CN106639042A - Dry type connected concrete shear wall and dry type wall connecting method - Google Patents
Dry type connected concrete shear wall and dry type wall connecting method Download PDFInfo
- Publication number
- CN106639042A CN106639042A CN201611054950.8A CN201611054950A CN106639042A CN 106639042 A CN106639042 A CN 106639042A CN 201611054950 A CN201611054950 A CN 201611054950A CN 106639042 A CN106639042 A CN 106639042A
- Authority
- CN
- China
- Prior art keywords
- concrete shear
- precast concrete
- wall
- shear wall
- connecting piece
- 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.)
- Withdrawn
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011178 precast concrete Substances 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 238000004873 anchoring Methods 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000005493 welding type Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 21
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
本发明涉及一种干式连接混凝土剪力墙,其组成包括:套筒、螺母、金属连接件和预制混凝土剪力墙;所述的预制混凝土剪力墙内竖向均匀设置有竖向钢筋,预制混凝土剪力墙内上下两侧横向设置有锚固钢筋;所述相邻预制混凝土剪力墙的竖向钢筋在其对齐处的使用套筒连接;所述的金属连接件两端分别设置有圆孔,相邻预制混凝土剪力墙对齐连接处的两个锚固钢筋的两端通过金属连接件圆孔对齐连接;所述的锚固钢筋的两端设置有螺纹,通过螺母将金属连接件紧固在锚固钢筋的两端。本发明连接方式采用干作业施工,简化施工;连接可靠,整体性好,具有优越的抗震性能,并降低连接件数量,显著提升其工业化效率。
The invention relates to a dry-connected concrete shear wall, which comprises: a sleeve, a nut, a metal connector and a prefabricated concrete shear wall; the prefabricated concrete shear wall is vertically uniformly provided with vertical steel bars, The upper and lower sides of the precast concrete shear wall are horizontally provided with anchoring steel bars; the vertical steel bars of the adjacent precast concrete shear walls are connected by sleeves at their alignment positions; the two ends of the metal connector are respectively provided with circular Holes, the two ends of the two anchor bars at the alignment joints of the adjacent precast concrete shear walls are aligned and connected through the round holes of the metal connectors; the two ends of the anchor bars are provided with threads, and the metal connectors are fastened on the Anchor both ends of the rebar. The connection method of the present invention adopts dry operation construction, which simplifies construction; the connection is reliable, the integrity is good, the anti-seismic performance is superior, and the number of connecting parts is reduced, and its industrialization efficiency is significantly improved.
Description
技术领域technical field
本发明属于预制混凝土剪力墙领域,特别是涉及一种干式连接混凝土剪力墙与墙干式连接方法。The invention belongs to the field of prefabricated concrete shear walls, and in particular relates to a dry connection method between a concrete shear wall and a wall.
背景技术Background technique
在过去的几十年时间里,我国建筑行业蓬勃发展,极大地促进了国民经济的增长。面对我国现今土地出让费用的增加、劳动人工价格的不断上升、人们对节能环保要求意识的逐步提高,建筑行业所面临的国际竞争压力越来越大。为提高核心竞争力,新的行业产业模式——预制装配式建筑应运而生。In the past few decades, my country's construction industry has flourished, which has greatly promoted the growth of the national economy. Faced with the increase of land transfer fees in our country, the continuous rise of labor prices, and the gradual improvement of people's awareness of energy conservation and environmental protection requirements, the construction industry is facing increasing pressure from international competition. In order to improve the core competitiveness, a new industry model - prefabricated buildings came into being.
装配式混凝土结构,是指由预制混凝土构件通过可靠的连接方式装配而成的混凝土结构,包括装配整体式混凝土结构、全装配混凝土结构等。在建筑工程中,简称装配式建筑;在结构工程中,简称装配式结构。Prefabricated concrete structures refer to concrete structures assembled by prefabricated concrete components through reliable connection methods, including assembled integral concrete structures, fully assembled concrete structures, etc. In construction engineering, it is referred to as prefabricated building; in structural engineering, it is referred to as prefabricated structure.
