CN201485988U - Shearing type metal bending energy-wasting damper - Google Patents
Shearing type metal bending energy-wasting damper Download PDFInfo
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- CN201485988U CN201485988U CN2009201729687U CN200920172968U CN201485988U CN 201485988 U CN201485988 U CN 201485988U CN 2009201729687 U CN2009201729687 U CN 2009201729687U CN 200920172968 U CN200920172968 U CN 200920172968U CN 201485988 U CN201485988 U CN 201485988U
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- 239000002184 metal Substances 0.000 title claims abstract description 75
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 75
- 238000005452 bending Methods 0.000 title claims abstract description 40
- 238000010008 shearing Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000013016 damping Methods 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model relates to a shearing type metal bending energy-wasting damper which belongs to the technical field of civil engineering structural damping, in particular to a metal damper used for vibration reduction and energy-wasting. The shearing type metal bending energy-wasting damper is characterized in that a core metal energy-wasting element is at least one metal plate realizing energy-wasting capacity through bending. Two ends of the metal plate are respectively fixedly connected with an upper connecting plate and a lower connecting plate and are vertical to the upper connecting plate and the lower connecting plate; and the thickness direction of the metal plate is consistent with the direction of the shearing force born by a building structure. The utility model realizes energy waste by utilizing metal materials with better plastic deformation capacity, such as steels and the like, achieves larger deformation by using the bending deformation, can effectively improve the vibration resistance of the building structure and the bridge structure, and has novel and reasonable structure, easy processing, convenient and flexible use, strong adaptability and wide market popularization and application prospects.
Description
Technical field
Shearing-type metal bending energy-wasting damper belongs to civil engineering structure cushion technique field, is specifically related to be arranged in a kind of bridge engineering member or building structure power consumption member between bridge pier and beam slab, particularly a kind of metal damper that is used for the damping power consumption.
Background technology
Current The development of architecture more and more trends towards tall and bigization, and the frame construction of being made up of steel member, combined member or reinforced concrete member is a frequent adopted form of structure in the building.For making building structure have the ability of outside destroy such as stronger opposing earthquake or wind load, often need in frame construction, set up metal mold power consumption member.And the development of bridge engineering also more and more trends towards maximizing, Structure Safety for Bridge during for the assurance earthquake, prevent bridge, now generally rubber vibration insulating pad is set in the junction of bridge pier and beam slab, and between bridge pier and beam slab, being equipped with the power consumption member, common power consumption member has viscous type damper, MR damper, metal damper etc.Wherein metal damper is used more in engineering because of its durability and better economy.The anti-buckling energy-consumption supporting form that generally mostly is steel or combined member of metal current damper is mainly used in and bears pulling force or pressure, the ability of bearing shearing force a little less than.For example, the patent No. is that the Chinese patent of ZL200720175235.X discloses the support of a kind of nothing bonding steel reinforced concrete anti-buckling energy-consumption, this power consumption braced structures relies on core reinforcing bar member outer setting obligatory point, the core reinforcing bar member that utilization is positioned at the place, axle center bears axial force, when pressurized, because the restriction of obligatory point is arranged, flexing can not take place in core reinforcing bar member, but when pressure reaches certain limit surrender the same with tension, thereby the energy of the extraneous input that dissipates.Because this type of braced structures relates to multiple material and cooperatively interacts, structure is complicated usually, and processing technology requires also very strict.In addition, this type of braced structures be rely on core reinforcing bar member outside the tension and compression yield deformation of masterpiece time spent steel self realize power consumption and prevent the ruined function of building, but because the modulus of elasticity of steel is bigger, the deflection that can realize during surrender is very little.Therefore, realize the moderate finite deformation amount, when particularly needing to realize shear strain greatly when needs, usually the size of braced structures can be very big, so that be difficult to processing, transportation and installation, even can't realize at all that with common iron this has greatly limited applying of this type of metal damper.A kind of novel metal damper that can bear big shearing force and can realize the moderate finite deformation amount of market an urgent demand.
Summary of the invention
The purpose of this utility model is to overcome the defective of metal energy-consumption damper in the prior art, and a kind of simple and compact for structure, the shearing-type metal bending energy-wasting damper that can realize big shearing distortion is provided.
Of the present utility model being characterised in that, comprise the upper junction plate and the lower connecting plate that are fixed in the building structure, and core metal dissipative cell, described core metal dissipative cell is an at least one metal sheet by crooked realization energy dissipation capacity, fixedly connected with lower connecting plate with upper junction plate respectively in the two ends of this metal sheet, and vertical with lower connecting plate with upper junction plate; The thickness direction of this metal sheet is consistent with the direction that shearing force is born in building structure.
