CN202430439U - Needle bed swing mechanism of multi-bar Raschel tricot machine - Google Patents
Needle bed swing mechanism of multi-bar Raschel tricot machine Download PDFInfo
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- CN202430439U CN202430439U CN201220008133XU CN201220008133U CN202430439U CN 202430439 U CN202430439 U CN 202430439U CN 201220008133X U CN201220008133X U CN 201220008133XU CN 201220008133 U CN201220008133 U CN 201220008133U CN 202430439 U CN202430439 U CN 202430439U
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- connecting rod
- eccentric wheel
- fuel tank
- needle
- eccentric bushing
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Abstract
The utility model discloses a needle bed swing mechanism of a multi-bar Raschel tricot machine. The mechanism comprises a driving main shaft, an eccentric wheel, an oil tank output rod, an upper swinging arm, a looping swinging shaft, a guiding arm and a connecting rod support, wherein the eccentric wheel is fixedly installed on the driving main shaft, one end of the upper swinging arm is connected fixedly with the looping swing shaft, the other end of the upper swinging arm is connected with the upper portion of the oil tank output rod in a rotating mode, the upper end of the guiding arm is connected with the groove needle bed in a sliding mode, the lower end of the guiding arm is connected with the looping swinging shaft fixedly, a needle core bed is connected with a groove needle bed in a sliding mode, an eccentric bushing connecting rod and a triangular connecting rod are arranged between the eccentric wheel and the oil tank output rod, the lower end of the eccentric bushing connecting rod is sleeved on the eccentric wheel, the upper end of the eccentric bushing connecting rod is connected with the bottom end of the triangular connecting rod in a rotating mode, the upper left end of the triangular connecting rod is connected with the connecting rod support is a rotating mode, and the upper right end of the triangular connecting rod is connected with the lower end of the oil tank output end in a rotating mode. The swinging stroke speed ratio coefficient is close to 1:1, and the mechanism is suitable for high-speed braiding, simple in structure, short in driving route and reliable in working.
Description
Technical field
The utility model relates to a kind of lopping motion of warp knitting machine, particularly relates to the needle-bar swing mechanism in many comb Raschel looms lopping motions.
Background technology
The needle-bar of many comb Raschel loomss comprises groove pin bed that groove pin is installed and the nook closing member bed that nook closing member is installed, and the needle-bar motion is moved up and down by needle-bar and the needle-bar oscillating motion is composited.In warp knitting machine, move up and down and the oscillating motion of needle-bar of needle-bar are accomplished by corresponding needle-bar up-down mechanism and needle-bar swing mechanism respectively.In the lopping motion, because the needle-bar swing mechanism is very big to the knitting property influence of warp knitting machine, thereby particularly important.
The needle-bar swing mechanism of existing many comb Raschel loomss; Like Chinese utility model patent ZL201020236036.7; Name is called the disclosed a kind of structure of a kind of warp knitting machine groove pin nook closing member swing mechanism, and it comprises transmission main shaft, is fixedly mounted on the connecting rod rack of eccentric wheel, connecting rod, swing arm down, fuel tank take-off lever, top link, lopping arm shaft, leading arm and warp knitting machine on the said transmission main shaft; One end of said top link is fixedly connected with said lopping arm shaft, and the upper end of the other end and said fuel tank take-off lever is rotationally connected; The upper end of said leading arm is slidingly connected with the groove pin bed that groove pin is installed, and the lower end of said leading arm is fixedly connected with said lopping arm shaft; Nook closing member bed and said groove pin bed that nook closing member is installed are slidingly connected; The lower end of said connecting rod is sleeved on the said eccentric wheel; One end of said down swing arm and the lower end of fuel tank take-off lever are rotationally connected with the upper end of said connecting rod respectively; The said other end and the said connecting rod rack of swing arm down are rotationally connected, and said transmission main shaft is installed in the warp knitting machine fuel tank rotationally, and said lopping arm shaft is installed on the supporting base on warp knitting machine fuel tank top rotationally.There is following defective at work in the needle-bar swing mechanism of this structure; Promptly adopt Stefansson type plane six bar mechanism to realize the oscillating motion of groove pin bed and nook closing member bed, thereby on the one hand, the oscillating stroke speed ratio factor of this swing mechanism is bigger owing to it; Be about 1 ︰ 1.5; Thereby be unfavorable for braiding at a high speed, on the other hand, the oscillating stroke speed ratio factor of this swing mechanism is not only relevant with the kinetic characteristic of first order crank and rocker mechanism; And it is relevant with the coupler-point curve of first order connecting rod formation; Thereby the mechanism design difficulty is big, cause in the Design Theory advanceto returntime ratio often with real work in the advanceto returntime ratio error bigger, thereby cause scrapping in a large number of parts.
