CN108591514A - A kind of protection valve seat ball valve - Google Patents
A kind of protection valve seat ball valve Download PDFInfo
- Publication number
- CN108591514A CN108591514A CN201810508619.1A CN201810508619A CN108591514A CN 108591514 A CN108591514 A CN 108591514A CN 201810508619 A CN201810508619 A CN 201810508619A CN 108591514 A CN108591514 A CN 108591514A
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- adjusting set
- valve seat
- bar
- 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- Withdrawn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
Classifications
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- 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
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The present invention relates to a kind of protection valve seat ball valves, it is characterised in that：The runner bottom surface is provided with locating slot and straight trough,The locating slot centered on the ball valve vertical axis line at fan arcuate structure,Straight trough is arranged in the underface of the ball valve horizontal axis,The straight trough one end is communicated with one end of locating slot,The straight trough other end stretches to runner mouth nearby,Regulating device is equipped in the runner,The regulating device includes ball clack,Compressed spring,Telescopic rod,Drawstring,Locating rod and adjusting set,It is equipped with the axis lower outer bar consistent with adjusting set axis and lower interior bar in valve body middle and lower part,Lower outer bar upper end forms a fixed connection with adjusting set,Valve body lower end portion is stretched out in lower outer bar lower end,Lower interior bar is placed in the inside of lower outer bar,Lower interior bar upper end is equipped with cylinder,The lower interior bar upper end is stretched into adjusting set,And it is connect with the drawstring end in adjusting set is stretched into,Lower outer bar lower face is stretched out in lower interior bar lower end,It is good with valve seat protection against erosion,Service life is long,Safe advantage.
Description
Technical field
The present invention relates to a kind of ball valves, more particularly, to a kind of protection valve seat ball valve.
Background technology
Existing ball valve, includes mainly valve body, valve seat, sphere and upper valve rod, and sphere is placed in body cavity, energy is equipped in sphere
The runner communicated with body cavity, valve seat are made of non-metallic plastic material, can be formed and be sealed with outer surface of spheroid, sphere is by valve
Bar drives and makees 90 degree of rotary motions around ball valve axis, the open and close with valve seat cooperation for fluid, its shortcoming is that：
During sphere opens and closes, part valve seat can be detached from spherome surface, and the medium of ball valve inlet side can pass through valve seat and ball
Gap between body surface face is flowed to ball valve outlet side, and the medium of the flowing of medium, especially high-voltage high-speed can be to valve seat table
Face is washed away, and to destroy valve seat, causes valve leak, service life short.
Invention content
For technological deficiency existing in the prior art, a kind of valve seat protection against erosion of present invention offer is good, service life is long,
A kind of safe protection valve seat ball valve.
The present invention realizes by following technical solution：
A kind of protection valve seat ball valve, including：Valve body, sphere, valve seat, filler, gland, connecting bracket and upper valve rod, in valve body
Portion upper end is equipped with connecting flange and packing groove, and filler is fixedly installed in packing groove by gland, and connecting bracket is fastened by standard
Part is mounted at the connecting flange, and upper valve rod upper end is equipped with the keyway being connect with external driver device, and upper valve rod lower end passes through and fills out
Hopper stretches into body cavity and is connect with sphere, and sphere is placed in body cavity, and outer surface of spheroid is spherical surface structure, is set in sphere
There are the runner that can be communicated with body cavity, valve seat that body cavity is made and be vertically provided at of non-metallic plastic material, valve seat is set
There are the sealing surface of seat for forming sealing with outer surface of spheroid, sphere to be driven by upper valve rod and around 90 degree of rotations of the ball valve vertical axis
Turn, to be turned on and off the ball valve, it is characterised in that：The runner bottom surface is provided with locating slot and straight trough, the locating slot with
Line is arranged at fan arcuate structure, straight trough in the underface of the ball valve horizontal axis centered on the ball valve vertical axis, the straight trough one
End is communicated with one end of locating slot, which stretches to runner mouth nearby；Regulating device, the tune are equipped in the runner
Regulating device includes ball clack, compressed spring, telescopic rod, locating rod, drawstring and adjusting set, and adjusting set is at inverted bucket shape structure, and with this
Line is vertically provided in runner centered on the vertical axis of ball valve, and ball clack one end is equipped with the ball consistent with outer surface of spheroid radius
Shape surface, ball clack outer circle is consistent with the size of runner mouth diameter, and telescopic rod is laterally arranged, which is fixed at
Ball clack other end, the telescopic rod other end are fixedly connected with one end of drawstring, and the other end of drawstring stretches into adjusting set, positioning
Bar is vertically arranged, which is fixed on telescopic rod, and locating rod lower end is stretched into locating slot, and compressed spring is laterally arranged
Between ball clack and adjusting set；It is equipped with the axis lower outer bar consistent with adjusting set axis and lower interior bar in valve body middle and lower part, under
Outer bar upper end forms a fixed connection with adjusting set, and valve body lower end portion is stretched out in lower outer bar lower end, and lower interior bar is placed in the inside of lower outer bar,
Lower interior bar upper end is equipped with cylinder, which stretches into adjusting set, and connect with the drawstring end in adjusting set is stretched into,
Lower outer bar lower face is stretched out in lower interior bar lower end, is equipped in the lower interior bar lower end and holds block.