Described metal sheet is steel plate, stereotype or marmem.
Described metal sheet quantity be arranged in parallel between the metal sheet during more than one spaced reciprocally.
The sectional dimension at described metal sheet middle part is less than or equal to the sectional dimension at two ends up and down.
The shape of described metal sheet width both sides can symmetry.
The shape of described metal sheet width both sides can be asymmetric.
Be respectively arranged with the bindiny mechanism that links to each other with building structure on described upper junction plate and the lower connecting plate, described bindiny mechanism is through hole, screwed hole or the otic placode that has installing hole.
Described lower connecting plate lower end is connected with building structure by an auxiliary stand; Or the upper junction plate upper end is connected with building structure by an auxiliary stand; Or the lower connecting plate lower end is connected with building structure by an auxiliary stand, and passes through another auxiliary stand on the upper junction plate and be connected with building structure.
The two ends of described metal sheet are to adopt welding with the mode that upper junction plate is fixedlyed connected with lower connecting plate respectively, on upper junction plate and lower connecting plate, process the groove of respective numbers and size respectively, weld again after then the two ends of described metal sheet being inserted the groove of upper and lower junction plate respectively.
Shearing-type metal bending energy-wasting damper of the present utility model utilizes steel plate as dissipative cell, and when two ends were subjected to shearing action up and down, the plastic hinge that produces when utilizing the steel plate upper and lower side to be subjected to curved the surrender rotates realized power consumption.When needs bear bigger shearing action, can increase the quantity of steel plate, the steel plate compartment of terrain should be set in parallel between upper junction plate and the lower connecting plate the very simple compactness of structure during increase.
Compared with prior art, the utility model shearing-type metal bending energy-wasting damper has following advantage:
1) can realize the moderate finite deformation amount.Utilize in the utility model by the crooked steel plate of energy dissipation capacity of realizing as dissipative cell, when two ends are subjected to shearing action up and down, the flexural deformation that utilizes steel plate to produce---be the flexural deformation of dissipative cell, thereby can in limited height, obtain bigger deflection.And existing anti-buckling energy-consumption braced structures utilization is that the tension and compression yield deformation of support component steel self obtains deflection, because the modulus of elasticity of steel is bigger, therefore the deflection that can realize is very little.
2) simple and compact for structure.The utility model as dissipative cell, need not to establish in addition restraining structure with metal material such as steel plate, stereotype or marmems.And existing buckling-resistant support structure also needs to be provided with restraining structure except that core steel dissipative cell is set, and restraining structure generally includes multiple different materials such as concrete, adherence preventing material and steel pipe, so operation is more in the process, structure is more complicated also.
3) can bear bigger shearing force.The utility model can be realized the moderate finite deformation amount, and can improve the ability of bearing shear-type load by quantity that increases metal sheet and the width of adjusting metal sheet, therefore can bear bigger shearing force.
And when the polylith metal sheet is set, only need to keep suitable distortion between metal sheet and allow bit space get final product, so overall dimensions is less.And the deflection that existing buckling-resistant support structure can be realized is very little, and it only is suitable for the deflection small construction and is not suitable for the bigger structure position of distortion.
4) designability is strong.The utility model can be by changing the yield force that metal sheet quantity, width, thickness and shape change arbitrarily in being implemented in a big way, and yield displacement can satisfy the needs of each class formation.
Evidence, the utility model utilizes good plastic deformation ability realization power consumptions such as steel, and utilize its flexural deformation to realize bigger deflection, its novel and reasonable structure, be easy to processing, easy to use flexible, applicability is strong, can effectively improve the anti-seismic performance of building structure and bridge construction, have the vast market popularizing application prospect.
Description of drawings
Fig. 1 is one of structural representation of shearing-type metal bending energy-wasting damper.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is one of application schematic diagram of shearing-type metal bending energy-wasting damper shown in Figure 1.
Fig. 4 is one of work schematic diagram of condition down cut type metal bending energy-consumption damper shown in Figure 3.
Fig. 5 be shearing-type metal bending energy-wasting damper shown in Figure 1 the application schematic diagram two.
Fig. 6 be condition down cut type metal bending energy-consumption damper shown in Figure 5 the work schematic diagram two.
Fig. 7 be shearing-type metal bending energy-wasting damper structural representation two.
Fig. 8 is that the B of Fig. 7 is to view.
Fig. 9 be shearing-type metal bending energy-wasting damper structural representation three.
Four of the structural representation of Figure 10 shearing-type metal bending energy-wasting damper.