Chinese invention patent ZL201010154168.X also discloses a kind of knitting needle bed swinging mechanism of warp knitting machine, and it adopts the plane eight-bar linkage to realize the oscillating motion of groove pin bed and nook closing member bed, the swing mechanism of this structure; Not only the oscillating stroke speed ratio factor is bigger; Approach 1 ︰ 2, thereby be unfavorable for braiding at a high speed, and complex structure; Drive path is long, and reliability is relatively poor.
Summary of the invention
It is less that the technical problem that the utility model will solve provides a kind of not only oscillating stroke speed ratio factor; Approach 1 ︰ 1; Thereby can be applicable at a high speed braiding, and simple in structure, easy design, drive path are short, the needle-bar swing mechanism of many combs Raschel looms of good reliability.
For solving the problems of the technologies described above; The needle-bar swing mechanism of the Raschel looms of comb more than first kind that the utility model adopted is that it comprises the transmission main shaft that is installed in rotationally in the warp knitting machine fuel tank, the connecting rod rack that is fixedly mounted on eccentric wheel, fuel tank take-off lever, top link, lopping arm shaft, leading arm and warp knitting machine on the said transmission main shaft; One end of said top link is fixedly connected with said lopping arm shaft, and the upper end of the other end and said fuel tank take-off lever is rotationally connected; The upper end of said leading arm is slidingly connected with the groove pin bed that groove pin is installed, and the lower end of said leading arm is fixedly connected with said lopping arm shaft; Nook closing member bed and said groove pin bed that nook closing member is installed are slidingly connected; Between said eccentric wheel and fuel tank take-off lever, be provided with eccentric bushing connecting rod and delta link; The lower end of said eccentric bushing connecting rod is sleeved on the said eccentric wheel; The upper end of said eccentric bushing connecting rod and the bottom of said delta link are rotationally connected, and the left upper end of said delta link and said connecting rod rack are rotationally connected, and the lower end of the upper right side of said delta link and said fuel tank take-off lever is rotationally connected.
For solving the problems of the technologies described above; The needle-bar swing mechanism of the Raschel looms of comb more than second kind that the utility model adopted is that it comprises the transmission main shaft that is installed in rotationally in the warp knitting machine fuel tank, the connecting rod rack that is fixedly mounted on eccentric wheel, fuel tank take-off lever, top link, lopping arm shaft, leading arm and warp knitting machine on the said transmission main shaft; One end of said top link is fixedly connected with said lopping arm shaft, and the upper end of the other end and said fuel tank take-off lever is rotationally connected; The upper end of said leading arm is slidingly connected with the groove pin bed that groove pin is installed, and the lower end of said leading arm is fixedly connected with said lopping arm shaft; Nook closing member bed and said groove pin bed that nook closing member is installed are slidingly connected; Between said eccentric wheel and fuel tank take-off lever, be provided with eccentric bushing connecting rod and delta link; The lower end of said eccentric bushing connecting rod is sleeved on the said eccentric wheel; The upper end of said eccentric bushing connecting rod and the left upper end of said delta link are rotationally connected, and the bottom of said delta link and said connecting rod rack are rotationally connected, and the lower end of the upper right side of said delta link and said fuel tank take-off lever is rotationally connected.
