CN110254086A - It is a kind of can automatic angulation compasses - Google Patents
It is a kind of can automatic angulation compasses Download PDFInfo
- Publication number
- CN110254086A CN110254086A CN201910361078.9A CN201910361078A CN110254086A CN 110254086 A CN110254086 A CN 110254086A CN 201910361078 A CN201910361078 A CN 201910361078A CN 110254086 A CN110254086 A CN 110254086A
- Authority
- CN
- China
- Prior art keywords
- sliding
- slot
- block
- bar
- rotation
- 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- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L9/00—Circular curve-drawing or like instruments
- B43L9/02—Compasses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/16—Compasses, i.e. with a pair of pivoted arms
- G01B3/166—Compasses, i.e. with a pair of pivoted arms provided with a measuring scale
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Toys (AREA)
Abstract
The invention discloses it is a kind of can automatic angulation compasses, including worm gear, the switch block upper end is installed with shaft, the switch block front end face is equipped with display, sliding slot is equipped on the downside of the display, sliding is equipped with slide bar in the sliding slot, it communicates in the sliding slot upper end wall equipped with limiting slot, sliding is equipped with the displacement sensor being connected with the slide bar in the limiting slot, the displacement sensor can measure its moving displacement, to control the display, it communicates with the outside world on the right side of the sliding slot equipped with turn trough, drawing bar is equipped with by the rotation of solid axis in the turn trough, the configuration of the present invention is simple, it is easy to operate, stablize position after drawing bar stretches, it draws accurate, and when drawing, supporting leg lower end is provided with bearing piece, it protects drawing paper or drawing board not to be damaged to penetrate, secondly, this compasses can directly measure drawn arc radius and angle, user Just.
Description
Technical field
The present invention relates to technical field of stationery, specially it is a kind of can automatic angulation compasses.
Background technique
Existing compasses supporting leg lower end is provided only with compasses point, and the center of circle to circular arc positions, then when drawing, hand, which is given, to be propped up
When the pressure of leg increases, it will lead to compasses point and penetrate drawing paper, secondly, drawing bar is adjusted by stretching manually, it is not set instant
Locking device, then when drawing, drawing bar easy glide causes the drafting of circular arc unsmooth, and not directly measures the angle of circular arc,
Therefore, compasses in the prior art are further improved, to improve the ease of use of compasses.
Summary of the invention
The purpose of the present invention is to provide it is a kind of can automatic angulation compasses, for overcoming in the prior art above-mentioned lack
It falls into.
One kind according to the present invention can automatic angulation compasses, including worm gear, the switch block upper end is installed with shaft, described
Switch block front end face is equipped with display, and sliding slot is equipped on the downside of the display, and sliding is equipped with slide bar in the sliding slot, and the slide bar is left
It is installed with reset spring between end and the sliding slot, is communicated in the sliding slot upper end wall equipped with limiting slot, it is sliding in the limiting slot
Dynamic to be equipped with the displacement sensor being connected with the slide bar, the displacement sensor can measure its moving displacement, described aobvious to control
Show device, communicate with the outside world on the right side of the sliding slot equipped with turn trough, drawing bar, the drawing are equipped with by the rotation of solid axis in the turn trough
Rotating device is equipped on front side of bar, the rotating device is connected by power with the drawing bar, is equipped in the drawing bar and is pushed away slot, described
It pushes away sliding in slot and is equipped with pushing block, the slide bar right end and the pushing block are rotatablely connected, and described push away is equipped with plotting unit, institute on the downside of slot
It states plotting unit to abut with the pushing block, supporting leg is equipped on the left of the drawing bar, the supporting leg upper end and shaft rotation connect
It connects, the supporting leg lower end is installed with bearing piece, and ring cavity is equipped in the supporting leg, and the ring cavity lower end wall is installed with the scale of annular
Disk, the dial is interior to be equipped with annular groove, and sliding is equipped with sliding block in the annular groove, and the sliding block right end is installed with pointer, the cunning
It is equipped with the perforative perforation in left and right in block, communicates in the ring cavity upper end wall equipped with annular guide channel, the upper end of slide block is led with described
Slot is slidably connected, and the ring cavity central rotational is equipped with reel, and fixation, which is arranged with material hardness, on the reel can wind greatly
Drawstring, the drawstring right end is connected through the perforation with the drawing bar, and the company's of being equipped with chamber, institute are communicated on the downside of the reel
The mandrel lower end and company's chamber lower end wall for stating reel are rotatablely connected, and runner is installed on the mandrel, is consolidated on the runner
Surely it is arranged with clockwork spring, the clockwork spring other end and the intracavitary end wall of the company are connected；The drawing bar stretching distance passes through described aobvious
Show that device is shown, the drawing bar rotational angle can be shown on the dial.
