CN107297650A - A kind of grinding attachment of boron carbide air-bearing - Google Patents
A kind of grinding attachment of boron carbide air-bearing Download PDFInfo
- Publication number
- CN107297650A CN107297650A CN201710696544.XA CN201710696544A CN107297650A CN 107297650 A CN107297650 A CN 107297650A CN 201710696544 A CN201710696544 A CN 201710696544A CN 107297650 A CN107297650 A CN 107297650A
- Authority
- CN
- China
- Prior art keywords
- support
- axle
- bearing
- boron carbide
- grinding attachment
- 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
Links
- 229910052580 B4C Inorganic materials 0.000 title claims abstract description 26
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000005498 polishing Methods 0.000 claims abstract description 40
- 229910001651 emery Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 230000002421 anti-septic effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 7
- 241000237858 Gastropoda Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of grinding attachment of boron carbide air-bearing, including base, first support and second support, the first support and second support are arranged on base, the first support is arranged on the side of second support, the first support is provided with sanding apparatus, the second support is provided with fixing device, the sanding apparatus includes polishing axle, the polishing axle is rotated with first support to be connected, the first support is provided with motor, the drive end of the motor is rotatably connected to drive shaft, the drive shaft turns are connected with bevel gear, geared sleeve is socketed with the polishing axle.The present invention is simple to operate, pass through the mutual cooperation of base, polishing axle, strap, fixing axle, movable axis, worm screw and threaded collar, only need to it is fixed once just can to the internal diameter of bearing can both ends of the surface be ground, avoid and ressemble brought error, a kind of grinding attachment of boron carbide air-bearing is provided for user.
Description
Technical field
The present invention relates to precise machine machining field, more particularly to a kind of grinding attachment of boron carbide air-bearing.
Background technology
Boron carbide air-bearing part is hollow cylindrical structure, and material is boron carbide ceramics, its bearing air supporting working face
It is endoporus and two end faces, because the ultrahigh hardness of boron carbide material is only second to diamond and cubic boron nitride, main processing side
Method is to be ground using diamond abrasive and attrition process, and because boron carbide material has the low i.e. fragility of Fracture Toughness big
The characteristics of, less cutting data must be used in grinding, therefore processing efficiency is low.
The grinding process method of the usual boron carbide air-bearing is:Directly filled with the chuck of grinding machine or using collet
Cylindrical, then grinding endoporus and the both ends of the surface of card boron carbide air-bearing, due to grinding other end or remove part and survey
Axial dimension is measured, it is necessary to multiple clamping again, but the repetitive positioning accuracy of this installation way is not high, so being difficult to by mill
The precision index for reaching requirements above is cut, it is necessary to reach precision by hand lapping again.
And boron carbide air-bearing part during endoporus and cross grinding because skive can not be carried out
Line is repaired, it is necessary to repaired again after skive is dismantled from grinding machine, and skive is attached into grinding machine again
Afterwards, it can cause boron carbide material bearing parts machining accuracy and surface roughness all do not reach to use to want due to alignment error
Ask, influence part processing precision and efficiency.
The content of the invention
The invention aims to solve shortcoming present in prior art, such as:Traditional clamping positioning method is carried out
The grinding of boron carbide air-bearing inner bore of part and both ends of the surface, is repeatedly loaded and unloaded and finishing skive, it is difficult to reach institute
It is required that size and the accuracy of form and position and the grinding attachment of a kind of boron carbide air-bearing that proposes.
