CN203317520U - Internal thread machining equipment for prestressed reinforced concrete hollow pile - Google Patents
Internal thread machining equipment for prestressed reinforced concrete hollow pile Download PDFInfo
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- CN203317520U CN203317520U CN2013200371017U CN201320037101U CN203317520U CN 203317520 U CN203317520 U CN 203317520U CN 2013200371017 U CN2013200371017 U CN 2013200371017U CN 201320037101 U CN201320037101 U CN 201320037101U CN 203317520 U CN203317520 U CN 203317520U
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- reinforced concrete
- concrete hollow
- hollow pile
- prestressed reinforced
- cutter shaft
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Abstract
An internal thread machining equipment for a prestressed reinforced concrete hollow pile comprises a machine body, wherein the machine body can move relative to a machining die for the prestressed reinforced concrete hollow pile; the machine body and the machining die are driven by the same driving shaft; a cutter shaft is mounted on the machine body and can be adjusted in position relative to machine body; a tool bit is arranged on the cutter shaft; a worm gear is movably connected with the machine body and driven by a driving worm; a speed change mechanism is arranged between the driving worm and the driving shaft for the machining die; the velocity ratio between the driving wheel and the driven wheel of the speed change mechanism is corresponding to that between the machining die and machining die driving wheels; an adjusting screw for adjusting the position of the cutter shaft in the vertical direction is fixedly connected with the cutter shaft and movably connected with the machine body; a waste residue gathering unit is fixedly connected with the cutter shaft. The internal thread machining equipment is used for machining the internal thread of the prestressed reinforced concrete hollow pile, and is simple in structure, high in machining efficiency, controllable in machining precision and convenient to use and maintain.
Description
Technical field
The utility model relates to internal thread machining equipment, particularly prestressed reinforced concrete hollow pile internal thread machining equipment.
Background technology
The applicant has two patents of invention now: one is " with the prestress reinforced concrete circular hollow pile of internal gearing structure ", the patent No.: 201020188071.6, one is " with prestressed reinforced concrete rectangular hollow pile and the processing method thereof of internal gearing structure ", the patent No.: 201010170582.X, two patents of invention have all provided on the center cylindrical hole inwall axial at the perforation pile body female structure have been set, the adhesion of center cylindrical hole that makes to build the downward part armored concrete of cushion cap and prestressed reinforced concrete hollow pile is strong, effectively solved the problem of armored concrete slippage from prestressed reinforced concrete hollow pile center cylindrical hole of the downward part of cushion cap, conscientiously the danger cover occurs to have prevented that the building on the cushion cap from rocking under external force or swinging.But, due to prestressed reinforced concrete hollow pile huge structure, the internal thread machining difficulty, brought difficulty to applying of this new technology.
Summary of the invention
The purpose of this utility model is to provide a kind of equipment that is specifically designed to processing prestressed reinforced concrete hollow pile internal thread.
Solution of the present utility model: contain the body that can move relative to the processing mold of processed prestressed reinforced concrete hollow pile, the processing mold of body and processed prestressed reinforced concrete hollow pile is by same drive shaft, the cutter shaft adjustable with the body relative position has been installed on body, and cutter shaft is provided with cutter head.
The cutter shaft outside dimension is 1/3 to 3/5 of processed prestressed reinforced concrete hollow pile center cylindrical hole aperture.
Be connected with worm gear on body, worm gear, by driving worm drive, drives the drive shaft of worm screw by the processing mold that drives processed prestressed reinforced concrete hollow pile.
Be provided with gear between the driving shaft of the processing mold of driving worm screw and processed prestressed reinforced concrete hollow pile, the processing mold of the driving wheel of gear and the speed ratio of follower and processed prestressed reinforced concrete hollow pile and the speed ratio of processing mold driving wheel are corresponding, can be according to the size of the processing mold size of different prestressed reinforced concrete hollow piles, adjust the driving wheel of gear and the speed ratio of follower, guarantee the advance displacement of a pitch of body, it is advance one section internal thread of pitch multiple of body that cutter shaft processes pitch on the center cylindrical hole inwall of prestressed reinforced concrete hollow pile.
