CN110486257A - Diaphragm pump - Google Patents
Diaphragm pump Download PDFInfo
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- CN110486257A CN110486257A CN201910830497.2A CN201910830497A CN110486257A CN 110486257 A CN110486257 A CN 110486257A CN 201910830497 A CN201910830497 A CN 201910830497A CN 110486257 A CN110486257 A CN 110486257A
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- diaphragm
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- adapter
- valve
- entrance
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Abstract
The present invention relates to diaphragm pumps, comprising: electromagnetic actuator (1)；Diaphragm adapter (2), at least running through has the first port (21) and second port (22) being separated from each other；Valve (3) at least has the primary diaphragm (34) and secondary diaphragm (35) being spaced apart by seals dam (33)；Valve seat (4) has entrance (41) and outlet (42)；Seal chamber (5) are formed between electromagnetic actuator and diaphragm adapter, first port can be opened and closed by electromagnetic actuator, to generate pressure difference with the external world, the valve is arranged between diaphragm adapter and valve seat, entrance and exit is spaced apart by seals dam, in a quiescent state, primary diaphragm closes entrance, secondary diaphragm closes second port, during electromagnetic actuator opens and closes first port, the pressure difference opens and closes the first and second diaphragms alternately, so that controlling diaphragm pump alternately sucks and be discharged fluid via entrance and exit.Diaphragm pump of the invention it is small in size, at low cost.
Description
The application be the applying date be on November 2nd, 2012, application No. is 201210433629.6, entitled " diaphragms
The divisional application of pump " patent application.
Technical field
The present invention relates to a kind of diaphragm pump, in particular to a kind of diaphragm pump with cramped construction.
Background technique
In exhaust-gas treatment (EGT) selective oxidation reduction (SCR) system of vehicle, medium is discharged using diaphragm pump.
For the market demand, whole system must be small in size and cheap.Therefore, the subassembly of the system must also reach reduction
Size and the target for reducing cost.Meanwhile after engine stop operating, it is necessary to by the urea solution (DEF) in underground
It is emptied in tank, otherwise, the normal operation of SCR system will be damaged in the ice pressure that winter generates.Based on above-mentioned target, need out
Send out the diaphragm pump with cramped construction, also referred to as cleaning pump a kind of.
Summary of the invention
It is small in size, at low cost the technical problem to be solved in the present invention is to provide a kind of diaphragm pump with cramped construction
And it is able to achieve the function of emptying medium.
According to the present invention, a kind of diaphragm pump is provided comprising: electromagnetic actuator；Diaphragm adapter, at least running through has
The first port and second port being separated from each other；Valve at least has the primary diaphragm and the second film being spaced apart by seals dam
Piece；Valve seat has the entrance and exit that can be connected to external fluid；Wherein, the electromagnetic actuator and diaphragm adapter
Between form the seal chamber of diaphragm pump, the first port of diaphragm adapter can open and close by electromagnetic actuator, to change
The volume of seal chamber is to generate pressure difference with the external world, and wherein, the valve is arranged in the diaphragm adapter and the valve seat
Between, the entrance and the outlet are spaced apart by the seals dam, in the case where electromagnetic actuator is in off position, the valve
Primary diaphragm close entrance, and the secondary diaphragm of the valve closes second port, opens and closes the in electromagnetic actuator
During Single port, the pressure difference generated between the seal chamber and the external world replaces primary diaphragm and secondary diaphragm
It opens and closes, so that controlling diaphragm pump alternately sucks and be discharged fluid via the entrance and exit.Diaphragm pump of the invention
It is controlled and is operated by electromagnetic actuator, therefore size is very small and greatly reduces cost.
Preferably, the electromagnetic actuator includes the bias piece of magnet and armature and setting therebetween, is executed in electromagnetism
Device is under off position, and armature described in the biasing member makes it away from magnet.
Preferably, the armature is formed as column, and one end opposite with diaphragm adapter is equipped with elastomer, the elasticity
Body seals between armature and diaphragm adapter and forms the seal chamber.