传统的住房建造技术生产效率低、施工速度慢、建设周期长、材料消耗多且工人劳动强度大,这一系列状况已不能适应现代社会对住宅的刚性需求。而装配式建筑具有以下特点:①设计多样化,可以根据住房要求进行设计;②功能现代化,可以采用多种节能环保等新型材料;③制造工厂化,可以使得建筑构配件统一工厂化生产,一气呵成;④施工装配化,可以大大减少劳动力,减少材料浪费;⑤时间最优化,使施工周期明显加快。因此,面对我国越来越大的住房需求,尽快优化建筑产业模式已势在必行。Traditional housing construction technology has low production efficiency, slow construction speed, long construction period, high material consumption and high labor intensity. These series of conditions can no longer meet the rigid demand for housing in modern society. The prefabricated building has the following characteristics: ①The design is diversified and can be designed according to the housing requirements; ②The function is modernized, and a variety of new materials such as energy saving and environmental protection can be used; ③Manufacturing is factory-based, which can make the building components and accessories uniform and factory-made. ; ④ Construction assembly can greatly reduce labor force and reduce material waste; ⑤ Time optimization can significantly speed up the construction cycle. Therefore, in the face of my country's growing demand for housing, it is imperative to optimize the construction industry model as soon as possible.
装配式建筑注重对环境、资源的保护,其施工过程中有效减少了建筑污水、有害气体、粉尘的排放和建筑噪音的污染,降低了建筑施工对周边环境的各种影响,有利于提高建筑的劳动生产率,促进设计、建筑的精细化,提升建筑的整体质量和节能减排水率,促进了我国建筑业健康可持续发展,符合国家经济发展的需求。The prefabricated building pays attention to the protection of the environment and resources. During the construction process, it effectively reduces the emission of construction sewage, harmful gases, dust and construction noise pollution, reduces the various impacts of construction on the surrounding environment, and is conducive to improving the construction efficiency. Labor productivity promotes the refinement of design and construction, improves the overall quality of buildings and the rate of energy conservation and drainage reduction, promotes the healthy and sustainable development of my country's construction industry, and meets the needs of national economic development.
发明内容Contents of the invention
本发明的目的是提供一种提高装配式结构的整体性能和便于其施工的一种干式连接混凝土剪力墙与墙干式连接方法。The object of the present invention is to provide a dry-type connection method for concrete shear wall and wall dry connection which improves the overall performance of the prefabricated structure and facilitates its construction.
一种干式连接混凝土剪力墙,其组成包括:套筒、螺母、金属连接件和预制混凝土剪力墙;所述的预制混凝土剪力墙内竖向均匀设置有竖向钢筋,预制混凝土剪力墙内上下两侧横向设置有锚固钢筋,竖向钢筋与锚固钢筋采用焊接形式连接;所述相邻预制混凝土剪力墙的竖向钢筋在其对齐处的使用套筒连接,套筒主要起了抗剪的作用,比起传统的连接方法,可以减少套筒数量或缩短套筒长度;所述的金属连接件两端分别设置有圆孔,相邻预制混凝土剪力墙对齐连接处的两个锚固钢筋的两端通过金属连接件圆孔对齐连接;所述的锚固钢筋的两端设置有螺纹,通过螺母将金属连接件紧固在锚固钢筋的两端。A dry-connected concrete shear wall, which consists of: sleeves, nuts, metal connectors and prefabricated concrete shear walls; vertical steel bars are evenly arranged in the prefabricated concrete shear walls, and the prefabricated concrete shear walls The upper and lower sides of the force wall are horizontally provided with anchoring steel bars, and the vertical steel bars and the anchoring steel bars are connected by welding; the vertical steel bars of the adjacent prefabricated concrete shear walls are connected at their alignment using sleeves, and the sleeves mainly serve as Compared with the traditional connection method, the number of sleeves can be reduced or the length of the sleeve can be shortened; the two ends of the metal connector are respectively provided with round holes, and the adjacent precast concrete shear walls are aligned with the two ends of the joint. The two ends of each anchoring steel bar are aligned and connected through the round holes of the metal connector; the two ends of the anchoring steel bar are provided with threads, and the metal connectors are fastened to the two ends of the anchoring steel bar by nuts.
所述的套筒直径大于所述的锚固钢筋的直径。The diameter of the sleeve is larger than the diameter of the anchoring steel bar.
所述的竖向钢筋两端露出的长度小于或等于套筒的长度,可以使相邻预制混凝土剪力墙拼接的严丝合缝。The exposed length of the two ends of the vertical reinforcement is less than or equal to the length of the sleeve, which can make the splicing of adjacent prefabricated concrete shear walls fit perfectly.
