CN105970786A - Automatic control cutter with overload protection function - Google Patents
Automatic control cutter with overload protection function Download PDFInfo
- Publication number
- CN105970786A CN105970786A CN201610521196.8A CN201610521196A CN105970786A CN 105970786 A CN105970786 A CN 105970786A CN 201610521196 A CN201610521196 A CN 201610521196A CN 105970786 A CN105970786 A CN 105970786A
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- China
- Prior art keywords
- rotating shaft
- frame
- overload protection
- axle sleeve
- cutting machine
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 abstract 1
- 230000006378 damage Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices 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
- E01C23/0906—Devices 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
Abstract
The invention discloses an automatic control cutter with an overload protection function. The problems of incapability of a cutter in complete cutting of concrete, no overload protection function of the cutter and the like are effectively solved. The automatic control cutter comprises a rack, and is characterized in that a bottom plate is hinged to the lower end of the rack, wherein electric pushrods are connected between the bottom plate and the rack; a first fixed frame and a second fixed frame are fixedly arranged on the inner lower part of the rack; a rotating shaft is arranged in the first and second fixed frames in a penetration manner; a mounting section of the which the diameter is smaller than that of the rotating shaft is arranged on the middle section of the rotating shaft; a shaft sleeve is arranged on the mounting section in a sleeving manner; a chain wheel is fixedly arranged outside the shaft sleeve, and is connected with an engine through a chain; a reset spring pressed against one end of the shaft sleeve is connected to the rotating shaft in the sleeving manner; a first groove is formed in the other end of the shaft sleeve; a steel ball is connected in the first groove through a spring; a second groove capable of accommodating the steel ball is formed in the rotating shaft. The automatic control cutter is simple and reasonable in structure, a cut road can be completely separated from an earth foundation to avoid secondary construction, and overload protection is added at the same time of cutting to prevent a cutting disk from being stressed, deformed and damaged.
Description
Technical field
The present invention relates to building, road construction equipment technical field, particularly relate to a kind of automatically control cutting machine with overload protection.
Background technology
Along with the development of communication, in road construction, concrete road has obtained building energetically, but the breakage of concrete road is quite serious, and road to be keeped in repair by highway administration department.Generally being divided into a fritter to mix earth on damaged road surface with jump bit, the most again pour into a mould new concrete, this method for maintaining is harder, splits uneven, and efficiency is low；Also have a kind of cutting machine that the regulation screw mandrel of depth of cut is set at frame rear portion, but the bad assurance of the degree of depth, and each degree of depth presets, and next time cuts the different degree of depth and need to reset, the most convenient.But the degree of depth of road exists deep mixed situation, use the degree of depth set in advance to cross and cut, it is also possible to can't cut concrete so that the later stage is more difficult makes concrete separate with soil matrix, even needs secondary cut, wastes time and energy.
nullIn the patent of invention of Application No. 201010502977.5，Disclose a kind of road cutting machine，Including frame、Base、Control station、Cutting sheet、Road wheel and electromotor，Road wheel is fixed by live axle bottom described frame，Described control station two ends connect with handles，Described cutting sheet periphery is provided with guard shield，Described frame side is provided with adjusting means，Described adjusting means includes gear level、It is manually advanced dish、Drive link and way block，Described drive link top is socketed with cone tooth，Described cone tooth is connected with being manually advanced inside dish，Described drive link bottom is connected with way block by guide rail bearing，Described way block is fixed in frame，Connect bottom described drive link and have worm screw，Described worm screw is meshed with turbine，Described Cover For A Turbine is connected on live axle，Described base is provided with electric pushrod，It is connected with drive shaft bottom described electric pushrod，Described drive shaft two ends are provided with driving wheel，Described drive shaft is connected by support with live axle.
There is following defect in this patent: 1) energy-conservation changes into being manually advanced by advancement mechanism in use, when road cuts, operator also need to hand rotation advance dish while noting road surface cutting situation, requirement to operator is higher, is a kind of burden to operator itself；2) cutting sheet is upper and lower by electric pushrod control, but electric pushrod is unpredictable to depth of cut, and its essence is still by the degree of depth being manually set；3) there is no overload protective device, when the object that cutting sheet unexpected cutter hardness is bigger, be easily damaged cutting sheet, the even fracture of cutting sheet and cause injury to personnel.
