CN112145772A - Valve with liquid outlet facing direction capable of being adjusted randomly - Google Patents
Valve with liquid outlet facing direction capable of being adjusted randomly Download PDFInfo
- Publication number
- CN112145772A CN112145772A CN202010949354.6A CN202010949354A CN112145772A CN 112145772 A CN112145772 A CN 112145772A CN 202010949354 A CN202010949354 A CN 202010949354A CN 112145772 A CN112145772 A CN 112145772A
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- China
- Prior art keywords
- flange
- water outlet
- movable
- ring
- outlet pipe
- 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- Withdrawn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
- 239000007788 liquid Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 230000003068 static effect Effects 0.000 claims abstract description 12
- 239000007770 graphite material Substances 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F16K27/00—Construction of housing; Use of materials therefor
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints; Joints allowing movement
- F16L27/08—Adjustable joints; Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/0849—Adjustable joints; Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid being turned through an angle when passing from one joint element to another
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints; Joints allowing movement
- F16L27/08—Adjustable joints; Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/087—Joints with radial fluid passages
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Sliding Valves (AREA)
Abstract
The invention provides a valve with a liquid outlet facing randomly adjustable, which comprises a valve body; the end of intaking of valve body is equipped with the flange of intaking, and the play water end of valve body is equipped with out the water flange, and the inlet tube passes through the flange and intake flange bolted connection, the outside end of going out the water flange still is equipped with outer convex surface, movable sleeve is equipped with movable flange on the outlet pipe, through sealing washer B sealing connection between movable flange and the outlet pipe, and sealing washer B is fixed to be inlayed at movable flange's medial extremity, and the department of intaking of outlet pipe still is equipped with rotary type seal baffle, passes through bolted connection between movable flange and the play water flange, and rotary type seal baffle pastes on the outer convex surface. After the water outlet pipe is connected with the water outlet flange through the movable flange through the bolt, the rotary sealing baffle is attached to the outer convex surface of the water outlet flange under the action of the spring, the movable ring is closely attached to the static ring, the water outlet end of the valve body is connected with the water outlet pipe in a sealing mode, and when the direction of the water outlet end of the water outlet pipe needs to be changed, the water outlet pipe only needs to be rotated.
Description
Technical Field
The invention belongs to the technical field of valve adjustment, and particularly relates to a valve with a liquid outlet facing randomly adjustable.
Background
The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like.
If the application number is: in CN 201921456503.4's patent, a check valve convenient to transform regulation direction is disclosed, including the valve main part, the inside central point of valve main part puts and is provided with first extension piece, the inside both ends of valve main part all are provided with the second and extend the piece, the second extends the piece inside and is provided with the steel ball, steel ball right side end is provided with reset spring, reset spring right side end sets up on first extension piece lateral wall, valve main part top central point puts and is provided with hollow rod perpendicularly, hollow rod upper end is provided with the movable rod perpendicularly, the movable rod upper end level is provided with the operation panel, hollow rod outside central point puts and is provided with the stopper. The utility model discloses the usable operation panel that rotates of user judges the circulation direction of check valve through the instruction arrow point, guarantees that the flow direction of whole check valve is convenient for adjust, need not to dismantle and can adjust its flow direction, has improved the practicality of whole device greatly.
The liquid outlet of the existing valve is fixed in orientation, the angle of the liquid outlet of the valve is changed by welding a bent head and the like after the valve is connected, labor force can be increased and working hours can be increased in the construction process, and the valve is inconvenient to use, so that the problem of the existing valve is solved, and the orientation of the liquid outlet of the existing valve can be adjusted at will.
Disclosure of Invention
In order to solve the technical problems, the invention provides a valve with a liquid outlet facing randomly adjustable, which aims to solve the problems that the liquid outlet facing is fixed in most of the valves, a elbow and the like are required to be welded after the valves are connected to change the angle of the liquid outlet of the valve, the labor force and the working hours are increased in the construction process, and the use is inconvenient.
The purpose and the effect of the valve with the liquid outlet facing to the direction capable of being adjusted at will are achieved by the following specific technical means:
a valve with a liquid outlet facing randomly adjustable comprises a valve body and a water outlet pipe; the end of intaking of valve body is equipped with the flange of intaking, and the play water end of valve body is equipped with the water flange, and the inlet tube passes through the flange and intake flange bolted connection, the outside end of going out the water flange still is equipped with outer convex surface, movable sleeve is equipped with movable flange on the outlet pipe, through sealing washer B sealing connection between movable flange and the outlet pipe, and sealing washer B is fixed inlays the medial extremity at movable flange, the play water end and the inlet end of outlet pipe are 90, and the inlet end department of outlet pipe still is equipped with rotary type seal baffle, passes through bolted connection between movable flange and the water flange, and on rotary type seal baffle pasted outer convex surface, movable flange's medial extremity still is equipped with interior convex surface.
