CN201489923U - Suspension type insulator - Google Patents
Suspension type insulator Download PDFInfo
- Publication number
- CN201489923U CN201489923U CN2009201741049U CN200920174104U CN201489923U CN 201489923 U CN201489923 U CN 201489923U CN 2009201741049 U CN2009201741049 U CN 2009201741049U CN 200920174104 U CN200920174104 U CN 200920174104U CN 201489923 U CN201489923 U CN 201489923U
- Authority
- CN
- China
- Prior art keywords
- insulator
- suspension insulator
- silicon rubber
- ring
- full skirt
- 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 - Lifetime
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 87
- 239000000725 suspension Substances 0.000 title claims abstract description 49
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 14
- 229910052573 porcelain Inorganic materials 0.000 abstract description 11
- 239000004945 silicone rubber Substances 0.000 abstract description 11
- 239000011521 glass Substances 0.000 abstract description 9
- 239000000805 composite resin Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229920006231 aramid fiber Polymers 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 vinylsiloxane Chemical class 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 1
- ZHPNWZCWUUJAJC-UHFFFAOYSA-N fluorosilicon Chemical compound [Si]F ZHPNWZCWUUJAJC-UHFFFAOYSA-N 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- NOKUWSXLHXMAOM-UHFFFAOYSA-N hydroxy(phenyl)silicon Chemical compound O[Si]C1=CC=CC=C1 NOKUWSXLHXMAOM-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 239000012211 strain insulator Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Images
Landscapes
- Insulators (AREA)
Abstract
The utility model discloses a suspension type insulator, which comprises a silicone rubber umbrella skirt strip, wherein the length of the silicone rubber umbrella skirt strip is larger than or equal to 4 meters, an upper isopressing ring and a lower isopressing ring are connected to the two ends of the silicone rubber umbrella skirt strip respectively, and a locking pin is arranged on either the upper isopressing ring or the lower isopressing ring. In the suspension type insulator provided by the utility model, the silicone rubber umbrella skirt strip utilizes the upper and lower isopressing rings to form a whole insulator, and large and small umbrellas in the silicone rubber umbrella skirt strip are strung together through fiber-reinforced resin-based composite material; the height of a suspension type insulator exceeds 4 meters, which is equal to the height of more than 40 porcelain insulators or glass insulators overlapped, therefore under the condition that the quality levels are equivalent, the place where quality problems occur can only at the two end parts of the silicone rubber umbrella skirt strip, while more connecting points exist on more than 40 porcelain insulators or glass insulators overlapped, and as a result, the place where quality problems occur on the suspension type insulator is less, and the possiblity of line falling is lesser.
Description
Technical field
The utility model relates to a kind of suspension insulator, belongs to the high voltage power transmission field.
Background technology
Along with developing rapidly of World Economics, the electrical network of various countries is flourishing day by day.The demand of the various parts of using in the electrical network stringing also constantly increases, and insulator is exactly wherein a kind of.Insulator is commonly called as porcelain vase, and it is the insulator that is used for supporting lead.Insulator can guarantee that lead and cross-arm, shaft tower have enough insulation.It is in operation and should be able to bears the loading of lead vertical direction and the pulling force of horizontal direction.It is also standing Exposure to Sunlight, drench with rain, the corrosion of climate change and chemical substance.Therefore, insulator should have good electric property, and enough mechanical strengths are arranged again.The quality of insulator is crucial to the safe operation of circuit.
Insulator can be divided into supporting insulator, suspension insulator, anti-pollution type insulator and bushing insulator by structure.Used insulator in the overhead transmission line, commonly used have pin insulator, shackle insulator, suspension insulator, porcelain pole arm, rod insulator and a strain insulator etc.The electric property fault of insulator has flashover and punctures two kinds.Flashover occurs in insulator surface, can see the burn vestige, does not lose insulation property usually; Puncture the inside that occurs in insulator, by porcelain body discharge between chapeau de fer and iron pin, appearance may lose vestige, but has lost insulation property, also may insulator be destroyed fully because of producing electric arc.For puncture, should pay attention to checking the spark tracking and the burn situation of iron pin.
