CN202561054U - Seal ring for combined bearing pressure-bearing ring - Google Patents
Seal ring for combined bearing pressure-bearing ring Download PDFInfo
- Publication number
- CN202561054U CN202561054U CN2012200270825U CN201220027082U CN202561054U CN 202561054 U CN202561054 U CN 202561054U CN 2012200270825 U CN2012200270825 U CN 2012200270825U CN 201220027082 U CN201220027082 U CN 201220027082U CN 202561054 U CN202561054 U CN 202561054U
- Authority
- CN
- China
- Prior art keywords
- bearing
- ring
- bearing ring
- seal
- composite
- 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
- 239000002184 metal Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 52
- 238000005987 sulfurization reaction Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 55
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 238000004073 vulcanization Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 17
- 229920003023 plastic Polymers 0.000 description 17
- 239000000463 material Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 5
- 229920006362 Teflon® Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000003044 adaptive effect Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Sealing Of Bearings (AREA)
Abstract
The utility model discloses a seal ring for a combined bearing pressure-bearing ring, and the seal ring consists of a rubber body with a sealing lip, a metal framework, a combined bearing pressure-bearing ring, and a spring, wherein the combined bearing pressure-bearing ring is arranged between the metal framework and the sealing lip, the rubber body and the metal framework are bonded together and integrated inside the mould though vulcanization, and the rubber body is provided with the sealing lip which is characterized by certain interference between the sealing lip and the shaft. The sealing lip is formed through a one-step mould pressing process by using a mould. The seal ring for the combined bearing pressure-bearing ring in the utility model is advantaged by extremely strong high pressure-resisting capability, excellent and stable extrusion-resisting capability, favorable friction-lubricating property and heat-radiating property, good eccentricity-adapting capability, and extremely long service life.
Description
Technical field
The utility model is that a kind of assembling type partly exposes skeleton composite bearing bearing ring seal ring.It is the high-pressure sealing ring of the sealing between a kind of axle, piston and cylinder body that is applicable to reciprocating axle, rotatablely moves.
Background technique
Hydraulic system is widely used in machinery and the automation equipment, like engineering machinery, mining machinery, farm machinery, chemical machinery, boats and ships and automobile hydraulic power steering apparatus etc.Hydraulic system internal work pressure is everlasting tens between the hundreds of barometric pressure; Its operation and reliability of operation depend on intrasystem Sealing to a great extent; Therefore, it is just very important to have the effect of high-pressure seal ring in hydraulic system of good seal performance.
The high-pressure seal ring (seeing shown in the accompanying drawing 1) that early occurs is made up of metal frame, spring, the rubber body etc. that has seal lip, and it is an integral body through vulcanizing bonding that metal frame and rubber body are utilized mould; Mainly there is following problem in this constructed products: in order to improve the high-voltage resistance capability of sealing; Common measure is with sealing waist shorten length (L1 shortens to L2 among the figure), increases waist thickness T, perhaps improves the hardness of rubber material; But after these measures are implemented; Though the voltage endurance capability of seal ring is necessarily promoted, the problem of bringing is significantly to have reduced the eccentric adaptive capacity of seal ring, has increased the friction torque of seal ring; In order to improve the anti-plasticating capacity of Sealing, needing increases a baffle plate in sealing non-tight side, and this makes assembling become complicated again.Even but after taking above-mentioned measure, extrude the gap because the barrier material insufficient strength exists simultaneously all the time, the sealing voltage endurance capability of this structure and anti-plasticating capacity are still not high, very easily puncture broken invalid when under high pressure moving.
Use more high-pressure seal ring (seeing shown in the accompanying drawing 2-1,2-2) mainly to be made up of metal frame, plastics bearing ring, spring, the rubber body etc. that has seal lip in the existing technology, it is an integral body that metal frame vulcanizes bonding with the ring-shaped rubber body; The plastics bearing ring during seal operation of this structure, tightly is attached to the surface of axle through plastic hoop under the effect of radial force between metal frame and sealing lip, eliminate radial clearance with this, thereby prevents that sealing envelope waist from being extruded by hydraulic coupling vertically.But in fact, the sealing of this structural design is sealed up for safekeeping in following several problems:
1, because the material of general bearing ring is low-intensity plastics (like nylon material, polyethylene etc.), so intensity and the adaptive temperature scope is all not high and wear resistance is relatively poor.When hydraulic coupling reached the plastics bearing ring and can not bear, oil sealing promptly can leak because of the destruction of bearing ring, and this structure oil sealing of evidence bearing ring promptly can occur and destroy and leak about pressure 20MPa.。
When 2, oil sealing is worked; Because plastic hoop tightly is attached to the surface of axle under the effect of radial force; Kinetic friction will take place with the axle surface in plastics bearing ring all the time, in view of the friction pair of plastics and metal is bigger, therefore constantly produce heat; This will strengthen oil seal lip < p.v>value, thereby quicken the damaging inefficacy speed and the aging speed of lip.