Be fixedly connected with the adjustment screw rod of adjusting the cutter shaft upper-lower position on cutter shaft, adjusting screw rod and body is flexibly connected, the thread degree of depth according to processed prestressed reinforced concrete hollow pile internal thread, regulate the relative position of adjusting screw rod and body, after cutter head on cutter shaft is adjusted to Working position, cutter shaft is fixed on body.
One end of cutter shaft is flexibly connected with an end of the adjustment handle of adjusting the cutter shaft circumferential position, the other end and the body of adjusting handle are flexibly connected, before cutter shaft does not enter processed prestressed reinforced concrete hollow pile inner chamber, the thread degree of depth according to processed prestressed reinforced concrete hollow pile internal thread, cutter head on cutter shaft is adjusted to Working position, with the adjustment handle be movably connected on cutter shaft, cutter shaft is turned an angle, make cutter head on cutter shaft avoid the inwall of processed prestressed reinforced concrete hollow pile inner chamber, enter smoothly the Working position of processed prestressed reinforced concrete hollow pile inner chamber at cutter shaft after, rotate again and adjust handle, make cutter head on cutter shaft embed the inwall of processed prestressed reinforced concrete hollow pile inner chamber, initial state in processing, to adjust handle fixes again, make the cutter shaft circumferential position also corresponding fixing, effectively guaranteed the thread machining accuracy of internal thread.
Cutter head and cutter shaft are flexibly connected, and after the relative position of adjusting cutter head and cutter shaft, cutter head are fixed on cutter shaft, and cutter head can be reused after long-term use produces wearing and tearing.
Be fixedly connected with the waste residue gathering-device on cutter shaft.
The waste residue gathering-device contains waste residue collects sleeve pipe, waste residue is collected sleeve pipe and is fixed on cutter shaft, waste residue is collected sleeve pipe and is provided with the waste residue acquisition port, the waste residue acquisition port is positioned at the cutter head periphery on cutter shaft, waste residue is collected on sleeve pipe and also is provided with water inlet pipe and residue outlet, the water inlet of water inlet pipe is positioned at the front end that waste residue is collected sleeve pipe, residue outlet is arranged on waste residue and collects the sleeve pipe rear portion, after waste residue enters waste residue collection sleeve pipe, water by the ejection of the water inlet of water inlet pipe is flushed to by waste residue the rear portion that waste residue is collected sleeve pipe, by the residue outlet that is arranged on waste residue collection sleeve pipe rear portion, waste residue is discharged again, in order to avoid waste residue drops on the crudy that affects internal thread on the internal thread processed.
The aperture of the interior cylindrical hole of waste residue collection sleeve pipe and the difference of cutter shaft outside dimension are the 30-50 millimeter, both guaranteed waste residue gathering-device and the cutter shaft processed prestressed reinforced concrete hollow pile inner via hole of turnover smoothly, complete the processing operation of internal thread, guaranteed that again waste residue flows between waste residue collection sleeve pipe and cutter shaft smooth and easy, unlikely obstruction.
Advantage of the present utility model: the present invention is simple in structure, after adopting the present invention, prestressed reinforced concrete hollow pile internal thread machining efficiency is high, machining accuracy is controlled, can be according to the size of different prestressed reinforced concrete hollow pile internal threads, adjust easily upper-lower position and the gait of march of cutter, convenient maintenance.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment mono-.
The A of the upper machine body that Fig. 2 is the utility model embodiment mono-is to view.
The top view that Fig. 3 is the utility model embodiment mono-.
The structural representation that Fig. 4 is the utility model embodiment bis-.
The B that Fig. 5 is Fig. 4 is to view.
The top view that Fig. 6 is the utility model embodiment bis-.
The C-C profile that Fig. 7 is Fig. 6.
Working state figure when Fig. 8 is the utility model processing operation.
The D-D profile that Fig. 9 is Fig. 7.
