CN106111254B - A kind of pressure roller of roll squeezer - Google Patents
A kind of pressure roller of roll squeezer Download PDFInfo
- Publication number
- CN106111254B CN106111254B CN201610735580.8A CN201610735580A CN106111254B CN 106111254 B CN106111254 B CN 106111254B CN 201610735580 A CN201610735580 A CN 201610735580A CN 106111254 B CN106111254 B CN 106111254B
- Authority
- CN
- China
- Prior art keywords
- wear
- briquetting
- resisting
- axle sleeve
- resisting briquetting
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a kind of pressure rollers of roll squeezer, including main shaft and cover the axle sleeve on the main shaft, the wear-resisting briquetting of a circle is symmetrically arranged in the outer surface of axle sleeve, the wear-resisting briquetting is set as strip, it is arranged closely in sleeve outer surface side by side, it is provided with wedge-shaped boss below each wear-resisting briquetting, the corresponding position of axle sleeve is provided with the compatible wedge groove of shape.A kind of pressure roller of roll squeezer of the invention, dismountable wear-resisting briquetting is set on the outside of axle sleeve, wear-resisting briquetting passes through wedge-shaped boss and is inserted into the wedge groove on axle sleeve, after wear-resisting briquetting is using abrasion, repair and replacement are convenient, no replacement is required entire axle sleeve, reduces maintenance cost, extends the service life of whole equipment while improving efficiency.
Description
Technical field
The present invention relates to mechanical equipment technical field, in particular to a kind of pressure roller of roll squeezer.
Background technique
Pressure roller is usually to be used in rolling device, for grinding or comminuting matter.It is when usual pressure roller crushing material
It is realized using the protrusion that press roller base body surface is arranged in.
The roller structure of existing roll squeezer is exactly that axle sleeve is covered on main shaft, and boss surfaces have wearing layer, in roll squeezer main shaft
By the wearing layer of boss surfaces come pressing materials on rotary course, to achieve the effect that grinding or comminuting matter.But it is wear-resisting
After layer abrasion, it is necessary to which, to wearing layer repair welding or replacement axle sleeve, on the one hand the heavy workload when wearing layer is in repair welding, not square
Just, if replacement axle sleeve maintenance cost is again very high.
Summary of the invention
The convenient pressure roller low with maintenance cost of replacement is used the object of the present invention is to provide a kind of.
To achieve the above object, it the present invention provides a kind of pressure roller of roll squeezer, including main shaft and covers on the main shaft
Axle sleeve, be symmetrically arranged with the wear-resisting briquetting of a circle in the outer surface of axle sleeve, the wear-resisting briquetting is set as strip, side by side close row
It is listed in sleeve outer surface, is provided with wedge-shaped boss below each wear-resisting briquetting, is arranged in the corresponding position of axle sleeve
There is the compatible wedge groove of shape.Dismountable wear-resisting briquetting is arranged in a kind of pressure roller of roll squeezer of the invention on the outside of axle sleeve,
Wear-resisting briquetting passes through wedge-shaped boss and is inserted into the wedge groove on axle sleeve, and after wear-resisting briquetting is using abrasion, repair and replacement are convenient, is not necessarily to
Entire axle sleeve is replaced, maintenance cost is reduced while improving efficiency, extends the service life of whole equipment.
Further improve is, wedge-shaped trench bottom is provided with adjustment cushion block；It is arranged in the outside of the wear-resisting briquetting
There are little particle wear-resistant coating, coating layer thickness 1mm-5mm, and coating layer thickness and short grained maximum gauge ratio is 0.7-1.5.
It, can be by wear-resisting briquetting and axle sleeve pressure by adjusting cushion block due to the gap of meeting between the wedge-shaped channel parts on wedge-shaped boss and axle sleeve
Tightly, guarantee working well for equipment；It is provided with little particle wear-resistant coating on the outside of wear-resisting briquetting, increases wearability, little particle is resistance to
Grind coating can be polymeric ceramic particle wear-resistant coating, coating other than with preferable wearability, corrosion resistance,
There are also stronger bonding dynamics.