Furthermore, the outer end of the water outlet flange is also connected with a secondary sealing sleeve, and the inner diameter of the secondary sealing sleeve is larger than the diameter of the outer convex surface.
Furthermore, the front end of the secondary sealing sleeve is connected with a secondary sealing baffle, and the outer diameter of the secondary sealing baffle is the same as the diameter of the inner convex surface.
Furthermore, a sealing ring A is further embedded on the outer end face of the secondary sealing baffle, the sealing ring A protrudes out of the outer end face of the secondary sealing baffle by 1cm, and when the movable flange is connected with the water outlet flange through a bolt, the sealing ring A is attached to the inner convex face.
Furthermore, a spring is sleeved on the water outlet pipe, one end of the spring is attached to the rotary sealing baffle, and the other end of the spring is attached to the inner convex surface of the movable flange.
Furthermore, the external diameter of rotary type seal baffle is the same with the diameter of evagination surface, and inlays on rotary type seal baffle's the outer terminal surface and has the rotating ring, inlays on the outer terminal surface of outer convex surface and has quiet ring.
Further, the outer end of rotating ring protrudes the outer end face 1cm of rotary sealing baffle, the outer end of static ring also protrudes the outer end face 1cm of outer convex surface, the inner diameter and outer diameter of rotating ring and static ring are the same, and the rotating ring and static ring all adopt flexible graphite material.
Furthermore, when the movable flange is connected with the water outlet flange through the bolts, the outer end face of the movable ring is just attached to the outer end face of the static ring.
The invention at least comprises the following beneficial effects:
1. according to the invention, the rotary sealing baffle is arranged at the water inlet end of the water outlet pipe, the movable ring is arranged on the rotary sealing baffle, after the water outlet pipe is connected with the water outlet flange through the movable flange by bolts, the rotary sealing baffle is attached to the outer convex surface of the water outlet flange under the action of the spring, and the movable ring is tightly attached to the stationary ring, so that the water outlet end of the valve body is connected with the water outlet pipe in a sealing manner, and when the direction of the water outlet end of the water outlet pipe needs to be changed, only the water outlet pipe needs to be rotated.
2. According to the invention, by arranging the secondary sealing sleeve, when the water outlet pipe is connected with the water outlet flange through the movable flange by bolts, the secondary sealing baffle is attached to the inner convex surface of the movable flange and is sealed by the sealing ring A, and meanwhile, the sealing ring B is used for sealing between the movable flange and the water outlet pipe, so that leakage between the valve body and the water outlet pipe is prevented after the movable ring or the static ring is damaged, and the sealing performance between the valve and the water outlet pipe is further improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of another structure of fig. 1 according to the present invention.
Fig. 3 is a structural schematic diagram of the secondary sealing sleeve in fig. 2 after being transversely cut.
Fig. 4 is a schematic view of another structure of fig. 3 according to the present invention.
Fig. 5 is an enlarged schematic view of the structure at a in fig. 4 according to the present invention.
FIG. 6 is a schematic structural view of the water outlet pipe and the water outlet flange in FIG. 1 after being disassembled.
Fig. 7 is a side view of the valve body portion of fig. 6 in accordance with the present invention.
Fig. 8 is a schematic structural view of the invention after the secondary sealing sleeve in fig. 7 is removed.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a valve body; 101. a water inlet flange; 102. a water outlet flange; 1021. an outer convex surface; 10211. a stationary ring; 103. secondary sealing the sleeve; 1031. a secondary sealing baffle plate; 10311. a sealing ring A; 2. a water inlet pipe; 3. a water outlet pipe; 301. a rotary seal baffle; 3011. a moving ring; 302. a movable flange; 3021. a seal ring B; 3022. an inner convex surface; 303. a spring.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Example (b):
as shown in figures 1 to 8:
the invention provides a valve with a liquid outlet facing randomly adjustable, which comprises a valve body 1 and a water outlet pipe 3; the water inlet end of the valve body 1 is provided with a water inlet flange 101, the water outlet end of the valve body 1 is provided with a water outlet flange 102, the water inlet pipe 2 is connected with the water inlet flange 101 through a flange bolt, the outer side end of the water outlet flange 102 is further provided with an outer convex surface 1021, the upper movable sleeve of the water outlet pipe 3 is provided with a movable flange 302, the movable flange 302 is connected with the water outlet pipe 3 through a sealing ring B3021 in a sealing manner, the sealing ring B3021 is fixedly embedded at the inner side end of the movable flange 302, the water outlet end of the water outlet pipe 3 is 90 degrees with the water inlet end, the water inlet end of the water outlet pipe 3 is further provided with a rotary type sealing baffle 301, the movable flange 302 is connected with the water outlet flange 102 through a bolt, the rotary type sealing baffle 301 is.
