CN104864106A - Metal hard sealing butterfly valve with moving valve seat - Google Patents
Metal hard sealing butterfly valve with moving valve seat Download PDFInfo
- Publication number
- CN104864106A CN104864106A CN201510273329.XA CN201510273329A CN104864106A CN 104864106 A CN104864106 A CN 104864106A CN 201510273329 A CN201510273329 A CN 201510273329A CN 104864106 A CN104864106 A CN 104864106A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- sealing
- seat
- circular seal
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 239000002184 metal Substances 0.000 title claims abstract description 41
- 238000009434 installation Methods 0.000 claims description 6
- 230000000875 corresponding Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 238000007906 compression Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002457 bidirectional Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/228—Movable sealing bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
Abstract
Provided is a metal hard sealing butterfly valve with a moving valve seat. A first metal expansion joint is connected between the front end of the round sealing valve base and a valve body, a second metal expansion joint is connected between the rear end of the round sealing valve base and a valve body flange, and a valve seat driving device is connected between the round sealing valve seat and the valve body and drives the round sealing valve seat to move left and right along the axis of the valve body. When the valve is in the closed state, the round sealing valve seat moves to the position where the round sealing valve seat is connected with a valve plate in a sealing mode, and when the valve is in the open state, the round sealing valve seat moves to the position where the round sealing valve seat is separated from the valve plate. The metal hard sealing butterfly valve has the advantages that the two-way pressure bearing and sealing performance is achieved, and the effect of the valve seat driving device can guarantee the sealing specific pressure of a sealing pair; the spherical surface or regular conical surface metal hard sealing pair is adopted for the valve plate and the valve seat, the machining process is simple, the sealing pair can achieve surface contact easily, and the interchangeability of the sealing structure is good; the sealing valve seat is of a horizontal moving structure, and therefore the opening or closing movement is reliable.
Description
Technical field
The present invention relates to a kind of metal hard-sealing butterfly valve applied in metal hard-sealing butterfly valve manufacture and fluid line, relates to the portable metal hard-sealing butterfly valve of a kind of valve seat particularly.
Background technique
Metal hard-sealing butterfly valve is because its structure is simple, opening and closing moment is relatively little, easy to use and be widely used in the break-make of pipeline fluid.In order to improve the working pressure of metal hard-sealing butterfly valve and ensure start-stop performance flexibility and reliability, existing metal hard-sealing butterfly valve, because its valve body and seal valve seat are fixed structure, realize rotation and the sealing of valve plate, its structural type many employings three eccentricity structure, between valve plate with seal valve seat, coordinating of sealing pair adopts surface of revolution to coordinate, and technically has the following disadvantages:
1, processing request is high.The sealing pair of eccentric structure metal hard-sealing butterfly valve is anon-normal cone surface of revolution, requires high to process equipment configuration, control process, and sealing pair need match processing, and interchangeability is poor, and manufacturing process cost is high.
2, sealing pair material requirements is strict.Consider metal hard-sealing butterfly valve in use by factors such as temperature variation, fluid scouring, blind flange force effects, guarantee anon-normal cone surface of revolution sealing pair reliability, high to sealing pair material performance requirement, manufactured materials cost is high.
3, sealing reliability is poor.The switch of metal hard-sealing butterfly valve and sealing compress action, are realized by valve shaft transmitting torque by driving mechanism, and the extruding of sealing pair, distortion and wear extent exceed certain limit, will the sealability of the whole valve body of impact.When runner medium is adverse current, need reverse pressure-bearing, along with the increase of pressure medium, when the unit positive pressure sealed between valve plate and valve seat is less than medium pressure, valve plate will be backed down, and starts to occur leaking.
4, the easy jam of valve plate.Metal hard-sealing butterfly valve will reach sealability, needs extruding suitable between sealing pair, distortion, and when runner medium positive flow state, more high sealing extruding is tighter for pressure medium, easily cause valve plate seal ring and valve seat stuck, cause valve cannot action.
Summary of the invention
The object of this invention is to provide the portable metal hard-sealing butterfly valve of a kind of valve seat, the action of driving mechanism is overlapped by the valve plate driving device of valve and valve seat drive unit two, realize valve switch flexible, bidirectional bearing good seal performance, reaches pipeline fluid medium and cuts logical reliably.