所述的金属连接件的圆孔直径略大于锚固钢筋的直径。The diameter of the round hole of the metal connector is slightly larger than the diameter of the anchoring steel bar.
所述的金属连接件的横截面为哑铃形状,在保证强度的条件下,减少了钢材的用量。The cross-section of the metal connector is in the shape of a dumbbell, and the amount of steel is reduced under the condition of ensuring the strength.
所述相邻预制混凝土剪力墙的对齐连接处的两个锚固钢筋横截面圆心之间的距离和金属连接件中两个圆孔的圆心距相等。The distance between the centers of the cross-sections of the two anchor bars at the aligned joints of the adjacent prefabricated concrete shear walls is equal to the distance between the centers of the two circular holes in the metal connector.
一种干式连接混凝土剪力墙的墙干式连接方法,其特征是:具体步骤如下:A wall dry connection method for dry connection of concrete shear walls is characterized in that: the specific steps are as follows:
步骤1:将套筒套在预制混凝土剪力墙的竖向钢筋的上端并固定;Step 1: Put the sleeve on the upper end of the vertical reinforcement of the precast concrete shear wall and fix it;
步骤2:将另一预制混凝土剪力墙的竖向钢筋的下端对准步骤1中预制混凝土剪力墙上端的套筒并下落;Step 2: Align the lower end of the vertical steel bar of another precast concrete shear wall with the sleeve at the top of the precast concrete shear wall in step 1 and drop it;
步骤3:将金属连接件的圆孔对齐上述预制混凝土剪力墙的对齐连接处的两个锚固钢筋两侧安装上;Step 3: Align the round holes of the metal connectors with the two anchor bars at the alignment joints of the above-mentioned precast concrete shear walls and install them on both sides;
步骤4:在上述预制混凝土剪力墙的对齐连接处的两个锚固钢筋两端用螺母进行加固;Step 4: Reinforce with nuts at both ends of the two anchor bars at the aligned joints of the above-mentioned precast concrete shear walls;
步骤5:根据需要重复上述步骤1-4即可得到所需大小的干式连接混凝土剪力墙。Step 5: Repeat the above steps 1-4 as needed to obtain a dry-connected concrete shear wall of the required size.
与现有技术相比,本发明所具有的有益效果为:Compared with prior art, the beneficial effect that the present invention has is:
本发明连接方式采用干作业施工,简化施工;连接可靠,整体性好,具有优越的抗震性能,刚度显著提升,并降低连接件数量,显著提升其工业化效率,降低资源及能源消耗,并可以实现通用化,标准化。The connection method of the present invention adopts dry operation construction, which simplifies construction; the connection is reliable, the integrity is good, it has superior seismic performance, the stiffness is significantly improved, and the number of connectors is reduced, the industrialization efficiency is significantly improved, resource and energy consumption is reduced, and it can realize Generalization, standardization.
附图说明Description of drawings
以下结合附图对本发明做进一步的描述:The present invention will be further described below in conjunction with accompanying drawing:
图1为本发明预制混凝土剪力墙与墙干式连接方法示意图;Fig. 1 is the schematic diagram of prefabricated concrete shear wall of the present invention and wall dry type connection method;
图2为本发明预制混凝土剪力墙与墙干式连接方法未安装前两墙摆放位置示意图;Fig. 2 is a schematic diagram of the placement position of the two walls before the prefabricated concrete shear wall and the wall dry connection method of the present invention are not installed;
图3为本发明本发明预制混凝土剪力墙与墙干式连接方法未安装前两墙摆放位置左视图示意图;Fig. 3 is a schematic diagram of the left side view of the precast concrete shear wall and the wall dry connection method of the present invention before the installation of the two walls;
图4为本发明预制混凝土剪力墙与墙干式连接方法安装后左视图示意图;Fig. 4 is the schematic diagram of the left side view after installation of the precast concrete shear wall and the wall dry connection method of the present invention;
图5为本发明预制混凝土剪力墙与墙干式连接方法金属连接件示意图;Fig. 5 is a schematic diagram of the metal connector of the prefabricated concrete shear wall and the dry wall connection method of the present invention;
其中:1为套筒;2为锚固钢筋;3为螺母;4为金属连接件;4-1为金属连接件上的圆孔;5为预制混凝土剪力墙;5-1为竖向钢筋。Among them: 1 is a sleeve; 2 is an anchoring steel bar; 3 is a nut; 4 is a metal connector; 4-1 is a round hole on the metal connector; 5 is a prefabricated concrete shear wall; 5-1 is a vertical steel bar.