Summary of the invention
For above-mentioned situation; for overcoming the defect of prior art; the purpose of the present invention is just to provide and a kind of automatically controls cutting machine with overload protection; effectively solve the degree of depth that cutting machine is manually set in cutting process to cause passing by and cut, cut completely and cutting machine is not equipped with the problems such as overload protection; the engineering time can be saved, accelerating construction progress, reduces the technology requirement of operator; operator and cutting machine itself are protected so that it is have more generalization.
nullIts technical scheme solved is，The present invention includes frame，Handle，Front-wheel，Trailing wheel，Cutting sheet，Oil cylinder、Accumulator and electromotor，It is characterized in that，Frame lower end is hinged with base plate，It is connected between base plate with frame and has electric pushrod，Constitute the structure of angle between electric pushrod regulating base board and frame，Oil cylinder、Accumulator and electromotor are arranged on upside in frame，In frame, lower section is fixed with the first fixed mount and the second fixed mount，It is equipped with rotating shaft in first fixed mount and the second fixed mount，Rotating shaft stage casing is provided with the diameter construction section less than rotating shaft，Axle sleeve it is cased with on construction section，Axle sleeve extenal fixation has sprocket wheel，Sprocket wheel connects electromotor through chain，Constitute the structure that driven by engine axle sleeve rotates，The back-moving spring withstanding axle sleeve one end it is socketed with in rotating shaft，Constituting back-moving spring makes axle sleeve withstand the structure of rotating shaft，The axle sleeve other end offers the first groove，Connect through spring in first groove and have steel ball，The second groove that can accommodate steel ball is offered in rotating shaft，The structure that composition axle sleeve and rotating shaft rotate simultaneously，Rotating shaft be fixed with relative distance-sensor on axle sleeve，Roller end is provided with cutting sheet，On the upside of frame, rear is provided with control chamber.
Present configuration advantages of simple; the up and down motion of cutting sheet can be controlled while cutting; ensure that the road of cutting can separate with soil matrix completely; secondary is avoided to construct; overload protection is added while cutting; can play a protective role when cutting the sudden change of sheet stress, prevent cutting sheet stress deformation and damage.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the enlarged drawing of A in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in further detail.
nullBe given by Fig. 1 to Fig. 3，The present invention includes frame 1，Handle 8，Front-wheel 4，Trailing wheel 24，Cutting sheet 13，Oil cylinder 6、Accumulator 27 and electromotor 5，It is characterized in that，Frame 1 lower end is hinged with base plate 2，It is connected between base plate 2 with frame 1 and has electric pushrod 3，Constitute the structure of angle between electric pushrod 3 regulating base board 2 and frame 1，Oil cylinder 6、Accumulator 27 and electromotor 5 are arranged on upside in frame 1，In frame 1, lower section is fixed with the first fixed mount 11 and the second fixed mount 10，It is equipped with rotating shaft 12 in first fixed mount 11 and the second fixed mount 10，Rotating shaft 12 stage casing is provided with the diameter construction section 21 less than rotating shaft 12，Axle sleeve 15 it is cased with on construction section 21，Axle sleeve 15 extenal fixation has sprocket wheel 14，Sprocket wheel 14 connects electromotor 6 through chain 7，Constitute the structure that electromotor 6 drives axle sleeve 15 to rotate，The back-moving spring 22 withstanding axle sleeve 15 one end it is socketed with in rotating shaft 12，Constituting back-moving spring 22 makes axle sleeve 15 withstand the structure of rotating shaft 12，Axle sleeve 15 other end offers the first groove 18，Connect through spring 19 in first groove 18 and have steel ball 17，The second groove 16 that can accommodate steel ball 17 is offered in rotating shaft 12，The structure that composition axle sleeve 15 and rotating shaft 12 rotate simultaneously，Rotating shaft 12 be fixed with relative distance-sensor 20 on axle sleeve 15，Rotating shaft 12 end is provided with cutting sheet 13，On the upside of frame 1, rear is provided with control chamber 23.