In figure: the 1--cutter head; The 2--cutter shaft; 3--cutter shaft connecting plate; The 4--wallboard; The 5--adjustment disk; The 6--nut; 7--adjusts screw rod; The 8--upper machine body; The 9--pull bar; The 10--retreat stop block; The 11--lower body; The 12--stage clip; The 13--wheel; 14--worm gear piece; 15--drives worm screw; The 16--work top; 17--cutter shaft axle sleeve; The 18--chute; The 19--side plate; The 20--water inlet pipe; 21--takes on lattice; 22--takes on lattice; The 23--residue outlet; 24--spells cap; The 25--waste residue is collected sleeve pipe; 26--retaining bearing; The 27--double-screw bolt; The 28--regulating handle; 29--moves fixture block; The 30--driving shaft; The 31--sprocket wheel; The 32--sprocket wheel; The 33--processing mold; The 34--elastic card; The 35--driving wheel.
The specific embodiment
Embodiment mono-: see Fig. 1, Fig. 2, Fig. 3.Embodiment mono-contains the body that can move relative to the processing mold 33 of processed prestressed reinforced concrete hollow pile, body is comprised of the upper machine body 8 of open design and the lower body 11 of case structure, upper machine body 8 is fixed on lower body 11, upper machine body 8 contains a wallboard 4 and two blocks of side plates 19, wallboard 4 is provided with chute 18, cutter shaft 2 is fixedly mounted on cutter shaft connecting plate 3 by cutter shaft axle sleeve 17, cutter head 1 has been installed on cutter shaft 2, the cutter shaft outside dimension may be selected to be 1/3 of processed prestressed reinforced concrete hollow pile center cylindrical hole aperture, may be selected to be 1/2, may be selected to be 3/5, wallboard 4 is flexibly connected by the chute 18 on wallboard 4 with cutter shaft connecting plate 3, cutter shaft connecting plate 3 tops are fixedly connected with adjustment screw rod 7 lower ends, adjusting screw rod 7 is connected with the nut 6 that is fixed on wallboard 4 tops, adjust the top of screw rod 7 adjustment disk 5 has been installed, the bottom of lower body 11 and wheel 13 are flexibly connected, wheel 13 contacts with work top 16, on work top 16, driving worm screw 15 has been installed in activity, lower body 11 top movable have been installed the worm gear block mechanism, the worm gear block mechanism contains worm gear piece 14, pull bar 9, stage clip 12, worm gear piece 14 is fixedly connected with pull bar 9, be provided with retreat stop block 10 on pull bar 9, stage clip 12 is arranged between worm gear piece 14 and lower body 11 upper inner, drive worm screw 15 to drive the worm gear block mechanism, the worm gear block mechanism drives lower body 11 and makes back and forth movement, drive worm screw 15 directly to be connected with the driving shaft 30 of the processing mold 33 that drives the prestressed reinforced concrete hollow pile, during work, the elastic reaction of the pressured spring 12 of worm gear piece 14 is stuck in and drives on worm screw 15, by driving worm screw 15 to drive worm gear piece 14 and driving lower body 11 motions, while quitting work, upwards pull pull bar 9, the retreat stop block 10 on pull bar 9 is stuck on the upper plane of lower machine 11 bodies, stage clip 12 is compressed, and worm gear piece 14 breaks away from driving worm screw 15.
Added man-hour at the internal thread to the prestressed reinforced concrete hollow pile, cutter shaft 2 is positioned at the upper medium position of prestressed reinforced concrete hollow pile cylindrical hole, drive worm screw 15 to drive body close to processing mold 33 directions of prestressed reinforced concrete hollow pile, make cutter shaft 2 enter processed prestressed reinforced concrete hollow pile inner chamber, cutter head 1 on cutter shaft 2 is positioned at the original position of processed prestressed reinforced concrete hollow pile internal thread, close the power source of driving shaft 30, the thread degree of depth according to processed prestressed reinforced concrete hollow pile internal thread, regulate the adjustment disk 5 of adjusting screw rod 7 tops, cutter head 1 on cutter shaft 2 is adjusted to thread working depth position, the power source of starting driving shaft 30, the driving shaft 30 of the processing mold of prestressed reinforced concrete hollow pile drives worm screw 15 to rotate, drive worm screw 15 to drive the worm gear block mechanism, and drive lower body 11 moves, cutter shaft 2 carries out machining at prestressed reinforced concrete hollow pile inner chamber, after the internal thread machining of prestressed reinforced concrete hollow pile inner chamber, close the power source of driving shaft 30, regulate the adjustment disk 5 of adjusting screw rod 7 tops, cutter head 1 on cutter shaft 2 is exited to Working position, the power source of back-to-back starting driving shaft 30 again, make cutter shaft 2 get back to initial state.
