CN108678376A - A kind of concrete casting device - Google Patents
A kind of concrete casting device Download PDFInfo
- Publication number
- CN108678376A CN108678376A CN201810532464.5A CN201810532464A CN108678376A CN 108678376 A CN108678376 A CN 108678376A CN 201810532464 A CN201810532464 A CN 201810532464A CN 108678376 A CN108678376 A CN 108678376A
- Authority
- CN
- China
- Prior art keywords
- pipe
- cylinder
- concrete
- plate
- pour
- 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- Withdrawn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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/025—Buckets specially adapted for use with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to the technical fields of concreting auxiliary equipment, more particularly to a kind of concrete casting device, the situation that pours of tubing string inner concrete can be detected, avoid concrete spill-over waste or concrete from injecting very few and pouring quality situation should be influenced, improve practicability；And time course can be retained in cylinder the case where harden and chromatograph pouring to avoid concrete, ensure the quality of concrete, improve use reliability；Including pouring cylinder, pour cylinder is internally provided with placed cavity, and the top for pouring cylinder is provided with hanging ring and feed pipe, and the bottom end for pouring cylinder is provided with and pours pipe, and the exterior bottom for pouring cylinder is provided with multigroup support ear；Further include floating ball, casing, inner tube, baffle, plate, threaded rod, screwed pipe, stepper motor, push plate, spring, control switch, mounting plate, stirring motor, shaft and paddle, it is rectangular tube to pour pipe, and is respectively arranged with preceding sliding slot and rear sliding slot on the front side wall and rear wall poured in pipe.
Description
Technical field
The present invention relates to the technical fields of concreting auxiliary equipment, more particularly to a kind of concrete casting device.
Background technology
It is well known that concreting refers to concreting entering mould the process until plasticizing, in civil construction work
Being made predetermined body in the materials to mould such as concrete in journey, when concreting, the free height of concrete no more than
2m, it is a kind of in building construction process, concrete to be poured that corresponding measure, concrete casting device should be taken when more than 3m
The auxiliary device into mould is built, is widely used in a variety of applications in the realm of building construction；Existing concrete casting device includes
Pour cylinder, pour cylinder be internally provided with placed cavity, pour the feed pipe that the top of cylinder is provided with hanging ring and is communicated with placed cavity,
The bottom end for pouring cylinder is provided with and pours pipe, and blow-off valve is provided at pipe pouring, pour cylinder exterior bottom be provided with it is multigroup
Support ear；Existing concrete casting device in use, lift the tubing string top poured to band by cylinder is poured by hanging device,
And be supported by multigroup support ear to pouring cylinder, open blow-off valve, pour concrete in cylinder under gravity from
Drainage conduit is exported to completing concreting in tubing string；It is found in existing concrete casting device use, can not learn pipe
The case where pouring situation inside column, spill-over can be caused if concrete injection is excessive, coagulation carry injection it is very few if again can shadow
The pouring quality for ringing concrete, causes practicability relatively low；And it is frequently present of a tubing string to have poured, and pours in cylinder and still have
The case where part concrete, can harden and chromatograph if pouring the overlong time that the concrete in cylinder retains, influence coagulation
The quality of soil, causes use reliability relatively low.
Invention content
In order to solve the above technical problems, the present invention is provided and a kind of can be examined to the situation that pours of tubing string inner concrete
It surveys, avoids concrete spill-over waste or concrete from injecting very few and pouring quality situation should be influenced, improve practicability；And it can
Time course is retained in cylinder the case where harden and chromatograph pouring to avoid concrete, is ensured the quality of concrete, is carried
The concrete casting device of high use reliability.
