CN203979698U - A kind of pipe coupling - Google Patents
A kind of pipe coupling Download PDFInfo
- Publication number
- CN203979698U CN203979698U CN201420424093.6U CN201420424093U CN203979698U CN 203979698 U CN203979698 U CN 203979698U CN 201420424093 U CN201420424093 U CN 201420424093U CN 203979698 U CN203979698 U CN 203979698U
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- China
- Prior art keywords
- connecting base
- pipeline
- ring
- attaching nut
- groove
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- Expired - Lifetime
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- 230000008878 coupling Effects 0.000 title claims abstract description 23
- 238000010168 coupling process Methods 0.000 title claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 23
- 230000000452 restraining effect Effects 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Joints Allowing Movement (AREA)
Abstract
The utility model discloses a kind of pipe coupling, be provided with seal groove and restraining groove in described pipeline periphery, described joint comprises that inside is provided with connecting base and the attaching nut of through hole, end at described through hole is provided with step hole, in described through hole, be provided with limited step, in described seal groove, be provided with O-ring seals, described O-ring seals is placed between connecting base and pipeline and by distortion and makes connecting base and seal for pipe joints, described attaching nut is enclosed within on pipeline and with connecting base and is threaded, in described restraining groove, be provided with limited ring, after locking on connecting base, described attaching nut forms an annular groove space, described limited ring is free to slide vertically in annular groove space, between described pipeline end face and limited step end face, leave flexible adjusting play.The utility model can carry out certain compensation to moving axially of pipeline by the control of annular groove space axial depth and limited ring, thereby solves the problem of stress concentration that the middle pipeline that is rigidly connected produces because expanding with heat and contract with cold.
Description
Technical field
The utility model can be used for fluid conveying pressure and does not connect higher than the metal tube of 20MPa, the pipe coupling that particularly a kind of high, normal, basic setting-out spraying system pipeline being applicable in fire protection engineering connects.
Background technique
Have multiple Placement for metallic conduit, in fire protection engineering, normal flange connection, welding, the metal hard-sealing of adopting connects (DIN2353) or is threaded.While construction at the scene, the pipeline that adopts flange to connect for need, first by flange welding or be threaded on high pressure pipe line, then dock high pressure pipe line linked together with flange by flange, this Placement installation cost is high, pipeline is heated catch a cold cannot compensate, later stage demolition and maintenance inconvenience.For being welded to connect, common form of construction work is that pipeline is carried out by multiple welding manner, pipeline being linked together after pre-welding treatment.This form of construction work cannot be avoided because of the welding quality variety of issue bringing that do not pass a test, and this kind of Placement also cannot compensate its length in the time that pipeline is heated or catches a cold simultaneously, and causes stress to be concentrated, and even pipeline is destroyed.Connect (DIN2353) for metal hard-sealing, its greatest drawback is exactly cannot good seal for vibrations operating mode, just loses sealing effect once dismantling simultaneously.For the pipeline being threaded, its construction needs on-the-spot mantle fiber often, then by inipple, pipeline is linked together.This Placement often causes poor sealing, and the construction of small space is also one of its difficult problem that must face and solve.
Model utility content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of on-site installation and maintenance convenience, connection to seal reliably, can expand with heat and contract with cold and carry out the metal tube pipe joint of length compensation pipeline.
The technical solution of the utility model is achieved in that a kind of pipe coupling, it is characterized in that: the periphery in described pipeline and joint joint is provided with seal groove and restraining groove, described joint comprises that inside is provided with connecting base and the attaching nut of through hole, be provided with the step hole with restraining groove corresponding matching in the end of described through hole, described step hole radial depth is not more than the groove depth of restraining groove, described step hole axial depth is greater than the axial width of restraining groove, in described through hole, be provided with limited step, in described seal groove, be provided with O-ring seals, in the time that described pipeline is connected with connecting base, described O-ring seals is placed between connecting base and pipeline and by distortion and makes connecting base and seal for pipe joints, described attaching nut is enclosed within on pipeline and with connecting base and is threaded, in described restraining groove, be provided with limited ring, the external diameter of described limited ring is less than the internal diameter of step hole, the internal diameter of described limited ring is greater than the external diameter of restraining groove, after described attaching nut locks on connecting base, the step hole of described attaching nut and connecting base forms an annular groove space, described limited ring is free to slide vertically in annular groove space, between described pipeline end face and limited step end face, leave flexible adjusting play.