Further technical solution, the rotating device are included in the fixed worm gear in the solid axis front end, on the worm gear
End engagement is connected with worm screw, and the bull stick of left end and the rotation connection of turn trough left end wall is installed at the worm screw axle center, described
Bull stick right end extends to the external world and is installed with torsion block；Rotating the torsion block rotates the drawing bar, adjusts the drawing bar
The distance between described supporting leg, i.e. half path length of circular arc.
Further technical solution, the plotting unit include and the indent for pushing away slot and communicating, the interior sliding of the indent
Equipped with the compression bar that upper end is abutted with the pushing block, compression bar right side is installed with the reset assembly to reset the compression bar,
The compression bar lower end rotation is equipped with connecting rod, communicates on the downside of the indent equipped with regulating tank, between the regulating tank and the indent
Connection is equipped with even slot, and sliding is equipped with company's block be rotatablely connected with the connecting rod lower end in the regulating tank, the even block left end and
Pressure spring is installed between the regulating tank, wherein the reset assembly elasticity is greater than the pressure spring, communicates on the downside of the regulating tank
Equipped with fluting, rotation is equipped with penholder in the fluting, and the through slot with the even block rotation connection, the pen are equipped in the penholder
Mounting device is equipped in bar, the mounting device is to arc track of painting；The drawing bar stretches between the supporting leg
Apart from when, by compression bar, so that the penholder is in plumbness with drawing surface always.
Further technical solution, the mounting device include downward opening empty slot, and sliding is equipped with down in the empty slot
The pen core abutted with the drawing surface is held, is communicated in the empty slot right end wall equipped with groove, sliding is equipped with left end in the groove
Face is the gripping block of flexible non-slip mat, and the gripping block left end is abutted with the pen core, and the gripping block right end rotation is equipped with spiral shell
Line axis, the groove right side are in communication with the outside equipped with thread groove, and the thread spindle right end extends to the external world through the thread groove；
The thread spindle rotation, pushes gripping block to be moved to the left and clamps pen core.
The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, by the self-locking of worm and wheel so that drawing
Position after figure bar stretches is stablized, and when drawing accurate, and drawing, supporting leg lower end is provided with bearing piece, can reduce the pressure of supporting leg, is protected
Shield drawing paper or drawing board are not damaged and penetrate, secondly, this compasses can directly measure drawn arc radius and angle, use
It is convenient.
Detailed description of the invention
Fig. 1 be it is of the invention it is a kind of can automatic angulation compasses inside overall structure diagram；
Fig. 2 is " A " enlarged structure schematic diagram in Fig. 1 in the present invention；
Fig. 3 is " B " enlarged structure schematic diagram in Fig. 1 in the present invention；
Fig. 4 is " C " enlarged structure schematic diagram in Fig. 1 in the present invention；
Fig. 5 is " D " enlarged structure schematic diagram in Fig. 1 in the present invention.
Specific embodiment
Below with reference to Fig. 1-5, the present invention is described in detail, for sake of convenience, now such as to hereafter described orientation regulation
Under: hereafter described left-right and front-back up and down direction is consistent with the left-right and front-back up and down direction of Fig. 1 projection relation itself.