Described base plate 2 both sides are provided with front-wheel 4.
Described frame 1 side is fixed with protective cover 9.
Described electric pushrod 3 controls through control chamber 23, and the control of electric pushrod 3 has manually and automatically two ways.
Described distance-sensor 20 connects control chamber 23.
Described handle 8 is arranged on above frame 1 position rearward.
The described trailing wheel 24 motor 25 in belt 26 is fastened on frame 1, constituting motor 25 provides the structure of trailing wheel 24 onward impulse.
Described electric pushrod 3 and motor 25 connect accumulator 27, and constitute accumulator 27 provides the structure of the energy for electric pushrod 3 and motor 25.
The present invention in use,
On the road surface moving to the present invention to need to carry out cutting, the length of electric pushrod 3 is regulated by the manual gear of control chamber 23, thus adjust the cutting sheet 13 distance apart from ground, after the position adjustments of cutting sheet 13, the regulatory function of electric pushrod 3 is switched to automatic catch position, and the equipment road pavement of opening is cut.
When cutting sheet 13 cuts in concrete layer, the thing hardness cut to due to cutting sheet 13 is different, the power producing cutting sheet 13 is the most different, moment of torsion in rotating shaft 12 is changed the most therewith, according to the situation on cutting road surface, selecting corresponding back-moving spring 22 in advance, back-moving spring 22 makes axle sleeve 15 can withstand rotating shaft 12, steel ball 17 between rotating shaft 12 and axle sleeve 15 makes rotating shaft 12 and axle sleeve 15 connect as one, so that rotating shaft 12 rotates together with axle sleeve 15.Owing to the moment of torsion in rotating shaft 12 is constantly changing, so the axial force produced on steel ball 17 likely can be more than the elastic force of back-moving spring 22, so that be separated a distance between axle sleeve 15 and rotating shaft 12, the distance-sensor 20 of correspondence it is fixed with in rotating shaft 12 and axle sleeve 15, can the distance between rotating shaft 12 and axle sleeve 15 be changed feeds back in control chamber 23, the range information obtained according to feedback, calculate the torque in rotating shaft 12, and then determine the cutting situation of cutting sheet 13, then actuating signal is passed to electric pushrod 3, thus regulate the height of cutting sheet 13.So cutting sheet 13 can by concrete layer cutting completely when cutting, concrete and soil matrix are completely separated, thus the most quick when repairing road surface, it is not necessary to carry out the benefit of secondary and cut concrete road surface can be made can to depart from soil matrix completely, save time and manpower.
Steel ball 17 is used to connect when axle sleeve 15 and rotating shaft 12 connect, non-rigid connection, when the power cut on sheet 13 drastically changes, the axial force of the steel ball that axle sleeve 15 is subject to increases, and the distance between axle sleeve 15 and rotating shaft 12 increases, and steel ball 17 is deviate from the second groove 16 along with the rotation of axle sleeve 15, when turning to next second groove 16, back-moving spring 22 promotes axle sleeve 15, by steel ball 17 fight back the second groove 16, so that axle sleeve 15 and rotating shaft 12 reconnect.The power of sudden change can be processed by this structure, reduces the damage of rotating shaft 12, and does not destroys the structure of rotating shaft 12, it is possible to is continuing with.
The present invention compared with prior art, has the advantages that 1) rotating shaft uses rotating shaft to add the structure of axle sleeve, changes being rigidly connected originally so that after rotating shaft can process sudden change power and process, rotating shaft remains able to rotate, and does not damage the structure of rotating shaft；2) rotating shaft adds the structure of axle sleeve can be that displacement information passes to control system by the stress check calculation on cutting sheet, thus analyzes cutting sheet cutting situation under road surface, and is adjusted by electric pushrod so that cutting is more thorough, improves work efficiency.
