CN201866343U - Check valve - Google Patents
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- Publication number
- CN201866343U CN201866343U CN2010205995028U CN201020599502U CN201866343U CN 201866343 U CN201866343 U CN 201866343U CN 2010205995028 U CN2010205995028 U CN 2010205995028U CN 201020599502 U CN201020599502 U CN 201020599502U CN 201866343 U CN201866343 U CN 201866343U
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- cylindrical shell
- valve plate
- magnetic material
- embedded
- safety check
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Abstract
The utility model discloses a check valve, which comprises a cylinder and at least one valve plate. The cylinder includes an air inlet and an air outlet; the valve plate capable of turning is arranged in the cylinder; at least one table top capable of being attached to the valve plate is arranged in the cylinder; first magnetic materials are arranged on the valve plate; second magnetic materials are arranged on the table top; and the first magnetic materials and the second magnetic materials attract each other. The check valve can be closed tightly and prevented from being damaged, and benefits elimination of exhausted air and lampblack backflow.
Description
Technical field
The utility model relates to ventilation duct accessory field, particularly relates to a kind of safety check.
Background technique
At present, air draft in the building and oil smoke pipeline trend towards adopting concentrated standpipe gradually, compare with conventional pipeline, concentrated standpipe does not destroy facade, and can not influence the insulation and the performance of peripheral safeguard structure, can carry out cold and hot concentrated recovery to sending gas, the risk that outdoor wind-fall is irritated is little, and the load that outdoor wind invasion causes increases little.
The on-off mode of employed safety check normally in the concentrated standpipe of existing building air draft: the valve plate in the safety check is opened under suction port and air outlet gas differential pressure effect, closes under gravity or gas backstreaming effect afterwards.Yet, find that in actual use this safety check cuts out because of leaning on gravity or gas backstreaming, so the close problem that is not closed completely after existing valve plate to open, wind is discharged in frequent thus appearance and oil smoke pours in down a chimney phenomenon.
The model utility content
The utility model provides a kind of safety check, with the bad problem of the sealability that solves existing safety check, pours in down a chimney phenomenon to prevent discharge wind and oil smoke.
For solving the problems of the technologies described above, the utility model provides a kind of safety check, described safety check is used to be installed in the concentrated standpipe of building, described safety check comprises cylindrical shell and at least one valve plate, described cylindrical shell comprises suction port and air outlet, described valve plate is arranged in the described cylindrical shell also turning, be provided with the table top that at least one can be fitted with valve plate in the described cylindrical shell, described valve plate is provided with first magnetic material, described table top is provided with second magnetic material, and described first magnetic material is inhaled each other mutually with second magnetic material.
In described safety check, the quantity of described valve plate and table top all is two, one end of two valve plates is all hinged by same first bearing pin and cylindrical shell, described first bearing pin pass in the described cylindrical shell and its two ends and cylindrical shell affixed, described first magnetic material is two first magnets that are embedded at respectively on described two valve plates, described second magnetic material is two second magnets that are embedded at respectively on two table tops, repels each other each other between described two first magnets.
In described safety check, described two table tops all are to form by radially stretching out in cylindrical shell in cylindrical shell.
In described safety check, described two table tops all are that the perisporium vertical bending back in cylindrical shell by cylindrical shell one end forms, and the opening of described cylindrical shell one end dwindles.
In described safety check, described cylindrical shell is provided with the 3rd magnetic material that repels each other with first magnetic material.
In described safety check, the quantity of described valve plate is two, one end of two valve plates is hinged by two first bearing pins and the cylindrical shell that are fixed in cylinder inboard wall respectively, described first magnetic material is two first magnets that are embedded at respectively on described two valve plates, and described the 3rd magnetic material is to be embedded at the 3rd magnet of two on the cylinder inboard wall respectively.
In described safety check, the quantity of described table top is two, and described two table tops are to form by radially stretching out in cylindrical shell in cylindrical shell, and described second magnetic material is two second magnets that are embedded at respectively on two table tops.
In described safety check, the quantity of described table top is one, and described table top is the long table face in the cylindrical shell radially, and described second magnetic material is one second magnet that is embedded on the described long table face.