To achieve these goals, present invention employs following technical scheme:
A kind of grinding attachment of boron carbide air-bearing, including base, first support and second support, the first support and
Two supports are arranged on base, and the first support is arranged on the side of second support, and the first support is filled provided with polishing
Put, the second support is provided with fixing device, the sanding apparatus includes polishing axle, and the polishing axle is rotated with first support
Connection, the first support is provided with motor, and the drive end of the motor is rotatably connected to drive shaft, and the drive shaft turns connect
It is connected on bevel gear, the polishing axle and is socketed with geared sleeve, is to engage connection, described first between the geared sleeve and bevel gear
The side of support is provided with groove, and the groove is provided with retainer ring, the retainer ring and is connected with threaded collar, the polishing axle spiral shell
Line passes through threaded collar, and described a pair of straps of fixing device, the side of the second support is symmetrically fixedly connected with fixing axle,
One end of the strap is rotated with fixing axle and is connected, and bearing, two are connected between the other end of two straps
Movable axis symmetrically is rotatably connected on the individual strap, two one end of the movable axis away from strap are connected with snail
Bar, the worm screw plugs on the secondary support bracket, and the both sides of the second support are arranged with worm gear, between the worm gear and worm screw
Connected for engagement, be equipped with two worm gears between fixing groove, two fixing grooves and be provided with U-shaped fixing axle, two institutes
Worm gear is stated to connect by U-shaped fixing axle.
It is preferred that, the threaded collar is provided with multiple connectors, and the retainer ring is provided with neck, the one of the connector
End is connected on neck, and the threaded collar is provided with spring, and the spring is fixedly connected with connector.
It is preferred that, the two ends of the U-shaped fixing axle are provided with axis, and the axis passes through worm gear, the axis and worm gear it
Between be clamping.
It is preferred that, the described one end of polishing axle and worm screw away from bearing is equipped with limited block.
It is preferred that, the described one end of polishing axle away from first support is provided with emery wheel, and the emery wheel is threaded in polishing axle
On.
It is preferred that, the strap is provided with skid resistant course, and the material of the skid resistant course is antiseptic rubber.
Compared with prior art, the beneficial effects of the invention are as follows:When user uses the device, by the one of U-shaped fixing axle
End is inserted in one of in worm gear, rotates the U-shaped fixing axle, and the rotation of worm gear will drive the movement of worm screw, the moving belt of worm screw
The movement of dynamic movable axis, because strap is connected with fixing axle to rotate, strap will be rotated, and bearing is clamped in into two
Between individual strap, after bearing is clamped, the other end of U-shaped fixing axle is inserted in another worm gear, and two worm gears are by nothing
Method is rotated further by, and starts motor, and the drive end of motor drives drive shaft turns, and drive shaft drives geared sleeve to rotate, turn of geared sleeve
It is dynamic to drive polishing axle to rotate, threaded collar is socketed with polishing axle, due to being threadedly coupled between threaded collar and polishing axle, axle of polishing
It can also be moved forward while rotation, so as to polish from one end to the other side the internal diameter of bearing, due to the two ends of bearing
Face is also required to polishing, can change emery wheel, by mobile threaded collar, threaded collar can be removed from retainer ring, so polished
Axle can only just be rotated with emery wheel and can not moved, and the two ends of bearing are polished so as to realize, the device is simple to operate, led to
Cross the mutual cooperation of base, polishing axle, strap, fixing axle, movable axis, worm screw and threaded collar, it is only necessary to fix once just
Can to the internal diameter of bearing can both ends of the surface be ground, it is to avoid ressemble brought error, one kind provided for user
The grinding attachment of boron carbide air-bearing.
Brief description of the drawings
Fig. 1 is a kind of positive structure schematic of the grinding attachment of boron carbide air-bearing proposed by the present invention;
Fig. 2 is a kind of side structure schematic diagram of the grinding attachment of boron carbide air-bearing proposed by the present invention;
Fig. 3 is the structural representation at A in Fig. 1;
Fig. 4 is the structural representation at B in Fig. 2.
In figure:1 base, 2 bevel gears, 3 geared sleeves, 4 first supports, 5 polishing axles, 6 straps, 7 second supports, 8 snails
Bar, 9 fixing axles, 10 movable axis, 11 retainer rings, 12 connectors, 13 threaded collars, 14 worm gears, 15 U-shaped fixing axles.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.