具体实施方式detailed description
以下结合图1-5对本发明的技术方案进行详细的描述:Below in conjunction with Fig. 1-5 technical scheme of the present invention is described in detail:
一种干式连接混凝土剪力墙,预制混凝土剪力墙5内竖向均匀设置有竖向钢筋5-1,预制混凝土剪力墙5内上下两侧横向设置有锚固钢筋2,竖向钢筋5-1与锚固钢筋2采用焊接形式连接;相邻预制混凝土剪力墙5的竖向钢筋5-1在其对齐处的使用套筒1连接;金属连接件4两端分别设置有圆孔4-1,相邻预制混凝土剪力墙5对齐连接处的两个锚固钢筋2的两端通过金属连接件4圆孔4-1对齐连接;锚固钢筋2的两端设置有螺纹,通过螺母3将金属连接件4紧固在锚固钢筋2的两端;套筒1直径大于所述的锚固钢筋2的直径。竖向钢筋5-1两端露出的长度小于或等于套筒1的长度;金属连接件4的圆孔4-1直径略大于锚固钢筋2的直径;金属连接件4的横截面为哑铃形状;相邻预制混凝土剪力墙5的对齐连接处的两个锚固钢筋2横截面圆心之间的距离和金属连接件4中两个圆孔4-1的圆心距相等。A dry-connected concrete shear wall, the prefabricated concrete shear wall 5 is vertically uniformly provided with vertical steel bars 5-1, and the upper and lower sides of the precast concrete shear wall 5 are horizontally provided with anchor steel bars 2 and vertical steel bars 5 -1 is connected with the anchoring reinforcement 2 by welding; the vertical reinforcement 5-1 of the adjacent precast concrete shear wall 5 is connected with the sleeve 1 at its alignment; the two ends of the metal connector 4 are respectively provided with round holes 4- 1. The two ends of the two anchor bars 2 at the alignment connection of the adjacent precast concrete shear walls 5 are aligned and connected through the round holes 4-1 of the metal connector 4; The connecting piece 4 is fastened to both ends of the anchoring steel bar 2; the diameter of the sleeve 1 is larger than the diameter of the anchoring steel bar 2. The length exposed at both ends of the vertical steel bar 5-1 is less than or equal to the length of the sleeve 1; the diameter of the round hole 4-1 of the metal connector 4 is slightly larger than the diameter of the anchoring steel bar 2; the cross section of the metal connector 4 is in the shape of a dumbbell; The distance between the centers of the cross-sections of the two anchor bars 2 at the aligned joints of the adjacent precast concrete shear walls 5 is equal to the distance between the centers of the two circular holes 4-1 in the metal connector 4 .
一种干式连接混凝土剪力墙的墙干式连接方法,其特征是:具体步骤如下:A wall dry connection method for dry connection of concrete shear walls is characterized in that: the specific steps are as follows:
步骤1:将套筒1套在预制混凝土剪力墙5的竖向钢筋5-1的上端并固定;Step 1: Put the sleeve 1 on the upper end of the vertical steel bar 5-1 of the precast concrete shear wall 5 and fix it;
步骤2:将另一预制混凝土剪力墙5的竖向钢筋5-1的下端对准步骤1中预制混凝土剪力墙5上端的套筒1并下落;Step 2: Align the lower end of the vertical steel bar 5-1 of another precast concrete shear wall 5 with the sleeve 1 at the upper end of the precast concrete shear wall 5 in step 1 and drop it;
步骤3:将金属连接件4的圆孔4-1对齐上述预制混凝土剪力墙5的对齐连接处的两个锚固钢筋2两侧安装上;Step 3: Align the round hole 4-1 of the metal connector 4 with the two anchor bars 2 at the alignment joint of the above-mentioned precast concrete shear wall 5 and install them on both sides;
步骤4:在上述预制混凝土剪力墙5的对齐连接处的两个锚固钢筋2两端用螺母3进行加固;Step 4: Reinforce with nuts 3 at both ends of the two anchor bars 2 at the aligned joints of the above-mentioned precast concrete shear walls 5;
步骤5:根据需要重复上述步骤1-4即可得到所需大小的干式连接混凝土剪力墙。Step 5: Repeat the above steps 1-4 as needed to obtain a dry-connected concrete shear wall of the required size.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054950.8A CN106639042A (en) | 2016-11-25 | 2016-11-25 | Dry type connected concrete shear wall and dry type wall connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054950.8A CN106639042A (en) | 2016-11-25 | 2016-11-25 | Dry type connected concrete shear wall and dry type wall connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106639042A true CN106639042A (en) | 2017-05-10 |
Family
ID=58812075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611054950.8A Withdrawn CN106639042A (en) | 2016-11-25 | 2016-11-25 | Dry type connected concrete shear wall and dry type wall connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639042A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118817A (en) * | 2018-02-06 | 2018-06-05 | 浙江大学建筑设计研究院有限公司 | A kind of plate end does not go out the unidirectional superimposed sheet bottom plate and its construction method of muscle |