Pipe coupling described in the utility model, described in it, step hole axial depth is 1.5～2 times of pipeline upper limit position groove axial width.
Pipe coupling described in the utility model, is provided with the back-up ring coordinating with O-ring seals in its seal groove on described pipeline, and the external diameter of described back-up ring is less than the diameter of bore of connecting base, and the internal diameter of described back-up ring is greater than the external diameter of seal groove.
Pipe coupling described in the utility model, described in it, limited ring is made up of two-part at least, and the central angle alpha of every part is not more than 180 ° and be not less than 170 °.
Pipe coupling described in the utility model, described in it, the externally threaded thread pitch of connecting base connecting end is not more than 1.5mm, and the internal thread length of described attaching nut's connecting end is less than the external thread length of connecting base.
Pipe coupling described in the utility model, described in it, be connected to L shaped elbow structure or T shape three-port structure, the structure of its each tunnel end is identical, or described connecting base is T shape tee union, wherein the end construction of two paths is identical, the 3rd path inside is provided with screw thread, for connecting shower nozzle part.
Pipe coupling described in the utility model, described in it, connecting base and attaching nut are cylindrical, are respectively arranged with the technique blind hole perpendicular to through-bore axis at described connecting base and attaching nut's periphery.
Pipe coupling described in the utility model, described in it, connecting base and attaching nut are multi-edge column-shaped.
Owing to having adopted technique scheme, the new beneficial effect of this practicality is:
(1) can carry out certain compensation to moving axially of pipeline by the control of annular groove space axial depth and limited ring, thereby solve the problem of stress concentration that the middle pipeline that is rigidly connected produces because expanding with heat and contract with cold.
(2) can, by the effect of O-ring seals and back-up ring, the joint of pipe coupling be sealed, thereby ensure that certain fluid conveying pressure lower seal is good.
(3) the assembling technique blind hole used that can utilize hook spanner to go up processing by attaching nut is tightened attaching nut, thereby realizes the connection of pipeline in small space, and the size that can also reduce like this construction tool so that convenient construction simultaneously.
Brief description of the drawings
Fig. 1 is the utility model embodiment 1 use view.
Fig. 2 is the structural representation of limited ring in the utility model.
Fig. 3 is the structural representation after the utility model is connected with pipeline.
Fig. 4 is the utility model embodiment 2 use view.。
Mark in figure: 1 is pipeline, 2 is seal groove, 3 is restraining groove, 4 is connecting base, and 4a is through hole, and 4b is step hole, 4c is limited step, and 4d is flexible adjusting play, and 4e is step plane, 4f is inner threaded surface, 5 is attaching nut, and 6 is O-ring seals, and 7 is limited ring, 8 is back-up ring, and 9 is technique blind hole.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1: as shown in Figure 1,2 and 3, a kind of pipe coupling, be provided with seal groove 2 and restraining groove 3 in described pipeline 1 and the periphery of joint joint, described joint comprises that inside is provided with connecting base 4 and the attaching nut 5 of through hole 4a, described connecting base 4 and attaching nut 5 are cylindrical, be respectively arranged with the technique blind hole 9 perpendicular to through-bore axis at described connecting base 4 and attaching nut's 5 periphery, to tighten by hook spanner when assembling, so just can ensure to carry out being linked and packed of pipeline at small space.
Wherein, in described seal groove 2, be provided with O-ring seals 6, in the time that described pipeline 1 is connected with connecting base 4, described O-ring seals 6 is placed between connecting base 4 and pipeline 1 and by distortion connecting base 4 and pipeline 1 is sealed, the high pressure pipe line external diameter that the endoporus of connecting base must be connected with this matches, gap can not be excessive between the two, otherwise cannot ensure the sealability of O-ring seals; And, in seal groove 2 on described pipeline 1, be provided with the back-up ring 8 coordinating with O-ring seals 6, the external diameter of described back-up ring 8 is less than the diameter of bore of connecting base 4, the internal diameter of described back-up ring 8 is greater than the external diameter of seal groove 2, such design has ensured to have elastically-deformable O-ring seals under high-pressure situations and can not be extruded among the gap that high pressure pipe line and connecting base attachment hole form, thereby avoids the squeezed bad situation of O-ring seals under high pressure.In the present embodiment, described seal groove is arranged on pipeline external surface, can ensure like this convenient of installation and maintenance, but does not also get rid of seal groove is arranged on to the situation on connecting base, but no matter where seal groove is opened in, and all needs to configure O-ring seals and back-up ring.