Figure 11 is that the C of Figure 10 is to sectional view.
Figure 12 is the vertical view of Figure 11.
Figure 13 is the application schematic diagram of shearing-type metal bending energy-wasting damper on bridge.
Figure 14 is the E-E partial sectional view of Figure 13.
Figure 15 is the D portion enlarged drawing among Figure 13.
The specific embodiment
Embodiment one
The utility model shearing-type metal bending energy-wasting damper as shown in Figure 1 and Figure 2, comprise upper junction plate 1, lower connecting plate 2 and core steel dissipative cell, core steel dissipative cell is the block plate 3 that the plane is provided with, and the two ends of steel plate 3 are firmly welded with upper junction plate 1 and lower connecting plate 2 respectively and fused.Be connected with other members for convenient, also be respectively arranged with on upper junction plate 1 and lower connecting plate 2 and be used for the syndeton that links to each other with other structures, syndeton is a through hole 4 in this example.
When in frame construction, using, as shown in Figure 3, Figure 4, be welded with on the steel frame 5 and the corresponding adpting flange 7 of upper and lower junction plate, utilize securing member 6 that upper junction plate 1 and lower connecting plate 2 are fixed together with adpting flange, thereby the utility model firmly is fixed on the steel frame 5.When steel frame 5 is subjected to shearing force F1 and F2 effect and deforms, because the utility model adopts the less steel plate of bending rigidity as core steel dissipative cell, therefore be subjected under the situation of big shearing force effect at two ends, the steel plate upper and lower side can occur bending and deformation when being subjected to curved the surrender, the plastic hinge that utilizes steel to produce in plastic history rotates realizes power consumption, thereby reach the extraneous input of decay energy, the effect that makes frame construction avoid damaging.
Because the utility model shearing-type metal bending energy-wasting damper is that good plastic deformation ability obtains deflection when relying on steel to be cut; promptly utilize deformation of members in limited height, to obtain bigger flexural deformation; rather than utilize the tension and compression yield deformation of steel to obtain deflection; therefore can realize bigger deflection; the more multipotency that dissipates more helps the protection of frame construction.
Utilize adpting flange 7 to realize being connected of the utility model and steel framed structure in this example, in actual applications, also can with the utility model directly weldering be connected on the steel frame or utilize securing member directly to be fixed on the steel frame, also can realize same effect.In addition, be connected with other structures for convenience, except that the through hole that is provided for described in this example connecting, other structures that are used to connect such as screwed hole, the otic placode that has connecting hole, snap close, suspension ring can be set also on the upper and lower junction plate.
In addition, this example only is that example describes with the steel frame, in actual applications, also can be used for the frame construction that combined member or reinforced concrete member are formed, and also can realize the effect of energy-dissipating and shock-absorbing well.In addition, the utility model can also be used for places such as bridge, floor gap, for example is used between the body of a bridge and the bridge pier, and use in parallel with body of a bridge bearing all is based on the flexural deformation of steel plate and the know-why that the flexural bending distortion is consumed energy, and does not illustrate one by one at this.
It is pointed out that when the utility model building structure connected, should notice that the thickness direction of steel plate should be consistent with the direction that shearing force is born in building structure, so that the distortion of steel plate and energy dissipation capacity reach best.
Embodiment two
Based on embodiment one described know-why because the utility model shearing-type metal bending energy-wasting damper can realize bigger deflection, therefore overall dimensions of the present utility model can control very little.As Fig. 5, shown in Figure 6, be with embodiment one difference, when the utility model shearing-type metal bending energy-wasting damper is small-sized, can on steel frame, add an auxiliary stand 9, again the adpting flange 7 that fixedly installs on upper junction plate 1 and the steel frame is linked to each other, the adpting flange 7 that fixedly installs on lower connecting plate 2 and the auxiliary stand 9 is linked to each other, thereby the utility model firmly is connected on the steel frame 5.When steel frame 5 is subjected to shearing force F1 and F2 effect and deforms, because the utility model adopts the less steel plate of bending rigidity as core steel dissipative cell, therefore be subjected under the situation of big shearing action at two ends, the steel plate upper and lower side can occur bending and deformation when being subjected to curved the surrender, the plastic hinge that utilizes steel to produce in plastic history rotates realizes power consumption, thereby reach the extraneous input of decay energy, the effect that makes frame construction avoid damaging.
Because overall dimensions of the present utility model can be provided with lessly, therefore, it is very little to take installing space, and its applicability is stronger.Except that the auxiliary stand of this routine described structure, utilize the auxiliary stand of other structures or other connected mode, as long as just the utility model firmly is connected on the steel frame, also can realize same effect.