Present configuration advantages of simple; the up and down motion of cutting sheet can be controlled while cutting; ensure that the road of cutting can separate with soil matrix completely; secondary is avoided to construct; overload protection is added while cutting; can play a protective role when cutting the sudden change of sheet stress, prevent cutting sheet stress deformation and damage.
Claims (8)
- null1. one kind automatically controls cutting machine with overload protection，Including frame (1)，Handle (8)，Front-wheel (4)，Trailing wheel (24)，Cutting sheet (13)，Oil cylinder (6)、Accumulator (27) and electromotor (5)，It is characterized in that，Frame (1) lower end is hinged with base plate (2)，It is connected between base plate (2) with frame (1) and has electric pushrod (3)，Constitute the structure of angle between electric pushrod (3) regulating base board (2) and frame (1)，Oil cylinder (6)、Accumulator (27) and electromotor (5) are arranged on upside in frame (1)，In frame (1), lower section is fixed with the first fixed mount (11) and the second fixed mount (10)，It is equipped with rotating shaft (12) in first fixed mount (11) and the second fixed mount (10)，Rotating shaft (12) stage casing is provided with the diameter construction section (21) less than rotating shaft (12)，Axle sleeve (15) it is cased with on construction section (21)，Axle sleeve (15) extenal fixation has sprocket wheel (14)，Sprocket wheel (14) connects electromotor (6) through chain (7)，Constitute the structure that electromotor (6) drives axle sleeve (15) to rotate，The back-moving spring (22) withstanding axle sleeve (15) one end it is socketed with in rotating shaft (12)，Constitute back-moving spring (22) make axle sleeve (15) withstand rotating shaft 12) structure，Axle sleeve (15) other end offers the first groove (18)，Connect through spring (19) in first groove (18) and have steel ball (17)，The second groove (16) that can accommodate steel ball (17) is offered in rotating shaft (12)，The structure that composition axle sleeve (15) and rotating shaft (12) rotate simultaneously，Rotating shaft (12) be fixed with relative distance-sensor (20) on axle sleeve (15)，Rotating shaft (12) end is provided with cutting sheet (13)，Rear, frame (1) upside is provided with control chamber (23).
- The most according to claim 1 automatically control cutting machine with overload protection, it is characterised in that described base plate (2) both sides are provided with front-wheel (4).
- The most according to claim 1 automatically control cutting machine with overload protection, it is characterised in that described frame (1) side is fixed with protective cover (9).
- The most according to claim 1 automatically control cutting machine with overload protection, it is characterised in that described electric pushrod (3) controls through control chamber (23), and the control of electric pushrod (3) has manually and automatically two ways.
- The most according to claim 1 automatically control cutting machine with overload protection, it is characterised in that described distance-sensor (20) connects control chamber (23).
- The most according to claim 1 automatically control cutting machine with overload protection, it is characterised in that described handle (8) is arranged on position rearward, frame (1) top.
- The most according to claim 1 automatically control cutting machine with overload protection; it is characterized in that; the described trailing wheel (24) motor (25) in belt (26) is fastened on frame (1), constituting motor (25) provides the structure of trailing wheel (24) onward impulse.