The degree of depth of described seal groove is determined by GB GB/T3452 according to the Dimensions of O-ring seals and connecting base diameter of bore, the width of seal groove is determined according to the axial width of limited ring, need to consider the variation of groove width in the time using back-up ring simultaneously, because needs are considered sealing high-pressure liquid, so the diameter tolerance of seal groove and surface roughness need to have higher requirement, wherein roughness is not more than Ra3.2.Wherein, the diameter of bore of connecting base is slightly larger than and is connected high pressure pipe line, and can ensure again that O-ring seals is arranged on after seal groove can effective sealing simultaneously, and same, its surface roughness is not more than Ra3.2.After O-ring seals and supporting back-up ring are arranged on and are connected in high pressure pipe line seal groove, just connected pipe can be inserted in the through hole of connecting base, it is noted that when O-ring seals is installed, on O-ring seals, to be coated with grease-addedly, prevent mechanical deterioration.When high pressure pipe line band O-ring seals inserts after connecting base, O-ring seals produces deformation under the acting in conjunction of sealing seat internal surface and high pressure pipe line seal groove, and this deformation makes to form between connecting base and high pressure pipe line a good sealing.
Wherein, be provided with the step hole 4b with restraining groove 3 corresponding matching in the end of described through hole 4a, described step hole 4b radial depth is not more than the groove depth of restraining groove 3, described step hole 4b axial depth is 1.5～2 times of pipeline 1 upper limit position groove 3 axial widths, in described through hole 4a, be provided with limited step 4c, in described restraining groove 3, be provided with limited ring 7, described attaching nut inside is provided with the through hole mating with pipeline, and be provided with the internal thread matching with the outside thread of connecting base setting, the externally threaded thread pitch of described connecting base 4 connecting ends is not more than 1.5mm, the internal thread length of described attaching nut's 5 connecting ends is less than the external thread length of connecting base 4, in the time that attaching nut is threaded with connecting base by assembly tool and tightens, can closely be close together with connecting base, now, described attaching nut 5 and the step hole 4b of connecting base 4 form an annular groove space, the external diameter of described limited ring 7 is less than the internal diameter of step hole 4b, the internal diameter of described limited ring 7 is greater than the external diameter of restraining groove 3, described limited ring 7 is free to slide vertically in annular groove space, between described pipeline 1 end face and limited step 4c end face, leave flexible adjusting play 4d.In the time that high-pressure metal pipeline axial moves, limited ring can be free to slide thereupon in annular groove space, in the time that limited ring moves to pipe joint with pipeline, the end surface of step hole of connecting base to its move axially carry out spacing; When limited ring is when with pipeline, pipe joint moves dorsad, attaching nut to its move axially carry out spacing.Mobile space is according to metallic conduit linear expansivity calculative determination, can be connected joint and links together like this, and possess certain space that moves axially with regard to ensureing to be connected high-pressure metal pipe.
In inserting high pressure pipe line, one group of limited ring is contained in the restraining groove of connected pipe, subsequently, need to utilize attaching nut that connecting base and high pressure pipe line are linked together, by the effect of screw pair between connecting base and attaching nut, limited ring can be brought in the step hole of connecting base, so limited ring can be followed high pressure pipe line and be floated in circular groove space with respect to connecting base, for example, in the time that ambient temperature is higher, high pressure pipe line can be because the impact of being heated, and cause its axial elongation, finally cause two-phase connect pipe end with respect to its install in position nearer, if the compensation of displacement cannot be provided, the destruction that finally can cause pipe fitting or pipeline because stress concentrates, floating space herein has just in time been avoided this problem.Same reason, when the ambient temperature of operating ambient temperature when installing is when lower, pipeline can cause axial shrinkage because catch a cold, and the stress that can cause equally pipeline or pipe fitting is concentrated and is destroyed pipeline.So the width in circular groove space must be calculated and be obtained by the axial deflection of pipeline, the domain of walker that this annular groove space provides is the maximum permissible value of pipeline axial length compensation.
As shown in Figure 2, described limited ring 7 is made up of two-part at least, the central angle alpha of every part is not more than 180 ° and be not less than 170 °, in the present embodiment, described limited ring is divided into two-part and structure is all identical, and its central angle is got 175 °, and such semi-loop can pack into easily in restraining groove and be unlikely to produce and interfere, can, not because being damaged by pressure or cut off with the too small limited ring that causes of the area of contact that is connected face, contribute to the guarantee of join strength again.Because need to consider stress factor, thickness, internal diameter, external diameter and the stress surface size of limited ring all need to be calculated and designed by intensitometer, what on the thickness direction of limited ring, mainly bear is shearing force, so can determine its thickness in the axial tension of maximum allowable pressure lower pipe connection or the external diameter of pressure and high pressure pipe line according to system, thereby ensure can not to be cut off at this stressed effect lower limit ring; Whether whether the internal diameter of limited ring, external diameter are related to limited ring and can be cut up under system maximum allowable pressure, now, only need the stress surface compressive strength of checking limited ring to meet the demands.