It is wherein preferred, one end upper surface of each wear-resisting briquetting is provided with step surface, in the outside of step surface
It is provided with fixing device for installing, the fixing device for installing includes the arc-shaped briquetting of at least two, each arc-shaped briquetting head and the tail phase
Company is pressed on the step surface of wear-resisting briquetting, is connected by fixed plate with fixing bolt between arc-shaped briquetting.Step surface is circular arc
Fixing device for installing is arranged in shape on the outside of step surface, and such fixing device for installing will not influence the work operating of wear-resisting briquetting, and
And radial fixation is more even closer than axial restraint, fixed effect is more preferable, and the step of wear-resisting briquetting is pressed in using arc-shaped briquetting
On the outside of face, fixing bolt and fixed plate are devised in the junction of arc-shaped briquetting, fixed structure is stablized, convenient for assembly and disassembly, maintenance
It is convenient.
For the fastening performance for increasing fixing device for installing, the step surface of each wear-resisting briquetting is disposed as inclined surface, by resistance to
Mill briquetting end face inwardly gradually tilt, tilt angle be 5 ° -10 °, the lower surface of arc-shaped briquetting be also configured as with it is wear-resistant
The compatible inclined surface in the inclined surface of block.The lower surface of step surface and arc-shaped briquetting is obliquely installed mutual cooperation, so that solid
Fixed structure is reasonable, is conducive to the fixed tightening of entire fixing device for installing, and wear-resisting briquetting is inwardly compressed, and avoids pine
Dissipate play.In addition, the length of the wedge groove is less than the length of axle sleeve, it is arranged in the other end end of each wear-resisting briquetting
There is clamping bump, the corresponding position of axle sleeve is provided with clamping groove.The other end setting clamping bump and axis of wear-resisting briquetting
Clamping groove is adapted on set, and the other end of wear-resisting briquetting is effectively fixed, prevents play and inclination.
A kind of pressure roller of roll squeezer of the invention is related to the pressure roller of the roll squeezer for grinding or crushing, including this pressure
The roll-in structure of roller, wear-resisting briquetting uses, wears up to when needing replacing, it is only necessary to the fixing bolt on arc-shaped briquetting is unclamped,
Fixed plate is removed, the wear-resisting briquetting needed replacing is extracted out from side, replaces with new wear-resisting briquetting, the maintenance just completed.Axle sleeve
On wedge-shaped groove shape be all shapes that can think corresponding matching such as round, rectangular, prismatic or swallow-tail form, wherein wear-resistant
Block also sets at least to 2, and after wear-resisting briquetting is by the installation positioning of arc-shaped briquetting, fixed plate is fixed on circular arc by fixing bolt
On the connector of shape briquetting, so that fixed wear-resisting briquetting prevents axial float.
It is an advantage of the invention that；
1, easy to maintenance: only need complete to replace once, two hours (before replace and at least need 24 hours or more
It is more).
2, maintenance cost is low: originally axle sleeve abrasion after, build-up wear-resistant material is usually used and is repaired again, maintenance cost with
Labour cost is very high, even replacement vulnerable part now, expense are also few more.
Detailed description of the invention
Fig. 1 is the main view of the prior art；
Fig. 2 is the left view of the prior art；
Fig. 3 is main view of the invention；
Fig. 4 is left view of the invention；
Fig. 5 is the partial enlarged view of wedge-shaped boss and wedge groove assembly of the invention；
Fig. 6 is the partial enlarged view of Fig. 4；
Fig. 7 is the structural schematic diagram of wear-resistant block of the present invention；
Wherein, 1- main shaft, 2- axle sleeve, the wear-resisting briquetting of 3-, 4- wedge shape boss, 5- wedge groove, 6- adjust cushion block, 7- step
Face, the arc-shaped briquetting of 8-, 9- fixed plate, 10- fixing bolt, 11- clamping bump, 12- clamping groove.