On the basis of embodiment mono-, the waste residue gathering-device is installed on cutter shaft 2 and is formed another embodiment.
Embodiment bis-: see Fig. 4, Fig. 5, Fig. 6, Fig. 7.Embodiment bis-contains the body that can move relative to the processing mold 33 of processed prestressed reinforced concrete hollow pile, body is comprised of the upper machine body 8 of open design and the lower body 11 of case structure, upper machine body 8 is fixed on lower body 11, upper machine body 8 contains a wallboard 4 and two blocks of side plates 19, wallboard 4 is provided with chute 18, cutter shaft 2 is fixedly mounted on cutter shaft connecting plate 3, cutter head 1 has been installed on cutter shaft 2, wallboard 4 is flexibly connected by the chute 18 on wallboard 4 with cutter shaft connecting plate 3, fixedly mounted cutter shaft axle sleeve 17 on cutter shaft connecting plate 3, be provided with retaining bearing 26 between the shoulder lattice 22 of cutter shaft axle sleeve 17 and cutter shaft 2, cutter shaft axle sleeve 17 outsides that are positioned at cutter shaft 2 axle heads are equipped with spells cap 24, regulating handle 28 has been installed in cutter shaft 2 rear end activities, one end of cutter shaft 2 rear ends and regulating handle 28 is flexibly connected by pin, the other end of regulating handle 28 is stuck in the elastic card 34 on the mobile fixture block 29 on double-screw bolt 27, double-screw bolt 27 is fixed on body, cutter shaft 2 is provided with shoulder lattice 21, the end that the waste residue of waste residue gathering-device is collected sleeve pipe 25 is fixed on shoulder lattice 21, the aperture of the interior cylindrical hole of waste residue collection sleeve pipe 25 and the difference of cutter shaft outside dimension may be selected to be 30 millimeters, may be selected to be 70 millimeters, may be selected to be 100 millimeters, waste residue is collected sleeve pipe 25 and is provided with waste residue acquisition port 34, waste residue acquisition port 34 is positioned at cutter head 1 periphery on cutter shaft 2, waste residue is collected on sleeve pipe 25 and also is provided with water inlet pipe 20 and residue outlet 23, the water inlet of water inlet pipe 20 is positioned at the front end that waste residue is collected sleeve pipe 25, after waste residue enters waste residue collection sleeve pipe 25, water by the ejection of the water inlet of water inlet pipe 20 is flushed to the rear portion that waste residue is collected sleeve pipe 25, by the residue outlet 23 that is arranged on waste residue collection sleeve pipe 25 rear portions, waste residue is discharged again, cutter shaft connecting plate 3 tops are fixedly connected with adjustment screw rod 7 lower ends, adjusting screw rod 7 is connected with the nut 6 that is fixed on wallboard 4 tops, adjust the top of screw rod 7 adjustment disk 5 has been installed, the bottom of lower body 11 and wheel 13 are flexibly connected, wheel 13 contacts with work top 16, on work top 15, driving worm screw 15 has been installed in activity, lower body 11 top movable have been installed the worm gear block mechanism, the worm gear block mechanism contains worm gear piece 14, pull bar 9, stage clip 12, worm gear piece 14 is fixedly connected with pull bar 9, be provided with retreat stop block 10 on pull bar 9, stage clip 12 is arranged between worm gear piece 14 and lower body 11 upper inner, drive worm screw 15 to drive worm gear piece 14 and drive lower body 11 and make back and forth movement, drive screw 15 is connected with the driving shaft 30 of the processing mold 33 that drives the prestressed reinforced concrete hollow pile by chain wheel pair, as the prestressed reinforced concrete hollow pile that needs machining internal thread is of a size of 400 * 400 millimeters, being arranged on the sprocket wheel 31 driven on worm screw 15 is 36 teeth, and the sprocket wheel 32 be arranged on driving shaft 30 is 32 teeth, as the prestressed reinforced concrete hollow pile that needs machining internal thread is of a size of 500 * 500 millimeters, being arranged on the sprocket wheel 31 driven on worm screw 15 is 36 teeth, and the sprocket wheel 32 be arranged on driving shaft 30 is 22 teeth.During work, the elastic reaction of the pressured spring 12 of worm gear piece 14 is stuck in and drives on worm screw 15, by driving worm screw 15 to drive worm gear piece 14 and driving lower body 11 motions; While quitting work, upwards pull pull bar 9, the retreat stop block 10 on pull bar 9 is stuck on the upper plane of lower body 11, stage clip 12 is compressed, and worm gear piece 14 breaks away from driving worm screw 15.