In described safety check, one end of a valve plate in described two valve plates is hinged by first bearing pin and cylindrical shell, one end of another valve plate in described two valve plates is hinged by second bearing pin and cylindrical shell, described cylinder inboard wall is shaped on the short table top that radially stretches out and can fit with another valve plate in two valve plates along cylindrical shell in cylindrical shell, described first magnetic material is two first magnets that are embedded at the other end of described two valve plates respectively, described second magnetic material is second magnet that is embedded at described short table top place, described the 3rd magnetic material is the 3rd magnet that is embedded at described cylinder inboard wall, one end of another valve plate in described two valve plates also is embedded with the 4th magnet that attracts mutually with one of two first magnets, repels each other each other between described two first magnets.
In described safety check, the quantity of described valve plate is one, one end of described valve plate is hinged by first bearing pin and cylindrical shell, described cylinder inboard wall is shaped on the short table top that radially stretches out and can fit with valve plate along cylindrical shell in cylindrical shell, described first magnetic material is first magnet that is embedded at the described valve plate the other end, described second magnetic material is second magnet that is embedded on the described short table top, and described the 3rd magnetic material is the 3rd magnet that is embedded at described cylinder inboard wall.
Compared with prior art, after the safety check that the utility model is provided is installed on the concentrated standpipe of building, when discharging wind or oil smoke, after the pressure difference of the air inlet/outlet air-flow of valve plate overcomes the suction and valve plate gravity (only overcoming the suction of valve plate and table top when valve plate is in non-standard state) of valve plate and table top, make valve plate upset and open, wind and oil smoke are discharged from, and still exist suction between valve plate and the table top this moment; When stopping to discharge wind and oil smoke, the pressure difference of the air inlet/outlet air-flow of valve plate disappears, and valve plate overturn under the suction of table top and valve plate and valve plate act in gravity and closed this moment.Because the suction of valve plate and table top can exist long-term effectively, therefore, even valve plate is obstructed when overturning or is not enough from gravity, valve plate still can fully be closed (being that valve plate and table top are fitted).The utility model can thoroughly solve the close problem that is not closed completely after valve plate is opened, thereby wind is discharged in elimination and oil smoke pours in down a chimney phenomenon, and it is impaired to avoid safety check to open.
Description of drawings
The structural representation of the safety check that Fig. 1 provides for the utility model embodiment one;
The structural representation of the safety check that Fig. 2 provides for the utility model embodiment two;
The structural representation of the safety check that Fig. 3 provides for the utility model embodiment three;
The structural representation of the safety check that Fig. 4 provides for the utility model embodiment four;
Fig. 5 is the left view of Fig. 4;
The structural representation of the safety check that Fig. 6 provides for the utility model embodiment five;
The structural representation of the safety check that Fig. 7 provides for the utility model embodiment six.
Embodiment
Core concept of the present utility model is, a kind of safety check is provided, described safety check comprises cylindrical shell and at least one valve plate, described cylindrical shell comprises suction port and air outlet, described valve plate is arranged in the described cylindrical shell and is turning, is provided with the table top that at least one can be fitted with valve plate in the described cylindrical shell, and described valve plate is provided with first magnetic material, described table top is provided with second magnetic material, and described first magnetic material is inhaled each other mutually with second magnetic material.When discharging wind or oil smoke, after the pressure difference of the air inlet/outlet air-flow of valve plate overcomes the suction and valve plate gravity (only overcoming the suction of valve plate and table top when valve plate is in non-standard state) of valve plate and table top, make valve plate upset and open, wind and oil smoke are discharged from, and still exist suction between valve plate and the table top this moment; When stopping to discharge wind and oil smoke, the pressure difference of the air inlet/outlet air-flow of valve plate disappears, and valve plate overturn under the suction of table top and valve plate and valve plate act in gravity and closed this moment.Because the suction of valve plate and table top can exist long-term effectively, therefore, even valve plate is obstructed when overturning or is not enough from gravity, valve plate still can fully be closed (being that valve plate and table top are fitted).The utility model can thoroughly solve the close problem that is not closed completely after valve plate is opened, thereby wind is discharged in elimination and oil smoke pours in down a chimney phenomenon, and it is impaired to avoid safety check to open.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.According to the following describes and claims, advantage of the present utility model and feature will be clearer.It should be noted that accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, aid illustration the utility model embodiment's purpose lucidly.