In the description of the invention, it is to be understood that term " on ", " under ", "front", "rear", "left", "right", " top ",
The orientation or position relationship of the instruction such as " bottom ", " interior ", " outer " are based on orientation shown in the drawings or position relationship, merely to just
In the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Reference picture 1-4, a kind of grinding attachment of boron carbide air-bearing, including base 1, first support 4 and second support
7, first support 4 and second support 7 are arranged on base 1, and first support 4 is arranged on the side of second support 7, first support 4
Sanding apparatus is provided with, second support 7 is provided with fixing device, and sanding apparatus includes polishing axle 5, polishing axle 5 and first support 4
Connection is rotated, first support 4 is provided with motor, and the drive end of motor is rotatably connected to drive shaft, and drive shaft turns are connected with cone
Geared sleeve 3 is socketed with gear 2, polishing axle 5, to engage connection between geared sleeve 3 and bevel gear 2, the side of first support 4 is set
Fluted, groove, which is provided with retainer ring 11, retainer ring 11, is connected with threaded collar 13, and polishing axle 5 is thread through threaded collar 13, spiral shell
Line ring 13 is provided with multiple connectors 12, and retainer ring 11 is provided with neck, and one end of connector 12 is connected on neck, threaded collar
13 are provided with spring, and spring is fixedly connected with connector 12, by one end of mobile link body 12, the compression spring of connector 12,
One end of connector 12 will remove retainer ring 11, and threaded collar 13, which can be just removed, to be come, so that threaded collar 13 will not be to polishing axle 5
Effect, can only rotate and immovable, a pair of straps of fixing device 6, the side of second support 7 is symmetrically fixedly connected with
Fixing axle 9, one end of strap 6 is rotated with fixing axle 9 to be connected, and bearing is connected between the other end of two straps 6,
Movable axis 10 symmetrically is rotatably connected on two straps 6, two one end of movable axis 10 away from strap 6 are connected with snail
Bar 8, strap 6 is provided with skid resistant course, and the material of skid resistant course is antiseptic rubber, is anti-because strap 6 clamps bearing
Only bearing, which comes off, uses skid resistant course, while antiseptic rubber also avoids the abrasion to bearing outside surface, worm screw 8 is plugged in second support
On 7, the both sides of second support 7 are arranged with worm gear 14, equal on connection, two worm gears 14 to engage between worm gear 14 and worm screw 8
Provided with fixing groove, U-shaped fixing axle 15 is provided between two fixing grooves, two worm gears 14 are connected by U-shaped fixing axle 15, U-shaped solid
The two ends of dead axle 15 are provided with axis, and axis passes through worm gear 14, are clamping between axis and worm gear 14, pass through U-shaped fixing axle 15
The one of worm gear 14 of one end clamping, rotates worm gear 14, thus mobile worm screw 8, when worm screw 8 is moved to correct position, U
The other end of type fixing axle 15 fixes another worm gear 14 again, so that two U-shaped fixing axles 14 can not be rotated, worm screw 8
Position also will be fixed, the one end of polishing axle 5 and worm screw 8 away from bearing is equipped with limited block, and limited block plays spacing effect,
Control polishing axle 5 and the maximum range of activities of worm screw 8, the one end of polishing axle 5 away from first support 4 is provided with emery wheel, emery wheel screw thread
It is connected on polishing axle 5, the inside of mill wheel set bearing is polished, and threaded connection facilitates the replacing of emery wheel, changes different model
Emery wheel, the two ends of bearing are polished.