Further, the lower outer bar is mounted on valve body middle and lower part by briquetting, and briquetting is threadedly attached in valve body
The lower end of lower end, lower outer bar is equipped with adjusting block.
Further, retaining block is installed at the packing groove, the retaining block by standard fasteners fix filler with
Between filler groove bottom.
Further, be equipped with O-ring seal between the lower outer bar and valve body lower portion, the lower outer bar and lower interior bar it
Between be equipped with O-ring seal.
Further, the seat material is polytetrafluoroethylene (PTFE).
Further, the valve body is made of left and right valve body, and left and right valve body is fixedly mounted on by standard fasteners
Together.
Further, the drawstring material is fibrous material.
Further, the drawstring material is nylon.
A kind of application method of protection valve seat ball valve:
It is as follows to close a kind of application method of protection valve seat ball valve:
A. lower outer bar is rotated, drives adjusting set, telescopic rod, locating rod, compressed spring, drawstring and ball clack together along locating slot
Shape rotates,
B. when locating rod reaches straight trough position, ball clack is moved along straight trough to runner mouth under the promotion of compressed spring, finally
Ball clack
Runner mouth is rested on, ball clack outer surface forms one with outer surface of spheroid,
C. it is rotated further by upper valve rod to rotate at 90 degree, closes a kind of protection valve seat ball valve, valve is closed at this time；
It is as follows to open a kind of application method of protection valve seat ball valve:
A. rotation upper valve rod is rotated at 90 degree first, and the import that runner mouth is directed at the ball valve is made to go out,
B. lower interior bar is rotated again, and part drawstring is made to be wrapped in the surface of lower interior bar upper end cylinder, pulling of the telescopic rod in drawstring
Under,
It drives locating rod to be detached from straight trough, while ball clack being driven to be detached from runner mouth,
C. lower outer bar is rotated again, and ball clack, compressed spring, drawstring, telescopic rod, locating rod is driven to return to raw bits along locating slot
It sets, at this time valve opening.
The advantage of the invention is that：Runner position be equipped with regulating device, during valve opening, closing, the valve into
The medium of mouth side will not be flowed by the gap between outer surface of spheroid and sealing surface of seat to outlet side, and medium will not be to valve seat
Sealing surface is washed away, the effective service life for extending valve seat；Retaining block is installed, it is ensured that replacing filler at packing groove
When, it prevents upper valve rod from flying out under the action of pressure medium, has the advantages that safe；Lower outer bar and lower interior bar are set
It sets, has the advantages that easy to adjust；The simple, convenient, and reliable property of application method of the valve is high.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode：
As can be seen from FIG. 1, a kind of protection valve seat ball valve, including：Valve body 1, sphere 2, valve seat 3, filler 13, gland 14, connection
Holder 15 and upper valve rod 12,1 middle part upper end of valve body are equipped with connecting flange and packing groove, and filler 13 is fixedly installed in by gland 14 and is filled out
At hopper, connecting bracket 15 is mounted on by standard fasteners at the connecting flange, and 12 upper end of upper valve rod is equipped with and external drive
The keyway of device connection, 12 lower end of upper valve rod are stretched into 1 inner cavity of valve body across packing groove and are connect with sphere 2, and sphere 2 is placed in valve body 1
Inner cavity, 2 outer surface of sphere are spherical surface structure, are equipped with the runner that can be communicated with 1 inner cavity of valve body in sphere 2, valve seat 3 is by non-gold
Belong to plastic material and be made and be vertically provided at 1 inner cavity of valve body, valve seat 3 is equipped with the valve base sealing for forming sealing with 2 outer surface of sphere
Face, sphere 2 is driven by upper valve rod 12 and around 90 degree of rotation of the ball valve vertical axis, to be turned on and off the ball valve, in the stream
Road bottom surface is provided with locating slot 8 and straight trough, the locating slot 8 centered on the ball valve vertical axis line at fan arcuate structure, straight trough
It is arranged in the underface of the ball valve horizontal axis, which communicates with one end of locating slot 8, which stretches to just
Close runner mouth；Regulating device is equipped in the runner, which includes ball clack 4, compressed spring 5, telescopic rod 6, positioning
Bar 7, drawstring 16 and adjusting set 11, adjusting set 11 is at inverted bucket shape structure, and line is vertically set centered on the vertical axis of the ball valve
It sets in runner, 4 one end of ball clack is equipped with the spherical surface consistent with 2 appearance radius surface of sphere, and 4 outer circle of ball clack and runner mouth are straight
The size of diameter is consistent, and laterally setting, 6 one end of telescopic rod are fixed at 4 other end of ball clack to telescopic rod 6, the telescopic rod 6
The other end is fixedly connected with one end of drawstring 16, and the other end of drawstring 16 stretches into adjusting set 11, and locating rod 7 is vertically arranged, should
7 upper end of locating rod is fixed on telescopic rod 6, and 7 lower end of locating rod is stretched into locating slot 8, and compressed spring 5 is horizontally installed on ball clack 4