Embodiment one
As shown in Figure 1, the safety check 100 that present embodiment provides comprises cylindrical shell 110 and two valve plates 121,122, described cylindrical shell 110 comprises suction port and air outlet, described valve plate 121,122 all is arranged in the cylindrical shell 110 also turning, be provided with two table tops 131,132 that can fit with valve plate 121,122 in the described cylindrical shell 110, be provided with first magnetic material on described two valve plates 121,122, be provided with second magnetic material on described two table tops 131,132, described first magnetic material is inhaled each other mutually with second magnetic material.
Specifically, one end of described two valve plates 121,122 is all hinged with cylindrical shell 110 by same first bearing pin 140, described first bearing pin 140 pass in the cylindrical shell 110 and its two ends and cylindrical shell 110 affixed, described first magnetic material is two first magnets 151,152 that are embedded at respectively on two valve plates 121,122, described second magnetic material is two second magnets 161,162 that are embedded at respectively on two table tops 131,132, repels each other each other between described two first magnets 151,152.Two first magnets 151,152 are inhaled mutually respectively at two second magnets, 161, the 162 close different each other magnetic of a side, promptly, first magnet 151 is inhaled mutually with second magnet 161, and first magnet 152 is inhaled mutually with second magnet 162, repels mutually between first magnet 151 and first magnet 152.
In the present embodiment, described two table tops 131,132 all are to form by radially stretching out in cylindrical shell 110 in cylindrical shell 110.
The working principle of the safety check 100 that present embodiment provided is as follows:
When safety check 100 not exhausts, under two suctions that two first magnets 151,152 produce respectively and between two second magnets 161,162, two valve plates 121,122 fit tightly with two table tops 131,132 respectively, promptly, valve plate 121 fits tightly with table top 131, and valve plate 122 fits tightly with table top 132.
When safety check 100 exhausts, act on stream pressure difference on the two sides separately of two valve plates 121,122 overcome gradually suction and two valve plates 121,122 from gravity (when two valve plates 121,122 are in non-standard state, only be subjected to valve plate 121,122 and table top 131,132 suction and not from gravity), force the upset of two valve plates, 121,122 forwards to be opened.Open along with two valve plates 121,122 overturn gradually, described two suction reduce gradually, and the repulsive force between first magnet 151 and first magnet 152 increases gradually.When reaching balance between stream pressure difference and described two suction and the repulsive force, form an aperture angle between two valve plates 121,122, this angle is greater than zero degree.
When safety check 100 stops exhaust, the stream pressure difference that acts on the two sides separately of two valve plates 121,122 disappears, two valve plates 121,122 at described two suction, repulsive force and in gravity under the effect (when two valve plates 121,122 are in non-standard state, only be subjected to valve plate 121,122 and table top 131,132 suction and less than from gravity), reverse flip is closed.
Can learn, in the safety check 100 that present embodiment provides, by being separately positioned on the magnet of two valve plates 121,122 and two table tops 131,132, and the different relative positions between layout magnet the two poles of the earth, the principle of utilizing magnet there is a natural attraction between the sexes, the same sex is repelled each other, more tight when two valve plates 121,122 are closed, and make two valve plates 121,122 be subjected to reverse resistance when opening and avoid mechanical deterioration.
Embodiment two
Present embodiment and embodiment's one structure and working principle are basic identical, as shown in Figure 2, be with embodiment one difference, in the safety check 200 that present embodiment provides, two table tops 231,232 all are that the perisporium vertical bending back in cylindrical shell 210 by cylindrical shell 210 1 ends forms, and the opening of cylindrical shell 210 1 ends dwindles.