Referring to Fig.1-5, embodiment according to the present invention it is a kind of can automatic angulation compasses, including worm gear 20, described turn
10 upper end of block is installed with shaft 11, and 10 front end face of switch block is equipped with display 12, is equipped with sliding slot 13 on the downside of the display 12,
Sliding is equipped with slide bar 14 in the sliding slot 13, is installed with reset spring 15, institute between 14 left end of slide bar and the sliding slot 13
It states and is communicated in 13 upper end wall of sliding slot equipped with limiting slot 16, the interior sliding of the limiting slot 16 is equipped with the displacement being connected with the slide bar 14
Inductor 17, the displacement sensor 17 can measure its moving displacement, to control the display 12,13 right side of sliding slot with
The external world is communicated equipped with turn trough 18, and the turn trough 18 is interior to be equipped with drawing bar 24 by the rotation of solid axis 19, is set on front side of the drawing bar 24
There is rotating device 100, the rotating device 100 is connected by power with the drawing bar 24, and it is equipped in the drawing bar 24 and pushes away slot 25,
Described push away is slided in slot 25 equipped with pushing block 26, and 14 right end of slide bar and the pushing block 26 are rotatablely connected, described to push away 25 downside of slot
Equipped with plotting unit 200, the plotting unit 200 is abutted with the pushing block 26, and supporting leg 43, institute are equipped on the left of the drawing bar 24
It states 43 upper end of supporting leg and the shaft 11 is rotatablely connected, 43 lower end of supporting leg is installed with bearing piece 57, is equipped in the supporting leg 43
Ring cavity 44,44 lower end wall of ring cavity are installed with the dial 45 of annular, are equipped with annular groove 46, the annular groove in the dial 45
Sliding is equipped with sliding block 48 in 46, and 48 right end of sliding block is installed with pointer 49, is equipped with the perforative perforation in left and right in the sliding block 48
53, it communicates equipped with annular guide channel 47 in 44 upper end wall of ring cavity, 48 upper end of sliding block is slidably connected with the guide groove 47, institute
It states 44 central rotational of ring cavity and is equipped with reel 51, fixation is arranged with material hardness drawstring collapsible greatly on the reel 51
52,52 right end of drawstring is connected through the perforation 53 with the drawing bar 24, and the company of being equipped with is communicated on the downside of the reel 51
Chamber 54,50 lower end of mandrel of the reel 51 and even 54 lower end wall of chamber are rotatablely connected, and are installed with and are turned on the mandrel 50
55 are taken turns, is fixed on the runner 55 and is arranged with clockwork spring 56,56 other end of clockwork spring and even 54 inner end wall of chamber are connected；It is described
24 stretching distance of drawing bar shows that 24 rotational angle of drawing bar can be shown on the dial 45 by the display 12
Show.
Valuably, the rotating device 100 is included in the fixed worm gear 20 in solid 19 front end of axis, 20 upper end of worm gear
Engagement is connected with worm screw 21, and the bull stick of left end and the 18 left end wall of turn trough rotation connection is installed at 21 axle center of worm screw
22,22 right end of bull stick, which extends to the external world and is installed with, turns round block 23；Rotating the torsion block 23 rotates the drawing bar 24,
Adjust the distance between the drawing bar 24 and described supporting leg 43, i.e. half path length of circular arc.