Specific embodiment
The optimal technical scheme that the invention will now be described in detail with reference to the accompanying drawings.
As shown, a kind of pressure roller of roll squeezer of the invention, including main shaft 1 and covers the axle sleeve 2 on the main shaft 1,
It is symmetrically arranged with the wear-resisting briquetting 3 of a circle in the outer surface of axle sleeve 2, the wear-resisting briquetting 3 is set as strip, is arranged closely in side by side
2 outer surface of axle sleeve is provided with wedge-shaped boss 4 in the lower section of each wear-resisting briquetting 3, is arranged in the corresponding position of axle sleeve 2
There is the compatible wedge groove 5 of shape, 5 bottom of wedge groove is provided with adjustment cushion block 6；It is arranged in the outside of the wear-resisting briquetting 3
There are little particle wear-resistant coating, coating layer thickness 1mm-5mm, and coating layer thickness and short grained maximum gauge ratio is 0.7-1.5.
Wherein, one end upper surface of each wear-resisting briquetting 3 is provided with step surface 7, is arranged in the outside of step surface 7
There is fixing device for installing, the fixing device for installing includes the arc-shaped briquetting 8 of at least two, and each arc-shaped briquetting 8 joins end to end
It is pressed on the step surface 7 of wear-resisting briquetting 3, is connected between arc-shaped briquetting 8 by fixed plate 9 and fixing bolt 10.
For the fastening performance for increasing fixing device for installing, the step surface 7 of each wear-resisting briquetting 3 is disposed as inclined surface, by
The end face of wear-resisting briquetting 3 inwardly gradually tilts, tilt angle be 5 ° -10 °, the lower surface of arc-shaped briquetting 8 be also configured as with it is resistance to
Grind the compatible inclined surface in inclined surface of briquetting 3.
In addition, the length of the wedge groove 5 is less than the length of axle sleeve 2, in the other end end of each wear-resisting briquetting 3
It is provided with clamping bump 11, the corresponding position of axle sleeve 2 is provided with clamping groove 12；Or in each wear-resisting briquetting 3
Other end upper surface be also equipped with step surface 7, the outside of step surface 7 is provided with fixing device for installing.
A kind of pressure roller of roll squeezer of the invention, is arranged dismountable wear-resisting briquetting on the outside of axle sleeve, and wear-resisting briquetting passes through
In wedge groove on wedge-shaped boss insertion axle sleeve, after wear-resisting briquetting is using abrasion, repair and replacement are convenient, no replacement is required entire axis
Set, reduces maintenance cost, extends the service life of whole equipment while improving efficiency.
It, can be by wear-resisting briquetting by adjusting cushion block due to the gap of meeting between the wedge-shaped channel parts on wedge-shaped boss and axle sleeve
It is compressed with axle sleeve, guarantees working well for equipment；It is provided with little particle wear-resistant coating on the outside of wear-resisting briquetting, increases wearability,
Little particle wear-resistant coating can be polymeric ceramic particle wear-resistant coating, and coating is in addition to preferable wearability, resistance to
Outside corrosivity, there are also stronger bonding dynamics.
Step surface be it is arc-shaped, fixing device for installing is set on the outside of step surface, and such fixing device for installing will not influence
The work of wear-resisting briquetting operates, and radial fixation is more even closer than axial restraint, and fixed effect is more preferable, utilizes arc-shaped pressure
Block is pressed on the outside of the step surface of wear-resisting briquetting, devises fixing bolt and fixed plate, fixed knot in the junction of arc-shaped briquetting
Structure is stablized, easy to maintenance convenient for assembly and disassembly.
The lower surface of step surface and arc-shaped briquetting is obliquely installed mutual cooperation, so that fixed structure reasonable stress, favorably
In the fixed tightening of entire fixing device for installing, and wear-resisting briquetting is inwardly compressed, avoids loose play.