3, after seal ring received action of hydraulic force, the plastics bearing ring just can be close to the surface of axle.When axle was done back and forth or rotatablely moved, the plastics bearing ring just can be by wearing and tearing gradually, and along with the increase of service time, the radial thickness of bearing ring can be more and more littler, the bigger radial clearance of final generation.Thereby cause being extruded the gap of sealing lip between plastics bearing ring and axle.
4, because the intensity of plastics bearing ring is low; Therefore this structure oil sealing acts directly on the plastics bearing ring for fear of hydraulic coupling; Just can only shorten the waist length L of sealing, cause seal lip very poor, increase the possibility of sealing medium seepage the tracking tracing ability of off-centre.
5, shown in the accompanying drawing 2, because the plastic support ring of sealing generally all directly packs into from the sealed outer end face, if do not make suitable axial restraint when installing, in case sealed pressure, the plastic support ring will be rushed out, and the sealing waist also can be extruded.Therefore, when using this type of sealing, must must add the axial baffle that an endoporus directly is slightly larger than axle, this will increase cost of production, strengthens installing space.
The model utility content
To above-mentioned deficiency; The utility model provides a kind of composite bearing bearing ring seal ring (seeing shown in the accompanying drawing 3), and this shaft sealing has following characteristics: high high-voltage resistance capability, excellence and stable anti-plasticating capacity, good friction, lubrication characteristic and thermal diffusivity, good eccentric adaptive capacity and extremely long working life.
The composite bearing bearing ring seal ring that the utility model provides comprises rubber body, metal frame, composite bearing bearing ring, the spring that has seal lip, and said composite bearing bearing ring is arranged between metal frame and the sealing lip; Said rubber body and metal frame are an integral body through vulcanizing bonding in mould; Said rubber body is provided with the seal lip that certain magnitude of interference is arranged with axle, and said seal lip forms through the disposable mold pressing of mould; Said composite bearing bearing ring utilizes mould when sulfuration, to be embossed between metal frame and the sealing lip; But the two is not sticked together with this; Perhaps after the sulfuration of metal frame and rubber body is an integral body, the composite bearing bearing ring is fitted between metal frame and the seal lip.
Further; Said composite bearing bearing ring is formed (seeing shown in the accompanying drawing 6) by steel base skin, copper alloy body middle level and engineering plastics (like teflon) internal layer, so the composite bearing bearing ring has extremely strong rigidity and the extremely low working surface of friction factor.Composite bearing bearing ring and sealing lip contact position are arc transition, and internal layer cooperates for microgap or zero clearance with axle.
Further, said seal lip partly is equipped with end to end extension spring, and said extension spring applies radial pressure to seal lip.
The beneficial effect of the utility model is: the composite bearing bearing ring seal ring of the utility model structure is employed in the composite bearing bearing ring is set between metal frame and the sealing lip, makes the sealing circle have following advantage:
1, high high-voltage resistance capability: the composite bearing bearing ring rigidity of the utility model is big; Bearing capacity is high, and maximum can reach 140MPa, behind the sealing lip pressurized of seal ring; Hydraulic coupling concentrates on the composite bearing bearing ring; Make this sealing have high voltage endurance capability, through test, the 60MPa lower seal does not occur any unusual;
2, excellent and stable anti-plasticating capacity: composite bearing bearing ring internal layer with spool for microgap or zero clearance cooperate, thereby prevented that effectively the sealing waist from being extruded by hydraulic coupling vertically.Its temperature resistant range is-195 ~+280 degrees centigrade simultaneously; Surface friction coefficient extremely low (oil lubrication is merely 0.074), in the time of in oil sealing to-and-fro motion process, the composite bearing bearing ring neither can change with temperature and pressure; The bearing ring surface does not have noticeable wear yet simultaneously; The radial thickness that is bearing ring is constant basically, so the gap on itself and axle surface can keep stable microgap or zero clearance, and therefore the anti-extrusion performance of sealing is highly stable.
3, good friction, lubrication characteristic: have following characteristics and make it have good friction, lubrication characteristic owing to having the utility model sealing: the friction factor of (1), composite bearing bearing ring and tooth bar extremely low (0.074); (2), can store grease between sealing lip and the composite bearing bearing ring and effectively improve the lubricating ability that seals; (3), in use, the PTFE on top layer will transfer in the micropore on axle surface, and this had both helped protecting axle also to be beneficial to the lubricated of sealing.Therefore in seal operation, though bearing ring with the axle surface kinetic friction takes place all the time, owing to aforementioned three characteristics, < p.v>of oil seal lip value changes very little, and oil seal lip gives birth to heat and wearing and tearing are very little.
4, good thermal diffusivity: composite bearing bearing ring ectomesoderm is a metallic matrix; So thermal conductivity is high; The heat that produces in the seal-moving process passes to metal frame from the composite bearing bearing ring, passes to cylinder body by metal frame again, good heat-transfer; Speed is fast, so the good thermal diffusivity of composite bearing bearing ring seal ring has also further reduced the Environmental Conditions temperature of sealing;
5, good eccentric adaptive capacity: this sealing structure is because bearing ring is minimum with the axle wearing and tearing, and the radial thickness of bearing ring can not change basically, no matter therefore what kind of off-centre takes place in system; Seal lip can be followed the skew of axle all the time, simultaneously in the radial direction, because the body material of composite bearing bearing ring is steel; Effectively shielded the part radial force; Therefore, even working pressure constantly raises, sealing radially residue to compress length l e constant basically; The infinite length of oil sealing waist length in theory, it is infinitely great that it adapts to eccentric ability.Therefore this sealing is stronger to eccentric adaptability compared to the sealing of existing technology, and the adaptability plastic support ring that existing technology adopted especially under abominable situations such as vibration large eccentricity, high low pressure conversion moment seals incomparable especially.
6, the working life of extremely growing: the sealing of this composite bearing bearing ring possesses a series of characteristics such as aforementioned just, so can exceed more than 3 ~ 5 times of existing technology sealing its working life.
7, this sealing structure utilizes skeleton as axial baffle, need not make axial restraint when therefore installing, and has practiced thrift cost of production and installing space.
Description of drawings
Fig. 1 is the structural representation of early stage high-pressure seal ring;
Fig. 2-1,2-2 is the structural representation of available technology adopting plastics bearing ring seal ring;
Fig. 3 is structural representation Fig. 1 of the utility model;
Fig. 4 is structural representation Fig. 2 of the utility model;
Fig. 5 is structural representation Fig. 3 of the utility model;
Fig. 6 is that composite bearing bearing ring structure is formed schematic representation.
Embodiment
Fig. 3,4,5 is the structural representation of the utility model, and is as shown in the figure: composite bearing bearing ring seal ring comprises rubber body 1, metal frame 5, composite bearing bearing ring 4 and the extension spring 2 of the annular that has seal lip 3.Metal frame 5 is an one with rubber body 1 bonding hot vulcanization; Ring-shaped rubber body 1 is provided with the seal lip 3 that certain magnitude of interference is arranged with axle 6, and sealing lip 3 forms through the disposable mold pressing of mould.Said composite bearing bearing ring 4 utilizes mould when sulfuration, to be embossed between metal frame 5 and the seal lip 3, but the two is not sticked together with this, leaves suitable intermittence each other; Perhaps after metal frame 5 and rubber body 1 sulfuration were an integral body, composite bearing bearing ring 4 was arranged between metal frame 5 and the seal lip 3.Seal lip 3 parts are processed with the spring groove that end to end extension spring 2 is installed, and seal lip 3 is applied radial pressure.Extension spring 2 joins end to end and is installed in the spring groove of seal lip 3 back, and 2 pairs of seal lips of extension spring apply radial pressure.
The composite bearing bearing ring seal ring of present embodiment is installed between axle 6 and the cylinder body 7, and the seal lip 3 on the ring-shaped rubber body 1 is under the effect of magnitude of interference and extension spring 2, and seal lip 3 can closely be fitted on the axle 6.