Added man-hour at the internal thread to the prestressed reinforced concrete hollow pile, cutter shaft 2 is positioned at the upper medium position of prestressed reinforced concrete hollow pile cylindrical hole, before cutter shaft 2 does not enter processed prestressed reinforced concrete hollow pile inner chamber, the thread degree of depth according to processed prestressed reinforced concrete hollow pile internal thread, cutter head 1 on cutter shaft 2 is adjusted to Working position, rotate again the regulating handle 28 be flexibly connected with cutter shaft 2 rear ends, cutter shaft 2 is turned an angle, make the axle side direction of cutter head 1 in cutter shaft 2 on cutter shaft 2, make cutter head 1 on cutter shaft 2 avoid the inwall on the top of processed prestressed reinforced concrete hollow pile inner chamber, startup power supply, drive the driving shaft 30 of the processing mold 33 of prestressed reinforced concrete hollow pile to rotate, driving shaft 30 is by sprocket wheel 32, sprocket wheel 31 drives worm screw 15, drive worm screw 15 to drive the worm gear block mechanism, and drive lower body 11 moves, body is close to processing mold 33 directions of prestressed reinforced concrete hollow pile, make cutter shaft 2 enter processed prestressed reinforced concrete hollow pile inner chamber, cutter head 1 on cutter shaft 2 is positioned at the original position of processed prestressed reinforced concrete hollow pile internal thread, close the power source of driving shaft 30, rotate backward again regulating handle 28, make the inwall on the cutter head 1 embedding processed prestressed reinforced concrete hollow pile inner chamber top on cutter shaft 2, initial state in processing, regulating handle 28 is fixed on the mobile fixture block 29 on double-screw bolt 27 again, make cutter shaft 2 circumferential positions also corresponding fixing, prevent cutter shaft 2 circuit oscillations, effectively guaranteed the thread machining accuracy of internal thread, again start the power source of driving shaft 30, the driving shaft 30 of the processing mold 33 of prestressed reinforced concrete hollow pile drives worm screw 15 to rotate, drive worm screw 15 to drive the worm gear block mechanism, and drive lower body 11 motions, cutter shaft 2 carries out machining at prestressed reinforced concrete hollow pile inner chamber, after the internal thread machining of prestressed reinforced concrete hollow pile inner chamber, close the power source of driving shaft 30, regulate the adjustment disk 5 of adjusting screw rod 7 tops, cutter head 1 on cutter shaft 2 is exited to Working position, the power source of back-to-back starting driving shaft 30 again, make cutter shaft 2 get back to initial state.
On the basis of embodiment bis-, remove regulating handle 28, cutter shaft 2 is fixedly mounted on cutter shaft connecting plate 3 and forms another embodiment.
The duty of the embodiment of the present invention: see Fig. 8, Fig. 9.The processing mold 33 of prestressed reinforced concrete hollow pile is placed on two driving wheels 35 that driven by driving shaft 30, driving shaft 30 drives the processing mold 33 of prestressed reinforced concrete hollow pile to rotate, simultaneously, driving shaft 30 drives drive screw 15 to rotate by chain wheel pair.
Claims (9)
1. prestressed reinforced concrete hollow pile internal thread machining equipment, it is characterized in that containing the body that can move relative to the processing mold of processed prestressed reinforced concrete hollow pile, the processing mold of body and processed prestressed reinforced concrete hollow pile is by same drive shaft, the cutter shaft adjustable with the body relative position has been installed on body, and cutter shaft is provided with cutter head.
2. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 1, is characterized in that the cutter shaft outside dimension is 1/3 to 3/5 of processed prestressed reinforced concrete hollow pile center cylindrical hole aperture.
3. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 1, it is characterized in that on body being connected with worm gear, worm gear, by driving worm drive, drives the drive shaft of worm screw by the processing mold that drives processed prestressed reinforced concrete hollow pile.
4. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 3, it is characterized in that driving between the driving shaft of processing mold of worm screw and processed prestressed reinforced concrete hollow pile being provided with gear, the processing mold of the driving wheel of gear and the speed ratio of follower and processed prestressed reinforced concrete hollow pile and the speed ratio of processing mold driving wheel are corresponding.
5. according to the described prestressed reinforced concrete hollow pile of claim 1 or 4 internal thread machining equipment, it is characterized in that on cutter shaft being fixedly connected with the adjustment screw rod of adjusting the cutter shaft upper-lower position, adjust screw rod and body and be flexibly connected.
6. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 5, is characterized in that an end of cutter shaft and an end of the adjustment handle of adjusting the cutter shaft circumferential position are flexibly connected, and the other end and the body of adjusting handle are flexibly connected.
7. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 1, is characterized in that on cutter shaft being fixedly connected with the waste residue gathering-device.
8. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 7, it is characterized in that the waste residue gathering-device contains waste residue and collects sleeve pipe, waste residue is collected sleeve pipe and is fixed on cutter shaft, waste residue is collected sleeve pipe and is provided with the waste residue acquisition port, the waste residue acquisition port is positioned at the cutter head periphery on cutter shaft, waste residue is collected on sleeve pipe and also is provided with water inlet pipe and residue outlet, and the water inlet of water inlet pipe is positioned at the front end that waste residue is collected sleeve pipe, and residue outlet is arranged on waste residue and collects the sleeve pipe rear portion.
9. prestressed reinforced concrete hollow pile internal thread machining equipment according to claim 8, is characterized in that waste residue is collected the aperture of interior cylindrical hole of sleeve pipe and the difference of cutter shaft outside dimension is the 30-50 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200371017U CN203317520U (en) | 2013-01-24 | 2013-01-24 | Internal thread machining equipment for prestressed reinforced concrete hollow pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200371017U CN203317520U (en) | 2013-01-24 | 2013-01-24 | Internal thread machining equipment for prestressed reinforced concrete hollow pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203317520U true CN203317520U (en) | 2013-12-04 |
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ID=49656911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200371017U Withdrawn - After Issue CN203317520U (en) | 2013-01-24 | 2013-01-24 | Internal thread machining equipment for prestressed reinforced concrete hollow pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203317520U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112091A (en) * | 2013-01-24 | 2013-05-22 | 盐城市双强管桩有限公司 | Machining device of prestressed reinforced concrete hollow pile internal threads |
| CN104563096A (en) * | 2014-11-12 | 2015-04-29 | 南通中技桩业有限公司 | Inner wall knurling pile and knurling equipment |
-
2013
- 2013-01-24 CN CN2013200371017U patent/CN203317520U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112091A (en) * | 2013-01-24 | 2013-05-22 | 盐城市双强管桩有限公司 | Machining device of prestressed reinforced concrete hollow pile internal threads |
| CN104563096A (en) * | 2014-11-12 | 2015-04-29 | 南通中技桩业有限公司 | Inner wall knurling pile and knurling equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131204 Effective date of abandoning: 20140521 |
|
| RGAV | Abandon patent right to avoid regrant |