| CN108643395A (en) * | 2018-07-24 | 2018-10-12 | 华北理工大学 | A kind of prefabricated prestressing Self-resetting shear wall structure and its construction method |
| CN109440962A (en) * | 2018-11-27 | 2019-03-08 | 刘祥锦 | The horizontal joint connecting node and its height calculation method of precast shear wall edge member |
| CN113585534A (en) * | 2021-08-16 | 2021-11-02 | 漯河职业技术学院 | Assembled shear force wall |
-
2016
- 2016-11-25 CN CN201611054950.8A patent/CN106639042A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118817A (en) * | 2018-02-06 | 2018-06-05 | 浙江大学建筑设计研究院有限公司 | A kind of plate end does not go out the unidirectional superimposed sheet bottom plate and its construction method of muscle |
| CN108643395A (en) * | 2018-07-24 | 2018-10-12 | 华北理工大学 | A kind of prefabricated prestressing Self-resetting shear wall structure and its construction method |
| CN108643395B (en) * | 2018-07-24 | 2023-05-26 | 华北理工大学 | Prefabricated assembly type prestress self-resetting shear wall structure and construction method thereof |
| CN109440962A (en) * | 2018-11-27 | 2019-03-08 | 刘祥锦 | The horizontal joint connecting node and its height calculation method of precast shear wall edge member |
| CN109440962B (en) * | 2018-11-27 | 2024-05-17 | 刘祥锦 | Horizontal joint connection node of prefabricated shear wall edge component and height calculation method thereof |
| CN113585534A (en) * | 2021-08-16 | 2021-11-02 | 漯河职业技术学院 | Assembled shear force wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103758291B (en) | A kind of shearing enhancement mode half grout sleeve | |
| CN103758292B (en) | The full grout sleeve of a kind of shearing enhancement mode | |
| CN106677433A (en) | Self-tightening half grouting sleeve connecting piece | |
| CN103899044B (en) | Embedded pyramidal full grout sleeve | |
| CN204983143U (en) | End muscle precast concrete frame construction excels in | |
| CN106121107A (en) | Assemble type concrete slab and plate dry type method of attachment thereof | |
| CN106639042A (en) | Dry type connected concrete shear wall and dry type wall connecting method | |
| CN103541433B (en) | Assembly concrete hook-hang type node | |
| CN103541495B (en) | Connecting box assembly concrete beam | |
| CN206428805U (en) | A kind of concrete prefabricated balcony of assembled steel | |
| CN108179842A (en) | A kind of assembled steel tube confined concrete models and its production technology | |
| CN209468856U (en) | A kind of assembly concrete column beam connecting node | |
| CN109296074A (en) | A prefabricated concrete column-beam connection node | |
| CN206722139U (en) | A kind of assembled integral shear wall building structure | |
| CN207079756U (en) | A kind of dry type connects concrete shear force wall | |
| CN203846660U (en) | Prefabricated assembled type open-web net rack for reinforced concrete | |
| CN107747378A (en) | The body composite board processing method of Fast Installation heat insulation decorative load-bearing one | |
| CN103541435B (en) | With the cross node of full assembling of steel plate concrete Cantilever Beams | |
| CN208088577U (en) | A kind of day box compound shear wall of shaped steel | |
| CN111809729A (en) | A dry connection node for prefabricated concrete beams and columns | |
| CN205976532U (en) | Sleeve grout connection structure and wall body | |
| CN204899034U (en) | Prefabricated wall post | |
| CN206267423U (en) | A kind of half grout sleeve connector of self-tightening type | |
| CN206016048U (en) | Assemble type concrete slab | |
| CN103541434B (en) | The complete cross Combined concrete node of assembled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170510 |