Embodiment three
Present embodiment and embodiment's one structure is basic identical, as shown in Figure 3, in the safety check 300 that present embodiment provides, the quantity of valve plate also is two, be with embodiment one difference, cylindrical shell 310 is provided with the 3rd magnetic material that repels each other with first magnetic material, two valve plates 321, an end of 322 is respectively by being fixed in two first bearing pins 341 of cylindrical shell 310 inwalls, 342 is hinged with cylindrical shell 310, described first magnetic material is to be embedded at described two valve plates 321 respectively, on 322 two first magnet 351,352, described the 3rd magnetic material is two the 3rd magnets 371 that are embedded at respectively on described cylindrical shell 310 inwalls, 372.In the present embodiment, open, between two first magnets 351,352 and two the 3rd magnets 371,372, produce two repulsive forces that increase gradually, make two valve plates 321,322 open Shi Buhui because of excessively upset is impaired along with two valve plates 321,322 overturn gradually.
Embodiment four
Present embodiment and embodiment's three check valve structure is similar, specifically please refer to Fig. 4 and Fig. 5, in the safety check 400 that present embodiment provides, the quantity of table top is one, this table top is the long table face 430 in the cylindrical shell 410 radially, described second magnetic material is to be embedded at the end (free end) that one second magnet, 460, two first magnets 451,452 on the long table face 430 are embedded at two valve plates 421,422 respectively, and two first magnets 451,452 and second magnet 460 are corresponding and inhale mutually.Present embodiment and embodiment's three differences are that two valve plates 421,422 are subjected to two suctions of generation between two first magnets 451,452 and second magnet 460 when closing, and fit tightly with long table face 430; And open along with two valve plates 421,422 overturn gradually, between two first magnets 451,452 and two the 3rd magnets 471,472, produce two repulsive forces that increase gradually, make two valve plates 421,422 open Shi Buhui because of excessively upset is impaired.
Embodiment five
Present embodiment and embodiment's four check valve structure is similar, specifically please refer to Fig. 6, difference is, in the safety check 500 that present embodiment provides, one end of valve plate 521 is hinged with cylindrical shell 510 by first bearing pin 540, one end of another valve plate 522 is hinged with cylindrical shell 510 by second bearing pin 542, cylindrical shell 510 inwalls are shaped on the short table top 530 that radially stretches out and can fit with another valve plate 522 along cylindrical shell 510 in cylindrical shell 510, described first magnetic material is to be embedded at two valve plates 521 respectively, two first magnets 551 of 522 the other ends, 552, described second magnetic material is second magnet 560 that is embedded at short table top 530 places, described the 3rd magnetic material is the 3rd magnet 570 that is embedded at cylindrical shell 510 inwalls, one end of another valve plate 522 also is embedded with the 4th magnet 580, two first magnets 551 that attract mutually with first magnet 551, repel each other each other between 552.Therefore, two first magnets 551,552 produce attraction force respectively and between the 4th magnet 580, second magnet 560, make more tight that two valve plates 521,522 close; And the repulsive force that produces between repulsive force that first magnet 551 and the 3rd magnet 570 produce and two first magnets 551,552 makes two valve plates 521,522 open Shi Buhui because of excessively upset is impaired.
Embodiment six
Present embodiment is similar with enforcement five, specifically please refer to Fig. 7, in the safety check 600 that present embodiment provides, the quantity of valve plate is one, detailed, one end of valve plate 620 is hinged with cylindrical shell 610 by first bearing pin 640, described cylindrical shell 610 inwalls are shaped on the short table top 630 that radially stretches out and can fit with valve plate 620 along cylindrical shell 610 in cylindrical shell 610, described second magnetic material is second magnet 660 that is embedded on the short table top 630, described first magnetic material is first magnet 650 that is embedded at the other end of valve plate 620, and described the 3rd magnetic material is the 3rd magnet 670 that is embedded at cylindrical shell 610 inwalls.During use, produce suction between first magnet 650 and second magnet 660 and impel valve plate 620 and short table top 630 to fit tightly, the repulsive force between the 3rd magnet 670 and first magnet 650 then makes valve plate 620 open Shi Buhui because of excessively upset is impaired.And because safety check 600 only is provided with a valve plate 620 and a table top 630, structure is more simple.
