switch unit 352 is in a closed state, and when the wine stopper is taken down from the wine bottle, the guide post 351 falls back, the switch unit 352 is disconnected, even if the detection component 34 detects that the air pressure towards the side of the bottle opening is higher, the vacuum pump 31 cannot work, and the vacuum pump 31 can be prevented from working mistakenly. Further, an elastic member 354 is further sleeved on the guide post 351, a flange 355 is disposed on one side of the guide post 351, which is located on the contact 353, the elastic member 354 is located in the cavity 3 and is clamped between the switch unit 352 and the flange 355, the elastic member 354 is usually a return spring, when the guide post 351 abuts against the switch assembly, the return spring is compressed, that is, when the wine stopper is mounted on the wine bottle, the return spring compresses, and when the wine stopper is pulled out from the wine bottle, the return spring pushes the flange 355, and the flange 355 drives the entire guide post 351 to move towards the inner side of the base 1, so that the switch assembly is turned off.
Referring to fig. 2, in another embodiment of the present invention, the wine stopper further comprises an anti-tilt switch 331, and the anti-tilt switch 331 is also connected in series to the control circuit of the vacuum pump 31 and mounted on the PCBA board 33. The anti-tilt switch 331 can detect the tilt angle of the wine bottle, if after the wine stopper is inserted into the bottle mouth, the wine bottle is tilted to a certain degree, if the wine stopper continuously works, the wine in the wine bottle can be drawn out, and then the wine stopper can be damaged, in order to avoid the wine stopper continuously working after the above possible situation occurs, after the wine bottle which is plugged with the wine stopper is tilted to a certain angle, the wine stopper automatically stops evacuation work, and the tilt angle can be smaller than 20 degrees or smaller than 45 degrees.
Further, the wine stopper further includes an indicator light 332, which may be a L ED indicator light 332, the indicator light 332 is electrically connected to the vacuum pump 31, and whether the vacuum pump 31 is operating or not can be determined by the indicator light 332, for example, when the vacuum pump 31 is operating, the indicator light 332 is blue, and when the vacuum pump 31 is not operating, the indicator light 332 is green, a light guiding column 21 is disposed on a side of the housing 2 away from the base 1, the indicator light 332 is located in the chamber 3 and is directed to the light guiding column 21, at this time, the indicator light 332 is also mounted on the PCBA board 33, light emitted by the indicator light 332 can be guided out through the light guiding column 21 to facilitate observation by a user, and the indicator light 332 is protected inside the housing 2, while in another embodiment, the indicator light 332 is also located in the housing 2, the housing 2 is a transparent housing, which may be made of a transparent material or a translucent material, and the surface of the housing 2 is treated by electroplating or spraying rubber oil or ordinary oil, and the housing 2 is treated by the indicator light mark L, and the indicator light acts as a laser mark L.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a but evacuation wine stopper, including can cover the base of locating the beverage bottle outside and with the base encloses the shell that closes formation cavity, the base deviates from one side of shell is provided with can block in intraoral boss of bottleneck, its characterized in that: the wine bottle vacuum detection device is characterized by also comprising a power supply arranged in the cavity and a vacuum pump capable of extracting vacuum in the wine bottle, wherein a through hole capable of communicating the vacuum pump and the bottle is formed in the boss, a detection assembly capable of detecting the vacuum degree in the wine bottle is arranged in the cavity, and the detection assembly is electrically connected with the vacuum pump; the detection component comprises a silica gel disc arranged on the base and a first micro-touch switch for controlling the on-off of a control circuit of the vacuum pump, the silica gel disc and the first micro-touch switch are both positioned in the cavity, the first micro-touch switch is abutted against the silica gel disc, the base corresponds to the position of the first micro-touch switch, a cavity which can be communicated with a wine bottle is arranged, and the silica gel disc is sealed, and the cavity faces the port of the cavity.
2. The evacuable wine stopper of claim 1, wherein: the base is also provided with a second micro-touch switch, the second micro-touch switch is provided with a contact which can be propped against the end edge of the bottle mouth to close the control circuit of the vacuum pump, and the second micro-touch switch is electrically connected with the detection assembly in series.
3. The evacuable wine stopper of claim 2, wherein: the second micro-contact switch comprises a guide post which penetrates through the base and can move relative to the base and a switch unit which is abutted by the guide post to control the on-off of the vacuum pump control circuit, the contact is an end part of the guide post which extends into the inner side of the base, and one end of the guide post, which is far away from the contact, is abutted to the switch unit.