- The most according to claim 7 automatically control cutting machine with overload protection; it is characterized in that; described electric pushrod (3) and motor (25) connect accumulator (27), and constituting accumulator (27) is the structure that electric pushrod (3) and motor (25) provide the energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521196.8A CN105970786B (en) | 2016-07-05 | 2016-07-05 | Carry overload protection automatically controls cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521196.8A CN105970786B (en) | 2016-07-05 | 2016-07-05 | Carry overload protection automatically controls cutting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105970786A true CN105970786A (en) | 2016-09-28 |
| CN105970786B CN105970786B (en) | 2017-03-15 |
Family
ID=56953742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610521196.8A Expired - Fee Related CN105970786B (en) | 2016-07-05 | 2016-07-05 | Carry overload protection automatically controls cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105970786B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095704A (en) * | 2020-09-09 | 2020-12-18 | 施红 | Hobbing cutter drive adjustment and overload protection system for excavation |
| CN112411655A (en) * | 2020-10-27 | 2021-02-26 | 重庆宏工工程机械股份有限公司 | Self-repairing compound cement ditcher |
| CN112554014A (en) * | 2020-11-27 | 2021-03-26 | 于江波 | Linear cutting mechanism moving support for cement road construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452943A (en) * | 1991-07-26 | 1995-09-26 | Peter Campbell Pty Ltd | Concrete cutting machines |
| DE102004015062A1 (en) * | 2004-03-25 | 2005-10-20 | Ferdinand Koller & Sohn Gmbh & | Joint cutter comprises a steering unit arranged on the handle side of a chassis to lift the rear wheels of the cutter during movement into the steering position from the ground and/or front the running surface of the joint cutter |
| CN200967923Y (en) * | 2006-11-18 | 2007-10-31 | 郑敬炎 | Hand propelled power cutting machine |
| CN201241307Y (en) * | 2008-05-12 | 2009-05-20 | 徐州徐工筑路机械有限公司 | Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system |
| CN101967792A (en) * | 2010-09-30 | 2011-02-09 | 南通安捷机械有限公司 | Road cutting machine |
| CN102888810A (en) * | 2011-07-19 | 2013-01-23 | 比伯拉赫利勃海尔-部件股份有限公司 | Self-propelled surface milling cutter |
-
2016
- 2016-07-05 CN CN201610521196.8A patent/CN105970786B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5452943A (en) * | 1991-07-26 | 1995-09-26 | Peter Campbell Pty Ltd | Concrete cutting machines |
| DE102004015062A1 (en) * | 2004-03-25 | 2005-10-20 | Ferdinand Koller & Sohn Gmbh & | Joint cutter comprises a steering unit arranged on the handle side of a chassis to lift the rear wheels of the cutter during movement into the steering position from the ground and/or front the running surface of the joint cutter |
| CN200967923Y (en) * | 2006-11-18 | 2007-10-31 | 郑敬炎 | Hand propelled power cutting machine |
| CN201241307Y (en) * | 2008-05-12 | 2009-05-20 | 徐州徐工筑路机械有限公司 | Novel dynamic load buffer and overload protection mechanism of milling and planing wheel drive system |
| CN101967792A (en) * | 2010-09-30 | 2011-02-09 | 南通安捷机械有限公司 | Road cutting machine |
| CN102888810A (en) * | 2011-07-19 | 2013-01-23 | 比伯拉赫利勃海尔-部件股份有限公司 | Self-propelled surface milling cutter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112095704A (en) * | 2020-09-09 | 2020-12-18 | 施红 | Hobbing cutter drive adjustment and overload protection system for excavation |
| CN112411655A (en) * | 2020-10-27 | 2021-02-26 | 重庆宏工工程机械股份有限公司 | Self-repairing compound cement ditcher |
| CN112411655B (en) * | 2020-10-27 | 2022-04-01 | 重庆宏工工程机械股份有限公司 | Self-repairing compound cement ditcher |
| CN112554014A (en) * | 2020-11-27 | 2021-03-26 | 于江波 | Linear cutting mechanism moving support for cement road construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105970786B (en) | 2017-03-15 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191127 Address after: Room 201, No. 269 Jinsui Road, Xincang Town, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: JIAXING BAOLIAN ROBOT Co.,Ltd. Address before: 453400, Henan County, Xinxiang Province, Changyuan Province, Yang Zhen, Yang village, five groups Patentee before: Wang Zhusheng |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210729 Address after: 276100 no.3-1 tanma Road, Tancheng Economic Development Zone, Linyi City, Shandong Province Patentee after: Shandong Yimeng Tools Co.,Ltd. Address before: Room 201, 269 Jinsui Road, Xincang Town, Pinghu City, Jiaxing City, Zhejiang Province Patentee before: JIAXING BAOLIAN ROBOT Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Automatic control cutting machine with overload protection Effective date of registration: 20210817 Granted publication date: 20170315 Pledgee: Shandong Tancheng Rural Commercial Bank Co.,Ltd. Pledgor: Shandong Yimeng Tools Co.,Ltd. Registration number: Y2021980007817 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 |