In sum, the safety check that each embodiment of the utility model provides utilizes the characteristic of magnetic polarity material polarity difference, and is closable more tight, and can avoid safety check impaired.In addition, owing to be to rely on magnetic force to close, therefore, the safety check that this practical each embodiment provides can be in non-standard state, so just makes this safety check more convenient and flexible at the mounting type of concentrating ventilation standpipe scene.
Certainly, the utility model is not limited to the foregoing description, for example, except can be, other magnetic materials such as magnet and iron content, cobalt, nickel can also be set on valve plate and table top and form the active force of magnet and other magnetic material by forming the attraction force or repulsive force between the magnet in that magnet is set respectively on valve plate and the table top.Be understandable that the quantity of valve plate of the present utility model and table top also can be three or more; And valve plate and cylindrical shell can also have other Placement; Magnet also can be the surface of pasting or being welded on valve plate and table top, and perhaps magnet otherwise is connected with table top.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. safety check, it is characterized in that, described safety check comprises cylindrical shell and at least one valve plate, described cylindrical shell comprises suction port and air outlet, described valve plate is arranged in the described cylindrical shell and is turning, is provided with the table top that at least one can be fitted with valve plate in the described cylindrical shell, and described valve plate is provided with first magnetic material, described table top is provided with second magnetic material, and described first magnetic material is inhaled each other mutually with second magnetic material.
2. safety check as claimed in claim 1, it is characterized in that, the quantity of described valve plate and table top all is two, one end of two valve plates is hinged by same first bearing pin and cylindrical shell, described first bearing pin pass in the described cylindrical shell and its two ends and cylindrical shell affixed, described first magnetic material is two first magnets that are embedded at respectively on two valve plates, and described second magnetic material is two second magnets that are embedded at respectively on two table tops, repels each other each other between described two first magnets.
3. safety check as claimed in claim 2 is characterized in that, described two table tops all are to form by radially stretching out in cylindrical shell in cylindrical shell.
4. safety check as claimed in claim 2 is characterized in that, described two table tops all are that the perisporium vertical bending back in cylindrical shell by cylindrical shell one end forms, and the opening of described cylindrical shell one end dwindles.
5. safety check as claimed in claim 1 is characterized in that, described cylindrical shell is provided with the 3rd magnetic material that repels each other with described first magnetic material.
6. according to the described safety check of claim 5, it is characterized in that, the quantity of described valve plate is two, one end of two valve plates is hinged by two first bearing pins and the cylindrical shell that are fixed in cylinder inboard wall respectively, described first magnetic material is two first magnets that are embedded at respectively on described two valve plates, and described the 3rd magnetic material is two the 3rd magnets that are embedded at respectively on the described cylinder inboard wall.
7. according to the described safety check of claim 6, it is characterized in that the quantity of described table top is two, described two table tops are to form by radially stretching out in cylindrical shell in cylindrical shell, and described second magnetic material is two second magnets that are embedded at respectively on described two table tops.
8. according to the described safety check of claim 6, it is characterized in that the quantity of described table top is one, described table top is the long table face in the described cylindrical shell radially, and described second magnetic material is one second magnet that is embedded on the described long table face.
9. according to the described safety check of claim 5, it is characterized in that, the quantity of described valve plate is two, one end of a valve plate in described two valve plates is hinged by first bearing pin and cylindrical shell, one end of another valve plate in described two valve plates is hinged by second bearing pin and cylindrical shell, described cylinder inboard wall is shaped on the short table top that radially stretches out and can fit with another valve plate in two valve plates along cylindrical shell in cylindrical shell, described first magnetic material is two first magnets that are embedded at the other end of described two valve plates respectively, described second magnetic material is second magnet that is embedded at described short table top place, described the 3rd magnetic material is the 3rd magnet that is embedded at described cylinder inboard wall, one end of another valve plate in described two valve plates also is embedded with the 4th magnet that attracts mutually with one of two first magnets, repels each other each other between described two first magnets.