Preferably, the elastomer is overmolded into the end of the armature.
Preferably, the diaphragm adapter is formed as discoid, and the first port is located in the diaphragm adapter
The heart, the second port are located at the radial outside of the first port, and the side that the diaphragm adapter is connected with the valve is set
There is the cavity for accommodating the valve.
Preferably, the first port of diaphragm adapter is opposite with primary diaphragm and is spaced therewith, to provide primary diaphragm
Space；And the outlet of valve seat is opposite with secondary diaphragm and is spaced therewith, to provide the space of secondary diaphragm.
Preferably, diaphragm adapter is in the position opposite with primary diaphragm and valve seat in the position opposite with secondary diaphragm
Protruding portion is respectively set, to prevent the further movement of primary diaphragm and secondary diaphragm.
Preferably, it is equipped in the entrance and/or the second port for preventing primary diaphragm and/or the second film respectively
The stop part that piece is inhaled into.
Preferably, the stop part is cross bracket.
Preferably, valve is the flutter valve of substantial rectangular, and the primary diaphragm and secondary diaphragm are symmetrical relative to seals dam
Arrangement.
Preferably, the valve seat is formed as plate, installation of the setting for installation into electromagnetic actuator on the periphery of valve seat
Part.
Preferably, the magnet is electromagnetic solenoid, and the bias piece is spring.
Detailed description of the invention
Fig. 1 shows the stereogram exploded view of diaphragm pump according to the present invention；
Fig. 2 shows the perspective views after diaphragm pump according to the present invention assembling；
Fig. 3 is the bottom view of diaphragm pump in Fig. 2；
Fig. 4 (a), 4 (b) are the perspective views that direction was overlooked and looked up to the diaphragm adapter in diaphragm pump according to the present invention；
Fig. 5 is the perspective view of the flutter valve in diaphragm pump according to the present invention；
Fig. 6 is the perspective view of the valve seat in diaphragm pump according to the present invention；
Fig. 7 is the cross-sectional view after diaphragm pump assembling according to the present invention.
Specific embodiment
The preferred embodiment of the present invention is described with reference to the accompanying drawings.
Fig. 1 shows the stereogram exploded view of diaphragm pump according to the present invention.As shown in Figure 1, diaphragm pump includes that electromagnetism executes
Device 1, diaphragm adapter 2, valve 3 and valve seat 4.Electromagnetic actuator 1 includes the magnet 11, bias piece 12 and electricity that can generate magnetic force
Pivot 13.
The magnet 11 is preferably solenoid actuator, by circuit control to generate magnetic force.The magnet is generally
Cylinder, one end (i.e. lower end in Fig. 1) along its circumference set at uniform intervals there are three lug 110 be fixed to SCR
In system.The magnet 11 is additionally provided with the connector 111 for being connected with control circuit, for connecting power supply line and signal wire.
The connector 111 can be formed as the shape of plug as shown in Figure 1, but the present invention is not limited thereto, as long as 111 energy of connector
It is enough that electric signal realization control is conveyed to magnet 1.The magnet 11 also be circumferentially with the such as card convex of matching piece 114 with valve seat
4 cooperations.Upper end in the other end, that is, Fig. 1 of the magnet is equipped with matching parts for mutually assembling with other components in SCR system.This
Outside, Fig. 7 is the cross-sectional view after diaphragm pump assembling.As shown in fig. 7, inside the magnet 11 be equipped with the first accommodating chamber 112 and with
Its second accommodating chamber 113 being connected to.First accommodating chamber 112 is for accommodating bias piece 12, and the second accommodating chamber 113 is for accommodating armature
13.First accommodating chamber 112 and the second accommodating chamber 113 are preferably arranged along the center line sequence of magnet 11.
The bias piece 12 can generate biasing force, when electromagnetic actuator 1 is in off position, the bias piece 12
Armature 13 is biased away from magnet 11.And when electromagnetic actuator 1 works, the magnetic force that the magnet 11 generates can overcome bias
The biasing force that part 12 generates is to attract armature 13.The bias piece 12 is preferably spring, but may be other elastomers.