Clamping groove adaptation in the other end setting clamping bump and axle sleeve of wear-resisting briquetting, by the other end of wear-resisting briquetting
It is effectively fixed, prevent play and inclination.
A kind of pressure roller of roll squeezer of the invention, wear-resisting briquetting uses, wears up to when needing replacing, it is only necessary to unclamp circular arc
Fixing bolt on shape briquetting, removes fixed plate, extracts the wear-resisting briquetting that needs replacing out from side, replaces with new wear-resistant
Block, the maintenance just completed.Wedge-shaped groove shape on axle sleeve, which is that round, rectangular, prismatic or swallow-tail form etc. are all, can want to correspond to
The shape of cooperation, wherein wear-resisting briquetting also sets at least to 2, after wear-resisting briquetting is by the installation positioning of arc-shaped briquetting, by fixing
Fixed plate is fixed on the connector of arc-shaped briquetting by bolt, so that fixed wear-resisting briquetting prevents axial float.
It is an advantage of the invention that；
1, easy to maintenance: only need complete to replace once, two hours (before replace and at least need 24 hours or more
It is more).
2, maintenance cost is low: originally axle sleeve abrasion after, build-up wear-resistant material is usually used and is repaired again, maintenance cost with
Labour cost is very high, even replacement vulnerable part now, expense are also few more.
Claims (4)
1. a kind of pressure roller of roll squeezer, it is characterised in that: including main shaft and the axle sleeve on the main shaft is covered, in the appearance of axle sleeve
Face is symmetrically arranged with the wear-resisting briquetting of a circle, and the wear-resisting briquetting is set as strip, sleeve outer surface is arranged closely in side by side, every
It is provided with wedge-shaped boss below a wear-resisting briquetting, the corresponding position of axle sleeve is provided with the compatible wedge shape of shape
Slot is provided with step surface in one end upper surface of each wear-resisting briquetting, and the fixed dress of installation is provided on the outside of step surface
It sets, the fixing device for installing includes the arc-shaped briquetting of at least two, and each arc-shaped briquetting, which joins end to end, is pressed in wear-resisting briquetting
On step surface, connected by fixed plate with fixing bolt between arc-shaped briquetting, the step surface of each wear-resisting briquetting is disposed as
Inclined surface is inwardly gradually tilted by the end face of wear-resisting briquetting, and tilt angle is 5 ° -10 °, and the lower surface of arc-shaped briquetting is also provided with
For inclined surface compatible with the inclined surface of wear-resisting briquetting.
2. a kind of pressure roller of roll squeezer as described in claim 1, it is characterised in that: wedge-shaped trench bottom is provided with adjusting pad
Block.
3. a kind of pressure roller of roll squeezer as described in claim 1, it is characterised in that: be provided on the outside of the wear-resisting briquetting
Little particle wear-resistant coating, coating layer thickness 1mm-5mm, and coating layer thickness and short grained maximum gauge ratio are 0.7-1.5.