Between adjusting set 11；It is equipped with the axis lower outer bar 9 consistent with 11 axis of adjusting set and lower interior bar 10 in 1 middle and lower part of valve body,
Lower 9 upper end of outer bar forms a fixed connection with adjusting set 11, and 1 lower end of valve body is stretched out in lower 9 lower end of outer bar, and lower interior bar 10 is placed in lower outer
The inside of bar 9, lower 10 upper end of interior bar are equipped with cylinder, which stretches into adjusting set 11, and with stretch into adjusting set
Interior 16 end of drawstring connection, lower 10 lower end of interior bar stretch out lower 9 lower face of outer bar, are equipped in 10 lower end of lower interior bar and hold block.
A kind of application method of protection valve seat ball valve:
It is as follows to close a kind of application method of protection valve seat ball valve:
A. lower outer bar is rotated, drives adjusting set, telescopic rod, locating rod, compressed spring, drawstring and ball clack together along locating slot
Shape rotates,
B. when locating rod reaches straight trough position, ball clack is moved along straight trough to runner mouth under the promotion of compressed spring, finally
Ball clack
Runner mouth is rested on, ball clack outer surface forms one with outer surface of spheroid,
C. it is rotated further by upper valve rod to rotate at 90 degree, closes a kind of protection valve seat ball valve, valve is closed at this time；
During closing, sealing surface of seat is tightly attached to sphere or ball clack surface always, and the medium of the ball valve inlet side can not
Enter outlet side by sphere or ball clack surface, medium will not wash away sealing surface of seat.
It is as follows to open a kind of application method of protection valve seat ball valve:
A. rotation upper valve rod is rotated at 90 degree first, and the import that runner mouth is directed at the ball valve is made to go out,
B. lower interior bar is rotated again, and part drawstring is made to be wrapped in the surface of lower interior bar upper end cylinder, pulling of the telescopic rod in drawstring
Under,
It drives locating rod to be detached from straight trough, while ball clack being driven to be detached from runner mouth,
C. lower outer bar is rotated again, and ball clack, compressed spring, drawstring, telescopic rod, locating rod is driven to return to raw bits along locating slot
It sets, at this time valve opening.
During unlatching, sealing surface of seat is tightly attached to sphere or ball clack surface, the medium of the ball valve inlet side always
Outlet side can not be entered by sphere or ball clack surface, medium will not wash away sealing surface of seat.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of protection valve seat ball valve, including：Valve body, sphere, valve seat, filler, gland, connecting bracket and upper valve rod, in valve body
Portion upper end is equipped with connecting flange and packing groove, and filler is fixedly installed in packing groove by gland, and connecting bracket is fastened by standard
Part is mounted at the connecting flange, and upper valve rod upper end is equipped with the keyway being connect with external driver device, and upper valve rod lower end passes through and fills out
Hopper stretches into body cavity and is connect with sphere, and sphere is placed in body cavity, and outer surface of spheroid is spherical surface structure, is set in sphere
There are the runner that can be communicated with body cavity, valve seat that body cavity is made and be vertically provided at of non-metallic plastic material, valve seat is set
There are the sealing surface of seat for forming sealing with outer surface of spheroid, sphere to be driven by upper valve rod and around 90 degree of rotations of the ball valve vertical axis
Turn, to be turned on and off the ball valve, it is characterised in that：The runner bottom surface is provided with locating slot and straight trough, the locating slot with
Line is arranged at fan arcuate structure, straight trough in the underface of the ball valve horizontal axis centered on the ball valve vertical axis, the straight trough one
End is communicated with one end of locating slot, which stretches to runner mouth nearby；Regulating device, the tune are equipped in the runner
Regulating device includes ball clack, compressed spring, telescopic rod, locating rod, drawstring and adjusting set, and adjusting set is at inverted bucket shape structure, and with this
Line is vertically provided in runner centered on the vertical axis of ball valve, and ball clack one end is equipped with the ball consistent with outer surface of spheroid radius
Shape surface, ball clack outer circle is consistent with the size of runner mouth diameter, and telescopic rod is laterally arranged, which is fixed at
Ball clack other end, the telescopic rod other end are fixedly connected with one end of drawstring, and the other end of drawstring stretches into adjusting set, positioning
Bar is vertically arranged, which is fixed on telescopic rod, and locating rod lower end is stretched into locating slot, and compressed spring is laterally arranged
Between ball clack and adjusting set；It is equipped with the axis lower outer bar consistent with adjusting set axis and lower interior bar in valve body middle and lower part, under
Outer bar upper end forms a fixed connection with adjusting set, and valve body lower end portion is stretched out in lower outer bar lower end, and lower interior bar is placed in the inside of lower outer bar,
Lower interior bar upper end is equipped with cylinder, which stretches into adjusting set, and connect with the drawstring end in adjusting set is stretched into,
Lower outer bar lower face is stretched out in lower interior bar lower end, is equipped in the lower interior bar lower end and holds block.
2. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：The lower outer bar is mounted on by briquetting
Valve body middle and lower part, briquetting are threadedly attached in valve body lower end, and the lower end of lower outer bar is equipped with adjusting block.
3. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：Resistance shelves are installed at the packing groove
Block, the retaining block are fixed by standard fasteners between filler and filler groove bottom.
4. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：Between the lower outer bar and valve body lower portion
Equipped with O-ring seal, O-ring seal is equipped between the lower outer bar and lower interior bar.
5. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：The seat material is polytetrafluoroethyl-ne
Alkene.
6. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：The valve body is made of left and right valve body,
Left and right valve body is fixedly installed togather by standard fasteners.
7. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：The drawstring material is fibrous material.
8. a kind of protection valve seat ball valve according to claim 1, it is characterised in that：The drawstring material is nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508619.1A CN108591514A (en) | 2018-05-24 | 2018-05-24 | A kind of protection valve seat ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508619.1A CN108591514A (en) | 2018-05-24 | 2018-05-24 | A kind of protection valve seat ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591514A true CN108591514A (en) | 2018-09-28 |
Family
ID=63629020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810508619.1A Withdrawn CN108591514A (en) | 2018-05-24 | 2018-05-24 | A kind of protection valve seat ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114642945A (en) * | 2022-03-24 | 2022-06-21 | 深圳市英美迪克医疗科技有限公司 | Medical oxygen generator based on valve design is flowed subassembly slowly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440969A (en) * | 1994-03-09 | 1995-08-15 | Shin; Wan-Sheng | Cylinder-operated and spring-loaded driving mechanism for a ball valve |
| KR20030086952A (en) * | 2003-09-29 | 2003-11-12 | 신관철 | Ball valve |
| CN1298067C (en) * | 2001-11-06 | 2007-01-31 | 株式会社杰士汤浅 | Lead-acid battery |
| CN104913080A (en) * | 2015-04-20 | 2015-09-16 | 广州市昊封流体工程技术有限公司 | Non-wear boosting ball valve |
| CN206092998U (en) * | 2016-05-25 | 2017-04-12 | 中冶南方工程技术有限公司 | Butterfly valve |
| CN106763856A (en) * | 2017-02-22 | 2017-05-31 | 李祥庆 | One kind is without abradable seal plug valve |
-
2018
- 2018-05-24 CN CN201810508619.1A patent/CN108591514A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440969A (en) * | 1994-03-09 | 1995-08-15 | Shin; Wan-Sheng | Cylinder-operated and spring-loaded driving mechanism for a ball valve |
| CN1298067C (en) * | 2001-11-06 | 2007-01-31 | 株式会社杰士汤浅 | Lead-acid battery |
| KR20030086952A (en) * | 2003-09-29 | 2003-11-12 | 신관철 | Ball valve |
| CN104913080A (en) * | 2015-04-20 | 2015-09-16 | 广州市昊封流体工程技术有限公司 | Non-wear boosting ball valve |
| CN206092998U (en) * | 2016-05-25 | 2017-04-12 | 中冶南方工程技术有限公司 | Butterfly valve |
| CN106763856A (en) * | 2017-02-22 | 2017-05-31 | 李祥庆 | One kind is without abradable seal plug valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114642945A (en) * | 2022-03-24 | 2022-06-21 | 深圳市英美迪克医疗科技有限公司 | Medical oxygen generator based on valve design is flowed subassembly slowly |
| CN114642945B (en) * | 2022-03-24 | 2023-07-14 | 株洲飞庆医疗器械有限公司 | Medical oxygen generator based on valve design slow flow assembly |
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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 |
Application publication date: 20180928 |
|
| WW01 | Invention patent application withdrawn after publication |