The armature 13 includes the columnar part 131 being formed from steel, and the columnar part 131 is preferably cylindrical, in the columnar part
131 one end is axially arranged with bias piece accommodating chamber 1310 along it, for accommodating bias piece 12.But the bias piece accommodating chamber
1310 are not required, and the end of bias piece 12 can act directly against on the end face of columnar part 131.The columnar part 131 is another
One end is equipped with the such as rubber bodies of elastomer 132 of the whole circumference around columnar part 131.The elastomer 132 is formed as diaphragm type
Structure can extend outward to form as rough annular from the circumferential edge of columnar part 131, also may be overmoulded into columnar part
The circle that 131 entire end is shaped generally as, certainly, the periphery of elastomer 132 can also be formed as other shapes.The elasticity
Body 132 forms the seal chamber 5 of diaphragm pump for being undertaken in diaphragm adapter 2 between diaphragm adapter 2, realizes that electromagnetism is held
Fluid Sealing between row device 1 and diaphragm adapter 2.
As shown in Fig. 4 (a), 4 (b), diaphragm adapter 2 is formed as discoid, first port 21 is equipped in its center, at this
The radial outside of first port 21 is equipped with second port 22.First port 21 and second port 22 are for realizing seal chamber 5 and outside
The fluid communication on boundary.The side that is connected with elastomer 132 of diaphragm adapter 2 forms the first cavity 23 to accommodate elastomer 132,
The shape of first cavity 23 is corresponding with the peripheral shape of elastomer 132.Diaphragm adapter 2 it is opposite with first cavity 23
Side, i.e., the side that is connected with valve 3 forms the second cavity 24, to accommodate valve 3.Second cavity 24 and first port 21 and the
Two-port netwerk 22 is connected to, the second cavity 24 and the corresponding position ratio of first port 21 position corresponding with second port 22 be recessed
It is deeper, and near first port 21 be arranged protruding portion 26, with prevent first port 21 by the primary diaphragm 34 of valve 3 (hereafter
Will be described in) stop.In addition, the secondary diaphragm 35 of valve 3 is sucked into second port 22 in order to prevent, preferably in second port 22
Interior setting secondary diaphragm stop part 25, which is preferably cross bracket, so that stress distribution is equal
It is even.
As shown in figure 5, valve 3 is, for example, flutter valve, is formed as rectangle generally, is made of elastomer, can become
Shape is mobile, plays the function of replying valve.But the shape of the valve 3 is not limited to this, as long as it can be installed to diaphragm adapter 2
The second cavity 24 in, that is, as long as the shape of valve 3 is corresponding with the shape of the second cavity 24.The valve 3 includes first
Part 31 and second part 32, are separated between first part 31 and second part 32 by seals dam 33, prevent fluid between the two
Connection.First part 31 includes the above-mentioned primary diaphragm 34 that can deform, for opening and closing valve seat 4 entrance 41 (see
It is described below).Also, in order to deform primary diaphragm 34 more easily, one is respectively formed in the two opposite sides of primary diaphragm 34
A cutout unit 36.Similar with first part 31, second part 32 includes the secondary diaphragm 35 that can be deformed, and is used to open and closes
Close the second port 22 of diaphragm adapter 2.Equally, in order to deform secondary diaphragm 35 more easily, in the phase of secondary diaphragm 35
Anti- two sides are respectively formed a cutout unit 37.The structure of the valve 3 is simple, easily fabricated.
