CN108425178A - A kind of clear needle link mechanism of footwear machine - Google Patents
A kind of clear needle link mechanism of footwear machine Download PDFInfo
- Publication number
- CN108425178A CN108425178A CN201810115437.8A CN201810115437A CN108425178A CN 108425178 A CN108425178 A CN 108425178A CN 201810115437 A CN201810115437 A CN 201810115437A CN 108425178 A CN108425178 A CN 108425178A
- Authority
- CN
- China
- Prior art keywords
- clear needle
- needle
- clear
- control
- bearing
- 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
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/94—Driving-gear not otherwise provided for
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/20—Needle bars
- D04B15/22—Driving devices therefor
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/94—Driving-gear not otherwise provided for
- D04B15/99—Driving-gear not otherwise provided for electrically controlled
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
- Knitting Machines (AREA)
Abstract
The present invention provides a kind of clear needle link mechanisms of footwear machine, belong to footwear machine field, equipped with clear needle connecting rod, clear needle control block, degree mesh adjusting block and clear needle control lever, the both ends of clear needle connecting rod movably connect to form revolute pair with clear needle driving lever, clear needle control block respectively, and the clear needle control block other end is arranged with clear needle control lever one end clearance fit;Spending mesh adjusting block one end, also the splaying is equipped with clear needle control lever;The clear needle control lever is formed by connecting by 2 branch rod bearings.The other end of the clear needle control lever, clear needle driving lever middle part rotatably pinpoint on bottom plate or holder.Bearing and a bearing control bar clearance fit, the bearing control bar are driven and are moved reciprocatingly by a stepper motor, and reciprocating motion same as the bearing of bearing control bar clearance fit is to realize needle, the action of clear needle.The present invention replaces conventional electromagnets type of drive using the structure that mechanical linkage is used in combination with stepper motor, and it is inconvenient caused by solenoid actuated to avoid, and mechanical structure is stable, stable, service life is long.
Description
Technical field
The invention belongs to footwear machine field, specifically a kind of clear needle link mechanism of footwear machine.
Background technology
In existing footwear machine head knitting member, it is typically provided needle driving lever, clear needle driving lever and crochet needle and links, and
Needle driving lever and clear needle driving lever are driven equipped with electromagnet.Solenoid actuated needs electric wire to connect power supply, in actual production process
In, it is susceptible to the case where electromagnet connection electric wire is broken, seriously affects the normal work of footwear machine.Meanwhile electromagnet can only
It is enough controlled by switching electricity, control is more coarse.Also, electromagnetic actuation needs the regular hour with reset, causes
The braiding speed of crochet needle is restricted.In addition, electromagnet is easy to be influenced and break down by electric current, magnetic field, it is electric when serious
Magnet can not work, and need additionally to replace electromagnet and clear out a gathering place to surrounding enviroment, and maintenance cost is high, maintenance difficulty is big.
Invention content
For overcome the deficiencies in the prior art, connected using the clear needle of footwear machine of mechanical linkage connection the present invention provides a kind of
Linkage, simple in structure, easy to assembly, stable structure can be effectively reduced using various failures caused by solenoid actuated, be carried
The stability and the speed of service of high footwear machine operation.
To achieve the above object, the clear needle link mechanism of footwear machine uses the skill similar with needle link mechanism in the present invention
Art scheme, it is specific as follows:Including clear needle driving lever, it is equipped with clear needle connecting rod, Islamic control block, degree mesh adjusting block and Islamic control-rod.
The both ends of clear needle connecting rod movably connect to form revolute pair with clear needle driving lever, clear needle control block respectively, the clear needle control block other end and
The clearance fit setting of clear needle control lever one end.Spending mesh adjusting block one end, also the splaying is equipped with clear needle control lever.It is described
Clear needle control lever is formed by connecting by 2 branch rod bearings, which is combined with a bearing control bar, and bearing control bar and one use
In the stepper motor connection that control bearing control-rod moves reciprocatingly.In the other end of the clear needle control lever, clear needle driving lever
Portion is rotatably pinpointed on bottom plate or holder.
Preferably, being connected with torsional spring between the shaft and the clear needle control lever end of the degree mesh adjusting block.
Preferably, it is interior arc angle to form the smaller side angle of angle between described two struts, other side angle is
Outer arc angle, bearing outer arc angle side and bearing control bar clearance fit in the same plane.
Preferably, being connected with tension spring between the shaft and the shaft of clear needle control block of degree mesh adjusting block.
Preferably, the bearing control bar shares the i.e. bearing control bar and needle connecting rod machine with needle link mechanism
The bearing control bar of structure can simultaneously be controlled by a stepper motor by bearing control bar for that can be the same bearing control bar
Needle link mechanism, clear needle link mechanism carry out needle action or the action of clear needle, needle link mechanism and clear needle link mechanism knot
Structure is similar, but function complements one another.
Beneficial effects of the present invention are as follows:One, the present invention, which is combined using link mechanism with stepper motor, replaces the prior art
Middle solenoid actuated mode, linkage arrangement is light and handy, small, and both easy to produce, assembling also significantly reduces head braiding
The weight of component entirety keeps the operation of head knitting member more flexible.Also, link mechanism generally mechanical structure, design
Accurately, structural stability is good, can reduce the failure problems caused by solenoid actuated, improves the operation stability of footwear machine.Even
The running speed and operating frequency of linkage compared to solenoid actuated mode faster, it is more stable, be conducive to improve footwear machine
Knit socks speed and efficiency.In addition, stepper motor stability is high with accuracy, convenient for control, the miniature of footwear machine maincenter can be passed through
Processing controller directly controls.
Two, clear needle control lever passes through time difference while degree of stirring mesh adjusting block in clear needle link mechanism provided by the present invention
With clear needle control block, mesh will be spent adjusts the driving structure that is acted with clear needle and be combined into one, it is the smart structural design, stable,
Simplify the operating procedure of knitting member and the size of knitting member.And structure is simplified, knitting member weight has been reduced, makes
Knitting member is more convenient for processing and be repaired, while also reducing production cost and maintenance maintenance expense, is conducive to improve warp
Ji benefit.
Description of the drawings
Fig. 1 is the overall structure diagram of the specific embodiment of the invention one.
Fig. 2 is the overall schematic of the specific embodiment of the invention two.
As shown in the figure:Needle driving lever 1, needle positioning end 1a, needle connecting rod 2, bottom plate 3, bearing control bar 4, needle control
It is bar 5, one 5a of strut, needle bearing 5b, two 5c of strut, clear needle control lever 6, three 6a of strut, clear needle bearing 6b, four 6c of strut, clear
Needle control block 7, torsional spring 8, degree mesh adjusting block 9, clear needle connecting rod 10, clear needle driving lever 11, clear needle positioning end 11a, needle limiting slot 12,
Clear needle limiting slot 13.
Specific implementation mode
As described in Figure 1, needle link mechanism and clear needle link mechanism, needle link mechanism packet are equipped in the present embodiment simultaneously
Needle driving lever 1, needle positioning end 1a, needle connecting rod 2, bottom plate 3, the needle for including bearing control bar 4 and being installed on bottom plate 3 control
Bar 5.1 adjacent one end of needle driving lever is equipped with limited post, and the bottom plate where the limited post, which is equipped with to coordinate with limited post, realizes short distance
It offs normal the needle limiting slot 12 of shifting, 1 other end of needle driving lever is movably connect with needle connecting rod by shaft or rotary column, needle driving lever
1 middle part corner is movably fixed on formation needle positioning end 1a, needle positioning end 1a on bottom plate 3 by a shaft or rotary column
The both ends of the movement needle rotating fulcrum of needle driving lever 1, needle driving lever 1 are rotated upwardly and downwardly using needle positioning end 1a as the center of circle.Needle
The other end of connecting rod 2 is movably connect with one end of needle control-rod 5, the connecting shaft institute that needle connecting rod 2 is connect with needle control-rod 5
It is equipped on the bottom plate of position and coordinates U-shaped corner slots, U-shaped corner slots that needle connecting rod 2 is made to be obtained with needle control-rod 5 with the connecting shaft
Tie point ensures the accuracy and controllability of needle connecting rod displacement according to the shape movement track of U-shaped corner slots.The present embodiment
In, needle control-rod 5 is composed of one 5a of strut, two 5c of strut, needle bearing 5b, and wherein one one end 5a of strut passes through needle
Bearing 5b is movably connect with two 5c of strut, mono- end bearings, and the other end of one 5a of strut is connect with needle connecting rod 2, and two 5c's of strut is another
One end is rotatably fixed on bottom plate 3.Above-mentioned is rotatably the rotational motion on horizontal plane.One 5a of strut, two 5c of strut it
Between there is angle, the small side of included angle to be interior arc angle, other side angle is outer arc angle, and outer arc angle is towards 3 outside setting of bottom plate
And it is arranged with 34 clearance fit of bearing control bar disposed in parallel of bottom plate.Bearing control bar 4 and one is for controlling bearing control
The stepper motor connection that bar 4 moves reciprocatingly, drives bearing control bar 4 to move up and down and make and bearing control when stepper motor works
The needle bearing 5b of 4 clearance fit of bar processed is correspondingly moved up or is moved down, and then makes one 5a of strut, strut two 5c action and further
Needle connecting rod 2 is driven to move, needle connecting rod 2 drives the movement of needle driving lever 1 to link with it to realize the action of needle driving lever.
Clear needle link mechanism includes bearing control bar 4 and the clear needle bearing 6b being installed on bottom plate 3, clear needle control lever 6, clear
Needle control block 7, clear needle connecting rod 10, clear needle driving lever 11.Clear 11 one end of needle driving lever is equipped with clear needle limited post, and clear needle limited post institute is in place
The bottom plate set is equipped with the clear needle limiting slot 13 being used cooperatively with clear needle limited post, the other end of clear needle driving lever 11 and clear needle connecting rod
10 are rotatably connected.The middle part corner of clear needle driving lever 11, which is movably fixed on by a shaft or rotary column on bottom plate 3, forms clear needle
Positioning end 11a, clear needle positioning end 11a are the movement needle rotating fulcrum of clear needle driving lever 11, and the both ends of clear needle driving lever 11 are with clear needle
Positioning end 11a rotates upwardly and downwardly for the center of circle.The other end of clear needle connecting rod 10 is rotatably connected with clear 7 one end of needle control block, clear needle control
7 other end of clamp dog is set to 6 lower section of clear needle control lever and is arranged with 6 clearance fit of clear needle control lever.The middle part of clear needle control block 7 is set
There are a shaft or rotary column to be rotatably fixed on bottom plate 3 and form rotating fulcrum, the both ends of clear needle control block 7 are using the fulcrum as prototype
It rotates upwardly and downwardly.Clear needle control lever 6 and one end of clear 7 clearance fit of needle control block are also set with degree 9 clearance fit of mesh adjusting block simultaneously
It sets, degree mesh adjusting block 9 is located above the end of clear needle control lever 6.Clear needle control lever 6 is by three 6a of strut, clear needle bearing 6b, strut four
6c is composed, wherein wherein three one end 6a of strut is movably connect by clear needle bearing 6b with four 6c of strut, mono- end bearings, strut
The other end of three 6a is connect with clear needle connecting rod 10, and the other end of four 6c of strut is rotatably fixed on bottom plate 3.In the present embodiment,
It is interior arc angle to have angle, the small side of included angle between three 6a of strut, four 6c of strut, and other side angle is outer arc angle, outside
Arc angle side is arranged towards 3 outside setting of bottom plate and with 34 clearance fit of bearing control bar disposed in parallel of bottom plate.Mesh is spent to adjust
It is connected with torsional spring between the shaft of block and the clear needle control lever end, spends between the shaft and the shaft of clear needle control block of mesh adjusting block
It is connected with tension spring.
Bearing control bar 4 is connect with one for controlling the stepper motor that bearing control-rod 4 moves reciprocatingly, stepper motor work
Top on bearing control bar 4 is moved it up when making, and is made with the clear needle bearing 6b of 4 clearance fit of bearing control bar correspondingly
It moves up.It acts so that three 6a of strut, four 6c of strut are moved up and makes to act degree of progress with the degree mesh adjusting block 9 of its clearance fit
Mesh is adjusted to coordinate the needle of needle link mechanism to act.Then step motor control bearing control bar 4 is far from clear needle bearing 6b,
Simultaneously torsional spring 8 elastic force effect under, four 6c of strut by downwards it is open-top, drive clear needle control block 7 and four 6c clearance fits of strut
One end move downward, the other end of clear needle control block 7 moves down and pulls down the clear needle connecting rod 10 to link with it, and clear needle connects
Bar 10 drives clear needle driving lever 11 movement to link with it to realize the action of needle driving lever.Clear needle connecting rod under the action of tension spring at this time
10, clear needle control block 7 resets.Above-mentioned action in cycles, realizes the cyclic process of the clear needle of jacquard weave-degree mesh-.
As shown in Fig. 2, needle connecting rod 2 also can be used elastic material and be made in the present invention, needle connecting rod 2 and needle control-rod
It is connected by a shaft or rotary column between 5, moving track is provided for the stroke of needle connecting rod 2 it is not necessary that U-shaped corner slots are arranged.It is tied
Structure compared to used in embodiment one needle connecting rod 2 made of rigid material it is more simple, using upper more convenient, but accurate
It is not so good as slightly on degree.
The present invention is combined the action for driving clear needle with connecting rod mechanical mechanism using stepper motor, significantly reduces footwear machine machine
Head Organizational Parts weight, and to its structure carried out it is limited simplify, improve the operating frequency and speed of needle, clear needle, from
And the working efficiency of footwear machine and the stability of operation are improved, simple in structure, easy to produce, installation and repair.
Claims (5)
1. a kind of clear needle link mechanism of footwear machine, including clear needle driving lever, it is characterised in that:Equipped with clear needle connecting rod, clear needle control block,
Mesh adjusting block and clear needle control lever are spent, the both ends of clear needle connecting rod movably connect formation with clear needle driving lever, clear needle control block respectively and turn
Dynamic pair, the clear needle control block other end are arranged with clear needle control lever one end clearance fit;Mesh adjusting block one end is spent also to control with clear needle
The bar splaying is equipped with;The clear needle control lever is formed by connecting by 2 branch rod bearings, which is combined with a bearing
Control-rod, bearing control bar are connect with one for controlling the stepper motor that bearing control-rod moves reciprocatingly;The clear needle control
The other end of bar, clear needle driving lever middle part rotatably pinpoint on bottom plate or holder.
2. the clear needle link mechanism of a kind of footwear machine according to claim 1, it is characterised in that:The degree mesh adjusting block turns
It is connected with torsional spring between axis and the clear needle control lever end.
3. the clear needle link mechanism of a kind of footwear machine according to claim 1, it is characterised in that:Shape between described two struts
It is interior arc angle to be at an angle of smaller side angle, and other side angle is outer arc angle, bearing outer arc angle side and bearing control
Bar clearance fit in the same plane.
4. the clear needle link mechanism of a kind of footwear machine according to claim 2, it is characterised in that:The degree mesh adjusting block turns
It is connected with tension spring between axis and the shaft of clear needle control block.
5. the clear needle link mechanism of a kind of footwear machine according to claim 1, it is characterised in that:The bearing control bar with carry
Needle link mechanism shares.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810115437.8A CN108425178B (en) | 2016-09-27 | 2016-09-27 | A kind of clear needle link mechanism of footwear machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610854292.4A CN106222870B (en) | 2016-09-27 | 2016-09-27 | A kind of footwear machine needle link mechanism |
CN201810115437.8A CN108425178B (en) | 2016-09-27 | 2016-09-27 | A kind of clear needle link mechanism of footwear machine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610854292.4A Division CN106222870B (en) | 2016-09-27 | 2016-09-27 | A kind of footwear machine needle link mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108425178A true CN108425178A (en) | 2018-08-21 |
CN108425178B CN108425178B (en) | 2019-09-06 |
Family
ID=58077314
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810115437.8A Active CN108425178B (en) | 2016-09-27 | 2016-09-27 | A kind of clear needle link mechanism of footwear machine |
CN201610854292.4A Active CN106222870B (en) | 2016-09-27 | 2016-09-27 | A kind of footwear machine needle link mechanism |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610854292.4A Active CN106222870B (en) | 2016-09-27 | 2016-09-27 | A kind of footwear machine needle link mechanism |
Country Status (1)
Country | Link |
---|---|
CN (2) | CN108425178B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108425178B (en) * | 2016-09-27 | 2019-09-06 | 浙江海森纺机科技有限公司 | A kind of clear needle link mechanism of footwear machine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6609395B2 (en) * | 2000-11-22 | 2003-08-26 | Matec S.P.A. | Double-cylinder circular stocking knitting machine with structurally highly simplified cam box |
CN101591833A (en) * | 2009-06-19 | 2009-12-02 | 常熟市金龙机械有限公司 | The needle clearing mechanism of computer plain flat knitter |
CN102560858A (en) * | 2012-01-30 | 2012-07-11 | 江苏金龙科技股份有限公司 | Needling resetting mechanism of computerized flat knitting machine |
CN202499969U (en) * | 2012-04-18 | 2012-10-24 | 浙江自力机械有限公司 | Triangle mechanism for clean needle of flat knitting machine |
WO2016006012A1 (en) * | 2014-07-10 | 2016-01-14 | Mamytex Di Capra Mario Sas | Hosiery machine head |
CN106222870A (en) * | 2016-09-27 | 2016-12-14 | 浙江海森纺机科技有限公司 | A kind of footwear machine needle linkage and clear pin linkage |
CN206245000U (en) * | 2016-09-27 | 2017-06-13 | 浙江海森纺机科技有限公司 | A kind of footwear machine needle linkage and clear pin linkage |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59106548A (en) * | 1982-12-11 | 1984-06-20 | 株式会社島精機製作所 | Regulation of mesh |
JPH0694618B2 (en) * | 1990-04-05 | 1994-11-24 | 株式会社島精機製作所 | Stitch control device in flat knitting machine |
EP1536050B1 (en) * | 2002-08-06 | 2011-06-08 | Shima Seiki Mfg., Ltd | Knitting machine having variable rate-changing mechanism |
JP4015978B2 (en) * | 2003-09-02 | 2007-11-28 | 株式会社島精機製作所 | Flat knitting machine provided with movable yarn guide member |
JP4841335B2 (en) * | 2006-06-30 | 2011-12-21 | 株式会社島精機製作所 | Flat knitting machine |
CN102619011B (en) * | 2012-03-18 | 2013-10-23 | 经纬纺织机械股份有限公司 | Mechanism for adjusting density and tightness of knitted coil |
-
2016
- 2016-09-27 CN CN201810115437.8A patent/CN108425178B/en active Active
- 2016-09-27 CN CN201610854292.4A patent/CN106222870B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6609395B2 (en) * | 2000-11-22 | 2003-08-26 | Matec S.P.A. | Double-cylinder circular stocking knitting machine with structurally highly simplified cam box |
CN101591833A (en) * | 2009-06-19 | 2009-12-02 | 常熟市金龙机械有限公司 | The needle clearing mechanism of computer plain flat knitter |
CN102560858A (en) * | 2012-01-30 | 2012-07-11 | 江苏金龙科技股份有限公司 | Needling resetting mechanism of computerized flat knitting machine |
CN102560858B (en) * | 2012-01-30 | 2013-07-31 | 江苏金龙科技股份有限公司 | Needling resetting mechanism of computerized flat knitting machine |
CN202499969U (en) * | 2012-04-18 | 2012-10-24 | 浙江自力机械有限公司 | Triangle mechanism for clean needle of flat knitting machine |
WO2016006012A1 (en) * | 2014-07-10 | 2016-01-14 | Mamytex Di Capra Mario Sas | Hosiery machine head |
CN106222870A (en) * | 2016-09-27 | 2016-12-14 | 浙江海森纺机科技有限公司 | A kind of footwear machine needle linkage and clear pin linkage |
CN206245000U (en) * | 2016-09-27 | 2017-06-13 | 浙江海森纺机科技有限公司 | A kind of footwear machine needle linkage and clear pin linkage |
Also Published As
Publication number | Publication date |
---|---|
CN106222870A (en) | 2016-12-14 |
CN106222870B (en) | 2018-10-26 |
CN108425178B (en) | 2019-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN204109371U (en) | A kind of double end 3D printer of rotatable switching printhead | |
CN101775716B (en) | Auxiliary lifting mechanism of presser foot of computerized embroidery machine | |
CN106222870B (en) | A kind of footwear machine needle link mechanism | |
CN114775181B (en) | Full independent control intelligent high-speed embroidery aircraft nose | |
CN206245000U (en) | A kind of footwear machine needle linkage and clear pin linkage | |
CN201620247U (en) | Settlement triangular system of computerized flat knitter | |
CN108286115A (en) | A kind of driving mechanism for weaving loom | |
CN106521792B (en) | A kind of no head cross weaving needle driving mechanism, textile machine and its control method | |
CN209227165U (en) | A kind of weft-knitting Double-plate machine that can freely convert braiding tissue and yarn circle size | |
CN203700702U (en) | Dial linking machine | |
CN212505351U (en) | 360-degree all-dimensional shuttle towel device with single motor | |
CN111364180A (en) | Single-motor 360-degree omnibearing shuttle towel device | |
CN205258829U (en) | High -speed towel embroidery handpiece opens to shut down and constructs | |
CN102619011B (en) | Mechanism for adjusting density and tightness of knitted coil | |
CN2885907Y (en) | Looping mechanism of double warp machine | |
CN205653557U (en) | Loom selects latitude ware | |
CN111364181A (en) | Towel coil lifting mechanism and single-motor shuttle type towel device | |
US7475708B2 (en) | Shaft drive for heald shafts of weaving machines | |
CN208791887U (en) | A kind of cloth moves napping machine and cloth moves napping machine power mechanism | |
CN210420387U (en) | Electronic transverse movement control device of high-speed jacquard warp knitting machine | |
CN207933610U (en) | A kind of driving mechanism for weaving loom | |
CN205775126U (en) | Middle mountain drive mechanism in straight-bar machines | |
CN205258830U (en) | High guiding mechanism of high -speed towel embroidery handpiece piece of cloth hair | |
CN204825254U (en) | Knitting needle lift four -bar linkage | |
CN108823762A (en) | A kind of cloth moves napping machine and cloth moves napping machine power mechanism |
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 | ||
GR01 | Patent grant | ||
GR01 | Patent grant |