A kind of concrete casting device of the present invention, including cylinder is poured, pour cylinder is internally provided with placed cavity, pours cylinder
The top feed pipe that is provided with hanging ring and is communicated with placed cavity, the bottom end for pouring cylinder is provided with and pours pipe, pours the outside of cylinder
Bottom is provided with multigroup support ear；Further include floating ball, casing, inner tube, baffle, plate, threaded rod, screwed pipe and stepper motor,
The top of described sleeve pipe is connect with the left side for pouring a bottom end respectively, and inside pipe casing is provided with push plate and spring, the gear
Plate is mounted on the bottom end of casing, and perforation up and down is provided in the middle part of baffle, the top and bottom end point of the spring
It is not connect with the top of the bottom end of push plate and baffle, the top of said inner tube passes through perforation to stretch in casing from the bottom end of baffle
And connected across spring and the center bottom of push plate, the bottom end for pouring cylinder is provided with control switch, and the control switch is located at set
Top in pipe and positioned at push plate, the pipe that pours is rectangular tube, pours and is respectively arranged on front side wall and rear wall in pipe
Preceding sliding slot and rear sliding slot, the right end for pouring pipe are provided with socket, and the right end of the preceding sliding slot and rear sliding slot is communicated with socket, institute
It states the left end of plate and is stretched to from the right end for pouring pipe across socket and poured in pipe, and the front-end and back-end of plate are located at
In preceding sliding slot and rear sliding slot, the right end for pouring pipe is provided with mounting plate, and the stepper motor is fixedly mounted on mounting plate top, institute
The left side output end of the right end and stepper motor of stating screwed pipe is sequentially connected, in the middle part of the left end of the threaded rod and the right end of plate
The right end of connection, threaded rod is inserted into and spiral shell is filled to inside the left end of screwed pipe, and the control switch is electrically connected with stepper motor；Also
Including stirring motor, the stirring motor is mounted on the top for pouring cylinder, and is provided with and turns in the bottom output end of stirring motor
The bottom end of axis, the shaft is stretched to from the top of agitator in working chamber, and the bottom end of shaft is provided with paddle, described
Paddle is located at the bottom of working chamber.
A kind of concrete casting device of the present invention, further includes multigroup hydraulic cylinder and multigroup support plate, multigroup hydraulic pressure
Cylinder is separately mounted to the top of multigroup support ear, and is both provided with hydraulic stem in the bottom output end of multigroup hydraulic cylinder, described more
The top of the bottom end self-supporting ear of group hydraulic stem passes through support ear and is connect respectively with the top of multigroup support plate.
A kind of concrete casting device of the present invention, further includes ring support, the outer middle side part for pouring cylinder is provided with
One circle support ring, the bottom end of the support ring and the tip contact of ring support.
A kind of concrete casting device of the present invention, the top left hand of the plate and right side are both provided with limited block, institute
It states two groups of limited blocks and is respectively positioned on and pour in pipe.
A kind of concrete casting device of the present invention, the bottom end of the top of the push plate and control switch there are safety away from
From.
Beneficial effects of the present invention are compared with prior art：When the concrete in tubing string, which rises to, to be contacted with floating ball,
Concrete drives floating ball to rise together, and floating ball drives inner tube rising and push plate to rise, when the top of push plate triggering control switch
When, start stepper motor, stepper motor drives screwed pipe to rotate certain number of turns, by the cooperation of screwed pipe and threaded rod, makes
Plate is moved to the left, until the left end of plate is contacted with the inner left wall for pouring pipe, is sealed to pour pipe, can be to tubing string
The situation that pours of inner concrete is detected, and concrete spill-over waste or concrete is avoided to inject very few and should influence to pour matter
Situation is measured, practicability is improved, certain supporting role can not only be played before concrete is contacted with floating ball by spring, but also can
With when push plate rises, spring plays certain position-limiting action from compressing to become stretching, avoid that switch crushing will be controlled；When one
When tubing string pours completion, or when the new concrete of addition, paddle rotation is driven by stirring motor, to mixed in placed cavity
Solidifying soil is stirred, and can be retained time course in cylinder the case where harden and chromatograph pouring to avoid concrete, be ensured
The quality of concrete improves use reliability.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the partial enlargement structural representation at A of the present invention；
Fig. 3 is that the present invention pours the overlooking structure diagram that pipe is connected with plate；
It is marked in attached drawing：1, cylinder is poured；2, hanging ring；3, feed pipe；4, it pours；5, support ear；6, floating ball；7, casing；8, inner tube；
9, baffle；10, plate；11, threaded rod；12, screwed pipe；13, stepper motor；14, push plate；15, spring；16, control switch；
17, preceding sliding slot；18, rear sliding slot；19, mounting plate；20, stirring motor；21, shaft；22, paddle；23, hydraulic cylinder；24, it supports
Plate；25, hydraulic stem；26, ring support；27, support ring；28, limited block.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