In the present embodiment, described connecting base and attaching nut are cylindrical, but are not limited to adopt this structure, and for example, described connecting base and attaching nut also can adopt the structure that is multi-edge column-shaped, and as hexagon etc., but not cylndrical surface adds the form of installing technological hole.But, it should be noted that, when employing standard six prismatic surfaces, ensure in the situation of pipe joint Inner Dimension space invariance, must the outside dimensions of pipe joint will be increased, so just make us in the time that pipe joint assembles, must adopt larger sized assembly tool, this must will be subject to great restriction aspect the selecting of the assembling of small space and instrument for us.And in the present embodiment, employing be the form of cylndrical surface, this structure can be used conventional hook spanner locking nut, this makes us aspect the selecting of small space assembling and instrument, all account for great advantage.
Wherein, described connecting base 4 is L shaped elbow structure or T shape three-port structure, and the structure of its each tunnel end is all identical.
Embodiment 2: as shown in Figure 4, described connecting base 4 is T shape tee union, are specially a T shape threeway with branch road, instead of a straight coupling.Threeway branch road includes a step plane 4e and an inner threaded surface 4f, and described internal thread 4f can be for connecting sprinkling nozzle.On step plane 4e, can place sealing gasket, after sprinkling nozzle screws in by internal thread 4f, sealing gasket can form sealing between step plane and spraying nozzle joint, and now internal thread can be regular screw threads.When pipe interior conveying high-pressure fluid, especially when high pressure water, can be by the branch road of threeway, by spraying nozzle ejecting fluid.Other structures are substantially the same manner as Example 1.
The foregoing is only the preferred embodiment of the utility model type; not novel in order to limit the utility model; all any amendments of doing within the novel spirit of the utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a pipe coupling, it is characterized in that: be provided with seal groove (2) and restraining groove (3) in described pipeline (1) and the periphery of joint joint, described joint comprises that inside is provided with the connecting base of through hole (4a) (4) and attaching nut (5), be provided with the step hole (4b) with restraining groove (3) corresponding matching in the end of described through hole (4a), described step hole (4b) radial depth is not more than the groove depth of restraining groove (3), described step hole (4b) axial depth is greater than the axial width of restraining groove (3), in described through hole (4a), be provided with limited step (4c), in described seal groove (2), be provided with O-ring seals (6), in the time that described pipeline (1) is connected with connecting base (4), described O-ring seals (6) is placed between connecting base (4) and pipeline (1) and by distortion and makes connecting base (4) and pipeline (1) sealing, described attaching nut (5) is enclosed within pipeline (1) above and is threaded with connecting base (4), in described restraining groove (3), be provided with limited ring (7), the external diameter of described limited ring (7) is less than the internal diameter of step hole (4b), the internal diameter of described limited ring (7) is greater than the external diameter of restraining groove (3), described attaching nut (5) is after the upper locking of connecting base (4), described attaching nut (5) forms an annular groove space with the step hole (4b) of connecting base (4), described limited ring (7) is free to slide vertically in annular groove space, between described pipeline (1) end face and limited step (4c) end face, leave flexible adjusting play (4d).
2. pipe coupling according to claim 1, is characterized in that: described step hole (4b) axial depth is 1.5～2 times of pipeline (1) upper limit position groove (3) axial width.
3. pipe coupling according to claim 1, it is characterized in that: in the seal groove (2) on described pipeline (1), be provided with the back-up ring (8) coordinating with O-ring seals (6), the external diameter of described back-up ring (8) is less than the diameter of bore of connecting base (4), and the internal diameter of described back-up ring (8) is greater than the external diameter of seal groove (2).
4. pipe coupling according to claim 1, is characterized in that: described limited ring (7) is made up of two-part at least, and the central angle alpha of every part is not more than 180 ° and be not less than 170 °.
5. pipe coupling according to claim 1, is characterized in that: the externally threaded thread pitch of described connecting base (4) connecting end is not more than 1.5mm, and the internal thread length of described attaching nut (5) connecting end is less than the external thread length of connecting base (4).