4. The evacuable wine stopper of claim 3, wherein: an elastic piece is sleeved on the guide post, is located in the cavity and is clamped between the switch unit and the flange of the guide post.
5. The evacuable wine stopper of claim 1, wherein: the through-hole has along keeping away from the direction of shell is the port of convergent, the port department is provided with the sealing plug.
6. The evacuable wine stopper of claim 1, wherein: the vacuum pump control circuit also comprises an anti-tilt switch connected in series on the vacuum pump control circuit.
7. The evacuable wine stopper of claim 1, wherein: and a bottleneck silica gel which can extend into the bottleneck is sleeved on the boss.
8. The evacuable wine stopper of claim 1, wherein: the vacuum pump also comprises an indicator light which can display whether the vacuum pump works or not, and the indicator light is electrically connected with the vacuum pump.
9. The evacuable wine stopper of claim 8, wherein: a light guide column is arranged on one side of the shell, which is far away from the base, and the indicator light is positioned in the cavity and is opposite to the light guide column; or the indicating lamp is positioned in the cavity, the shell is a light-transmitting shell, and a laser mark is arranged at the position, right opposite to the indicating lamp, of the light-transmitting shell.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920934633.8U CN211033585U (en) | 2019-06-20 | 2019-06-20 | Wine stopper capable of being vacuumized |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920934633.8U CN211033585U (en) | 2019-06-20 | 2019-06-20 | Wine stopper capable of being vacuumized |
Publications (1)
Publication Number | Publication Date |
---|---|
CN211033585U true CN211033585U (en) | 2020-07-17 |
Family
ID=71536281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201920934633.8U Active CN211033585U (en) | 2019-06-20 | 2019-06-20 | Wine stopper capable of being vacuumized |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN211033585U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110194320A (en) * | 2019-06-20 | 2019-09-03 | 刘丹萍 | Vacuum-pumping wine stopper |
US12012263B2 (en) | 2019-06-20 | 2024-06-18 | Danping Liu | Wine stopper |
-
2019
- 2019-06-20 CN CN201920934633.8U patent/CN211033585U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110194320A (en) * | 2019-06-20 | 2019-09-03 | 刘丹萍 | Vacuum-pumping wine stopper |
CN110194320B (en) * | 2019-06-20 | 2024-03-29 | 刘丹萍 | Wine plug capable of vacuumizing |
US12012263B2 (en) | 2019-06-20 | 2024-06-18 | Danping Liu | Wine stopper |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN211033585U (en) | Wine stopper capable of being vacuumized | |
JP2019508211A (en) | Vacuum vessel, system and method | |
WO2020192583A1 (en) | A bowl cover, a bowl, and a food processor | |
CN111114970B (en) | Automatic vacuumizing food preservation device and using method thereof | |
CN110194320B (en) | Wine plug capable of vacuumizing | |
US12012263B2 (en) | Wine stopper | |
CN211811105U (en) | Automatic vacuum storage container of evacuation | |
CN219331426U (en) | Vacuum juicer with automatic leakage-proof function | |
CN210417681U (en) | Vacuum tank | |
CN215827375U (en) | Wine stopper capable of being vacuumized | |
CN212774636U (en) | Electric vacuum extractor capable of detecting air pressure | |
CN209518751U (en) | A kind of capsule-type beverage preparing equipment | |
CN211767675U (en) | Vacuum-pumping bottle stopper | |
CN108438317B (en) | Fresh-keeping device of drinks | |
CN214268718U (en) | Vacuum fresh-keeping cover | |
KR200332132Y1 (en) | Vacuum container | |
US20220402678A1 (en) | Vacuum-pumping bottle stopper | |
CN220905445U (en) | Electric vacuum extractor | |
CN217401087U (en) | Mechanical knob type pressure relief electric vacuum pumping device | |
CN216867266U (en) | Vacuum chuck | |
CN215795761U (en) | Vacuum storage | |
CN209852876U (en) | Air extractor, bottle plug and equipment for quality guarantee of bottled container | |
CN221252450U (en) | Thermal insulation fresh-keeping box | |
CN218288839U (en) | Bottle cap, vacuum liquid storage bottle and vacuum liquid storage device | |
CN220890433U (en) | Electric vacuum pumping device with self-disengaging structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20201102 Address after: Room 202, 2 / F, 3 factory building, paibang brick factory industrial zone, 428 Silian Road, Silian community, Henggang street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen city is a Wine Co.,Ltd. Address before: 518000 talent market building, Baoan North Road, Shenzhen, Guangdong, Luohu District Patentee before: Liu Danping |
|
TR01 | Transfer of patent right |