Wherein, the outer end of the water outlet flange 102 is further connected with a secondary sealing sleeve 103, the inner diameter of the secondary sealing sleeve 103 is larger than the diameter of the outer convex surface 1021, the front end of the secondary sealing sleeve 103 is connected with a secondary sealing baffle 1031, the outer diameter of the secondary sealing baffle 1031 is the same as the diameter of the inner convex surface 3022, the outer end surface of the secondary sealing baffle 1031 is further inlaid with a sealing ring A10311, the sealing ring A10311 protrudes 1cm out of the outer end surface of the secondary sealing baffle 1031, when the movable flange 302 is in bolted connection with the water outlet flange 102, the sealing ring A10311 is attached to the inner convex surface 3022 of the movable flange 302, after the water outlet pipe 3 is in bolted connection with the water outlet flange 102 through the movable flange 302, the secondary sealing baffle 1031 is attached to the inner convex surface 3022 of the movable flange 302 and is sealed through the sealing ring A10311, meanwhile, the sealing ring B3021 is used for sealing between the movable flange 302 and the water outlet pipe 3, and leakage between the valve body 1 and, further improving the sealing performance between the valve 1 and the water outlet pipe 3.
Wherein, the outlet pipe 3 is further sleeved with a spring 303, one end of the spring 303 is attached to the rotary type sealing baffle 301, the other end is attached to the inner convex surface 3022 of the movable flange 302, after the outlet pipe 3 is bolted with the outlet flange 102 through the movable flange 302, the rotary type sealing baffle 301 can be attached to the outer convex surface 1021 of the outlet flange 102 under the action of the spring 303, and the movable ring 3011 is tightly attached to the stationary ring 10211.
Wherein, the outer diameter of the rotary sealing baffle 301 is the same as the diameter of the outer convex surface 1021, a movable ring 3011 is embedded on the outer end surface of the rotary sealing baffle 301, a stationary ring 10211 is embedded on the outer end surface of the outer convex surface 1021, the outer end of the movable ring 3011 protrudes 1cm out of the outer end surface of the rotary sealing baffle 301, the outer end of the stationary ring 10211 also protrudes 1cm out of the outer end surface of the outer convex surface 1021, the inner diameter and the outer diameter of the movable ring 3011 and the stationary ring 10211 are the same, and the movable ring 3011 and the stationary ring 10211 are made of flexible graphite material, when the movable flange 302 is connected to the water outlet flange 102 by bolts, the outer end face of the movable ring 3011 is just attached to the outer end face of the stationary ring 10211, after the water outlet pipe 3 is connected with the water outlet flange 102 through the movable flange 302 by bolts, the movable ring 3011 is tightly attached to the stationary ring 10211, the water outlet end of the valve body 1 and the water inlet end of the water outlet pipe 3 are sealed, and the sealing performance between the water outlet pipe 3 and the valve body 1 can be always kept through the attachment of the movable ring 3011 and the fixed ring 10211 when the water outlet pipe 3 is rotated.
The specific use mode and function of the embodiment are as follows:
in the invention, one end of a water inlet pipe is connected with a water inlet flange 101 through a flange, a water outlet pipe 3 is connected with a water outlet flange 102 through a movable flange 302 through a bolt, a rotary type sealing baffle plate 301 can be attached to an outer convex surface 1021 of the water outlet flange 102 under the action of a spring 303, a movable ring 3011 is tightly attached to a static ring 10211, the water outlet end of a valve body 1 is connected with the water outlet pipe 3 in a sealing way, meanwhile, a secondary sealing baffle plate 1031 is attached to an inner convex surface 3022 of the movable flange 302 and is sealed through a sealing ring A10311, and the movable flange 302 and the water outlet pipe 3 are sealed through the sealing ring B3021, so that after the movable ring 3011 or the static ring 10211 is damaged, leakage between the valve body 1 and the water outlet pipe 3 is prevented, the sealing performance between the valve body 1 and the water outlet pipe 3 is further improved, and when the direction of the water outlet end of the.
The invention is not described in detail, but is well known to those skilled in the art.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The utility model provides a valve that liquid outlet orientation can be adjusted wantonly which characterized in that: comprises a valve body (1) and a water outlet pipe (3); a water inlet flange (101) is arranged at the water inlet end of the valve body (1), a water outlet flange (102) is arranged at the water outlet end of the valve body (1), the water inlet pipe (2) is connected with the water inlet flange (101) through a flange by bolts, the outer side end of the water outlet flange (102) is also provided with an outer convex surface (1021), a movable flange (302) is movably sleeved on the water outlet pipe (3), the movable flange (302) is hermetically connected with the water outlet pipe (3) through a sealing ring B (3021), and the sealing ring B (3021) is fixedly embedded at the inner side end of the movable flange (302), the water outlet end and the water inlet end of the water outlet pipe (3) are 90 degrees, the water inlet end of the water outlet pipe (3) is also provided with a rotary sealing baffle plate (301), the movable flange (302) is connected with the water outlet flange (102) through a bolt, and the rotary type sealing baffle (301) is attached to the outer convex surface (1021), and the inner convex surface (3022) is also arranged at the inner side end of the movable flange (302).