As shown in Figure 1 to Figure 3, a kind of concrete casting device of the invention, including cylinder 1 is poured, the inside for pouring cylinder is set
It is equipped with placed cavity, the top for pouring cylinder is provided with hanging ring 2 and the feed pipe communicated with placed cavity 3, and the bottom end for pouring cylinder is provided with
Pipe 4 is poured, the exterior bottom for pouring cylinder is provided with multigroup support ear 5；Further include floating ball 6, casing 7, inner tube 8, baffle 9, plate
10, the top of threaded rod 11, screwed pipe 12 and stepper motor 13, casing is connect with the left side for pouring a bottom end respectively, and is being covered
Pipe is internally provided with push plate 14 and spring 15, and baffle is mounted on the bottom end of casing, and is provided with up and down in the middle part of baffle
Perforation, the top and bottom end of spring connect with the top of the bottom end of push plate and baffle respectively, and the top of inner tube is from the bottom of baffle
It holds and stretches in casing across perforation and connected across spring and the center bottom of push plate, the bottom end for pouring cylinder is provided with control and opens
16 are closed, control switch is located at the top in casing and positioned at push plate, and it is rectangular tube to pour pipe, pours the front side wall and rear side in pipe
Preceding sliding slot 17 and rear sliding slot 18 are respectively arranged on wall, the right end for pouring pipe is provided with socket, the right end of preceding sliding slot and rear sliding slot
Communicated with socket, the left end of plate is stretched to across socket from the right end for pouring pipe and is poured in pipe, and the front end of plate with
Rear end is located in preceding sliding slot and rear sliding slot, and the right end for pouring pipe is provided with mounting plate 19, and stepper motor is fixedly mounted on peace
Loading board top, the right end of screwed pipe and the left side output end of stepper motor are sequentially connected, the left end of threaded rod and the right end of plate
Middle part connects, and the right end of threaded rod is inserted into and spiral shell is filled to inside the left end of screwed pipe, and control switch is electrically connected with stepper motor；Also
Including stirring motor 20, stirring motor is mounted on the top for pouring cylinder, and the bottom output end of stirring motor is provided with shaft
21, the bottom end of shaft is stretched to from the top of agitator in working chamber, and the bottom end of shaft is provided with paddle 22, paddle
Positioned at the bottom of working chamber；When the concrete in tubing string, which rises to, to be contacted with floating ball, concrete drives floating ball to rise together, floats
Spherical zone moves inner tube rising and push plate rises, when the top of push plate triggering control switch, startup stepper motor, and stepper motor band
Dynamic screwed pipe rotates certain number of turns, by the cooperation of screwed pipe and threaded rod, plate is made to be moved to the left, until the left end of plate
It is contacted with the inner left wall for pouring pipe, seals, the situation that pours of tubing string inner concrete can be detected to which pipe will be poured,
It avoids concrete spill-over waste or concrete from injecting very few and pouring quality situation should be influenced, improves practicability, pass through spring
Not only certain supporting role can be played before concrete is contacted with floating ball, but also can be when push plate rises, spring is by compressing
Become stretching and play certain position-limiting action, avoids that switch crushing will be controlled；When a tubing string pours completion, or addition is new
Concrete when, by stirring motor drive paddle rotation, the concrete in placed cavity is stirred, can be to avoid coagulation
Soil retains time course the case where harden and chromatograph pouring in cylinder, ensures the quality of concrete, improves using reliable
Property.
A kind of concrete casting device of the present invention, further includes multigroup hydraulic cylinder 23 and multigroup support plate 24, multigroup hydraulic pressure
Cylinder is separately mounted to the top of multigroup support ear, and is both provided with hydraulic stem 25 in the bottom output end of multigroup hydraulic cylinder, multigroup
The top of the bottom end self-supporting ear of hydraulic stem passes through support ear and is connect respectively with the top of multigroup support plate；Pass through multigroup hydraulic pressure
Cylinder is synchronous respectively to drive multigroup hydraulic stem to move up and down, and multigroup hydraulic stem drives multigroup support plate to move up and down respectively, passes through branch
The bottom end of fagging and the tip contact of tubing string play support effect, the bottom end for pouring pipe can be located at the height inside tubing string into
Row is adjusted, and cooperation floating ball measures the height of tubing string inner concrete, further increases the quality of concreting.
A kind of concrete casting device of the present invention, further includes ring support 26, the outer middle side part for pouring cylinder is provided with one
Enclose support ring 27, the bottom end of support ring and the tip contact of ring support；It is convenient on the ground by support ring and ring support
It is supported to pouring cylinder.
A kind of concrete casting device of the present invention, the top left hand of plate and right side are both provided with limited block 28, two groups
Limited block, which is respectively positioned on, to be poured in pipe；It prevents from plate from pouring in pipe certainly by limited block to extract out, improve practicability.
A kind of concrete casting device of the present invention, there are safe distances with the bottom end of control switch on the top of push plate；It carries
High security, carry one for spring becomes the space stretched from compression.