Suspension insulator is a kind of insulator that often uses, the insulator that often uses is the suspension insulator of disc type multi-sheet structure at present, it is by making such as pottery, glass, and as shown in Figure 1, Fig. 1 is the schematic diagram of the suspension insulator of disc type multi-sheet structure of the prior art.See also Fig. 2 then, Fig. 2 is the schematic diagram of the single chip architecture shown in Fig. 1.Single chip architecture comprises ball-and-socket 1, full skirt 2 and bulb 3, the final formation of a plurality of single chip architecture series connection structure shown in Figure 1.In use, be easy to generate lost line.
The utility model content
At above-mentioned defective, the technical problem that the utility model solves is that a kind of suspension insulator is provided, and the drop rate of this suspension insulator is low.
In order to solve above technical problem, the utility model provides following technical scheme:
A kind of suspension insulator comprises silicon rubber full skirt string, and the length of described silicon rubber full skirt string is more than or equal to 4 meters, and the two ends of described silicon rubber full skirt string are connected with grading ring and lower uniform pressure ring respectively, and described going up on grading ring or the lower uniform pressure ring has locking pin.
Preferably, described silicon rubber full skirt string comprises gamp and umbellule.
Preferably, described gamp and umbellule are alternately arranged in twos.
Preferably, described gamp and umbellule are enclosed within the fiber-reinforced resin matrix compound material rod.
Preferably, on the described fiber-reinforced resin matrix compound material rod silastic-layer is arranged.
Preferably, the length of described silicon rubber full skirt string is more than or equal to 7 meters.
Preferably, the length of described silicon rubber full skirt string is more than or equal to 10 meters.
Preferably, described upward grading ring or lower uniform pressure ring are arc.
Preferably, the described width of going up grading ring and lower uniform pressure ring is more than 0.1 meter.
Preferably, the described width of going up grading ring and lower uniform pressure ring is 0.12 meter.
Suspension insulator provided by the utility model compared with prior art, the insulator that grading ring and lower uniform pressure ring in the utilization of silicon rubber full skirt string are formed a whole, gamp and umbellule in the silicon rubber full skirt string are through together by fiber-reinforced resin matrix compound material, the height of 1 suspension insulator is more than 4 meters, be equivalent to porcelain insulator or glass insulator more than 40, under the suitable situation of quality level, the place of silicon rubber full skirt string generation quality problems can only be two ends, porcelain insulator more than 40 or glass insulator then have more tie point, therefore suspension insulator quality problems appear and the place still less, so the probability that goes offline is also with regard to still less.
Suspension insulator provided by the utility model is specially adapted to the ultra-high-tension power transmission line field.
Description of drawings
Fig. 1 is the schematic diagram of the suspension insulator of disc type multi-sheet structure of the prior art.
Fig. 2 is the schematic diagram of the single chip architecture shown in Fig. 1.
Fig. 3 is the schematic diagram of the suspension insulator that provides of embodiment 1.
Fig. 4 is the schematic diagram of the suspension insulator that provides of embodiment 2.
Fig. 5 is the schematic cross-section of the fiber-reinforced resin matrix compound material rod of the suspension insulator that provides of embodiment 2
Respectively be labeled as among the figure:
1---ball-and-socket, 2---full skirt, 3---bulb, 4---silicon rubber full skirt string, 401---gamp, 402---umbellule, 403---the fiber-reinforced resin matrix compound material rod, 4031---sandwich layer, 4032---skin, 5---go up grading ring, 6---lower uniform pressure ring, 7---locking pin.
Embodiment
For those skilled in the art can understand technical scheme provided by the utility model better, set forth below in conjunction with embodiment.
Embodiment 1
See also Fig. 3, Fig. 3 is the schematic diagram of the suspension insulator that provides of present embodiment.The unit that marks among the figure is mm.Suspension insulator comprises silicon rubber full skirt string 4, and the length of silicon rubber full skirt string 4 is 7.5 meters, and two sections of silicon rubber full skirt string are connected with grading ring 5 and lower uniform pressure ring 6 respectively, and going up in the present embodiment has locking pin 7 on the grading ring 5.