It please refers to shown in Fig. 6, valve seat 4 is for example formed as plate comprising entrance 41 and outlet 42, entrance 41 can be by valve 3
Primary diaphragm 34 open and close.Equally, primary diaphragm 34 is sucked into entrance 41 in order to prevent, is arranged first in entrance 41
Diaphragm stop part 43.The primary diaphragm stop part 43 is preferably cross bracket, so that stress distribution is uniform.With valve 3
Protruding portion 44 is arranged from the surface indentation of valve seat 4, and exporting relative to entrance 41 in connected side, outlet 42 near 42,
To prevent outlet 42 from being stopped by the secondary diaphragm 35 of valve 3.Wherein, valve seat 4 is the pedestal for realizing diaphragm pump assembling, preferably by plastics
It is made.Valve seat 4 is connected with electromagnetic actuator 1 for convenience, several guide parts 45 are set (in figure at the periphery interval of valve seat 4
It is shown as two), and the such as fastener of installation part 46 is also set up to cooperate with the such as card convex of the matching piece 114 on magnet 11.
The state of above-mentioned all parts after assembling is described referring to Fig. 7.
As shown in fig. 7, magnet 11, bias piece 12, armature 13, diaphragm adapter 2, valve 3 and 4 sequence of valve seat are assembled in one
It rises.
For bias piece 12 between magnet 11 and armature 13, one end of bias piece 12 is located at the first accommodating chamber of magnet 11
In 112, and the other end is located in the bias piece accommodating chamber 1310 of armature 13.The second accommodating chamber of magnet 11 is arranged in armature 13
In 113.Under original state (off position), armature 13 is directed away from magnet 1 under the action of the biasing force of bias piece 12
Direction biasing, to generate clearance G between one end for being provided with bias piece 12 and magnet 11 of armature 13.In working condition
Under, with the continuous power on/off of magnet 11, armature 13 is correspondingly moved back and forth in the clearance G.Magnet 11, bias piece 12, electricity
Pivot 13 constitutes electromagnetic actuator 1, controls the fluid conveying of diaphragm pump.
The other end for being provided with elastomer 132 of armature 13 is formed as taper, is seated at the first cavity of diaphragm adapter 2
In 23, and in the initial state, which closes the first port 21 of diaphragm adapter 2 and exposes second port 22.Diaphragm
It is equipped with valve 3 in second cavity 24 of adapter 2, the seals dam 33 of valve 3 divides the second cavity 24 for two parts separated from each other,
Middle a part is connected to first port 21, and corresponding with the primary diaphragm of valve 3 34, and another part can be with second port 22
Connection, and it is corresponding with the secondary diaphragm of valve 3 35.Diaphragm adapter 2 and valve 3 are fixed to electromagnetic actuator 1 by valve seat 4.
In the initial state, since the second cavity 24 is corresponding with second port 22 with the corresponding position ratio of first port 21
Position be recessed deeper, and due to outlet 42 than entrance 41 be recessed, so as shown in fig. 7, primary diaphragm 34 and first end
Mouth 21 is spaced apart and closes the entrances 41 of valve seat 4, and secondary diaphragm 35 is spaced apart with outlet 42 and closes second port 22.
The workflow of diaphragm pump according to the present invention is described below.
In diaphragm pump operation, the driving circulation of electromagnetic actuator 1 is divided into two states:
State I:
Magnet 11 is powered by control circuit control and generates magnetic force, to attract armature 13.When the magnetic force is greater than bias piece 12
Biasing force and when other resistances such as frictional force, armature 13 moves upwards.At the same time, first port 21 is opened.Sealing
Chamber 5 leads to pressure reduction since volume becomes larger, and under the action of pressure difference, primary diaphragm 34 is moved upwards, thus the entrance of valve seat 4
41 open, and since the effect secondary diaphragm 35 of pressure difference still closes second port 22.In addition, due to the presence of protruding portion 26, the
One diaphragm can't be moved to be contacted with first port 21, therefore fluid will be out of entrance 41 suction seal chamber 5.
State I I:
Magnet 11 is powered off by control circuit control, and magnetic force is caused to fade away.It is greater than magnetic in the biasing force of bias piece 12
When power, armature 13 is moved downward, and returns to initial position until closing first port 21.At this point, since the volume of seal chamber 5 subtracts
Small, cavity pressure increases, and under the action of pressure difference, primary diaphragm 34, which moves downward, closes entrance 41, and secondary diaphragm 35 is downward
Second port 22 is opened in movement.To which the fluid in seal chamber 5 is flowed out via second port 22 from outlet 42.