In the present invention, when user uses the device, one end of U-shaped fixing axle 15 is inserted in one of in worm gear 14,
The U-shaped fixing axle 15 is rotated, the rotation of worm gear 14 will drive the movement of worm screw 8, the shifting of the mobile drive movable axis 10 of worm screw 8
Dynamic, because strap 6 is connected with fixing axle 9 to rotate, strap 6 will be rotated, and bearing is clamped in into two geometrical clamps
Between plate 6, after bearing is clamped, the other end of U-shaped fixing axle 15 is inserted in another worm gear 14, and two worm gears 14 will be unable to
It is rotated further by, starts motor, the drive end of motor drives drive shaft turns, and drive shaft drives geared sleeve 3 to rotate, turn of geared sleeve 3
It is dynamic to drive polishing axle 5 to rotate, threaded collar 13 is socketed with polishing axle 5, due to connecting between threaded collar 13 and polishing axle 5 for screw thread
Connect, polishing axle 5 can also be moved forward while rotation, so that the internal diameter of bearing is polished from one end to the other side, due to
The both ends of the surface of bearing are also required to polishing, can change emery wheel, by mobile threaded collar 13, can be by threaded collar 13 from retainer ring 11
On remove, so polish axle 5 just can only with emery wheel rotate and can not move, the two ends of bearing are polished so as to realize.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of grinding attachment of boron carbide air-bearing, including base(1), first support(4)And second support(7), it is described
First support(4)And second support(7)It is arranged on base(1)On, the first support(4)It is arranged on second support(7)One
Side, it is characterised in that the first support(4)It is provided with sanding apparatus, the second support(7)It is provided with fixing device, institute
Stating sanding apparatus includes polishing axle(5), the polishing axle(5)With first support(4)Rotate connection, the first support(4)On
Provided with motor, the drive end of the motor is rotatably connected to drive shaft, and the drive shaft turns are connected with bevel gear(2), it is described
Polishing axle(5)On be socketed with geared sleeve(3), the geared sleeve(3)With bevel gear(2)Between for engagement connection, described first
Frame(4)Side be provided with groove, the groove be provided with retainer ring(11), the retainer ring(11)On be connected with threaded collar
(13), the polishing axle(5)It is thread through threaded collar(13), described a pair of straps of fixing device(6), the second support
(7)Side be symmetrically fixedly connected with fixing axle(9), the strap(6)One end and fixing axle(9)Rotate connection, two
The individual strap(6)The other end between be connected with bearing, two straps(6)On be symmetrically rotatably connected to work
Moving axis(10), two movable axis(10)Away from strap(6)One end be connected with worm screw(8), the worm screw(8)Plug
In second support(7)On, the second support(7)Both sides be arranged with worm gear(14), the worm gear(14)With worm screw(8)It
Between for engagement connection, two worm gears(14)On be equipped between fixing groove, two fixing grooves be provided with U-shaped fixing axle
(15), two worm gears(14)Pass through U-shaped fixing axle(15)Connection.
2. a kind of grinding attachment of boron carbide air-bearing according to claim 1, it is characterised in that the threaded collar
(13)It is provided with multiple connectors(12), the retainer ring(11)It is provided with neck, the connector(12)One end be connected to
On neck, the threaded collar(13)It is provided with spring, the spring and connector(12)It is fixedly connected.
3. a kind of grinding attachment of boron carbide air-bearing according to claim 1, it is characterised in that the U-shaped fixation
Axle(15)Two ends be provided with axis, the axis pass through worm gear(14), the axis and worm gear(14)Between be clamping.
4. a kind of grinding attachment of boron carbide air-bearing according to claim 1, it is characterised in that the polishing axle
(5)And worm screw(8)One end away from bearing is equipped with limited block.
5. a kind of grinding attachment of boron carbide air-bearing according to claim 1, it is characterised in that the polishing axle
(5)Away from first support(4)One end be provided with emery wheel, the emery wheel is threaded in polishing axle(5)On.