A kind of concrete casting device of the present invention before completing above-mentioned action, passes through ring support at work
It is supported with support ring to pouring cylinder, the concrete being stirred is directed into from feed pipe in placed cavity, then pass through lifting
Equipment hangs the top for pouring the hanging ring on top by pouring cylinder and being hoisted to tubing string, passes through the bottom end of multigroup support plate and tubing string
Tip contact will pour cylinder and be stabilized in the top of tubing string, drives screwed pipe rotation by stepper motor, passes through screwed pipe and screw thread
The right end of plate is drawn out to by the cooperation of bar to be poured on the right side of pipe, is poured the concrete in cylinder and is poured certainly under the effect of gravity
Pipe exports, and realizes concreting, and when the concrete in tubing string, which rises to, to be contacted with floating ball, concrete drives floating ball one to be same as above
It rising, floating ball drives inner tube rising and push plate to rise, when the top of push plate triggering control switch, startup stepper motor, stepping
Motor drives screwed pipe to rotate certain number of turns, by the cooperation of screwed pipe and threaded rod, plate is made to be moved to the left, until plate
Left end contacted with the inner left wall for pouring pipe, seal so that pipe will be poured, can to tubing string inner concrete pour situation into
Row detection avoids concrete spill-over waste or concrete from injecting very few and should influence pouring quality situation, improves practicability, lead to
Certain supporting role can not only be played before concrete is contacted with floating ball by crossing spring, but also can be when push plate rises, spring
Become stretching from compression and play certain position-limiting action, avoids that switch crushing will be controlled, when a tubing string pours completion, or
When adding new concrete, paddle rotation is driven by stirring motor, the concrete in placed cavity is stirred, can be kept away
Exempt from concrete and retain time course in cylinder the case where harden and chromatograph pouring, ensures that the quality of concrete, raising make
With reliability, multigroup hydraulic stem is driven to move up and down by the way that multigroup hydraulic cylinder is synchronous respectively, multigroup hydraulic stem drives multigroup respectively
Support plate moves up and down, and support effect is played by the bottom end of support plate and the tip contact of tubing string, can be to pouring the bottom of pipe
The height that end is located inside tubing string is adjusted, and cooperation floating ball measures the height of tubing string inner concrete, further increases
The quality of concreting prevents plate from pouring in pipe certainly and extracts out by limited block, the top on the top and control switch of push plate
There are safe spaces, and carry one for spring becomes the space stretched from compression, improves safety.
A kind of concrete casting device of the present invention, it should be noted that stepper motor, hydraulic cylinder and stirring motor pass through
Special controller is controlled, and the common sense such as well known concrete structure and characteristic do not describe excessively herein in scheme.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of concrete casting device, including pour cylinder（1）, pour cylinder（1）Be internally provided with placed cavity, pour cylinder（1）
Top be provided with hanging ring（2）With the feed pipe communicated with placed cavity（3）, pour cylinder（1）Bottom end be provided with and pour pipe（4）,
Pour cylinder（1）Exterior bottom be provided with multigroup support ear（5）；It is characterized in that, further including floating ball（6）, casing（7）, inner tube
（8）, baffle（9）, plate（10）, threaded rod（11）, screwed pipe（12）And stepper motor（13）, described sleeve pipe（7）Top point
Not with pour cylinder（1）The left side of bottom end connects, and in casing（7）It is internally provided with push plate（14）And spring（15）, the baffle
（9）Mounted on casing（7）Bottom end, and in baffle（9）Middle part be provided with perforation up and down, the spring（15）Top
End and bottom end respectively with push plate（14）Bottom end and baffle（9）Top connection, said inner tube（8）Top from baffle（9）'s
Bottom end passes through perforation to stretch to casing（7）It is interior and pass through spring（15）With push plate（14）Center bottom connection, pour cylinder（1）'s
Bottom end is provided with control switch（16）, the control switch（16）Positioned at casing（7）It is interior and be located at push plate（14）Top, it is described
Pour pipe（4）For rectangular tube, pipe is poured（4）It is respectively arranged with preceding sliding slot on interior front side wall and rear wall（17）With rear sliding slot
（18）, pour pipe（4）Right end be provided with socket, the preceding sliding slot（17）With rear sliding slot（18）Right end communicated with socket,
The plate（10）Left end from pouring pipe（4）Right end stretched to across socket and pour pipe（4）It is interior, and plate（10）Before
End and rear end are located at preceding sliding slot（17）With rear sliding slot（18）It is interior, pour pipe（4）Right end be provided with mounting plate（19）, described
Stepper motor（13）It is fixedly mounted on mounting plate（19）Top, the screwed pipe（12）Right end and stepper motor（13）Left side
Output end is sequentially connected, the threaded rod（11）Left end and plate（10）Right end in the middle part of connection, threaded rod（11）Right end
It is inserted into and spiral shell is filled to screwed pipe（12）Left end inside, control switch（16）With stepper motor（13）Electrical connection；Further include
Stirring motor（20）, the stirring motor（20）Mounted on pouring cylinder（1）Top, and in stirring motor（20）Bottom output
End is provided with shaft（21）, the shaft（21）Bottom end stretched in working chamber from the top of agitator, and in shaft（21）
Bottom end be provided with paddle（22）, the paddle（22）Positioned at the bottom of working chamber.