After adopting said structure; Because the utility model is provided with eccentric bushing connecting rod and delta link between eccentric wheel and fuel tank take-off lever; Thereby the utility model swing mechanism adopts is the oscillating motion that watt (WATT) type plane six bar mechanism that a double rocker mechanism by a primary crank endplay device and follow-up series connection constitutes is realized groove pin bed and nook closing member bed; This mechanism is in when work, the average speed approximately equal of needle-bar reciprocally swinging, and the time ratio of needle-bar reciprocally swinging approaches 1 ︰ 1; The oscillating stroke speed ratio factor that is needle-bar approaches 1 ︰ 1; The oscillating stroke speed ratio factor is less, makes that the acceleration extreme value of needle-bar is less, thereby can be applicable to braiding at a high speed better.Again because the oscillating stroke speed ratio factor of the utility model swing mechanism is only definite by the primary crank endplay device; The reciprocally swinging of the driven member top link of double rocker mechanism is to not influence of advanceto returntime ratio; Thereby the swing mechanism easy design of the utility model; Advanceto returntime ratio in the Design Theory conforms to advanceto returntime ratio in the real work, thereby has saved production cost greatly.In addition, because the kinematic pair of the utility model swing mechanism rotates lower pair for the plane entirely, thereby simple in structure, easy to process, and the drive path of the utility model is short, reliable operation.
As a kind of preferred implementation of the utility model, between the lower end of said eccentric bushing connecting rod and eccentric wheel, also be provided with bearing, the lower end of said eccentric bushing connecting rod is contained on the said eccentric wheel through this bearing holder (housing, cover).After adopting such structure, can reduce eccentric bushing connecting rod and the eccentric wheel frictional force when rotating, prolong its service life, and make the rotation of eccentric bushing connecting rod more flexible, it is more reliable to work.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further to specify.
Fig. 1 combs the schematic diagram of mechanism of first kind of embodiment of the needle-bar swing mechanism of Raschel looms more for the utility model.
Fig. 2 is the structural representation of needle-bar swing mechanism shown in Figure 1.
Fig. 3 combs the schematic diagram of mechanism of second kind of embodiment of the needle-bar swing mechanism of Raschel looms more for the utility model.
Fig. 4 is the structural representation of needle-bar swing mechanism shown in Figure 3.
The specific embodiment
Referring to the needle-bar swing mechanism of many combs Raschel looms of Fig. 1, the first kind of embodiment of the utility model shown in 2, comprise the transmission main shaft A that is installed in rotationally in the warp knitting machine fuel tank
0, be fixedly mounted on said transmission main shaft A
0On eccentric wheel 1, fuel tank take-off lever 2, top link 3, lopping arm shaft C
0, leading arm 4 and warp knitting machine connecting rod rack; One end of said top link 3 and said lopping arm shaft C
0Be fixedly connected, the upper end C of the other end and said fuel tank take-off lever 2 is rotationally connected; The upper end 4-1 of said leading arm 4 is slidingly connected the lower end of said leading arm 4 and said lopping arm shaft C with the groove pin bed 5 that groove pin 5-1 is installed through first guide pillar 10
0Be fixedly connected; The nook closing member bed 6 that nook closing member 6-1 is installed is slidingly connected with said groove pin bed 5 through second guide pillar 11, and the knocking over needle-bar 12 that knocking over pin 12-1 is installed is fixedly mounted on the upper end 4-1 of said leading arm 4, said lopping arm shaft C
0Be installed in rotationally on the supporting base on warp knitting machine fuel tank top; Between said eccentric wheel 1 and fuel tank take-off lever 2, be provided with eccentric bushing connecting rod 7 and delta link 8; The lower end A of said eccentric bushing connecting rod 7 is provided with a through hole 7-1; The lower end A of eccentric bushing connecting rod 7 is sleeved on the said eccentric wheel 1 through this through hole 7-1, and the upper end of said eccentric bushing connecting rod 7 is rotationally connected through the bottom B of bearing pin and said delta link 8, the left upper end B of said delta link 8
0Be rotationally connected the upper right side B of said delta link 8 through minor axis 13 and bearing and said connecting rod rack
1Lower end through bearing pin and said fuel tank take-off lever 2 is rotationally connected.The needle-bar swing mechanism of this embodiment is by a primary crank endplay device A
0AB B
0Follow-up series connection double rocker mechanism B again
0B
1C C
0Watt (WATT) the type plane six bar mechanism that constitutes is realized the oscillating motion of groove pin bed 5, nook closing member bed 6 and knocking over needle-bar 12; This swing mechanism is when work; The input curve of eccentric wheel 1 is identical with the curve of output direction of top link 3, the average speed approximately equal of groove pin bed 5, nook closing member bed 6 and knocking over needle-bar 12 reciprocally swingings, and the time ratio of three needle-bar reciprocally swingings approaches 1 ︰ 1; The oscillating stroke speed ratio factor that is needle-bar approaches 1 ︰ 1; The oscillating stroke speed ratio factor is less, and the acceleration extreme value of three needle-bars is less, thereby can be applicable to braiding at a high speed better.
Referring to the needle-bar swing mechanism of many combs Raschel looms of Fig. 3, the second kind of embodiment of the utility model shown in 4, comprise the transmission main shaft A that is installed in rotationally in the warp knitting machine fuel tank
0, be fixedly mounted on said transmission main shaft A
0On eccentric wheel 1, fuel tank take-off lever 2, top link 3, lopping arm shaft C
0, leading arm 4 and warp knitting machine connecting rod rack; One end of said top link 3 and said lopping arm shaft C
0Be fixedly connected, the upper end C of the other end and said fuel tank take-off lever 2 is rotationally connected; The upper end 4-1 of said leading arm 4 is slidingly connected the lower end of said leading arm 4 and said lopping arm shaft C with the groove pin bed 5 that groove pin 5-1 is installed through first guide pillar 10
0Be fixedly connected; The nook closing member bed 6 that nook closing member 6-1 is installed is slidingly connected with said groove pin bed 5 through second guide pillar 11, and the knocking over needle-bar 12 that knocking over pin 12-1 is installed is fixedly mounted on the upper end 4-1 of said leading arm 4, said lopping arm shaft C
0Be installed in rotationally on the supporting base on warp knitting machine fuel tank top; Between said eccentric wheel 1 and fuel tank take-off lever 2, be provided with eccentric bushing connecting rod 7 and delta link 8; The lower end A of said eccentric bushing connecting rod 7 is provided with a through hole 7-1; The lower end A of eccentric bushing connecting rod 7 is sleeved on the said eccentric wheel 1 through this through hole 7-1, and the upper end of said eccentric bushing connecting rod 7 is through the left upper end B of bearing pin and said delta link 8
0Be rotationally connected, the bottom B of said delta link 8 is rotationally connected the upper right side B of said delta link 8 through minor axis 14 and bearing and said connecting rod rack
1Lower end through bearing pin and said fuel tank take-off lever 2 is rotationally connected.The needle-bar swing mechanism of this embodiment is by a primary crank endplay device A
0A B
0B is a double rocker mechanism B of follow-up series connection again
0B
1C C
0Watt (WATT) the type plane six bar mechanism that constitutes is realized the oscillating motion of groove pin bed 5, nook closing member bed 6 and knocking over needle-bar 12; This swing mechanism is when work; The curve of output of the input curve of eccentric wheel 1 and top link 3 is in the opposite direction, the average speed approximately equal of groove pin bed 5, nook closing member bed 6 and knocking over needle-bar 12 reciprocally swingings, and the time ratio of three needle-bar reciprocally swingings approaches 1 ︰ 1; The oscillating stroke speed ratio factor that is needle-bar approaches 1 ︰ 1; The oscillating stroke speed ratio factor is less, and the acceleration extreme value of three needle-bars is less, thereby can be applicable to braiding at a high speed better.
When oscillating motion; In above-mentioned two kinds of embodiments,, prolong its service life for reducing eccentric bushing connecting rod 7 and the frictional force of eccentric wheel 1 when rotating; And make the rotation of eccentric bushing connecting rod 7 more flexible; A bearing 9 can be set between the lower end of said eccentric bushing connecting rod 7 A and eccentric wheel 1, and this bearing 9 is placed among the said through hole 7-1 of eccentric bushing connecting rod 7 lower end A, and the lower end A of said eccentric bushing connecting rod 7 is sleeved on the said eccentric wheel 1 through this bearing 9.
Below the course of work of the swing mechanism of the utility model when yarn lopping campaign: through transmission main shaft A
0With rotatablely moving of the eccentric wheel that is fixedly connected with it 1; And under the effect of eccentric bushing connecting rod 7; Realize that delta link 8 swings up and down; The swing of delta link 8 make fuel tank take-off lever 2 with the mode that promotes up and down with transport of kinetic energy to top link 3, realize swinging up and down of top link 3, top link 3 is through lopping arm shaft C
0Make leading arm 4 drive groove pin bed 5, nook closing member bed 6 and knocking over needle-bar 12 and do oscillating traverse motion simultaneously.
Through on probation, the oscillating stroke speed ratio factor of the utility model is 1 ︰ 1.022, approaches 1 ︰ 1, can be applicable to braiding at a high speed well, and simple in structure, drive path short, reliable operation, obtained good effect.
Claims (4)
1. the needle-bar swing mechanism of the Raschel looms of comb more than a kind comprises the transmission main shaft (A that is installed in rotationally in the warp knitting machine fuel tank
0), be fixedly mounted on said transmission main shaft (A
0) on eccentric wheel (1), fuel tank take-off lever (2), top link (3), lopping arm shaft (C
0), the connecting rod rack of leading arm (4) and warp knitting machine; One end of said top link (3) and said lopping arm shaft (C
0) be fixedly connected, the upper end (C) of the other end and said fuel tank take-off lever (2) is rotationally connected; The upper end (4-1) of said leading arm (4) is slidingly connected the lower end of said leading arm (4) and said lopping arm shaft (C with the groove pin bed (5) that groove pin (5-1) is installed
0) be fixedly connected; The nook closing member bed (6) that nook closing member (6-1) is installed is slidingly connected with said groove pin bed (5); It is characterized in that: between said eccentric wheel (1) and fuel tank take-off lever (2), be provided with eccentric bushing connecting rod (7) and delta link (8); The lower end (A) of said eccentric bushing connecting rod (7) is sleeved on the said eccentric wheel (1); The bottom (B) of the upper end of said eccentric bushing connecting rod (7) and said delta link (8) is rotationally connected, the left upper end (B of said delta link (8)
0) be rotationally connected the upper right side (B of said delta link (8) with said connecting rod rack
1) be rotationally connected with the lower end of said fuel tank take-off lever (2).
2. the needle-bar swing mechanism of many comb Raschel loomss according to claim 1; It is characterized in that: between lower end of said eccentric bushing connecting rod (7) (A) and eccentric wheel (1), be provided with bearing (9), the lower end (A) of said eccentric bushing connecting rod (7) is sleeved on the said eccentric wheel (1) through this bearing (9).
3. the needle-bar swing mechanism of the Raschel looms of comb more than a kind comprises the transmission main shaft (A that is installed in rotationally in the warp knitting machine fuel tank
0), be fixedly mounted on said transmission main shaft (A
0) on eccentric wheel (1), fuel tank take-off lever (2), top link (3), lopping arm shaft (C
0), the connecting rod rack of leading arm (4) and warp knitting machine; One end of said top link (3) and said lopping arm shaft (C
0) be fixedly connected, the upper end (C) of the other end and said fuel tank take-off lever (2) is rotationally connected; The upper end (4-1) of said leading arm (4) is slidingly connected the lower end of said leading arm (4) and said lopping arm shaft (C with the groove pin bed (5) that groove pin (5-1) is installed
0) be fixedly connected; The nook closing member bed (6) that nook closing member (6-1) is installed is slidingly connected with said groove pin bed (5); It is characterized in that: between said eccentric wheel (1) and fuel tank take-off lever (2), be provided with eccentric bushing connecting rod (7) and delta link (8); The lower end (A) of said eccentric bushing connecting rod (7) is sleeved on the said eccentric wheel (1), the left upper end (B of the upper end of said eccentric bushing connecting rod (7) and said delta link (8)
0) be rotationally connected, the bottom (B) of said delta link (8) is rotationally connected the upper right side (B of said delta link (8) with said connecting rod rack
1) be rotationally connected with the lower end of said fuel tank take-off lever (2).
4. the needle-bar swing mechanism of many comb Raschel loomss according to claim 3; It is characterized in that: between lower end of said eccentric bushing connecting rod (7) (A) and eccentric wheel (1), be provided with bearing (9), the lower end (A) of said eccentric bushing connecting rod (7) is sleeved on the said eccentric wheel (1) through this bearing (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220008133XU CN202430439U (en) | 2012-01-10 | 2012-01-10 | Needle bed swing mechanism of multi-bar Raschel tricot machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220008133XU CN202430439U (en) | 2012-01-10 | 2012-01-10 | Needle bed swing mechanism of multi-bar Raschel tricot machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202430439U true CN202430439U (en) | 2012-09-12 |
Family
ID=46779901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220008133XU Withdrawn - After Issue CN202430439U (en) | 2012-01-10 | 2012-01-10 | Needle bed swing mechanism of multi-bar Raschel tricot machine |
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|---|---|
| CN (1) | CN202430439U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560870A (en) * | 2012-01-10 | 2012-07-11 | 常州市润源经编机械有限公司 | Needle bed swing mechanism for multi-bar Raschel warp knitting machine |
| CN104213326A (en) * | 2014-09-26 | 2014-12-17 | 江苏润源控股集团有限公司 | Knitting mechanism of high-speed warp knitting machine |
| CN104264361A (en) * | 2014-09-26 | 2015-01-07 | 江苏润源控股集团有限公司 | Knitting mechanism of high-speed warp knitting machine |
| CN106400293A (en) * | 2016-11-30 | 2017-02-15 | 江苏理工学院 | Groove pin moving device for few-bar warp knitting machine |
| CN107938199A (en) * | 2017-12-22 | 2018-04-20 | 温州市华龙印刷机械有限公司 | A kind of lift pin mechanism |
| CN113756008A (en) * | 2021-09-30 | 2021-12-07 | 常州市隆龙升经编机械有限公司 | Guide pipe transverse moving mechanism for large-transverse-moving looping warp knitting machine, warp knitting machine and working method |
| CN114150429A (en) * | 2021-11-17 | 2022-03-08 | 福建省鑫港纺织机械有限公司 | High-speed warp knitting machine with knitting needle bed swing mechanism |
-
2012
- 2012-01-10 CN CN201220008133XU patent/CN202430439U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560870A (en) * | 2012-01-10 | 2012-07-11 | 常州市润源经编机械有限公司 | Needle bed swing mechanism for multi-bar Raschel warp knitting machine |
| CN104213326A (en) * | 2014-09-26 | 2014-12-17 | 江苏润源控股集团有限公司 | Knitting mechanism of high-speed warp knitting machine |
| CN104264361A (en) * | 2014-09-26 | 2015-01-07 | 江苏润源控股集团有限公司 | Knitting mechanism of high-speed warp knitting machine |
| CN104213326B (en) * | 2014-09-26 | 2016-04-13 | 江苏润源控股集团有限公司 | The knitting mechanism of Warp Knitted Fabrics |
| CN106400293A (en) * | 2016-11-30 | 2017-02-15 | 江苏理工学院 | Groove pin moving device for few-bar warp knitting machine |
| CN106400293B (en) * | 2016-11-30 | 2017-12-12 | 江苏理工学院 | A kind of few guide bar warp knitting machine groove pin telecontrol equipment |
| CN107938199A (en) * | 2017-12-22 | 2018-04-20 | 温州市华龙印刷机械有限公司 | A kind of lift pin mechanism |
| CN107938199B (en) * | 2017-12-22 | 2021-02-02 | 温州市华龙印刷机械有限公司 | Needle raising mechanism |
| CN113756008A (en) * | 2021-09-30 | 2021-12-07 | 常州市隆龙升经编机械有限公司 | Guide pipe transverse moving mechanism for large-transverse-moving looping warp knitting machine, warp knitting machine and working method |
| CN114150429A (en) * | 2021-11-17 | 2022-03-08 | 福建省鑫港纺织机械有限公司 | High-speed warp knitting machine with knitting needle bed swing mechanism |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120912 Effective date of abandoning: 20140212 |
|
| RGAV | Abandon patent right to avoid regrant |