Described silicon rubber full skirt string 4 comprises a plurality of gamps 401 and a plurality of umbellule 402, between per two gamps 401 two umbellules 402 is arranged.The structural similarity of gamp 401 and umbellule 402 all is big in the root size of umbrella, and is little in the size at edge, and just umbrella root is thick, the umbrella edge thin, and the power that the umbrella edge passes on the umbrella root when stressed is little, can improve the stress of umbrella like this.The material of gamp 401 or umbellule 402 is silicon rubber, silicon rubber has multiplely all can be selected for use, for example dimethyl silicone rubber (abbreviation methyl silicone rubber), methyl vinyl silicone rubber (abbreviation vinylsiloxane rubber), methyl phenyl vinyl silicone rubber (abbreviation phenyl siloxane rubber), fluorine silicon, nitrile silicone rubber, penylene and phenylate support silicon rubber etc.Adopt silastic material to make, with respect to porcelain suspension insulator or glass suspension insulator, because density is low, weight has obtained alleviating greatly, can reduce the load to iron tower, and dismounting and installation are all comparatively convenient; And silicon rubber can improve, and anti-soil dodges, mist sudden strain of a muscle performance is strong, the wet sudden strain of a muscle and the fog lightning pressure height; And difficult fragmentation, anti-gunslinging are transported light.
In the present embodiment, gamp 401 and umbellule 402 string together by the fiber-reinforced resin matrix compound material rod 403 of centre, also can adopt other barred body material.Fiber-reinforced resin matrix compound material, what use in the present embodiment is glass fiber reinforced epoxy resin based composites rod.Fiber can also adopt organosilicon/polyamide 6 amine fiber, aramid fiber even carbon fiber etc., wherein adopt the good insulating of glass fibre and aramid fiber, preferably use this two kinds of fibers, in addition, glass fibre is with respect to the aramid fiber low price, so preferably use glass fibre as reinforcing material.Resin preferably uses epoxy resin or unsaturated polyester resin, considers from the toughness aspect, preferably adopts the epoxy resin through toughening modifying, not only has strength character, and has good impact property.Silicon rubber full skirt string is except using the gamp shown in the present embodiment, the mode accident that umbellule strings together by galss fiber reinforced resin based composites rod, can also adopt other form to make, all be acceptable as long as can realize being prepared into the mode of silicon rubber full skirt string.
The length of silicon rubber full skirt string 4 is meant the distance from first gamp or umbellule to a last gamp or umbellule, as can be seen, is exactly the distance from the gamp of high order end to the umbellule of low order end in Fig. 3.Certainly, when measuring the length of silicon rubber full skirt string, have error and exist, error is general to be allowed at 20mm (within the millimeter).The length of silicon rubber full skirt string can be brought into play the length advantage of integral insulation like this more than 4 meters, is equivalent to a plurality of existing porcelain insulators or glass insulator.
Locking pin 7 can be on last grading ring, also can be on lower uniform pressure ring, and operated by rotary motion is used to lift suspension insulator on last grading ring.Last grading ring 5 and lower uniform pressure ring 6 are arc, can play the wherein effect of silicon rubber full skirt string of protecting.The width of going up in the present embodiment grading ring 5 and lower uniform pressure ring 6 is 0.12 meter.The general width of preferably going up grading ring 5 and lower uniform pressure ring 6 should can be decided on the size and the size of silicon rubber full skirt string more than 0.1 meter, as long as can play the silicon rubber full skirt is strung all can adopting of protective effect.
Suspension insulator provided by the utility model compared with prior art, the insulator that grading ring and lower uniform pressure ring in the utilization of silicon rubber full skirt string are formed a whole, gamp and umbellule in the silicon rubber full skirt string are through together by fiber-reinforced resin matrix compound material, the height of 1 suspension insulator is more than 4 meters, be equivalent to porcelain insulator or glass insulator more than 40, under the suitable situation of quality level, the place of silicon rubber full skirt string generation quality problems can only be two ends, porcelain insulator more than 40 or glass insulator then have more tie point, therefore suspension insulator quality problems appear and the place still less, so the probability that goes offline is also with regard to still less.
Suspension insulator provided by the utility model is specially adapted to the ultra-high-tension power transmission line field.