Composite bearing bearing ring 4 front ends and rubber body 1 contact position are arc transition, and the internal layer of composite bearing bearing ring 4 cooperates for microgap or zero clearance with axle 6.Cooperate with the intermittence that belongs to mechanical field, perhaps the very light interference fit of degree
Composite bearing bearing ring 4 is followed successively by steel base skin 41, copper alloy body middle level 42 and engineering plastics internal layer 43, the material of engineering plastics internal layer 4 and teflon etc. from outside to inside.(seeing shown in the accompanying drawing 6).
Said seal ring sealed lip is interior bag spring structure, i.e. the spring and the vulcanization of rubber is an integral body; The sealing lip front and rear angles is the dihedral degree simultaneously, promptly leans on oily side sealing labial angle degree less than leaning on air side sealing lip angle.
When axle 6 carries out back and forth or rotatablely moves; Seal lip 3 and sealing waist receive the effect of high pressure; Because rubber has each characteristic of transmitting to equipressure; Therefore hydraulic coupling will be delivered on the composite bearing bearing ring 4, because of composite bearing bearing ring 4 has extremely strong rigidity, make this sealing have extremely strong high-voltage resistance capability.Composite bearing bearing ring 4 internal layers adopt teflon to process, and the teflon friction factor is extremely low and high temperature resistant, and travel axis between frictional force little, it is little wear and tear, give birth to hot low, the working life that makes this composite bearing bearing ring seal ring have overlength.
Certainly, composite bearing bearing ring 4 also can adopt other composite structure, as long as outer and middle level employing good rigidity, material that heat-transfer coefficient is high just can realize the high voltage bearing effect of composite bearing bearing ring seal ring; Internal layer also is not limited to teflon, also can adopt other composite materials wear-resistant, high temperature resistant and greasy property is good, all can reach the purpose of the utility model.
Explanation is at last; Above embodiment is only unrestricted in order to the technological scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technological scheme of the utility model; And not breaking away from the aim and the scope of present technique scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (5)
1. composite bearing bearing ring seal ring comprises rubber body (1), metal frame (5), composite bearing bearing ring (4) and the extension spring (2) of the annular that has seal lip (3); It is characterized in that: said rubber body (1) and metal frame (5) are an integral body through vulcanizing bonding in mould; Said rubber body (1) is provided with the seal lip (3) that certain magnitude of interference is arranged with axle, and said seal lip (3) forms through the disposable mold pressing of mould; Said composite bearing bearing ring (4) utilizes mould when sulfuration, to be embossed between metal frame (5) and the seal lip (3); But the two is not sticked together with this; Perhaps after metal frame (5) and rubber body (1) sulfuration are an integral body, composite bearing bearing ring (4) is fitted between metal frame (5) and the seal lip (3).
2. composite bearing bearing ring seal ring according to claim 1 is characterized in that: said composite bearing bearing ring (4) is followed successively by steel base skin (41), copper alloy body middle level (42) and engineering plastics internal layer (43) from outside to inside.
3. composite bearing bearing ring seal ring according to claim 1 and 2; It is characterized in that: composite bearing bearing ring (4) front end and rubber body (1) contact position are arc transition, and the internal layer of composite bearing bearing ring (4) cooperates for microgap or zero clearance with axle (6).
4. composite bearing bearing ring seal ring according to claim 1 and 2 is characterized in that: said seal lip (3) part is processed with the spring groove that end to end extension spring (2) is installed, and seal lip (3) is applied radial pressure.