Embodiment three
As Fig. 7, the utility model shearing-type metal bending energy-wasting damper shown in Figure 8, be with the difference of embodiment one, because when the utility model is subjected to shear loads, it is less that moment is born at the middle part of described core steel dissipative cell, for reducing system stiffness and saving steel, suitably cut away the part material at steel plate 3 middle parts, steel plate 3 is made approximate " worker " glyph shape, the middle part sectional dimension that makes steel plate is less than the two ends sectional dimension.In addition,, increase the quantity of steel plate, three block plates are set altogether as core steel dissipative cell for bearing bigger shearing force effect.When being provided with, three block plates are arranged in parallel, and keep the allow bit space of suitable spacing as distortion headspace and welding operation each other.For ease of being connected, be provided with the otic placode 8 of connecting hole on upper junction plate 1 and the lower connecting plate 2 respectively with other members.
When the size and shape one timing of steel plate, the ability that the quantity of increase steel plate can make whole energy-consumption damper device bear shearing force significantly improves, and is therefore when design is used, very convenient.In addition, owing to when the polylith steel plate is set, need not reserve very large space between steel plate, therefore, can not enlarge markedly overall dimensions of the present utility model.
Except that " worker " font of mentioning in this example, steel plate can also be processed into shapes such as hourglass shape as shown in Figure 9, the middle part area size that also can both realize making steel plate is less than the two ends area size, thereby reaches the purpose that reduces rolled steel dosage.Generally speaking, for making the equilibrium of product deformability, and have the good surface appearance effect, during making at the middle part of steel plate along steel plate breadth perpendicular bisector from both sides cut-out material as far as possible symmetrically, certainly, also can asymmetricly carry out material removal in case of necessity.
Embodiment four
As Figure 10, Figure 11, shearing-type metal bending energy-wasting damper shown in Figure 12, except that the quantity and change of shape of steel plate, be with the main difference part of embodiment two, for the vertical relation that guarantees steel plate 3 and upper junction plate 1 and lower connecting plate 2 with firmly be connected, during making, according to the size of steel plate and the quantity and the spacing of setting thereof, on upper junction plate 1 and lower connecting plate 2, process the groove of respective numbers and size respectively, weld again after then the two ends of steel plate being inserted the groove of upper and lower junction plate respectively.Help like this improving and guarantee and bonding strength between steel plate and the upper and lower junction plate also can effectively guarantee the vertical relation between steel plate and upper and lower junction plate simultaneously.In addition, for ease of being connected, on upper junction plate 1 and the lower connecting plate 2 screwed hole 10 is set respectively with other members.
When being used for the energy-dissipating and shock-absorbing of bridge construction, as Figure 13, Figure 14, shown in Figure 15, the utility model is got shearing-type metal bending energy-wasting damper 14 to be placed between the body of a bridge 11 and the bridge pier 12, with 13 uses in parallel of body of a bridge bearing, utilize the screwed hole that is provided with on the upper junction plate 1 of the utility model shearing-type metal bending energy-wasting damper 14 and the lower connecting plate 2, with securing member (the routine techniques method does not specifically illustrate among the figure) the utility model is linked to each other with the body of a bridge 11 and bridge pier 12 respectively.It should be noted that the thickness direction of steel plate 3 should be consistent with the length direction of the body of a bridge, that is the breadth width of steel plate is consistent with the width of the body of a bridge when connecting, specifically as shown in figure 15, so that the distortion of steel plate and energy dissipation capacity reach best.
In this example upper and lower junction plate of the present utility model is directly linked to each other with the body of a bridge and bridge pier; in actual applications; also can the utility model and the body of a bridge and bridge pier be linked together by the auxiliary frame structure; certainly; arrangement form of the present utility model and usage quantity also are not limited to this example; can be optimized selection according to engineering is actual; also can serve the same role; do not do independent explanation one by one at this; as long as based on know-why of the present utility model, all in protection category of the present utility model.
Claims (8)
1. shearing-type metal bending energy-wasting damper, it is characterized in that, comprise the upper junction plate and the lower connecting plate that are fixed in the building structure, and core metal dissipative cell, described core metal dissipative cell is an at least one metal sheet by crooked realization energy dissipation capacity, fixedly connected with lower connecting plate with upper junction plate respectively in the two ends of this metal sheet, and vertical with lower connecting plate with upper junction plate; The thickness direction of this metal sheet is consistent with the direction that shearing force is born in building structure.
2. shearing-type metal bending energy-wasting damper as claimed in claim 1 is characterized in that, described metal sheet is steel plate, stereotype or marmem.