Technological scheme of the present invention is:
The portable metal hard-sealing butterfly valve of a kind of valve seat, comprise valve body, valve plate, valve shaft, circular seal valve seat, valve plate driving device and valve flange, wherein said valve plate is arranged in valve flowing channel, be connected with valve plate driving device by valve shaft again, described valve plate and circular seal valve seat form metal-seated, it is characterized in that: between described circular seal valve seat front end and valve body, be connected with the first type metal expansion joint, the second type metal expansion joint is connected with between described circular seal valve seat rear end and valve flange, valve seat drive unit is connected with between described circular seal valve seat and valve body, circular seal valve seat is driven to move left and right along valve axis by described valve seat drive unit, in valve closed condition, described circular seal valve seat moves to the position engaging with valve plate and seal, and in valve open mode, described circular seal valve seat moves to the position be separated with valve plate.
Technological scheme also comprises more specifically: the metal-seated that described valve plate and described circular seal valve seat form is sphere or conical surface metal-seated.
Further: described circular seal valve seat has overhanging installation convex shoulder, is equipped with valve body convex shoulder in valve outer wall corresponding positions, described valve seat drive unit is oil cylinder, and its two ends are connected with the installation convex shoulder of circular seal valve seat, the valve body convex shoulder of valve body respectively.
Further: described valve body is connected with valve flange by the pull bar that is rigidly connected.
Further: the spin axis of described valve plate is positioned on valve axis.
Further: the sealing plane center of the axis deviation valve plate of the rotary valve shaft of described valve plate.
Advantage of the present invention is:
1, there is bidirectional bearing sealability.The valve plate rotary switch action of valve is performed by a set of driving mechanism, and the sealing compression action of valve plate and seal valve seat is performed by another set of driving mechanism, and the action of sealing compression is straight line motion, and sealing pair uniform force, load performance is good.When particularly reverse pressure-bearing causes valve plate to be out of shape displacement, by the effect of valve seat drive unit, the seal pressure of sealing pair can be ensured, ensure that the two way sealed performance of valve.
2, manufacturing process is simple.Valve plate and valve seat adopt sphere or positive conical surface metal hard-sealing pair, and processing technology is simple, and sealing pair easily realizes face contact, and the interchangeability of sealing configuration is good.
3, valve event is reliable.Seal valve seat adopts flat portable structure, and valve plate and seal valve seat seal contact process and rub without relative sliding, wear phenomenon can not occur.Sealing pair is thrown off easily, can not cause valve plate jam.
Accompanying drawing explanation
Accompanying drawing is for illustration of embodiments of the invention.
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is A direction view of accompanying drawing 1.
Accompanying drawing 3 is that structure shown in Fig. 1 is in closed condition structural representation.
Accompanying drawing 4 is that structure shown in Fig. 1 is in sealing pair exploded perspective schematic diagram.
Accompanying drawing 5 is that structure shown in Fig. 1 is in valve plate open mode structural representation.
In accompanying drawing, each parts are detailed as follows: 1, valve body, and 2, valve plate, 3, valve shaft, 4, circular seal valve seat, 5, valve seat drive unit, the 6, first type metal expansion joint, the 7, second type metal expansion joint, 8, valve flange, 9, be rigidly connected pull bar, 10, valve plate driving device.
Embodiment
As Fig. 1, shown in 2, the present embodiment comprises valve body 1, valve plate 2, valve shaft 3, circular seal valve seat 4 and valve plate driving device 10, valve plate 2 is fixed on valve shaft 3, the rotation acting on lower valve shaft 3 at valve plate driving device 10 can realize the motion of switch rotary, valve plate 2 and circular seal valve seat 4 form sphere or conical surface metal hard-sealing is secondary, circular seal valve seat 4 has overhanging installation convex shoulder, valve body convex shoulder is equipped with in valve body 1 outer wall corresponding positions, described valve seat drive unit 5 is oil cylinder, its two ends respectively with the installation convex shoulder of circular seal valve seat 4, the valve body convex shoulder of valve body 1 connects, circular seal valve seat 4 is driven to move left and right along valve axis by the driving effect of valve seat drive unit 5, the compression between circular seal valve seat 4 with valve plate 2 sealing pair can be realized and be separated.
One end of described circular seal valve seat 4 is connected to valve body 1 by the first expansion of metal pitch circle 6, utilizes the telescopicing performance of the first type metal expansion joint 6, and circular seal valve seat 4 relatively valve body 1 relative displacement can occur.
The other end of described circular seal valve seat 4 is connected to valve flange 8 by the second type metal expansion joint 7, utilizes the telescopicing performance of the second type metal expansion joint 7, and circular seal valve seat 4 relatively valve flange 8 relative displacement can occur.