Embodiment 2
The difference of present embodiment and embodiment 1 is:
(1) as shown in Figure 4, the schematic diagram of the suspension insulator that provides for embodiment 2 of Fig. 4.In the present embodiment, with two sections suspension insulators shown in embodiment 1 as sub-suspension insulator, make up then and obtain new suspension insulator, the length that is sub-suspension insulator drops to about 4 meters, and the entire length of the new insulator that two sections combinations obtain has reached 10 meters nearly.Like this can be so that the silicon rubber full skirt string that the combination of the gamp of some and umbellule obtains is distributed on two fiber-reinforced resin matrix compound material rods, thus the load of fiber-reinforced resin matrix compound material rod reduced.
(2) as shown in Figure 5, the schematic cross-section of the fiber-reinforced resin matrix compound material rod of the suspension insulator that provides for embodiment 2 of Fig. 5.In the present embodiment, the fiber-reinforced resin matrix compound material of suspension insulator comprises sandwich layer 4031 and skin 4032, and sandwich layer 4031 is the galss fiber reinforced resin based composites, and outer 4032 is silastic-layer.Silicon rubber can improve the anti-soil sudden strain of a muscle, mist sudden strain of a muscle performance is strong.Compare as the situation of barred body with respect to adopting silicon rubber fully, adopt such sandwich layer and outer compound mode, can reduce cost on the one hand, because adopt silicon rubber cost height fully, can reach on the other hand preferably and cooperate, galss fiber reinforced resin based composites sandwich layer provides mechanical property, and the silicon rubber skin provides anti-soil sudden strain of a muscle, mist to dodge performance.
Embodiment 3
The difference of present embodiment and embodiment 2 is:
Gamp in the silicon rubber full skirt string and umbellule adopt the form of alternately arranging in twos.Should various spread patterns all can realize, preferred still arrangement mode shown in the embodiment that uses and the arrangement mode in the present embodiment, arranges more regular, stressed comparatively evenly dispersion, and comparatively attractive in appearance.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (10)
1. suspension insulator, it is characterized in that comprise silicon rubber full skirt string, the length of described silicon rubber full skirt string is more than or equal to 4 meters, the two ends of described silicon rubber full skirt string are connected with grading ring and lower uniform pressure ring respectively, and described going up on grading ring or the lower uniform pressure ring has locking pin.
2. suspension insulator according to claim 1 is characterized in that, described silicon rubber full skirt string comprises gamp and umbellule.
3. suspension insulator according to claim 2 is characterized in that, described gamp and umbellule are alternately arranged in twos.
4. suspension insulator according to claim 2 is characterized in that described gamp and umbellule are enclosed within the fiber-reinforced resin matrix compound material rod.
5. suspension insulator according to claim 4 is characterized in that, on the described fiber-reinforced resin matrix compound material rod silastic-layer is arranged.
6. suspension insulator according to claim 1 is characterized in that, the length of described silicon rubber full skirt string is more than or equal to 7 meters.
7. suspension insulator according to claim 6 is characterized in that, the length of described silicon rubber full skirt string is more than or equal to 10 meters.
8. suspension insulator according to claim 1 is characterized in that, described upward grading ring or lower uniform pressure ring are arc.
9. suspension insulator according to claim 8 is characterized in that, the described width of going up grading ring and lower uniform pressure ring is more than 0.1 meter.
10. suspension insulator according to claim 9 is characterized in that, the described width of going up grading ring and lower uniform pressure ring is 0.12 meter.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201741049U CN201489923U (en) | 2009-08-21 | 2009-08-21 | Suspension type insulator |
| US13/391,330 US8912437B2 (en) | 2009-08-21 | 2010-08-19 | Suspension insulator and suspension insulator group |
| RU2012110557/07A RU2554096C2 (en) | 2009-08-21 | 2010-08-19 | Suspended insulator and group of suspended insulators |
| BR112012003805-2A BR112012003805B1 (en) | 2009-08-21 | 2010-08-19 | SUSPENSION INSULATOR AND SUSPENSION INSULATOR GROUP |
| PCT/CN2010/001259 WO2011020304A1 (en) | 2009-08-21 | 2010-08-19 | Suspended type insulator and suspended type insulator group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201741049U CN201489923U (en) | 2009-08-21 | 2009-08-21 | Suspension type insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201489923U true CN201489923U (en) | 2010-05-26 |
Family
ID=42428792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201741049U Expired - Lifetime CN201489923U (en) | 2009-08-21 | 2009-08-21 | Suspension type insulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201489923U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011020304A1 (en) * | 2009-08-21 | 2011-02-24 | 淄博泰光电力器材厂 | Suspended type insulator and suspended type insulator group |
| CN104091658A (en) * | 2014-06-30 | 2014-10-08 | 国家电网公司 | Large 500kV bar-shaped suspended composite insulator anti-icing-flashover umbrella skirt |
| CN104966593A (en) * | 2015-08-04 | 2015-10-07 | 苏州电瓷厂股份有限公司 | 800kV outdoor rod-shaped post porcelain insulator |
| CN115558239A (en) * | 2022-10-08 | 2023-01-03 | 国网河南省电力公司电力科学研究院 | Hard material of insulator, preparation method and composite series insulator |
-
2009
- 2009-08-21 CN CN2009201741049U patent/CN201489923U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011020304A1 (en) * | 2009-08-21 | 2011-02-24 | 淄博泰光电力器材厂 | Suspended type insulator and suspended type insulator group |
| US8912437B2 (en) | 2009-08-21 | 2014-12-16 | Zibo Taiguang Electric Power Equipment Factory | Suspension insulator and suspension insulator group |
| CN104091658A (en) * | 2014-06-30 | 2014-10-08 | 国家电网公司 | Large 500kV bar-shaped suspended composite insulator anti-icing-flashover umbrella skirt |
| CN104966593A (en) * | 2015-08-04 | 2015-10-07 | 苏州电瓷厂股份有限公司 | 800kV outdoor rod-shaped post porcelain insulator |
| CN115558239A (en) * | 2022-10-08 | 2023-01-03 | 国网河南省电力公司电力科学研究院 | Hard material of insulator, preparation method and composite series insulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8912437B2 (en) | Suspension insulator and suspension insulator group | |
| WO2014063645A1 (en) | Composite tower for power transmission lines of power grid and composite cross arm structure thereof | |
| CN201539123U (en) | Inverted F-shaped insulation tower with slant pull rods used in power grid transmission lines | |
| CN201489923U (en) | Suspension type insulator | |
| CN101901649B (en) | High voltage power transmission transparent insulator | |
| CN102747856A (en) | Compound material insulating pole tower for power transmission and distribution lines | |
| CN201017728Y (en) | Extra-high voltage hollow combined insulator | |
| CN102140860A (en) | Pole tower for power transmission line of power grid | |
| CN202940071U (en) | Suspension type combination insulator | |
| CN201474359U (en) | Inverted F-shaped insulated tower used for electric network power transmission line | |
| CN203338884U (en) | Composite insulator | |
| CN106836935A (en) | A kind of upper font E glass-epoxies cross-arm tower | |
| CN203386544U (en) | Composite porcelain insulator | |
| CN109488101A (en) | A kind of Gao Nailei level insulation cross-arm for 10kV power distribution network | |
| CN201747107U (en) | Herringbone insulation tower for power grid transmission lines, with diagonal drawing bar | |
| CN202601331U (en) | Long-rod-shaped porcelain composite insulator | |
| CN205890597U (en) | Whole compound inslation cantilever system of railway contact net | |
| CN202153452U (en) | Carbon fiber composite core aluminum stranded wire conductor wire | |
| CN201489924U (en) | Suspension type insulator | |
| CN107762237A (en) | A kind of anti-corrosion insulation multifunction power shaft tower | |
| CN202523492U (en) | Composite insulator | |
| CN103390459A (en) | Triangular carbon fiber composite core photoelectricity composite overhead conductor | |
| CN202126892U (en) | Hollow disc type composite insulator | |
| CN201966005U (en) | Strong lightning resistant composite insulator | |
| CN207967870U (en) | A kind of non-maintaining compound electric power pole and tower of acute angle layout |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |
|
| CX01 | Expiry of patent term |