Wherein, the control of the frequency of 11 power on/off of magnet and controlled duty cycle circuit, this directly results in diaphragm pump suction
And frequency and the duty ratio circulation of pressure change.It is bigger that perfect matching between frequency and duty ratio obtains diaphragm pump
Flow.
Deformation
The present invention is not limited to above-mentioned specific structures, but can produce various modifications.
For example, the quantity of 2 middle port of diaphragm adapter is not limited to two, but it is multiple to can according to need setting.Together
Sample, the quantity of diaphragm is also not necessarily limited to two in flutter valve, or multiple.And the quantity of the entrance and exit in valve seat 4
It is not limited to two, or multiple.As long as can by each ports of mobile realization of one or more diaphragms and entrance and
Circulation between outlet is alternately.
To those skilled in the art, further advantage and modification are obvious.Also, each portion of the invention
It can in any combination, unless this combination will violate the purpose of the present invention or cannot achieve between part.Therefore the present invention is with regard to it
Shown and described detail, representative configurations and illustrative examples are not limited to for wider range of meaning.
Claims (10)
1. a kind of diaphragm pump comprising:
Electromagnetic actuator (1)；
Diaphragm adapter (2), at least running through has the first port (21) and second port (22) being separated from each other, and described first
Port (21) is located at the center of the diaphragm adapter (2), and the second port (22) is located at the diameter of the first port (21)
Outward；
Valve (3) at least has the primary diaphragm (34) and secondary diaphragm (35) being spaced apart by seals dam (33)；
Valve seat (4) has the entrance (41) that can be connected to external fluid and outlet (42)；
Wherein, the seal chamber (5) of diaphragm pump, diaphragm adapter are formed between the electromagnetic actuator (1) and diaphragm adapter (2)
(2) first port (21) can be opened and closed by electromagnetic actuator (1), to change the volume of seal chamber (5) thus with outer
Boundary generates pressure difference, and
Wherein, the valve (3) is arranged between the diaphragm adapter (2) and the valve seat (4), the entrance (41) and described
(42) are exported to be spaced apart by the seals dam (33), in the case where electromagnetic actuator (1) is in off position, the of the valve (3)
One diaphragm (34) closes entrance (41), and the secondary diaphragm (35) of the valve (3) closes second port (22), executes in electromagnetism
During device (1) opens and closes first port (21), the pressure difference generated between the seal chamber (5) and the external world makes
It obtains primary diaphragm (34) and secondary diaphragm (35) alternately opens and closes, to control diaphragm pump via the entrance (41) and go out
Mouth (42) alternately sucks and discharge fluid.
2. diaphragm pump according to claim 1, wherein the electromagnetic actuator (1) includes magnet (11) and armature (13)
And the bias piece (12) of setting therebetween, in the case where electromagnetic actuator (1) is in off position, bias piece (12) bias
The armature (13) makes it away from magnet (11).
3. diaphragm pump according to claim 2, wherein the armature (13) is formed as column, with diaphragm adapter (2)
Opposite one end is equipped with elastomer (132), and the elastomer (132) seals shape between armature (13) and diaphragm adapter (2)
At the seal chamber (5).
4. diaphragm pump according to claim 3, wherein the elastomer (132) is overmolded into the armature (13)
End.
5. diaphragm pump according to claim 1-4, wherein the diaphragm adapter (2) is formed as discoid, institute
It states side that diaphragm adapter (2) is connected with the valve (3) and is equipped with cavity (24) for accommodating the valve (3).
6. diaphragm pump according to claim 1-5, wherein the first port (21) of diaphragm adapter (2) and the
One diaphragm (34) is opposite and is spaced therewith, to provide the space of primary diaphragm (34)；And the outlet (42) of valve seat (4) with
Secondary diaphragm (35) is opposite and is spaced therewith, to provide the space of secondary diaphragm (35).