Described valve body 1 connects into a structural entity with valve flange 8 by the pull bar 9 that is rigidly connected, and the pull bar 9 that is rigidly connected bears blind flange force.
The sealing plane center of the axis deviation valve plate 2 of the rotary valve shaft 3 of described valve plate 2.
The operating process of the present embodiment is:
1, valve state is by closing → opening process: when butterfly valve is in closed condition, as shown in Figure 3; Stretched in circular seal valve seat 4, first type metal expansion joint 6 by the thrust of valve seat drive unit 5, the second type metal expansion joint 7 compresses, and the sealing pair between circular seal valve seat 4 with valve plate 2 is separated, as shown in Figure 4; Drive valve shaft 3 by valve plate driving device 10 again and drive valve plate 2 90-degree rotation, butterfly valve is opened, as shown in Figure 5.
2, valve state is by opening → closing process: when butterfly valve is in opening state, as shown in Figure 5: drive valve shaft 3 by valve plate driving device 10 and drive valve plate 2 90-degree rotation, as shown in Figure 4; Act on circular seal valve seat 4, first type metal expansion joint 6 by the pulling force of valve seat drive unit 5 again to compress, the second type metal expansion joint 7 stretches, and the sealing pair between circular seal valve seat 4 and valve plate 2 compresses, and butterfly valve cuts out, as shown in Figure 3.
Claims (6)
1. the portable metal hard-sealing butterfly valve of valve seat, comprise valve body (1), valve plate (2), valve shaft (3), circular seal valve seat (4), valve plate driving device (10) and valve flange (8), wherein said valve plate (2) is arranged in valve body (1) runner, be connected with valve plate driving device (10) by valve shaft (3) again, described valve plate (2) and circular seal valve seat (4) form metal-seated, it is characterized in that: between described circular seal valve seat (4) front end and valve body (1), be connected with the first type metal expansion joint (6), the second type metal expansion joint (7) is connected with between described circular seal valve seat (4) rear end and valve flange (8), valve seat drive unit (5) is connected with between described circular seal valve seat (4) and valve body (1), circular seal valve seat (4) is driven to move left and right along valve axis by described valve seat drive unit (5), in valve closed condition, described circular seal valve seat (4) moves to and engages with valve plate (2) position sealed, and in valve open mode, described circular seal valve seat (4) moves to the position be separated with valve plate (2).
2. the portable metal hard-sealing butterfly valve of valve seat according to claim 1, is characterized in that: the metal-seated that described valve plate (2) and described circular seal valve seat (4) form is sphere or conical surface metal-seated.
3. the portable metal hard-sealing butterfly valve of valve seat according to claim 1 and 2, it is characterized in that: described circular seal valve seat (4) has overhanging installation convex shoulder, valve body convex shoulder is equipped with in valve body (1) outer wall corresponding positions, described valve seat drive unit (5) is oil cylinder, and its two ends are connected with the installation convex shoulder of circular seal valve seat (4), the valve body convex shoulder of valve body (1) respectively.
4. the portable metal hard-sealing butterfly valve of valve seat according to claim 1, is characterized in that: described valve body (1) is connected with valve flange (8) by the pull bar that is rigidly connected (9).
5. the portable metal hard-sealing butterfly valve of valve seat according to claim 1 and 2, is characterized in that: the spin axis of described valve plate (2) is positioned on valve axis.