Valuably, the plotting unit 200 includes setting with the indent 28 for pushing away slot 25 and communicating, the interior sliding of the indent 28
The compression bar 27 for having upper end to abut with the pushing block 26,27 right side of compression bar are installed with the reset to reset the compression bar 27
Component 58,27 lower end of the compression bar rotation are equipped with connecting rod 30, communicate on the downside of the indent 28 equipped with regulating tank 31, the regulating tank
The company's of being equipped with slot 29 is connected between 31 and the indent 28, sliding is equipped with to rotate with 30 lower end of connecting rod and connect in the regulating tank 31
The company's block 32 connect, it is described to be even installed with pressure spring 33 between 32 left end of block and the regulating tank 31, wherein 58 bullet of reset assembly
Property be greater than the pressure spring 33, communicate on the downside of the regulating tank 31 and be equipped with fluting 35, rotation is equipped with penholder 36, institute in the fluting 35
The through slot 34 being equipped in penholder 36 with even block 32 rotation connection is stated, is equipped with mounting device 300, the peace in the penholder 36
Assembling device 300 is to arc track of painting；When the drawing bar 24 stretches the distance between described supporting leg 43, pass through compression bar
27, so that the penholder 36 is in plumbness with drawing surface always.
Valuably, the mounting device 300 includes downward opening empty slot 37, in the empty slot 37 sliding be equipped with lower end with
The pen core 38 that the drawing surface abuts communicates in the 37 right end wall of empty slot equipped with groove 39, and sliding is equipped in the groove 39
Left side is the gripping block 41 of flexible non-slip mat, and 41 left end of gripping block is abutted with the pen core 38, and the gripping block 41 is right
End rotation is equipped with thread spindle 42, is in communication with the outside on the right side of the groove 39 equipped with thread groove 40,42 right end of thread spindle runs through
The thread groove 40 extends to the external world；The thread spindle 42 rotates, and pushes gripping block 41 to be moved to the left and clamps pen core 38.
When original state, 24 left side of drawing bar is abutted with 43 right side of supporting leg, and pointer 49 indicates zero degree.
When work, 43 lower end of supporting leg is overlapped with the center of circle of drawn circular arc, and 57 lower end surface of bearing piece is abutted with drawing surface, then is justified
It advises in use process, the pressure of shaft 11 is divided to bearing piece 57, and 43 lower end of supporting leg is avoided to penetrate drawing surface, and then, rotation is turned round
Block 23 drives worm screw 21 to rotate, then worm gear 20 rotates, so that drawing bar 24 is rotated to far from 43 side of supporting leg, then slide bar 14 is to the right
It stretches, displacement sensor 17 is driven to move to right, surveying mapping bar 24 moves horizontally difference between supporting leg 43 after rotating, this data is logical
Half path length that display 12 shows and is expressed as circular arc is crossed, in 24 rotation process of drawing bar, pushing block 26 squeezes compression bar 27 and declines,
By connecting rod 30 company's block 32 is moved to right, then penholder 36 rotates clockwise and make penholder 36 and drawing surface to remain vertical configuration
State, thereafter, rotating shaft 11, then switch block 10 drives drawing bar 24 to rotate, sliding along annular groove 46 with movable slider 48 by drawstring 52
Dynamic, then the number that pointer 49 indicates on dial 45 is the angle of drawn circular arc.
The beneficial effects of the present invention are: the configuration of the present invention is simple, easy to operate, by the self-locking of worm and wheel so that drawing
Position after figure bar stretches is stablized, and when drawing accurate, and drawing, supporting leg lower end is provided with bearing piece, can reduce the pressure of supporting leg, is protected
Shield drawing paper or drawing board are not damaged and penetrate, secondly, this compasses can directly measure drawn arc radius and angle, use
It is convenient.
Those skilled in the art can define, can in the case of not departing from overall spirit of the invention and design
To make the various modifications for above embodiments.It falls within the scope of protection of the present invention.Protection scheme of the invention
It is subject to claims appended hereto.