6. according to the pipe coupling described in any one in claim 1 to 5, it is characterized in that: described connecting base (4) is L shaped elbow structure or T shape three-port structure, the structure of its each tunnel end is identical, or described connecting base (4) is T shape tee union, wherein the end construction of two paths is identical, the 3rd path inside is provided with screw thread, for connecting shower nozzle part.
7. pipe coupling according to claim 6, it is characterized in that: described connecting base (4) and attaching nut (5) are cylindrical, be respectively arranged with the technique blind hole (9) perpendicular to through-bore axis at described connecting base (4) and attaching nut's (5) periphery.
8. pipe coupling according to claim 6, is characterized in that: described connecting base (4) and attaching nut (5) are multi-edge column-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424093.6U CN203979698U (en) | 2014-07-30 | 2014-07-30 | A kind of pipe coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420424093.6U CN203979698U (en) | 2014-07-30 | 2014-07-30 | A kind of pipe coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203979698U true CN203979698U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420424093.6U Expired - Lifetime CN203979698U (en) | 2014-07-30 | 2014-07-30 | A kind of pipe coupling |
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| Country | Link |
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| CN (1) | CN203979698U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065470A (en) * | 2015-07-23 | 2015-11-18 | 成都广迈科技有限公司 | Electrical two-way limiting bearing |
| CN107420667A (en) * | 2017-09-01 | 2017-12-01 | 河南柴油机重工有限责任公司 | A kind of adjustable pipeline attachment structure |
| CN108533865A (en) * | 2018-06-25 | 2018-09-14 | 海盐双赢管件制造有限公司 | A kind of pipe fitting of connection variable-angle |
| CN110107751A (en) * | 2019-04-28 | 2019-08-09 | 温州市兴海市政建设有限公司 | Building water supply pipeline preventing water leakage connection structure |
| CN110939807A (en) * | 2019-12-11 | 2020-03-31 | 滕州市华正软接头有限公司 | Ferrule joint convenient to use |
| CN112923362A (en) * | 2021-03-01 | 2021-06-08 | 台州市迪欧电器有限公司 | Full premix combustor |
| CN115681645A (en) * | 2022-09-28 | 2023-02-03 | 四川宏华石油设备有限公司 | Hard tube connecting device and manifold system |
-
2014
- 2014-07-30 CN CN201420424093.6U patent/CN203979698U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065470A (en) * | 2015-07-23 | 2015-11-18 | 成都广迈科技有限公司 | Electrical two-way limiting bearing |
| CN105065470B (en) * | 2015-07-23 | 2018-07-10 | 衢州熊妮妮计算机科技有限公司 | A kind of two-way bearing of electric limiting |
| CN107420667A (en) * | 2017-09-01 | 2017-12-01 | 河南柴油机重工有限责任公司 | A kind of adjustable pipeline attachment structure |
| CN107420667B (en) * | 2017-09-01 | 2023-09-01 | 河南柴油机重工有限责任公司 | Adjustable pipeline connection structure |
| CN108533865A (en) * | 2018-06-25 | 2018-09-14 | 海盐双赢管件制造有限公司 | A kind of pipe fitting of connection variable-angle |
| CN108533865B (en) * | 2018-06-25 | 2023-05-30 | 海盐双赢管件制造有限公司 | Pipe joint with changeable connection angle |
| CN110107751A (en) * | 2019-04-28 | 2019-08-09 | 温州市兴海市政建设有限公司 | Building water supply pipeline preventing water leakage connection structure |
| CN110939807A (en) * | 2019-12-11 | 2020-03-31 | 滕州市华正软接头有限公司 | Ferrule joint convenient to use |
| CN112923362A (en) * | 2021-03-01 | 2021-06-08 | 台州市迪欧电器有限公司 | Full premix combustor |
| CN115681645A (en) * | 2022-09-28 | 2023-02-03 | 四川宏华石油设备有限公司 | Hard tube connecting device and manifold system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: VITALONG FIREFIGHTING SAFETY GROUP CO., LTD. Free format text: FORMER NAME: SICHUAN WEITELONG FIRE EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 611731 Chengdu high tech West West Road, No. 99, attached to No. 9, No. Patentee after: VITALONG FIRE SAFETY GROUP Co.,Ltd. Address before: 611731 Chengdu high tech West West Road, No. 99, attached to No. 9, No. Patentee before: SICHUAN WEITELONG FIREFIGHTING EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141203 |