3. shearing-type metal bending energy-wasting damper as claimed in claim 1 is characterized in that, described metal sheet quantity be arranged in parallel between the metal sheet during more than one spaced reciprocally.
4. shearing-type metal bending energy-wasting damper as claimed in claim 1 is characterized in that, the sectional dimension at described metal sheet middle part is less than or equal to the sectional dimension at two ends up and down.
5. shearing-type metal bending energy-wasting damper as claimed in claim 1 is characterized in that, the shape symmetry of described metal sheet width both sides.
6. shearing-type metal bending energy-wasting damper as claimed in claim 1 is characterized in that, the shape of described metal sheet width both sides is asymmetric.
7. shearing-type metal bending energy-wasting damper as claimed in claim 1, it is characterized in that, be respectively arranged with the bindiny mechanism that links to each other with building structure on described upper junction plate and the lower connecting plate, described bindiny mechanism is through hole, screwed hole or the otic placode that has installing hole.
8. shearing-type metal bending energy-wasting damper as claimed in claim 1 is characterized in that, described lower connecting plate lower end is connected with building structure by an auxiliary stand; Or the upper junction plate upper end is connected with building structure by an auxiliary stand; Or the lower connecting plate lower end is connected with building structure by an auxiliary stand, and passes through another auxiliary stand on the upper junction plate and be connected with building structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729687U CN201485988U (en) | 2009-08-21 | 2009-08-21 | Shearing type metal bending energy-wasting damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009201729687U CN201485988U (en) | 2009-08-21 | 2009-08-21 | Shearing type metal bending energy-wasting damper |
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| CN201485988U true CN201485988U (en) | 2010-05-26 |
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| CN2009201729687U Expired - Fee Related CN201485988U (en) | 2009-08-21 | 2009-08-21 | Shearing type metal bending energy-wasting damper |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011439A (en) * | 2010-11-24 | 2011-04-13 | 南京工业大学 | Staged Yield Type Mild Steel Damper |
| CN102191822A (en) * | 2011-05-30 | 2011-09-21 | 上海建科结构新技术工程有限公司 | Shearing type parallel mild steel quake-proof damper for building structures |
| CN104453006A (en) * | 2014-12-08 | 2015-03-25 | 大连理工大学 | Bolt-type shear-plate damper with clamp plates |
| CN105040851A (en) * | 2015-08-05 | 2015-11-11 | 清华大学 | Extensible arm truss system replaceable after earthquake |
| CN108517979A (en) * | 2018-02-26 | 2018-09-11 | 北京建筑大学 | A kind of damping device and its installation method |
| CN110080422A (en) * | 2019-04-11 | 2019-08-02 | 横琴共轭科技有限公司 | A kind of assembled coupling metal damping wall |
| CN117536088A (en) * | 2024-01-09 | 2024-02-09 | 中裕铁信交通科技股份有限公司 | Heterogeneous metal damping rod and manufacturing method thereof |
-
2009
- 2009-08-21 CN CN2009201729687U patent/CN201485988U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011439A (en) * | 2010-11-24 | 2011-04-13 | 南京工业大学 | Staged Yield Type Mild Steel Damper |
| CN102011439B (en) * | 2010-11-24 | 2012-01-04 | 南京工业大学 | Staged Yield Type Mild Steel Damper |
| CN102191822A (en) * | 2011-05-30 | 2011-09-21 | 上海建科结构新技术工程有限公司 | Shearing type parallel mild steel quake-proof damper for building structures |
| CN104453006A (en) * | 2014-12-08 | 2015-03-25 | 大连理工大学 | Bolt-type shear-plate damper with clamp plates |
| CN104453006B (en) * | 2014-12-08 | 2017-08-22 | 大连理工大学 | A kind of bolt type clamping plate shear plate damper |
| CN105040851A (en) * | 2015-08-05 | 2015-11-11 | 清华大学 | Extensible arm truss system replaceable after earthquake |
| CN108517979A (en) * | 2018-02-26 | 2018-09-11 | 北京建筑大学 | A kind of damping device and its installation method |
| CN110080422A (en) * | 2019-04-11 | 2019-08-02 | 横琴共轭科技有限公司 | A kind of assembled coupling metal damping wall |
| CN117536088A (en) * | 2024-01-09 | 2024-02-09 | 中裕铁信交通科技股份有限公司 | Heterogeneous metal damping rod and manufacturing method thereof |
| CN117536088B (en) * | 2024-01-09 | 2024-04-02 | 中裕铁信交通科技股份有限公司 | Heterogeneous metal damping rod and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20110821 |