5. composite bearing bearing ring seal ring according to claim 1 and 2 is characterized in that: said extension spring (2) is an integral body with rubber body (1) sulfuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200270825U CN202561054U (en) | 2012-01-20 | 2012-01-20 | Seal ring for combined bearing pressure-bearing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200270825U CN202561054U (en) | 2012-01-20 | 2012-01-20 | Seal ring for combined bearing pressure-bearing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561054U true CN202561054U (en) | 2012-11-28 |
Family
ID=47210713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200270825U Expired - Fee Related CN202561054U (en) | 2012-01-20 | 2012-01-20 | Seal ring for combined bearing pressure-bearing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561054U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307283A (en) * | 2013-07-01 | 2013-09-18 | 青岛开世密封工业有限公司 | Lightweight oil seal |
| CN105889517A (en) * | 2016-05-11 | 2016-08-24 | 四川行之智汇知识产权运营有限公司 | Follow-up ring for seal ring and sealing device |
| CN110612411A (en) * | 2017-05-09 | 2019-12-24 | 美国圣戈班性能塑料公司 | Seals, components and methods of use |
| CN111520408A (en) * | 2020-04-15 | 2020-08-11 | 人本集团有限公司 | Anti-loosening sealing structure |
| CN113484176A (en) * | 2021-06-23 | 2021-10-08 | 重庆长安汽车股份有限公司 | Oil seal reliability verification method |
| CN116324235A (en) * | 2020-10-28 | 2023-06-23 | 纳博特斯克有限公司 | Vacuum seal and drive transmission |
-
2012
- 2012-01-20 CN CN2012200270825U patent/CN202561054U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307283A (en) * | 2013-07-01 | 2013-09-18 | 青岛开世密封工业有限公司 | Lightweight oil seal |
| CN105889517A (en) * | 2016-05-11 | 2016-08-24 | 四川行之智汇知识产权运营有限公司 | Follow-up ring for seal ring and sealing device |
| CN110612411A (en) * | 2017-05-09 | 2019-12-24 | 美国圣戈班性能塑料公司 | Seals, components and methods of use |
| CN111520408A (en) * | 2020-04-15 | 2020-08-11 | 人本集团有限公司 | Anti-loosening sealing structure |
| CN116324235A (en) * | 2020-10-28 | 2023-06-23 | 纳博特斯克有限公司 | Vacuum seal and drive transmission |
| CN113484176A (en) * | 2021-06-23 | 2021-10-08 | 重庆长安汽车股份有限公司 | Oil seal reliability verification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202561054U (en) | Seal ring for combined bearing pressure-bearing ring | |
| CN102537360B (en) | Assembled half-exposed framework high-pressure seal ring | |
| CN203067205U (en) | Novel coal bed methane well fixing pump | |
| CN101328885A (en) | High-efficiency wear-resistant sludge pump | |
| CN201265650Y (en) | Spring composite sealing ring | |
| CN202251956U (en) | Floating gap seal with high speed, high frequency and high abrasion resistance | |
| CN202484309U (en) | Assembled half-exposed framework high-pressure sealing ring | |
| CN203974456U (en) | Suspension strut and mine truck | |
| CN211227973U (en) | Transmission system and road roller | |
| CN203784297U (en) | Self-adjusting structure for high-pressure sealing of piston rod | |
| CN203051298U (en) | Combined plunger type cylinder | |
| CN203202208U (en) | Combined sealing structure for piston | |
| CN213392944U (en) | Sealing washer for hydraulic cylinder | |
| CN203051296U (en) | Hydraulic cylinder | |
| CN202532146U (en) | Tube nest cooler oil-water mixing warning device | |
| CN201521642U (en) | Bidirectional sealing structure used for spiral motion | |
| CN205702370U (en) | A kind of fluid pressure drive device of die casting machine | |
| CN214534432U (en) | Improved transmission main pressure cylinder piston | |
| CN200993233Y (en) | Oil seal | |
| CN2688984Y (en) | Static high-pressure sealers | |
| CN201288824Y (en) | High pressure resistant oiltight | |
| CN202914432U (en) | Hydraulic cylinder | |
| CN217682893U (en) | Oil leakage-proof self-lubricating bearing | |
| CN213270522U (en) | Rack and pinion cylinder | |
| CN210371449U (en) | Multi-stage pressure regulating oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Chunyang sealing products Co. Ltd. Assignor: Duke Chongqing High-Pressure Seals Co., Ltd. Contract record no.: 2015500000038 Denomination of utility model: Seal ring for combined bearing pressure-bearing ring Granted publication date: 20121128 License type: Common License Record date: 20150630 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190830 Address after: 400000 Chongqing Jiulongpo District Feng Sheng Road No. 15 of No. 8 Co-patentee after: Chongqing Changtong Yihe Network Communication Co., Ltd. Patentee after: Chongqing Dumask Technology Co., Ltd. Co-patentee after: Duke Chongqing High-Pressure Seals Co., Ltd. Address before: 400041 Fourth Floor of Building E, 170 No. 4 Keyuan Road, Chongqing High-tech Zone Co-patentee before: Chongqing Duke Industrial Co., Ltd. Patentee before: Duke Chongqing High-Pressure Seals Co., Ltd. Co-patentee before: Du Changchun |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20210120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |