CN204959265U - Thread shifting device for sewing machine - Google Patents
Thread shifting device for sewing machine Download PDFInfo
- Publication number
- CN204959265U CN204959265U CN201520731275.2U CN201520731275U CN204959265U CN 204959265 U CN204959265 U CN 204959265U CN 201520731275 U CN201520731275 U CN 201520731275U CN 204959265 U CN204959265 U CN 204959265U
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- lift arm
- line spring
- thread
- line
- group
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Abstract
The utility model provides a thread shifting device for sewing machine belongs to sewing machine technical field. The trimming action was difficult to keep unanimously wait technical problem with group line action during it had solved current sewing machine. Sewing machine includes that the interval sets up moves sword and stationary knife, dial traditional thread binding put including the mount pad with can the wobbling actuating lever, the tip of actuating lever is articulated to have the swinging arms, articulated respectively on the swinging arms have connecting rod no. 1 and a connecting rod no. 2, connecting rod no. 1 with move the sword and be connected and drive and move the sword and carry out shearing movement towards the stationary knife, sliding connection has the lift arm on the mount pad, and connecting rod no. 2 articulates and drives lift arm reciprocal straight line on the mount pad mutually and slides with the lift arm, be equipped with on the mount pad and have elastic group of line spring, have on the lift arm can support when the lift arm removes and lean on on dialling the line spring and drive the promotion face of dialling the line spring and dialling the line. The utility model discloses in move the sword and drive through same driving source with dialling the line spring, the trimming action with dial the line action and go on in step, accomplish in the time of can accurate unerring realizations trimming and dial the line and move.
Description
Technical field
The utility model belongs to technical field of sewing equipment, relates to a kind of Sewing machines, particularly a kind of thread-moving device of Sewing machines.
Background technology
Sewing is the important manufacturing procedure of the products such as clothes clothing, and Sewing machines is the visual plant in sewing technology, uses one or more sewing thread, and sewing is formed one or more stitchings, makes one or more layers sewing interweave or unite by a seam.The principle of making of Sewing machines has been coordinated by the upper thread of upside and the bottom line of downside, need to carry out trimming after sewing completes, along with the raising of sewing device automaticity, trimming action is completed automatically by thread cutting mechanism, in trimming process, thread cutting mechanism should be avoided to repeat trimming and to cause the end of a thread to pile up.
China's patent (notification number: CN200981923; The day for announcing: 2007-11-28) disclose a kind of thread-moving device of Sewing machines, comprise support, the driving lever for group line, rotating shaft and an electromagnetic valve, electromagnetic valve is fixed on support, rotating shaft is axially fixed on support, driving lever is fixed in rotating shaft, be provided with one makes axis of rotation mechanical transmission mechanism by the movement of the spool of electromagnetic valve between rotating shaft and electromagnetic valve, mechanical transmission mechanism is made up of shift fork, crank and connecting rod etc., is also provided with the dialing spring for resetting betwixt.
Disclosed in above-mentioned patent, thread-moving device is driven separately by electromagnetic valve, the action sensitivity of electromagnetic valve is not high, reaction speed affects by multiple factors such as electric current, air pressure, strokes, be difficult in thread cutting mechanism trimming process ensure that thread-moving device is about to be pushed aside by the end of a thread when starting at trimming accurately after sewing completes, thus cause sewing machine case inside to have the end of a thread dropping accumulation, be difficult to cleaning.
Summary of the invention
The problems referred to above that the utility model exists for existing technology, provide a kind of thread-moving device of Sewing machines, technical problem to be solved in the utility model is: how to improve the uniformity of trimming action with group line action and the accurate reliability of group line in Sewing machines.
The purpose of this utility model realizes by following technical proposal:
A kind of thread-moving device of Sewing machines, described Sewing machines comprises spaced moving knife and stationary knife, it is characterized in that, the drive rod that described thread-moving device comprises mount pad and can swing, the end of described drive rod is hinged with swing arm, described swing arm is hinged with respectively connecting rod one and connecting rod two, described connecting rod one is connected with described moving knife and described moving knife can be driven to carry out shearing motion towards described stationary knife; Described mount pad slidably connects lift arm, and described connecting rod two is hinged with described lift arm and described connecting rod two can drive lift arm reciprocating linear on mount pad to slide; Described mount pad is provided with has flexible group of line spring, described lift arm has can be resisted against when lift arm moves to dial on line spring and drive to dial the lifting face that line dialled by line spring.
Its principle is as follows: Sewing machines is in the process of making, upper thread from rotating disk out, the end of a thread is clamped by clamp, after having made, by thread cutting mechanism, upper thread is cut off, in trimming process, because the end of a thread clamped from rotating disk upper thread out and clamp is all positioned at the share zone of thread cutting mechanism, drop in body after cutting off to prevent the end of a thread and pile up, the mechanical breakdown that the workload of minimizing cleaning the end of a thread and foreign matter cause, by this thread-moving device, the end of a thread that clamp clamps is stirred, avoid it to be cut off by thread cutting mechanism.In the technical program, the moving knife of trimming is driven by drive rod, in having made, automatically controlled to drive source signal, drive source drives above-mentioned drive rod to swing, drive rod drives swing arm to swing, and swing arm drives moving knife to carry out shearing motion towards stationary knife by connecting rod one, completes trimming; Simultaneously herewith, swing arm drivening rod two swings, connecting rod two is connected with lift arm and oscillating motion is converted into the rectilinear motion of lift arm, lift arm linearly slides and can move by promoting the line spring of dialling worn on dynamic mount pad on mount pad, dial line spring and move the end of a thread just stirring to live clamped by clamp, by the trimming region of its group from moving knife, thus drop after effectively preventing the end of a thread from being cut off and to pile up in the casing of Sewing machines.After trimming completes, lift arm reverse slide, dials line spring and resets under the effect of its own resilient, carry out the sewing action of next round.In the technical program moving knife with dial line spring and driven by same drive source, trimming action and dial line action and synchronously carry out, dial and opportunity of line spring action do not need artificial adjustment and control, just can precisely errorless realize trimming while complete group line action.
In the thread-moving device of above-mentioned Sewing machines, described group of line spring is cylindric, and described lift arm is strip, and described lifting face is the arc guide surface on lift arm lateral surface.Lift arm moves linearly, line spring jack-up will be dialled by promoting face, make it to dial line action, it is cylindric for dialling line spring, lifting face is arc guide surface, such lifting face with dial line spring contact and lift arm drives dial the action of line spring time, effectively can prevent stuck phenomenon, promoting face and group line spring by arc guide surface can better relative sliding.
In the thread-moving device of above-mentioned Sewing machines, described mount pad is installed with mounting blocks, described mounting blocks offers the groove of strip, described lift arm slides and is plugged in described groove.Lift arm slides in the groove of mount pad, carries out local spacing, prevent lift arm sideslip, ensure that the mobile route of lift arm lift arm, thus effectively ensures that lift arm drives the accuracy dialling line spring action moment and movement range.
In the thread-moving device of above-mentioned Sewing machines, described group of line spring one end is link, the other end is for dialling line end, link and the described mounting blocks of described group of line spring are connected, the side that described mounting blocks has groove is outside, the described group of line spring through the outside of described mounting blocks, the length direction of described group of line spring and the length direction of described groove perpendicular.The lifting face of lift arm can just to dialling line spring, and when lift arm moves, line spring is dialled in the forward contact of lifting face, and force is more even, makes group line spring action more stable.
In the thread-moving device of above-mentioned Sewing machines, described lift arm is flat-square shaped, and the side that described lift arm contacts with the diapire of described groove is plane, and described lifting face is positioned on lift arm side outwardly.Ensure that lift arm can slide stably in groove, ensure to promote in the face of group line spring effectively contacts and exerts a force simultaneously.
In the thread-moving device of above-mentioned Sewing machines, described group of line spring abuts on the lateral surface of described mounting blocks, described lift arm comprises raising section and reduction section, the height of described raising section is greater than the height of described groove, the height of described reduction section is less than the height of described groove, and the joining place of described raising section and reduction section forms described lifting face.Lift arm slides, and when dialling line spring and being positioned at the top of reduction section, group line spring is in goes back original position, and when dialling line spring and being positioned at the top of raising section, group line spring is in dials line position.
In the thread-moving device of above-mentioned Sewing machines, the link of described group of line spring bends to a side of described mounting blocks and is connected on the side of described mounting blocks, the middle part of described group of line spring has the bending segment that the another side to described mounting blocks bends, and described mounting blocks is provided with the spacer pin reclined mutually with the bending segment of described group of line spring.Forming torsion when dialling the deformation of line spring, be convenient to reset, carrying out spacing by spacer pin to dialling line spring local, ensure that and dial line spring not sideslip when moving, thus efficiently complete accurately and dial line action.
In the thread-moving device of above-mentioned Sewing machines, the side of described mounting blocks offers mounting groove, the link of described group of line spring is embedded in described mounting groove.Dial line spring spring steel wire to make, when the elastic deformation of torsion can be produced during the jack-up of the lifting face of lift arm, self play the effect of torsion spring, when lift arm resets, dial line spring and can automatically reset under the effect of this torsion.
In the thread-moving device of above-mentioned Sewing machines, described swing arm is provided with articulated column, and described swing arm is hinged on the middle part of described articulated column, and described connecting rod one and described connecting rod two are hinged on the two ends of described articulated column respectively.Swing arm, by articulated column drivening rod one and connecting rod two action simultaneously, arranges like this and can ensure that uniform force balances.
Compared with prior art, in the utility model, moving knife is driven by same drive source with group line spring, trimming action and dial line action and synchronously carry out, dials and opportunity of line spring action does not need artificial adjustment and control, just can precisely errorless realize trimming while complete group line action.
Accompanying drawing explanation
Fig. 1 is the perspective view one of this thread-moving device.
Fig. 2 is the perspective view two of this thread-moving device.
Fig. 3 is the mounting structure schematic diagram of this thread-moving device.
Fig. 4 is the partial enlargement structural representation in Fig. 3.
Fig. 5 is the status architecture schematic diagram before Sewing machines trimming.
Fig. 6 is the status architecture schematic diagram in Sewing machines trimming process.
Fig. 7 is the status architecture schematic diagram of Sewing machines trimming when completing.
Fig. 8 dials line spring status architecture schematic diagram when being Sewing machines trimming.
In figure, 1, moving knife; 2, stationary knife; 3, mount pad; 4, drive rod; 5, swing arm; 6, connecting rod one; 7, connecting rod two; 8, lift arm; 81, face is promoted; 82, raising section; 83, reduction section; 9, line spring is dialled; 91, link; 92, line end is dialled; 93, bending segment; 10, mounting blocks; 10a, groove; 10b, outside; 10c, mounting groove; 11, spacer pin; 12, articulated column; 13, rotating disk; 14, clamp; 15, upper thread.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As Fig. 5, shown in Fig. 6 and Fig. 7, Sewing machines comprises the thread cutting mechanism of spaced moving knife 1 and stationary knife 2 composition, Sewing machines is in the process of making, upper thread 15 from rotating disk 13 out, the end of a thread is clamped by clamp 14, after having made, by thread cutting mechanism, upper thread 15 is cut off, in trimming process, because the end of a thread clamped from rotating disk 13 upper thread 15 out and clamp 14 is all positioned at the share zone of thread cutting mechanism, drop in body after cutting off to prevent the end of a thread and pile up, the mechanical breakdown that the workload of minimizing cleaning the end of a thread and foreign matter cause, by this thread-moving device, the end of a thread that clamp 14 clamps is stirred, it is avoided to be cut off by thread cutting mechanism.
As shown in Figures 1 to 4, the drive rod 4 that in the present embodiment, thread-moving device comprises mount pad 3 and can swing, the end of drive rod 4 is hinged with swing arm 5, swing arm 5 is hinged with respectively connecting rod 1 and connecting rod 27, specifically, swing arm 5 is provided with articulated column 12, swing arm 5 is hinged on the middle part of articulated column 12, connecting rod 1 and connecting rod 27 are hinged on the two ends of articulated column 12 respectively, swing arm 5, by articulated column 12 drivening rod 1 and connecting rod 27 action simultaneously, arranges like this and can ensure that uniform force balances.Connecting rod 1 is connected with moving knife 1 and moving knife 1 can be driven to carry out shearing motion towards stationary knife 2; Mount pad 3 slidably connects lift arm 8, connecting rod 27 and lift arm 8 are hinged and connecting rod 27 can drive lift arm 8 reciprocating linear on mount pad 3 to slide; Mount pad 3 is provided with has flexible group of line spring 9, lift arm 8 has the lifting face 81 that can be resisted against when lift arm 8 moves and dial and line spring 9 also drives and dials line spring 9 groups of lines.
Shown in composition graphs 5, Fig. 6, Fig. 7 and Fig. 8, moving knife 1 is driven by drive rod 4, after having made, automatically controlled to drive source signal, drive source drives above-mentioned drive rod 4 to swing, drive rod 4 drives swing arm 5 to swing, and swing arm 5 drives moving knife 1 to carry out shearing motion towards stationary knife 2 by connecting rod 1, completes trimming; Simultaneously herewith, swing arm 5 drivening rod 27 swings, connecting rod 27 is connected with lift arm 8 and oscillating motion is converted into the rectilinear motion of lift arm 8, lift arm 8 linearly slides and the line spring 9 of dialling on mount pad 3 can be driven to move by lifting face 81 on mount pad 3, dial line spring 9 and move the end of a thread just stirring to live clamped by clamp 14, by the trimming region of its group from moving knife 1, thus drop after effectively preventing the end of a thread from being cut off and to pile up in the casing of Sewing machines.After trimming completes, lift arm 8 reverse slide, dials line spring 9 and resets under the effect of its own resilient, carry out the sewing action of next round.In the technical program moving knife 1 with dial line spring 9 and driven by same drive source, trimming action and dial line action and synchronously carry out, the opportunity of dialling line spring 9 action does not need artificial adjustment and control, just can precisely errorless realize trimming while complete group line action.
As shown in Figure 3 and Figure 4, dial line spring 9 in cylindric, lift arm 8 is strip, and lifting face 81 is the arc guide surface on lift arm 8 lateral surface; Mount pad 3 is installed with mounting blocks 10, mounting blocks 10 offers the groove 10a of strip, lift arm 8 slides and is plugged in groove 10a; Dialling line spring 9 one end is link 91, the other end is for dialling line end 92, and the link 91 dialling line spring 9 is connected with mounting blocks 10, and the side that mounting blocks 10 has groove 10a is outside 10b, dial the line spring 9 outside 10b through mounting blocks 10, the length direction dialling the length direction of line spring 9 and groove 10a is perpendicular.Lift arm 8 moves linearly, line spring 9 jack-up will be dialled by promoting face 81, make it to dial line action, dial line spring 9 in cylindric, lifting face 81 is arc guide surface, such lifting face 81 with dial line spring 9 contact and lift arm 8 drives dial 9 action of line spring time, effectively can prevent stuck phenomenon, promoting face 81 and group line spring 9 by arc guide surface can better relative sliding; Lift arm 8 slides in the groove 10a of mount pad 3, carries out local spacing, prevent lift arm 8 sideslip, ensure that the mobile route of lift arm 8 lift arm 8, thus effectively ensures that lift arm 8 drives the accuracy dialling line spring 9 action moment and movement range; The lifting face 81 of lift arm 8 is just to dialling line spring 9, and when lift arm 8 moves, line spring 9 is dialled in the forward contact of lifting face 81, and force is more even, makes group line spring 9 action more stable.
As shown in Figure 4, lift arm 8 is flat-square shaped, the side that lift arm 8 contacts with the diapire of groove 10a is plane, lifting face 81 is positioned on lift arm 8 side outwardly, lift arm 8 can slide stably in groove 10a, dialling line spring 9 abuts on the lateral surface of mounting blocks 10, lift arm 8 comprises raising section 82 and reduction section 83, the height of raising section 82 is greater than the height of groove 10a, the height of reduction section 83 is less than the height of groove 10a, and the joining place of raising section 82 and reduction section 83 forms lifting face 81; In lift arm 8 sliding process when dialling line spring 9 and being positioned at the top of reduction section 83, group line spring 9 is in goes back original position, when dialling line spring 9 and being positioned at the top of raising section 82, dials line spring 9 and is in group line position.
As shown in Figure 4, the link 91 dialling line spring 9 bend to a side of mounting blocks 10 and is connected on the side of mounting blocks 10, the side of mounting blocks 10 offers mounting groove 10c, and the link 91 of group line spring 9 is embedded in mounting groove 10c; Dial the middle part of line spring 9 and have the bending segment 93 that the another side to mounting blocks 10 bend, mounting blocks 10 is provided with the spacer pin 11 reclined mutually with the bending segment 93 of group line spring 9.Dial line spring 9 to make with spring steel wire, the elastic deformation of torsion can be produced when lifting face 81 jack-up by lift arm 8, self play the effect of torsion spring, when lift arm 8 resets, dial line spring 9 can automatically reset under the effect of this torsion, carrying out spacing by spacer pin 11 to dialling line spring 9 local, ensure that and dial line spring 9 not sideslip when moving, thus efficiently complete accurately and dial line action.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ 1 herein, moving knife; 2, stationary knife; 3, mount pad; 4, drive rod; 5, swing arm; 6, connecting rod one; 7, connecting rod two; 8, lift arm; 81, face is promoted; 82, raising section; 83, reduction section; 9, line spring is dialled; 91, link; 92, line end is dialled; 93, bending segment; 10, mounting blocks; 10a, groove; 10b, outside; 10c, mounting groove; 11, spacer pin; 12, articulated column; 13, rotating disk; 14, clamp; 15, the term such as upper thread, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (9)
1. the thread-moving device of a Sewing machines, described Sewing machines comprises spaced moving knife (1) and stationary knife (2), it is characterized in that, the drive rod (4) that described thread-moving device comprises mount pad (3) and can swing, the end of described drive rod (4) is hinged with swing arm (5), described swing arm (5) is hinged with respectively connecting rod one (6) and connecting rod two (7), described connecting rod one (6) is connected with described moving knife (1) and described moving knife (1) can be driven to carry out shearing motion towards described stationary knife (2); Described mount pad (3) slidably connects lift arm (8), described connecting rod two (7) is hinged with described lift arm (8) and described connecting rod two (7) can drive lift arm (8) to slide at the upper reciprocating linear of mount pad (3); Described mount pad (3) is provided with has flexible group of line spring (9), described lift arm (8) has can be resisted against when lift arm (8) is mobile to dial line spring (9) and go up and the lifting face (81) driving group line spring (9) group line.
2. the thread-moving device of Sewing machines according to claim 1, it is characterized in that, described group of line spring (9) is in cylindric, and described lift arm (8) is strip, and described lifting face (81) are the arc guide surface on lift arm (8) lateral surface.
3. the thread-moving device of Sewing machines according to claim 1 and 2, it is characterized in that, described mount pad (3) is installed with mounting blocks (10), described mounting blocks (10) offers the groove (10a) of strip, described lift arm (8) slides and is plugged in described groove (10a).
4. the thread-moving device of Sewing machines according to claim 3, it is characterized in that, described group of line spring (9) one end is link (91), the other end is for dialling line end (92), link (91) and the described mounting blocks (10) of described group of line spring (9) are connected, the side that described mounting blocks (10) has groove (10a) is outside (10b), the described group of line spring (9) is through the outside (10b) of described mounting blocks (10), the length direction of described group of line spring (9) and the length direction of described groove (10a) perpendicular.
5. the thread-moving device of Sewing machines according to claim 4, it is characterized in that, described lift arm (8) is flat-square shaped, the upper side contacted with the diapire of described groove (10a) of described lift arm (8) is plane, and described lifting face (81) are positioned on lift arm (8) side outwardly.
6. the thread-moving device of Sewing machines according to claim 5, it is characterized in that, described group of line spring (9) abuts on the lateral surface of described mounting blocks (10), described lift arm (8) comprises raising section (82) and reduction section (83), the height of described raising section (82) is greater than the height of described groove (10a), the height of described reduction section (83) is less than the height of described groove (10a), and the joining place of described raising section (82) and reduction section (83) forms described lifting face (81).
7. the thread-moving device of Sewing machines according to claim 4, it is characterized in that, the link (91) of described group of line spring (9) bends to a side of described mounting blocks (10) and is connected on the side of described mounting blocks (10), the middle part of described group of line spring (9) has the bending segment (93) that the another side to described mounting blocks (10) bends, and described mounting blocks (10) is provided with the spacer pin (11) reclined mutually with the bending segment (93) of described group of line spring (9).
8. the thread-moving device of Sewing machines according to claim 7, it is characterized in that, the side of described mounting blocks (10) offers mounting groove (10c), the link (91) of described group of line spring (9) is embedded in described mounting groove (10c).
9. the thread-moving device of Sewing machines according to claim 1 and 2, it is characterized in that, described swing arm (5) is provided with articulated column (12), described swing arm (5) is hinged on the middle part of described articulated column (12), and described connecting rod one (6) and described connecting rod two (7) are hinged on the two ends of described articulated column (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731275.2U CN204959265U (en) | 2015-09-19 | 2015-09-19 | Thread shifting device for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731275.2U CN204959265U (en) | 2015-09-19 | 2015-09-19 | Thread shifting device for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204959265U true CN204959265U (en) | 2016-01-13 |
Family
ID=55054340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520731275.2U Withdrawn - After Issue CN204959265U (en) | 2015-09-19 | 2015-09-19 | Thread shifting device for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204959265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133212A (en) * | 2015-09-19 | 2015-12-09 | 浙江中捷缝纫科技有限公司 | Thread drawing device of sewing machine |
| CN107268203A (en) * | 2017-06-29 | 2017-10-20 | 杰克缝纫机股份有限公司 | A kind of thread-moving device |
-
2015
- 2015-09-19 CN CN201520731275.2U patent/CN204959265U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133212A (en) * | 2015-09-19 | 2015-12-09 | 浙江中捷缝纫科技有限公司 | Thread drawing device of sewing machine |
| CN105133212B (en) * | 2015-09-19 | 2017-07-18 | 浙江中捷缝纫科技有限公司 | A kind of thread-moving device of sewing machine |
| CN107268203A (en) * | 2017-06-29 | 2017-10-20 | 杰克缝纫机股份有限公司 | A kind of thread-moving device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160913 Address after: 317604 Taizhou Province, Yuhuan County, Lantau Island Road, Hing Hong Kong Road, No. 198 Patentee after: Zhejiang Zoje Sewing Technology Co., Ltd. Patentee after: Zhejiang Zhongyi Sewing Machine Co Ltd Patentee after: Zhejiang Besserman sewing machine Co., Ltd. Address before: 317600, Taizhou, Zhejiang province Yuhuan County barley island Street Hing Tung Road, No. 198 Patentee before: Zhejiang Zoje Sewing Technology Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160113 Effective date of abandoning: 20170718 |
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| AV01 | Patent right actively abandoned |