Claims (4)
1. one kind can automatic angulation compasses, including worm gear, the switch block upper end be installed with shaft, and the switch block front end face is equipped with
Display is equipped with sliding slot on the downside of the display, and sliding is equipped with slide bar in the sliding slot, the slide bar left end and the sliding slot it
Between be installed with reset spring, communicate in the sliding slot upper end wall equipped with limiting slot, sliding is equipped with and the cunning in the limiting slot
The connected displacement sensor of bar, the displacement sensor can measure its moving displacement, and to control the display, the sliding slot is right
Side is communicated with the outside world equipped with turn trough, is equipped with drawing bar by the rotation of solid axis in the turn trough, is equipped with rotation on front side of the drawing bar
Device, the rotating device are connected by power with the drawing bar, are equipped in the drawing bar and are pushed away slot, described to push away sliding in slot and be equipped with
Pushing block, the slide bar right end and the pushing block are rotatablely connected, and described push away is equipped with plotting unit, the plotting unit and institute on the downside of slot
Pushing block abutting is stated, supporting leg is equipped on the left of the drawing bar, the supporting leg upper end and the shaft are rotatablely connected, the supporting leg lower end
It is installed with bearing piece, ring cavity is equipped in the supporting leg, the ring cavity lower end wall is installed with the dial of annular, sets in the dial
There is annular groove, sliding is equipped with sliding block in the annular groove, and the sliding block right end is installed with pointer, and it is perforative to be equipped with left and right in the sliding block
It perforates, communicates in the ring cavity upper end wall equipped with annular guide channel, the upper end of slide block is slidably connected with the guide groove, the ring cavity
Central rotational is equipped with reel, and fixation is arranged with material hardness drawstring collapsible greatly, the drawstring right end on the reel
It is connected through the perforation with the drawing bar, the company's of being equipped with chamber, the mandrel lower end of the reel is communicated on the downside of the reel
It is rotatablely connected with the even chamber lower end wall, runner is installed on the mandrel, fixation is arranged with clockwork spring, the hair on the runner
The other end and the intracavitary end wall of the company are connected；The drawing bar stretching distance shown by the display, the drawing bar
Rotational angle can be shown on the dial.
2. one kind according to claim 1 can automatic angulation compasses, it is characterised in that: the rotating device is included in institute
The fixed worm gear in solid axis front end is stated, the worm gear upper end engagement is connected with worm screw, is installed with left end and institute at the worm screw axle center
The bull stick of turn trough left end wall rotation connection is stated, the bull stick right end extends to the external world and is installed with torsion block；Rotating the torsion block makes
The drawing bar rotation is obtained, the distance between the drawing bar and the supporting leg, i.e. half path length of circular arc are adjusted.
3. one kind according to claim 1 can automatic angulation compasses, it is characterised in that: the plotting unit includes and institute
It states and pushes away the indent that slot communicates, sliding is equipped with the compression bar that upper end is abutted with the pushing block in the indent, and the compression bar right side is solid
Equipped with the reset assembly to reset the compression bar, the compression bar lower end rotation is equipped with connecting rod, communicates and is equipped on the downside of the indent
Regulating tank is connected to the company's of being equipped with slot between the regulating tank and the indent, in the regulating tank sliding be equipped with under the connecting rod
Company's block of rotation connection is held, it is described to be even installed with pressure spring between block left end and the regulating tank, wherein the reset assembly elasticity
It greater than the pressure spring, is communicated on the downside of the regulating tank and is equipped with fluting, rotation is equipped with penholder in the fluting, is equipped in the penholder
With the through slot of the even block rotation connection, the penholder is interior to be equipped with mounting device, and the mounting device is to arc track of painting；
When the drawing bar stretches the distance between described supporting leg, by compression bar, hang down so that the penholder is in drawing surface always
Straight state.