4. a kind of pressure roller of roll squeezer as described in claims 1 or 2 or 3, it is characterised in that: the length of the wedge groove is less than
The length of axle sleeve is provided with clamping bump in the other end end of each wear-resisting briquetting, sets in the corresponding position of axle sleeve
It is equipped with clamping groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735580.8A CN106111254B (en) | 2016-08-26 | 2016-08-26 | A kind of pressure roller of roll squeezer |
| PCT/CN2017/082983 WO2018036195A1 (en) | 2016-08-26 | 2017-05-04 | Roller press utilized in roller press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735580.8A CN106111254B (en) | 2016-08-26 | 2016-08-26 | A kind of pressure roller of roll squeezer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106111254A CN106111254A (en) | 2016-11-16 |
| CN106111254B true CN106111254B (en) | 2019-07-05 |
Family
ID=57275564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610735580.8A Active CN106111254B (en) | 2016-08-26 | 2016-08-26 | A kind of pressure roller of roll squeezer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106111254B (en) |
| WO (1) | WO2018036195A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111254B (en) * | 2016-08-26 | 2019-07-05 | 江苏新业重工股份有限公司 | A kind of pressure roller of roll squeezer |
| CN109744861A (en) * | 2017-11-02 | 2019-05-14 | 佛山市顺德区美的电热电器制造有限公司 | Pressure-detecting device for cooking apparatus and the cooking apparatus with it |
| CN108525931B (en) * | 2018-05-17 | 2020-11-13 | 惠州市瑞丰研磨材料有限公司 | Sanding device for producing flannelette sand paper through sand paper and working method of gluing device |
| CN111570013B (en) * | 2020-05-28 | 2022-05-24 | 中钢天源股份有限公司 | Roller structure of roller press embedded with hard alloy stud |
| CN115254312A (en) * | 2022-06-20 | 2022-11-01 | 华能国际电力股份有限公司营口电厂 | Medium speed pulverizer grinding roller cover with metal ceramic complex |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201482513U (en) * | 2009-05-21 | 2010-05-26 | 李寿海 | Tooth plate of crushing machine with novel structure |
| CN202277855U (en) * | 2011-10-28 | 2012-06-20 | 绵阳金鼎机电技术有限公司 | Novel high-precision quick detachable wear-resistant tooth roller of crushing machine |
| TW201306943A (en) * | 2011-02-23 | 2013-02-16 | Smidth As F L | Crushing roller |
| CN103191802A (en) * | 2013-04-26 | 2013-07-10 | 四川皇龙智能破碎技术股份有限公司 | Crusher tooth roller capable of rapidly mounting and dismounting toothed plate |
| SE1351237A1 (en) * | 2013-10-18 | 2013-10-28 | Metso Minerals Sweden Ab | Roller divided into segments equipped with pins and / or flanges |
| CN105126959A (en) * | 2015-08-28 | 2015-12-09 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of detachable ceramic alloy composite grinding roller |
| CN205056098U (en) * | 2015-09-29 | 2016-03-02 | 重庆罗曼新材料科技有限公司 | Can change abrasion part's vertical toper wear -resistant roller of combination |
| CN205965994U (en) * | 2016-08-26 | 2017-02-22 | 江苏新业重工股份有限公司 | Compression roller of roll squeezer |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059104U (en) * | 1989-12-30 | 1990-07-11 | 中南工业大学 | Crushing roll with several crushing plate |
| JP4495282B2 (en) * | 1999-11-01 | 2010-06-30 | 株式会社日清製粉グループ本社 | Mechanical crusher |
| CN2577951Y (en) * | 2002-09-25 | 2003-10-08 | 张店钢铁总厂 | Assembled cracking rolls |
| CN2636984Y (en) * | 2003-07-14 | 2004-09-01 | 崔丽蓉 | Crusher roller drum |
| DE102007006908A1 (en) * | 2007-02-13 | 2008-08-14 | Cht R. Beitlich Gmbh | Catalyzed peroxide bleaching ("catalyst bleaching") |
| DE102007007276B4 (en) * | 2007-02-14 | 2019-12-05 | Khd Humboldt Wedag Gmbh | Armoring of the surfaces of roller press rolls |
| US8308096B2 (en) * | 2009-07-14 | 2012-11-13 | TDY Industries, LLC | Reinforced roll and method of making same |