7. diaphragm pump according to claim 6, wherein diaphragm adapter (2) is in the position opposite with primary diaphragm (34)
And protruding portion (26,44) are respectively set in the position opposite with secondary diaphragm (35) in valve seat (4), to prevent primary diaphragm (34)
With the further movement of secondary diaphragm (35).
8. diaphragm pump according to claim 1-4, wherein the entrance (41) and/or the second port
(22) stop part (43,25) for preventing primary diaphragm (34) and/or secondary diaphragm (35) to be inhaled into respectively is equipped in.
9. diaphragm pump according to claim 1-4, wherein valve (3) is the flutter valve of substantial rectangular, described the
One diaphragm (34) and secondary diaphragm (35) are arranged symmetrically relative to seals dam (3).
10. diaphragm pump according to claim 1-4, wherein the magnet (11) is electromagnetic solenoid, described inclined
Casting die (12) is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910830497.2A CN110486257A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210433629.6A CN103821702A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
| CN201910830497.2A CN110486257A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210433629.6A Division CN103821702A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110486257A true CN110486257A (en) | 2019-11-22 |
Family
ID=50756940
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210433629.6A Pending CN103821702A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
| CN201910830497.2A Pending CN110486257A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210433629.6A Pending CN103821702A (en) | 2012-11-02 | 2012-11-02 | Diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN103821702A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104957079A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Infinitely variable speed oxygen charging device |
| CN107917071A (en) * | 2017-12-25 | 2018-04-17 | 无锡市创恒机械有限公司 | Back suction pumping diaphragm |
| CN111255672A (en) * | 2020-03-27 | 2020-06-09 | 湖南腾智机电有限责任公司 | Electromagnetic type miniature variable diaphragm vacuum pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005325780A (en) * | 2004-05-14 | 2005-11-24 | Alps Electric Co Ltd | Reciprocating pump |
| JP2007120496A (en) * | 2005-09-27 | 2007-05-17 | Okayama Univ | Pump |
| CN101356371A (en) * | 2005-11-14 | 2009-01-28 | 约翰·斯坦伯格 | Diaphragm pump |
| CN101666308A (en) * | 2009-09-07 | 2010-03-10 | 无锡威孚力达催化净化器有限责任公司 | Reciprocating rubber diaphragm hydraulic pump |
| CN102016315A (en) * | 2008-05-02 | 2011-04-13 | 泽维技术公司 | A pumping system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100533799B1 (en) * | 2002-12-19 | 2005-12-06 | 알프스 덴키 가부시키가이샤 | Pump |
| JP4188207B2 (en) * | 2003-11-05 | 2008-11-26 | アルプス電気株式会社 | pump |
| JP2007278171A (en) * | 2006-04-06 | 2007-10-25 | Shinano Kenshi Co Ltd | Solenoid and electromagnetic pump |
| JP5513066B2 (en) * | 2009-10-16 | 2014-06-04 | 株式会社イワキ | Reciprocating pump and check valve |
-
2012
- 2012-11-02 CN CN201210433629.6A patent/CN103821702A/en active Pending
- 2012-11-02 CN CN201910830497.2A patent/CN110486257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005325780A (en) * | 2004-05-14 | 2005-11-24 | Alps Electric Co Ltd | Reciprocating pump |
| JP2007120496A (en) * | 2005-09-27 | 2007-05-17 | Okayama Univ | Pump |
| CN101356371A (en) * | 2005-11-14 | 2009-01-28 | 约翰·斯坦伯格 | Diaphragm pump |
| CN102016315A (en) * | 2008-05-02 | 2011-04-13 | 泽维技术公司 | A pumping system |
| CN101666308A (en) * | 2009-09-07 | 2010-03-10 | 无锡威孚力达催化净化器有限责任公司 | Reciprocating rubber diaphragm hydraulic pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103821702A (en) | 2014-05-28 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191122 |