4. one kind according to claim 3 can automatic angulation compasses, it is characterised in that: the mounting device includes opening
Empty slot directed downwardly, the interior sliding of the empty slot are equipped with the pen core that lower end is abutted with the drawing surface, communicate in the empty slot right end wall
Equipped with groove, sliding is equipped with the gripping block that left side is flexible non-slip mat, the gripping block left end and the pen in the groove
Core abuts, and the gripping block right end rotation is equipped with thread spindle, is in communication with the outside on the right side of the groove equipped with thread groove, the screw thread
Axis right end extends to the external world through the thread groove；The thread spindle rotation, pushes gripping block to be moved to the left and clamps pen core.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361078.9A CN110254086A (en) | 2019-04-30 | 2019-04-30 | It is a kind of can automatic angulation compasses |
| JP2019115028A JP6620284B1 (en) | 2019-04-30 | 2019-06-20 | Compass that can measure angle automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910361078.9A CN110254086A (en) | 2019-04-30 | 2019-04-30 | It is a kind of can automatic angulation compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110254086A true CN110254086A (en) | 2019-09-20 |
Family
ID=67913950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910361078.9A Withdrawn CN110254086A (en) | 2019-04-30 | 2019-04-30 | It is a kind of can automatic angulation compasses |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6620284B1 (en) |
| CN (1) | CN110254086A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112046177B (en) * | 2020-09-21 | 2022-04-29 | 山东工业职业学院 | Pencil sharpening method of compasses with self-supporting paintbrushes |
| CN112046176B (en) * | 2020-09-21 | 2022-07-01 | 山东工业职业学院 | Compasses with self-holding painting brush |
| CN113739671B (en) * | 2021-09-03 | 2023-09-19 | 中国十七冶集团有限公司 | Elastic self-adaptive floor thickness detection device and construction method |
| CN115416418A (en) * | 2022-10-20 | 2022-12-02 | 上海第二工业大学 | Compasses |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394863A (en) * | 1972-05-30 | 1975-05-21 | Osmund Fabriks Ab | Compasses |
| CN2468757Y (en) * | 2001-03-21 | 2002-01-02 | 程峰 | Multi-functional compass for teaching use |
| CN201272144Y (en) * | 2008-07-01 | 2009-07-15 | 顾丽雯 | Compass with directly measurable distance of two feet |
| CN202115201U (en) * | 2011-05-26 | 2012-01-18 | 上海市格致初级中学 | Compass capable of display degree of angle |
| CN204055072U (en) * | 2014-07-18 | 2014-12-31 | 骆柏兵 | A kind of automatic rotation compasses |
| CN104309370A (en) * | 2014-11-05 | 2015-01-28 | 黄赞谟 | Fixed shaft compass |
| CN107856446A (en) * | 2017-11-16 | 2018-03-30 | 周默 | A kind of modified form compasses |
| CN208277704U (en) * | 2017-09-07 | 2018-12-25 | 韦孺聪 | A kind of educational compasses of accurate Drawing radius |
-
2019
- 2019-04-30 CN CN201910361078.9A patent/CN110254086A/en not_active Withdrawn
- 2019-06-20 JP JP2019115028A patent/JP6620284B1/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394863A (en) * | 1972-05-30 | 1975-05-21 | Osmund Fabriks Ab | Compasses |
| CN2468757Y (en) * | 2001-03-21 | 2002-01-02 | 程峰 | Multi-functional compass for teaching use |
| CN201272144Y (en) * | 2008-07-01 | 2009-07-15 | 顾丽雯 | Compass with directly measurable distance of two feet |
| CN202115201U (en) * | 2011-05-26 | 2012-01-18 | 上海市格致初级中学 | Compass capable of display degree of angle |
| CN204055072U (en) * | 2014-07-18 | 2014-12-31 | 骆柏兵 | A kind of automatic rotation compasses |
| CN104309370A (en) * | 2014-11-05 | 2015-01-28 | 黄赞谟 | Fixed shaft compass |
| CN208277704U (en) * | 2017-09-07 | 2018-12-25 | 韦孺聪 | A kind of educational compasses of accurate Drawing radius |
| CN107856446A (en) * | 2017-11-16 | 2018-03-30 | 周默 | A kind of modified form compasses |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6620284B1 (en) | 2019-12-18 |
| JP2020183930A (en) | 2020-11-12 |
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| 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: 20190920 |
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| WW01 | Invention patent application withdrawn after publication |