6. the portable metal hard-sealing butterfly valve of valve seat according to claim 1 and 2, is characterized in that: the sealing plane center of the axis deviation valve plate (2) of the rotary valve shaft (3) of described valve plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273329.XA CN104864106A (en) | 2015-05-26 | 2015-05-26 | Metal hard sealing butterfly valve with moving valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273329.XA CN104864106A (en) | 2015-05-26 | 2015-05-26 | Metal hard sealing butterfly valve with moving valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104864106A true CN104864106A (en) | 2015-08-26 |
Family
ID=53910151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510273329.XA Pending CN104864106A (en) | 2015-05-26 | 2015-05-26 | Metal hard sealing butterfly valve with moving valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104864106A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506516A (en) * | 2018-03-14 | 2018-09-07 | 台州芮迪阀门股份有限公司 | A kind of long-life ball valve |
| CN109780233A (en) * | 2019-03-20 | 2019-05-21 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Valve and drainage arrangement |
| CN109826961A (en) * | 2019-01-26 | 2019-05-31 | 温州燧人智能科技有限公司 | A kind of pulp shooting machine that sealing effect is good |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB942795A (en) * | 1959-06-02 | 1963-11-27 | Atomic Energy Authority Uk | Improvements in or relating to butterfly valves |
| US4171689A (en) * | 1977-01-29 | 1979-10-23 | Robert Bosch Gmbh | Device for the control of gas admissions into the induction manifold of an internal combustion engine |
| JP2001248738A (en) * | 2000-03-06 | 2001-09-14 | Kubota Corp | Seat structure of eccentric butterfly valve |
| CN101382199A (en) * | 2008-10-22 | 2009-03-11 | 河北工业大学 | Zero-friction hard-sealing butterfly valve |
| CN101725725A (en) * | 2008-10-31 | 2010-06-09 | 江苏神通阀门股份有限公司 | Gate valve |
| CN101749441A (en) * | 2010-01-08 | 2010-06-23 | 武汉策尔曼自动化设备有限公司 | Vacuum interruption flexible sealing connection rod butterfly valve |
| CN102384274A (en) * | 2011-11-17 | 2012-03-21 | 株洲南方阀门股份有限公司 | Double-seal butterfly valve with maintenance sealing system |
| CN202469025U (en) * | 2012-03-14 | 2012-10-03 | 漳州立强五金机械有限公司 | Novel butterfly valve |
| CN202955242U (en) * | 2012-11-25 | 2013-05-29 | 程汉章 | Double eccentric flexible butterfly valve |
| CN103225699A (en) * | 2013-03-29 | 2013-07-31 | 成都瑞柯林工程技术有限公司 | Glasses valve and valve plate guide drive mechanism thereof |
| CN203176383U (en) * | 2012-08-20 | 2013-09-04 | 中阀科技(长沙)阀门有限公司 | Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system |
| CN204755948U (en) * | 2015-05-26 | 2015-11-11 | 柳州钢铁股份有限公司 | Portable metal of disk seat butterfly valve sealed firmly |
-
2015
- 2015-05-26 CN CN201510273329.XA patent/CN104864106A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB942795A (en) * | 1959-06-02 | 1963-11-27 | Atomic Energy Authority Uk | Improvements in or relating to butterfly valves |
| US4171689A (en) * | 1977-01-29 | 1979-10-23 | Robert Bosch Gmbh | Device for the control of gas admissions into the induction manifold of an internal combustion engine |
| JP2001248738A (en) * | 2000-03-06 | 2001-09-14 | Kubota Corp | Seat structure of eccentric butterfly valve |
| CN101382199A (en) * | 2008-10-22 | 2009-03-11 | 河北工业大学 | Zero-friction hard-sealing butterfly valve |
| CN101725725A (en) * | 2008-10-31 | 2010-06-09 | 江苏神通阀门股份有限公司 | Gate valve |
| CN101749441A (en) * | 2010-01-08 | 2010-06-23 | 武汉策尔曼自动化设备有限公司 | Vacuum interruption flexible sealing connection rod butterfly valve |
| CN102384274A (en) * | 2011-11-17 | 2012-03-21 | 株洲南方阀门股份有限公司 | Double-seal butterfly valve with maintenance sealing system |
| CN202469025U (en) * | 2012-03-14 | 2012-10-03 | 漳州立强五金机械有限公司 | Novel butterfly valve |
| CN203176383U (en) * | 2012-08-20 | 2013-09-04 | 中阀科技(长沙)阀门有限公司 | Double-seal turbine water inlet butterfly valve and double-seal turbine water inlet valve system |
| CN202955242U (en) * | 2012-11-25 | 2013-05-29 | 程汉章 | Double eccentric flexible butterfly valve |
| CN103225699A (en) * | 2013-03-29 | 2013-07-31 | 成都瑞柯林工程技术有限公司 | Glasses valve and valve plate guide drive mechanism thereof |
| CN204755948U (en) * | 2015-05-26 | 2015-11-11 | 柳州钢铁股份有限公司 | Portable metal of disk seat butterfly valve sealed firmly |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506516A (en) * | 2018-03-14 | 2018-09-07 | 台州芮迪阀门股份有限公司 | A kind of long-life ball valve |
| CN109826961A (en) * | 2019-01-26 | 2019-05-31 | 温州燧人智能科技有限公司 | A kind of pulp shooting machine that sealing effect is good |
| CN109826961B (en) * | 2019-01-26 | 2020-08-14 | 温州燧人智能科技有限公司 | Sealed effectual patching machine |
| CN109780233A (en) * | 2019-03-20 | 2019-05-21 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Valve and drainage arrangement |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |