CN111364337A - Bituminous paving hole groove cleaning device - Google Patents

Bituminous paving hole groove cleaning device Download PDF

Info

Publication number
CN111364337A
CN111364337A CN202010205892.4A CN202010205892A CN111364337A CN 111364337 A CN111364337 A CN 111364337A CN 202010205892 A CN202010205892 A CN 202010205892A CN 111364337 A CN111364337 A CN 111364337A
Authority
CN
China
Prior art keywords
air duct
handle
cleaning device
side wall
rotating shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010205892.4A
Other languages
Chinese (zh)
Inventor
李天云
其他发明人请求不公开姓名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Normal University
Original Assignee
Jiangsu Normal University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Normal University filed Critical Jiangsu Normal University
Priority to CN202010205892.4A priority Critical patent/CN111364337A/en
Publication of CN111364337A publication Critical patent/CN111364337A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0926Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters

Abstract

A cleaning device for pits in asphalt pavements comprises a cart, wherein a dust storage barrel is fixedly arranged at the top of the cart, an induced draft fan is fixedly connected to the top of the dust storage barrel, a handle air duct is connected to the input end of the induced draft fan, a flexible hose is arranged between the handle air duct and the induced draft fan, two ends of the flexible hose are respectively in sealing connection with the induced draft fan and the handle air duct, and a cleaning mechanism is arranged at the end part of the handle air duct; the cleaning brush of usable rotation work cleans in the hole groove, the raise dust that the cleaning process produced inhales the dust storage barrel in, still can utilize wire rope rotation to drive the steel ball of tip portion to hit not hard up pitch or stone granule on the hole inslot wall, hit not hard up material and hit down, accomplish the cleaning work to the hole groove, for the mode of artifical clearance, it is higher to clean efficiency, and can absorb the raise dust that produces in the course of the work, keep operational environment's clean and tidy.

Description

Bituminous paving hole groove cleaning device
Technical Field
The invention relates to the field of road maintenance equipment, in particular to a cleaning device for pits of an asphalt pavement.
Background
Whether it is a cement or asphalt pavement, after a period of traffic use, various damages, deformations and other defects, which we collectively refer to as pavement defects, may develop in succession. The early common diseases comprise cracks, pits, ruts, looseness, subsidence, vehicle jumping at the top of a bridge head or a culvert, surface damage and the like.
At present to the processing of road surface hole groove be usually that the staff cleans totally with dust and stone in the hole groove by hand, then pour the mixture of pitch and stone to the hole inslot, then the compaction, because the stone pitch of hole inslot wall all has the not hard up risk that drops, if do not handle just pour new pitch again, then drop easily, consequently also with the not hard up material clean up of hole inslot wall, lead to the mode efficiency of artifical cleaning lower, and the job site can produce more raise dust.
Disclosure of Invention
In order to overcome the problems brought forward by the technical background, the invention provides a cleaning device for a pit of an asphalt pavement.
The technical scheme of the invention is as follows: a cleaning device for pits in asphalt pavements comprises a cart, wherein a dust storage barrel is fixedly arranged at the top of the cart, a draught fan is fixedly connected to the top of the dust storage barrel, the input end of the draught fan is connected with a handle air duct, a flexible hose is arranged between the handle air duct and the draught fan, two ends of the flexible hose are respectively in sealing connection with the draught fan and the handle air duct, a cleaning mechanism is arranged at the end part of the handle air duct, a mounting frame is fixedly arranged on the inner side wall at the port part of the handle air duct, the cleaning mechanism comprises a driving motor, a rotating shaft, a cleaning brush and a steel wire rope, the driving motor is fixedly arranged at the middle position of the mounting frame, the output end of the driving motor penetrates through the rotating shaft fixedly connected with the mounting frame, the cleaning brush is fixedly arranged on the outer side wall of the rotating shaft, and the steel wire, the driving motor is electrically connected with an external power supply.
Preferably, one end of the steel wire rope is fixedly connected with the rotating shaft, the other end of the steel wire rope is fixedly connected with the steel ball, and a binding band is sleeved on the outer wall of the rotating shaft, so that the steel wire rope is attached to the outer side wall of the rotating shaft.
Preferably, the binding band is positioned at one end, close to the steel ball, of the outer side wall of the rotating shaft, and the length of the steel wire rope is larger than the radius of the cleaning brush.
Preferably, the middle position department of mounting bracket is equipped with the motor mounting panel, driving motor fixed mounting be in on the motor mounting panel, the ventilation groove that has a perfect understanding on the mounting bracket.
Preferably, the handle air duct is provided with a baffle plate on the outer side wall close to one end of the cleaning mechanism, the locating nail is fixedly arranged on the outer side wall of the handle air duct at the position of the baffle plate, and the baffle plate is in sliding connection with the locating nail.
Preferably, the outer side wall of the dust storage barrel is fixedly provided with a hanging rack, the outer side wall of the handle air duct is provided with a limiting hanging ring matched with the hanging rack in a clamping manner, and the limiting hanging ring is fixedly connected with the handle air duct.
Compared with the prior art, the invention has the beneficial effects that:
through setting up the handle dryer that provides negative pressure power, end position at the handle dryer sets up cleans the mechanism, usable rotation work's brush cleaner cleans dust and tiny particle impurity in the hole inslot, raise dust and tiny particle that clean the process production can be inhaled the dust storage barrel by the handle dryer in, still usable wire rope rotates the steel ball that drives the tip and hits the not hard up pitch or stone particle on hitting the hole inslot wall, hit not hard up material and hit down, then clean once more, accomplish the cleaning work to the hole groove, for the mode of manual cleaning, it is better to clean efficiency, and the raise dust that can produce absorbs in the course of the work, keep operational environment's clean and tidy.
Drawings
FIG. 1 is a schematic structural diagram of a pit cleaning device for an asphalt pavement according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a cleaning mechanism according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure view of a port of the handle air duct according to the embodiment of the present invention;
fig. 4 is a schematic top view of the cleaning mechanism according to the embodiment of the present invention.
In the above fig. 1-4, 1, a cart; 2. a dust receiving bucket; 21. a hanger; 3. an induced draft fan; 4. a handle air duct; 41. a flexible hose; 42. a limiting suspension loop; 43. a mounting frame; 431. a ventilation slot; 432. a motor mounting plate; 44. a shielding plate; 441. positioning nails; 5. a cleaning mechanism; 51. a drive motor; 52. a rotating shaft; 53. cleaning with a brush; 54. a wire rope; 541. a steel ball; 55. and (4) binding the bands.
The specific implementation mode is as follows:
the invention is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 1-4, a cleaning device for pits on asphalt pavement comprises a cart 1, a dust storage barrel 2 is fixedly arranged at the top of the cart 1, an induced draft fan 3 is fixedly connected at the top of the dust storage barrel 2, a handle air duct 4 is connected at the input end of the induced draft fan 3, a flexible hose 41 is arranged between the handle air duct 4 and the induced draft fan 3, two ends of the flexible hose 41 are respectively connected with the induced draft fan 3 and the handle air duct 4 in a sealing manner, a cleaning mechanism 5 is arranged at the end part of the handle air duct 4, an installation frame 43 is fixedly arranged on the inner side wall at the port part of the handle air duct 4, the cleaning mechanism 5 comprises a driving motor 51, a rotating shaft 52, a cleaning brush 53 and a steel wire rope 54, the driving motor 51 is fixedly arranged at the middle position of the installation frame 43, the output end of the driving motor 51 penetrates through the installation frame 43 and is fixedly connected with the rotating shaft 52, the driving motor 51 is electrically connected to an external power source.
In the embodiment, the cleaning device comprises a cart 1, a dust containing barrel 2 is fixedly arranged at the top of the cart 1, a draught fan 3 is fixedly connected at the top of the dust containing barrel 2, a handle air duct 4 is connected at the input end of the draught fan 3, the handle air duct 4 providing negative pressure power is arranged, a cleaning mechanism 5 is arranged at the end part of the handle air duct 4, when the cleaning device is used, the handle air duct 4 is held by hand, the cleaning mechanism 5 at the end part is inserted into a pit groove, dust and small particle impurities in the pit groove are cleaned by a cleaning brush 53 which rotates, raised dust and small particles generated in the cleaning process are sucked into the dust containing barrel 2 by the handle air duct 4, after primary cleaning is finished, a binding belt 55 can be opened, a bound steel wire rope 54 is released, the steel ball 541 at the end part is rotated by the steel wire rope 54 to hit loose asphalt or stone particles on the inner wall of the pit groove, and loose materials are hit down, then clean once more, alright accomplish the cleaning work to the hole groove, for the mode of manual cleaning, clean efficiency higher, and can absorb the raise dust that produces in the course of the work, keep operational environment's clean and tidy.
Specifically, wire rope 54's one end and pivot 52 fixed connection, other end fixedly connected with steel ball 541, the outer wall cover of pivot 52 is equipped with bandage 55, so that wire rope 54 laminates on the lateral wall of pivot 52, through set up steel ball 541 at wire rope 54's tip, when wire rope 54 rotates the in-process, can drive the steel ball 541 of distal end and hit the pit inslot wall, hit not hard up pitch and stone and hit and get off, it is convenient fast to clear up, after the clearance finishes, use bandage 55 with the rigidity of steel ball 541, avoid producing and hit the phenomenon.
Specifically, the binding band 55 is located at one end of the outer side wall of the rotating shaft 52, which is close to the steel ball 541, and the length of the steel wire rope 54 is greater than the radius of the cleaning brush 53, so that the steel wire rope 54 is not interfered by the cleaning brush 53 in the rotating process, and the cleaning brush 53 and the steel wire rope 54 are respectively provided with four numbers and are distributed at intervals.
Specifically, the motor mounting plate 432 is arranged in the middle of the mounting frame 43, the driving motor 51 is fixedly mounted on the motor mounting plate 432, the through ventilation groove 431 is formed in the mounting frame 43, the driving motor 51 is mounted on the rear side of the motor mounting plate 432, a certain shielding protection effect can be achieved for the driving motor 51, the driving motor cannot be hit by sucked stones, and the reserved ventilation groove 431 facilitates dust and stones to pass through (as shown in fig. 2).
Specifically, the outer side wall of the handle air duct 4 close to one end of the cleaning mechanism 5 is provided with the shielding plate 44, the positioning nail 441 is fixedly arranged at the shielding plate 44 on the outer side wall of the handle air duct 4, the shielding plate 44 is in sliding connection with the positioning nail 441, the shielding plate 44 is in a horn-mouth shape, so that dust and stones can be sucked into the handle air duct 4, the absorption range is expanded, the position of the shielding plate 44 can be adjusted, the damping effect is achieved between the shielding plate 44 and the positioning nail 441, and the position of the shielding plate 44 is convenient to fix.
Specifically, the outer side wall of the dust storage barrel 2 is fixedly provided with the hanging rack 21, the outer side wall of the handle air duct 4 is provided with the limiting hanging ring 42 matched with the hanging rack 21 in a clamping manner, the limiting hanging ring 42 is fixedly connected with the handle air duct 4, and after the dust storage barrel is used, the handle air duct 4 can be hung on the hanging rack 21 and is convenient to place the handle air duct 4.
The working principle of the invention is as follows: when using, handheld handle dryer 4, in exploring the hole groove under the mechanism 5 that cleans with the tip, utilize the cleaning brush 53 of rotation work to clean dust and the tiny particle impurity in the hole groove, raise dust and the tiny particle that clean the process production can be inhaled dust collecting vessel 2 by handle dryer 4 in, after tentatively cleaning finishing, can open bandage 55, the wire rope 54 that the release was tied up, wire rope 54 rotates this moment and drives steel ball 541 of tip portion and hit and beat not hard up pitch or stone particle on the hole inslot wall, hit not hard up material and get off, then clean once more, alright accomplish the cleaning work to the hole groove, for the mode of manual cleaning, clean efficiency higher, and can absorb the raise dust that produces in the course of the work, keep operational environment's clean and tidy.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.

Claims (6)

1. The utility model provides a bituminous paving pot hole cleaning device, its characterized in that, includes shallow (1), the top of shallow (1) has set firmly dust containing bucket (2), the top fixedly connected with draught fan (3) of dust containing bucket (2), the input of draught fan (3) is connected with handle dryer (4), be equipped with expansion hose (41) between handle dryer (4) and draught fan (3), the both ends of expansion hose (41) respectively with draught fan (3), handle dryer (4) sealing connection, the tip of handle dryer (4) is equipped with cleans mechanism (5), the port department inside wall of handle dryer (4) has set firmly mounting bracket (43), clean mechanism (5) including driving motor (51), pivot (52), brush cleaner (53) and wire rope (54), driving motor (51) fixed mounting is in the intermediate position department of mounting bracket (43), the output end of the driving motor (51) penetrates through the mounting frame (43) and the rotating shaft (52) in fixedly connected mode, the cleaning brush (53) is fixedly mounted on the outer side wall of the rotating shaft (52), the steel wire rope (54) is fixed on the rotating shaft (52) and far away from one end of the driving motor (51), and the driving motor (51) is electrically connected with an external power supply.
2. The asphalt pavement pit cleaning device as claimed in claim 1, wherein one end of said steel cable (54) is fixedly connected with said rotating shaft (52), and another end is fixedly connected with a steel ball (541), and a binding band (55) is sleeved on the outer wall of said rotating shaft (52) to make said steel cable (54) fit on the outer side wall of said rotating shaft (52).
3. The asphalt pavement pit cleaning device as claimed in claim 2, wherein said binding band (55) is located at one end of the outer side wall of said rotating shaft (52) near said steel ball (541), and the length of said wire rope (54) is greater than the radius of said sweeper brush (53).
4. The asphalt pavement pit cleaning device as claimed in claim 1, characterized in that a motor mounting plate (432) is arranged at the middle position of the mounting frame (43), the driving motor (51) is fixedly mounted on the motor mounting plate (432), and the mounting frame (43) is provided with a through ventilation groove (431).
5. The asphalt pavement pit cleaning device as claimed in claim 1, wherein a shielding plate (44) is arranged on the outer side wall of one end of the handle air duct (4) close to the cleaning mechanism (5), a positioning nail (441) is fixedly arranged on the shielding plate (44) on the outer side wall of the handle air duct (4), and the shielding plate (44) is slidably connected with the positioning nail (441).
6. The asphalt pavement pit cleaning device according to claim 1, characterized in that a hanging rack (21) is fixedly arranged on the outer side wall of the dust storage barrel (2), a limiting hanging ring (42) which is matched with the hanging rack (21) in a clamping manner is arranged on the outer side wall of the handle air cylinder (4), and the limiting hanging ring (42) is fixedly connected with the handle air cylinder (4).
CN202010205892.4A 2020-03-23 2020-03-23 Bituminous paving hole groove cleaning device Pending CN111364337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010205892.4A CN111364337A (en) 2020-03-23 2020-03-23 Bituminous paving hole groove cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010205892.4A CN111364337A (en) 2020-03-23 2020-03-23 Bituminous paving hole groove cleaning device

Publications (1)

Publication Number Publication Date
CN111364337A true CN111364337A (en) 2020-07-03

Family

ID=71204557

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010205892.4A Pending CN111364337A (en) 2020-03-23 2020-03-23 Bituminous paving hole groove cleaning device

Country Status (1)

Country Link
CN (1) CN111364337A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112275059A (en) * 2020-09-25 2021-01-29 蚌埠弘皓机电有限公司 Movable dust falling device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01232918A (en) * 1988-03-14 1989-09-18 Tokyo Electric Co Ltd Suction port body for vacuum cleaner
CN1535645A (en) * 2003-04-11 2004-10-13 乐金电子(天津)电器有限公司 Sucking device for dust collector
CN105216989A (en) * 2015-09-06 2016-01-06 江苏科技大学 Flexible cleaning device for ship attachment
CN205711666U (en) * 2016-04-19 2016-11-23 葛国松 A kind of ground cement for building cleaning car
CN106869003A (en) * 2017-04-10 2017-06-20 金华知产婺源信息技术有限公司 A kind of municipal works bridge construction road surface is removed obstacles equipment and method
CN106963293A (en) * 2017-05-26 2017-07-21 小狗电器互联网科技(北京)股份有限公司 Floor brush of dust collector and dust catcher
RO132295A0 (en) * 2017-07-27 2017-12-29 Adrian Liviu Avram Rotary duster with mechanically controlled speed
CN108086218A (en) * 2017-12-21 2018-05-29 曾小真 A kind of bridge construction is removed obstacles equipment with road surface
CN110432821A (en) * 2019-08-15 2019-11-12 程菲 A kind of deep clean dust catcher

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01232918A (en) * 1988-03-14 1989-09-18 Tokyo Electric Co Ltd Suction port body for vacuum cleaner
CN1535645A (en) * 2003-04-11 2004-10-13 乐金电子(天津)电器有限公司 Sucking device for dust collector
CN105216989A (en) * 2015-09-06 2016-01-06 江苏科技大学 Flexible cleaning device for ship attachment
CN205711666U (en) * 2016-04-19 2016-11-23 葛国松 A kind of ground cement for building cleaning car
CN106869003A (en) * 2017-04-10 2017-06-20 金华知产婺源信息技术有限公司 A kind of municipal works bridge construction road surface is removed obstacles equipment and method
CN106963293A (en) * 2017-05-26 2017-07-21 小狗电器互联网科技(北京)股份有限公司 Floor brush of dust collector and dust catcher
RO132295A0 (en) * 2017-07-27 2017-12-29 Adrian Liviu Avram Rotary duster with mechanically controlled speed
CN108086218A (en) * 2017-12-21 2018-05-29 曾小真 A kind of bridge construction is removed obstacles equipment with road surface
CN110432821A (en) * 2019-08-15 2019-11-12 程菲 A kind of deep clean dust catcher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112275059A (en) * 2020-09-25 2021-01-29 蚌埠弘皓机电有限公司 Movable dust falling device

Similar Documents

Publication Publication Date Title
CN205954539U (en) Road sweeper
CN104786125B (en) Polishing and dust collecting integrated device for concrete reinforcements on construction site
CN106087821B (en) A kind of road cleaner
CN109691929B (en) Special ceramic tile gap impact cleaning device for seam beautification
CN111364337A (en) Bituminous paving hole groove cleaning device
CN205653739U (en) Road dust collector
CN107988973A (en) A kind of outdoor ground ceramic tile gap automatic cleaning equipment
CN206392421U (en) A kind of anti-blocking aggregate screening equipment
CN208391751U (en) A kind of crack cleaning device before tile pointing
CN208136694U (en) A kind of road surface slotting machine with cleaning function
CN206662897U (en) Floor grinding mill with dedusting function
CN206425918U (en) A kind of polishing machine constructed for floor paint
CN107675655A (en) A kind of multiduty pavement engineering refuse sweeping recovery vehicle
KR20170049824A (en) Vacuum cleaners for roads and roads
CN211420828U (en) Marking line auxiliary device for road traffic safety
CN209429024U (en) A kind of pavement cleaning vehicle
CN103978416B (en) A kind of belt sander
CN205382454U (en) Hair -dryer is cleaned on road surface
CN206588754U (en) A kind of handheld drum concrete surface milling tools
CN109176810A (en) A kind of wood-structure old building repairerment processing system
CN211219967U (en) Handheld concrete solidified block shoveling device
CN205617740U (en) Ash machine is scraped to dustless wall
CN207073073U (en) Concrete surface processing unit
CN204199222U (en) A kind of Multifunction road surface cleaning machine
CN211113073U (en) Road construction is with grinding flat device

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200703