2. A selectably adjustable port orientation valve according to claim 1, wherein: the outer end of the water outlet flange (102) is also connected with a secondary sealing sleeve (103), and the inner diameter of the secondary sealing sleeve (103) is larger than the diameter of the outer convex surface (1021).
3. A selectably adjustable port orientation valve according to claim 2, wherein: the front end of the secondary sealing sleeve (103) is connected with a secondary sealing baffle (1031), and the outer diameter of the secondary sealing baffle (1031) is the same as the diameter of the inner convex surface (3022).
4. A selectably adjustable port orientation valve according to claim 3, wherein: and a sealing ring A (10311) is further embedded in the outer end face of the secondary sealing baffle (1031), the sealing ring A (10311) protrudes out of the outer end face of the secondary sealing baffle (1031) by 1cm, and when the movable flange (302) is connected with the water outlet flange (102) through bolts, the sealing ring A (10311) is attached to the inner convex surface (3022).
5. A selectably adjustable port orientation valve according to claim 1, wherein: the water outlet pipe (3) is further sleeved with a spring (303), one end of the spring (303) is attached to the rotary type sealing baffle (301), and the other end of the spring (303) is attached to an inner convex surface (3022) of the movable flange (302).
6. A selectably adjustable port orientation valve according to claim 1, wherein: the outer diameter of rotary type seal baffle (301) is the same with the diameter of outer convex surface (1021), and inlays on the outer terminal surface of rotary type seal baffle (301) and has rotating ring (3011), inlays on the outer terminal surface of outer convex surface (1021) and has quiet ring (10211).
7. A selectably adjustable port orientation valve according to claim 6, wherein: the outer end of the movable ring (3011) protrudes out of the outer end face of the rotary sealing baffle (301) by 1cm, the outer end of the static ring (10211) also protrudes out of the outer end face of the outer convex face (1021) by 1cm, the inner diameter and the outer diameter of the movable ring (3011) and the outer diameter of the static ring (10211) are the same, and the movable ring (3011) and the static ring (10211) are made of flexible graphite materials.
8. A selectably adjustable port orientation valve according to claim 1, wherein: when the movable flange (302) is connected with the water outlet flange (102) through bolts, the outer end face of the movable ring (3011) is just attached to the outer end face of the static ring (10211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949354.6A CN112145772A (en) | 2020-09-10 | 2020-09-10 | Valve with liquid outlet facing direction capable of being adjusted randomly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949354.6A CN112145772A (en) | 2020-09-10 | 2020-09-10 | Valve with liquid outlet facing direction capable of being adjusted randomly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112145772A true CN112145772A (en) | 2020-12-29 |
Family
ID=73889634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010949354.6A Withdrawn CN112145772A (en) | 2020-09-10 | 2020-09-10 | Valve with liquid outlet facing direction capable of being adjusted randomly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112145772A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0831265A1 (en) * | 1996-09-18 | 1998-03-25 | Interhydraulik Gesellschaft für Hydraulikkomponenten mbH | Flanged armature |
| CN201818938U (en) * | 2010-10-13 | 2011-05-04 | 磨锐泵（上海）有限公司 | Movable joint for pipeline |
| CN108167561A (en) * | 2016-12-07 | 2018-06-15 | 上海熊猫机械(集团)有限公司 | A kind of adjustable flanged bend of export direction |
| CN210978908U (en) * | 2019-10-12 | 2020-07-10 | 肇庆市高新区笙辉机械有限公司 | Water outlet structure with adjustable direction and flow |
-
2020
- 2020-09-10 CN CN202010949354.6A patent/CN112145772A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0831265A1 (en) * | 1996-09-18 | 1998-03-25 | Interhydraulik Gesellschaft für Hydraulikkomponenten mbH | Flanged armature |
| CN201818938U (en) * | 2010-10-13 | 2011-05-04 | 磨锐泵（上海）有限公司 | Movable joint for pipeline |
| CN108167561A (en) * | 2016-12-07 | 2018-06-15 | 上海熊猫机械(集团)有限公司 | A kind of adjustable flanged bend of export direction |
| CN210978908U (en) * | 2019-10-12 | 2020-07-10 | 肇庆市高新区笙辉机械有限公司 | Water outlet structure with adjustable direction and flow |
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|---|---|---|---|
| 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: 20201229 |