2. a kind of concrete casting device as described in claim 1, which is characterized in that further include multigroup hydraulic cylinder（23）With it is more
Group support plate（24）, multigroup hydraulic cylinder（23）It is separately mounted to multigroup support ear（5）Top, and in multigroup hydraulic cylinder
（23）Bottom output end be both provided with hydraulic stem（25）, multigroup hydraulic stem（25）Bottom end self-supporting ear（5）Top
Across support ear（5）And respectively with multigroup support plate（24）Top connection.
3. a kind of concrete casting device as claimed in claim 2, which is characterized in that further include ring support（26）, described
Pour cylinder（1）Outer middle side part be provided with a circle support ring（27）, the support ring（27）Bottom end and ring support（26）'s
Tip contact.
4. a kind of concrete casting device as claimed in claim 3, which is characterized in that the plate（10）Top left hand and
Right side is both provided with limited block（28）, two groups of limited blocks（28）It is respectively positioned on and pours pipe（4）It is interior.
5. a kind of concrete casting device as claimed in claim 4, which is characterized in that the push plate（14）Top and control
Switch（16）There are safe distances for bottom end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810532464.5A CN108678376A (en) | 2018-05-29 | 2018-05-29 | A kind of concrete casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810532464.5A CN108678376A (en) | 2018-05-29 | 2018-05-29 | A kind of concrete casting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108678376A true CN108678376A (en) | 2018-10-19 |
Family
ID=63807205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810532464.5A Withdrawn CN108678376A (en) | 2018-05-29 | 2018-05-29 | A kind of concrete casting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108678376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528885A (en) * | 2019-09-10 | 2019-12-03 | 国网山东省电力公司东营供电公司 | A kind of civil construction irrigation device |
-
2018
- 2018-05-29 CN CN201810532464.5A patent/CN108678376A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528885A (en) * | 2019-09-10 | 2019-12-03 | 国网山东省电力公司东营供电公司 | A kind of civil construction irrigation device |
| CN110528885B (en) * | 2019-09-10 | 2021-08-10 | 国网山东省电力公司东营供电公司 | Civil engineering watering device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209040194U (en) | A kind of Accrete clearing device for hydraulic engineering | |
| CN108316319B (en) | Traffic Engineering Construction slope protection device | |
| CN211537396U (en) | Sampling test pharmacy device | |
| CN108678376A (en) | A kind of concrete casting device | |
| CN109916669A (en) | A kind of underwater sample collecting device and its method of sampling | |
| CN105804403A (en) | Rolling ball type concrete pouring structure and method for overground large special-shaped stiff column | |
| CN101545259B (en) | Device and method for non-underwater concreting by using drilled pile | |
| CN207072022U (en) | Cement mortar agitator tank with feeding device | |
| CN206426273U (en) | A kind of civil construction agitator | |
| CN209406148U (en) | It is a kind of for producing the device of insulating materials | |
| CN208098832U (en) | Slurry tank automatic flushing device | |
| CN207348066U (en) | A kind of hole pile concreting equipment | |
| CN208984165U (en) | A kind of underground water fixed level observation system | |
| CN203360921U (en) | Improved fiber fluffer | |
| CN209636087U (en) | A kind of sludge treatment device | |
| CN207439774U (en) | A kind of control reinforcement depth preparation of soil sample device | |
| CN207122443U (en) | A kind of tubular through flow pump easily repaired | |
| CN209665773U (en) | A kind of framed casting device with acceleration cement solidification function | |
| CN220513464U (en) | Solid-liquid separation device for extracting tremella polysaccharide | |
| CN217877922U (en) | Anti-collision magnetic turning plate liquid level meter | |
| US2089142A (en) | Boat elevator and fish ladder | |
| CN211887180U (en) | Ball mill is used in preparation of correction tape coating | |
| CN221078622U (en) | Medicine dissolving-out instrument | |
| CN214502623U (en) | Flow calibration system for hydraulic mechanical test bed | |
| CN217710641U (en) | Hydraulic and hydroelectric engineering ground rock test detects device of fetching earth |
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: 20181019 |
|
| WW01 | Invention patent application withdrawn after publication |