6. a kind of grinding attachment of boron carbide air-bearing according to claim 1, it is characterised in that the strap
(6)Skid resistant course is provided with, the material of the skid resistant course is antiseptic rubber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710696544.XA CN107297650A (en) | 2017-08-15 | 2017-08-15 | A kind of grinding attachment of boron carbide air-bearing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710696544.XA CN107297650A (en) | 2017-08-15 | 2017-08-15 | A kind of grinding attachment of boron carbide air-bearing |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107297650A true CN107297650A (en) | 2017-10-27 |
Family
ID=60131812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710696544.XA Pending CN107297650A (en) | 2017-08-15 | 2017-08-15 | A kind of grinding attachment of boron carbide air-bearing |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107297650A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108356620A (en) * | 2018-01-26 | 2018-08-03 | 嘉兴裕盛精密机械有限公司 | A kind of polishing component in aluminium section bar process equipment |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB356688A (en) * | 1929-03-22 | 1931-09-03 | Reishauer Werkzeuge Ag | Improvements in and relating to toothed-wheel grinding machines |
WO2005106284A1 (en) * | 2004-04-28 | 2005-11-10 | Peiseler Gmbh & Co.Kg | Worm gear pair |
CN201342601Y (en) * | 2008-12-25 | 2009-11-11 | 顾建锋 | Flap swing control device of crystal surface grinder |
WO2014064855A1 (en) * | 2012-10-22 | 2014-05-01 | 坂東機工株式会社 | Glass plate grinding method and grinding device |
CN204913501U (en) * | 2015-05-13 | 2015-12-30 | 浙江勒托新材料有限公司 | A milling machine for processing emery wheel |
CN105269456A (en) * | 2015-11-13 | 2016-01-27 | 西安航天精密机电研究所 | Grinding device and method for boron carbide gas bearing |
CN207027130U (en) * | 2017-08-15 | 2018-02-23 | 郑州恒生科技有限公司 | A kind of grinding attachment of boron carbide air-bearing |
-
2017
- 2017-08-15 CN CN201710696544.XA patent/CN107297650A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB356688A (en) * | 1929-03-22 | 1931-09-03 | Reishauer Werkzeuge Ag | Improvements in and relating to toothed-wheel grinding machines |
WO2005106284A1 (en) * | 2004-04-28 | 2005-11-10 | Peiseler Gmbh & Co.Kg | Worm gear pair |
CN201342601Y (en) * | 2008-12-25 | 2009-11-11 | 顾建锋 | Flap swing control device of crystal surface grinder |
WO2014064855A1 (en) * | 2012-10-22 | 2014-05-01 | 坂東機工株式会社 | Glass plate grinding method and grinding device |
CN204913501U (en) * | 2015-05-13 | 2015-12-30 | 浙江勒托新材料有限公司 | A milling machine for processing emery wheel |
CN105269456A (en) * | 2015-11-13 | 2016-01-27 | 西安航天精密机电研究所 | Grinding device and method for boron carbide gas bearing |
CN207027130U (en) * | 2017-08-15 | 2018-02-23 | 郑州恒生科技有限公司 | A kind of grinding attachment of boron carbide air-bearing |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108356620A (en) * | 2018-01-26 | 2018-08-03 | 嘉兴裕盛精密机械有限公司 | A kind of polishing component in aluminium section bar process equipment |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107745326A (en) | Straight tube inner surface burnishing device | |
CN207027130U (en) | A kind of grinding attachment of boron carbide air-bearing | |
CN107297650A (en) | A kind of grinding attachment of boron carbide air-bearing | |
CN103240646A (en) | Conical rod piece drive positioning tooling and cylindrical grinding machine | |
CN210458809U (en) | Two formula ballastless tracks polish and use rail to locking piece | |
JP2002361543A (en) | Internal surface grinding device | |
CN108857852B (en) | Flexible grinding head for grinding ceramic piston rod | |
GB1023198A (en) | Centreless honing device | |
CN216883179U (en) | Head walking type follow-up grinding machine suitable for processing inner and outer curves | |
CN207464951U (en) | Straight tube inner surface burnishing device | |
CN110142682A (en) | A kind of mechanical workpieces polissoir | |
JP2007021587A (en) | Method of polishing groove in workpiece | |
KR101124997B1 (en) | Grinding machine for metal specimen | |
CN211589712U (en) | Multi-angle adjusting workbench for grinding machine | |
CN206273493U (en) | A kind of axle centre-hole lapping machine | |
CN109514010B (en) | Spiral cylinder internal gear tooth socket grinding device | |
US1497951A (en) | Portable power lathe and grinding machine | |
CN210281865U (en) | Grinding mechanism | |
KR20160087211A (en) | Hybrid dry type and wet type polishing apparatus for fiber reinforced plastic and hybrid dry type and wet type polishing method using the same | |
US1395391A (en) | Device for truing and dressing grinding-wheels | |
US2564496A (en) | Step drill grinder | |
CN204819115U (en) | Grind spindle unit of ceramic lock pin hole | |
CN204565869U (en) | Automatic pusher | |
CN211220248U (en) | Numerical control grinding machine tool with clamping mechanism | |
CN221020175U (en) | Device for automatically processing inner hole of gear |
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: 20171027 |