10. according to the described safety check of claim 5, it is characterized in that, the quantity of described valve plate is one, one end of described valve plate is hinged by first bearing pin and cylindrical shell, be shaped on the short table top that radially in cylindrical shell, stretches out and can fit with valve plate along cylindrical shell in the described cylindrical shell, described first magnetic material is first magnet that is embedded at the described valve plate the other end, and described second magnetic material is second magnet that is embedded on the described short table top, and described the 3rd magnetic material is the 3rd magnet that is embedded at described cylinder inboard wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205995028U CN201866343U (en) | 2010-11-09 | 2010-11-09 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205995028U CN201866343U (en) | 2010-11-09 | 2010-11-09 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866343U true CN201866343U (en) | 2011-06-15 |
Family
ID=44137499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205995028U Expired - Fee Related CN201866343U (en) | 2010-11-09 | 2010-11-09 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201866343U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620014A (en) * | 2012-03-16 | 2012-08-01 | 王启定 | Anti-freezing back valve for smoke pipe of gas water heater |
| CN102992026A (en) * | 2012-10-29 | 2013-03-27 | 南通原亚精密机械有限公司 | Novel double-layer air locking material feeder |
| US20170077458A1 (en) * | 2015-09-14 | 2017-03-16 | Boe Technology Group Co., Ltd. | Filling apparatus used in an evaporator system and filling method |
| CN107626607A (en) * | 2017-10-26 | 2018-01-26 | 滁州广洋湖米业有限公司 | A kind of guide equipment of paddy processing automatic material selecting |
| CN107906233A (en) * | 2017-12-20 | 2018-04-13 | 浙江理工大学 | A kind of magnetic-type ball check valve |
| CN109114273A (en) * | 2018-09-28 | 2019-01-01 | 苏州丹顿机电有限公司 | One kind is cut off the water latching valve |
| CN109140024A (en) * | 2018-09-28 | 2019-01-04 | 苏州丹顿机电有限公司 | One kind is cut off the water self closing device |
| CN109506009A (en) * | 2017-09-15 | 2019-03-22 | 建浩Enc股份有限公司 | Multiple-way valve |
-
2010
- 2010-11-09 CN CN2010205995028U patent/CN201866343U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620014A (en) * | 2012-03-16 | 2012-08-01 | 王启定 | Anti-freezing back valve for smoke pipe of gas water heater |
| CN102992026A (en) * | 2012-10-29 | 2013-03-27 | 南通原亚精密机械有限公司 | Novel double-layer air locking material feeder |
| US20170077458A1 (en) * | 2015-09-14 | 2017-03-16 | Boe Technology Group Co., Ltd. | Filling apparatus used in an evaporator system and filling method |
| US10276835B2 (en) * | 2015-09-14 | 2019-04-30 | Boe Technology Group Co., Ltd. | Filling apparatus used in an evaporator system and filling method |
| CN109506009A (en) * | 2017-09-15 | 2019-03-22 | 建浩Enc股份有限公司 | Multiple-way valve |
| CN107626607A (en) * | 2017-10-26 | 2018-01-26 | 滁州广洋湖米业有限公司 | A kind of guide equipment of paddy processing automatic material selecting |
| CN107626607B (en) * | 2017-10-26 | 2019-11-12 | 滁州广洋湖米业有限公司 | A kind of guide equipment of paddy processing automatic material selecting |
| CN107906233A (en) * | 2017-12-20 | 2018-04-13 | 浙江理工大学 | A kind of magnetic-type ball check valve |
| CN109114273A (en) * | 2018-09-28 | 2019-01-01 | 苏州丹顿机电有限公司 | One kind is cut off the water latching valve |
| CN109140024A (en) * | 2018-09-28 | 2019-01-04 | 苏州丹顿机电有限公司 | One kind is cut off the water self closing device |
| CN109140024B (en) * | 2018-09-28 | 2020-06-30 | 苏州丹顿机电有限公司 | Automatic closing device for water cut-off |
| CN109114273B (en) * | 2018-09-28 | 2020-06-30 | 苏州丹顿机电有限公司 | Self-locking valve for water cut-off |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20141109 |
|
| EXPY | Termination of patent right or utility model |