| WO2015015507A1 (en) * | 2013-07-30 | 2015-02-05 | Balaji Industrial Products Ltd., | A grinding roller for vertical roller mill and method of manufacturing the same |
| CN204082807U (en) * | 2014-09-12 | 2015-01-07 | 新昌县楷翔机电有限公司 | A kind of structure improved anchor ear |
| CN205797326U (en) * | 2016-07-19 | 2016-12-14 | 江苏新业重工股份有限公司 | A kind of roll squeezer pressure roller |
| CN106111254B (en) * | 2016-08-26 | 2019-07-05 | 江苏新业重工股份有限公司 | A kind of pressure roller of roll squeezer |
-
2016
- 2016-08-26 CN CN201610735580.8A patent/CN106111254B/en active Active
-
2017
- 2017-05-04 WO PCT/CN2017/082983 patent/WO2018036195A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201482513U (en) * | 2009-05-21 | 2010-05-26 | 李寿海 | Tooth plate of crushing machine with novel structure |
| TW201306943A (en) * | 2011-02-23 | 2013-02-16 | Smidth As F L | Crushing roller |
| CN202277855U (en) * | 2011-10-28 | 2012-06-20 | 绵阳金鼎机电技术有限公司 | Novel high-precision quick detachable wear-resistant tooth roller of crushing machine |
| CN103191802A (en) * | 2013-04-26 | 2013-07-10 | 四川皇龙智能破碎技术股份有限公司 | Crusher tooth roller capable of rapidly mounting and dismounting toothed plate |
| SE1351237A1 (en) * | 2013-10-18 | 2013-10-28 | Metso Minerals Sweden Ab | Roller divided into segments equipped with pins and / or flanges |
| CN105126959A (en) * | 2015-08-28 | 2015-12-09 | 南通高欣耐磨科技股份有限公司 | Manufacturing method of detachable ceramic alloy composite grinding roller |
| CN205056098U (en) * | 2015-09-29 | 2016-03-02 | 重庆罗曼新材料科技有限公司 | Can change abrasion part's vertical toper wear -resistant roller of combination |
| CN205965994U (en) * | 2016-08-26 | 2017-02-22 | 江苏新业重工股份有限公司 | Compression roller of roll squeezer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106111254A (en) | 2016-11-16 |
| WO2018036195A1 (en) | 2018-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106111254B (en) | A kind of pressure roller of roll squeezer | |
| CA2476153C (en) | Grinding roll | |
| RU2358806C2 (en) | Grinding roll for powdering granular materials | |
| DK2825315T3 (en) | Press roller for a roller press | |
| CN104668058B (en) | A kind of New type ball mill lining plate and its liner plate installation method | |
| US20140158801A1 (en) | Crushing roller | |
| AU2015296352A1 (en) | Roller and pressing apparatus thereof | |
| AU2013203809B2 (en) | Roll for a roller grinder, and a roller grinder comprising such a roll | |
| CA2866949C (en) | Press roller for a roller press | |
| CN205965994U (en) | Compression roller of roll squeezer | |
| CN110805696B (en) | Super wear-resistant floating seal ring and machining method and device thereof | |
| CN106573246B (en) | Roller with segmented wear surface for grinding particulate material | |
| CN208356901U (en) | A kind of roller of high-pressure roller mill | |
| CN115501942B (en) | Grinding roller and grinding assembly comprising same | |
| CN108579887B (en) | Roller press roller assembly structure of non-ridgeline block roller surface | |
| CN205797326U (en) | A kind of roll squeezer pressure roller | |
| CN201586533U (en) | Abrasion-resistant lateral baffle plate | |
| CN218107829U (en) | Adjustable wear-resistant lining plate of single-roll crusher | |
| CN213102491U (en) | Bimetal wear-resistant composite lining plate of ball mill | |
| CN217667787U (en) | Ceramic guide rail for machine tool | |
| CN2928234Y (en) | Combined roller embedded with alloy column integrated roller surface | |
| CN214717169U (en) | Novel silicon nitride ball mill lining plate | |
| CN217568933U (en) | Roller shaft combined type roller press | |
| CN219024488U (en) | Hammer for crusher, hammer for pulverizer and crusher | |
| CN210729705U (en) | Plate hammer mounting structure of hammer type sand making machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |