CN103433812A - Device capable of machining two ends of workpiece synchronously - Google Patents
Device capable of machining two ends of workpiece synchronously Download PDFInfo
- Publication number
- CN103433812A CN103433812A CN2013103717810A CN201310371781A CN103433812A CN 103433812 A CN103433812 A CN 103433812A CN 2013103717810 A CN2013103717810 A CN 2013103717810A CN 201310371781 A CN201310371781 A CN 201310371781A CN 103433812 A CN103433812 A CN 103433812A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- hand rotation
- cylinder
- moving axis
- rotation moving
- 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.)
- Pending
Links
Images
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a device capable of machining the two ends of a workpiece synchronously and belongs to the field of machining. The device comprises a rack (1), a feeding device, a clamp device and a punching device. The feeding device comprises a material holding platform (2), an air cylinder (3a) is arranged at one end of the material holding platform (2), and a feeding channel (5) is arranged at the other end of the material holding platform (2). The clamp device comprises a transversely-moving platen (7), an air cylinder (3c) is arranged at one end of the transversely-moving platen (7), a fixed clamping plate (9) is arranged at the other end of the transversely-moving platen (7), a movable clamping plate (10) is arranged matched with the fixed clamping plate (9), and clamping grooves (11) are formed in corresponding positions of the fixed clamping plate (9) and the movable clamping plate (10). The punching device comprises a left rotating shaft (12a) and a right rotating shaft (12b), a locking nozzle (16a) is arranged at one end of the left rotating shaft (12a), and a locking nozzle (16b) is arranged at one end of the right rotating shaft (12b). According to the device, tools at the two ends of the workpiece are used for machining the workpiece synchronously, and therefore the workpiece can be formed at a time; the device can improve production efficiency and meet various workpiece machining demands.
Description
Technical field
The invention belongs to field of machining, specifically, relate to a kind of workpiece two ends synchronous processing device.
Background technology
Turning processing is one of processing method be most widely used in machining process, the application method for turning can be processed various revolving body surfaces externally and internallies, as inside and outside circle cylinder, taper seat, various internal and external threads etc., adopt corresponding cutter and annex, also can be holed, tapping and annular knurl etc., be the main method of working shaft-like, disk cover parts.Traditional method for turning, all to utilize lathe processing, use the chuck holding workpiece, utilize the cutters such as drill bit that are arranged on tailstock to processing such as workpiece punch, utilize this method, can only be processed an end of workpiece at every turn, if the other end to workpiece is processed, must take off workpiece, again use the chuck holding workpiece, process for the second time, so just affect production efficiency.
Summary of the invention
The technical problem to be solved in the present invention is to eliminate the problem that can not simultaneously process the workpiece two ends in prior art, and a kind of workpiece two ends synchronous processing device that can simultaneously process the workpiece two ends is provided.
In order to solve the problems of the technologies described above, the invention provides a kind of workpiece two ends synchronous processing device, comprise frame, feed arrangement is set on frame, arrange grip device corresponding with feed arrangement, match perforating device is set with grip device, this feed arrangement comprises the blowing platform, at blowing platform one end, cylinder is set, and at the other end of blowing platform, feeding-passage is set, a side at feeding-passage arranges cylinder, and the push rod of this cylinder and feeding-passage are arranged on same axis; This grip device comprises traversing platen, and traversing platen is slidably connected on base plate, at traversing platen one end, cylinder is set, and the other end arranges strap, with strap, matches ambulatory splint is set, and strap and ambulatory splint opposite position arrange clamping slot; This perforating device comprises can drive the first motor that the left-hand rotation moving axis rotates, and can drive the second motor that the right-hand rotation moving axis rotates, and at an end of left-hand rotation moving axis, the lock mouth is set, and at an end of right-hand rotation moving axis, the lock mouth is set.
Above-mentioned workpiece two ends synchronous processing device, the axis of this clamping slot initial position and feeding-passage axis are arranged on same axis.
Above-mentioned workpiece two ends synchronous processing device arranges groove on base plate, and described traversing platen is arranged in groove, can make so traversing platen slide on base plate.
As another kind of embodiment, above-mentioned workpiece two ends synchronous processing device arranges slide rail on base plate, and described traversing platen is arranged on slide rail, so also can make traversing platen slide on base plate.
Above-mentioned workpiece two ends synchronous processing device arranges fulcrum on strap, and this ambulatory splint is connected with strap by fulcrum.
Above-mentioned workpiece two ends synchronous processing device arranges cylinder on the strap of described fulcrum one side, between fulcrum and cylinder, spring is set, and can make like this ambulatory splint do relative motion around fulcrum and strap.
Above-mentioned workpiece two ends synchronous processing device, the axis of the axis of this left-hand rotation moving axis and right-hand rotation moving axis is arranged on same straight line, can make like this perforating device workpiece be processed at the workpiece two ends simultaneously.
Above-mentioned workpiece two ends synchronous processing device, can promote left-hand rotation moving axis one end setting the cylinder that the left-hand rotation moving axis moves, can promote right-hand rotation moving axis one end setting the cylinder that the right-hand rotation moving axis moves, the cylinder of this setting can make moving axis and right-hand rotation moving axis to feed motion.
The beneficial effect of above-mentioned workpiece two ends synchronous processing device is: owing to utilizing feed arrangement, grip device and perforating device, can replace manual operations, to reach the purpose of automatic acquisition workpiece, automatic place work piece and automated machining of workpieces, simultaneously because the cutter that utilizes the workpiece two ends is processed workpiece simultaneously, make the workpiece one-shot forming, can enhance productivity; Because the present invention can utilize different cutters, workpiece is punched, car circle, tapping, chamfering and jet-bedding etc., so can be applicable to the needs of various workpiece processing.
The accompanying drawing explanation
Fig. 1 is one of structural representation of the present invention.
Fig. 2 is two of structural representation of the present invention.
Fig. 3 is top view of the present invention.
The structure enlarged diagram that Fig. 4 is grip device in the present invention.
Drawing reference numeral explanation: 1-frame, 2-blowing platform, ( 3a 3b 3c 3d 3e 3f)-cylinder, (4 a 4 b)-ejecting rod of cylinder, 5-feeding-passage, the traversing platen of 6-, 7-base plate, 8-strap, 9-ambulatory splint, 10-clamping slot, 11a-left-hand rotation moving axis, 11b-right-hand rotation moving axis, 12a the first motor, 12b-the second motor, 13-fulcrum, 14-spring, (15a 15b)-lock mouth.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Workpiece two ends synchronous processing device as shown in Figure 1, Figure 3, comprise frame 1, feed arrangement, grip device and perforating device, this feed arrangement comprises blowing platform 2, at blowing platform 2 one ends, cylinder 3a is set, the other end of blowing platform 2 arranges feeding-passage 5, this feeding-passage 5 can be set to groove, a side at feeding-passage 5 arranges cylinder 3b, cylinder 3b front end is ejecting rod of cylinder 4 b, this ejecting rod of cylinder 4 b and feeding-passage 5 are arranged on same axis, when cylinder 3b inflates, this ejecting rod of cylinder 4 b can push the workpiece in feeding-passage 5.
As shown in Figure 1, Figure 2, Figure 3 shows, this grip device comprises traversing platen 6, and this traversing platen 6 is slidably connected on base plate 7, can on base plate 7, move, as a kind of embodiment, this base plate 7 can be set to groove, traversing platen 6 is arranged in groove, and can in groove, slide.As another embodiment, on this base plate 7, slide rail can be set, this slide rail can be set to two parallel slide rails, and traversing platen 6 is arranged on slide rail, and can on slide rail, slide.
As Fig. 1, Fig. 3, shown in Fig. 4, these traversing platen 6 one ends arrange cylinder 3c, the other end arranges strap 8, match ambulatory splint 9 is set with strap 8, fulcrum 13 is set on strap 8, this ambulatory splint 9 is flexibly connected by fulcrum 13 and strap 8, on the strap 8 of fulcrum 13 1 sides, cylinder 3d is set, the push rod of cylinder 3d contacts with ambulatory splint 9 through strap, between fulcrum 13 and cylinder 3d, spring 14 is set, spring 14 two ends are connected with ambulatory splint 9 with strap 8 respectively, at strap 8 and ambulatory splint 9 opposite positions, clamping slot 10 is set, when cylinder 3d qi of chong channel ascending adversely, the push rod of cylinder 3d promotes the upper end of ambulatory splint 9, ambulatory splint 9 is around fulcrum 13 motions, the lower end clamping slot 10 of ambulatory splint 9 is clamped, when cylinder 3d venting, the push rod retraction, at this moment spring 14 is because elastical retraction makes ambulatory splint 9 upper ends near strap 8, and at this moment strap 8 is left in ambulatory splint 9 lower ends, and clamping slot 10 opens, and can decontrol workpiece.
As shown in Figure 1, Figure 3, when traversing platen 6, during at initial position, these clamping slot 10 axis and feeding-passage 5 axis are arranged on same axis, can make like this workpiece in feeding-passage 5 enter in clamping slot 10 under the promotion of feeding cylinder push rod 4 b.
As shown in Figure 1, Figure 2, Figure 3 shows, this perforating device comprises the first motor 12a that can drive left-hand rotation moving axis 11a and rotate, can drive the second motor 12b that right-hand rotation moving axis 11b rotates, at the end of left-hand rotation moving axis 11a, lock mouth 15a is set, at the end of right-hand rotation moving axis 11b, lock mouth 15b is set, can the first-class cutter of installing drill on lock mouth 15a, 15b; At left-hand rotation moving axis 11a mono-end, cylinder 3e is set, can make moving axis 11a to feed motion, at right-hand rotation moving axis 11b mono-end, cylinder 3f is set, the moving axis 11b that can make to turn right feeds motion, the axis of the axis of left-hand rotation moving axis 11a and right-hand rotation moving axis 11b is arranged on same straight line, can make like this perforating device workpiece be processed at the workpiece two ends simultaneously.
Below take and punched as example in the workpiece two ends simultaneously, use procedure is described: during use, on frame 1, vibrating disk is set, first workpiece is put into to vibrating disk, utilize the vibrating disk vibration, workpiece is transported on blowing platform 2 in order, the cylinder 3a work that blowing platform 2 one ends arrange, the push rod 4 of cylinder 3a is delivered to workpiece in the feeding-passage 4 of blowing platform 2 other ends, at this moment cylinder 3b work, ejecting rod of cylinder 4 b are pushed to workpiece in the clamping slot 10 of grip device, at this moment the cylinder 3d qi of chong channel ascending adversely on strap 8, pushing ambulatory splint 9, ambulatory splint 9 rotates around fulcrum 13, make ambulatory splint 9 clamping work pieces, then, cylinder 3c work, the push rod of cylinder 3c promotes traversing platen 6, traversing platen 6 is moved, when the axis of the axis of workpiece centre axle and left-hand rotation moving axis 11a and right-hand rotation moving axis 11b on same straight line, traversing platen 6 stops mobile, at this moment the first motor 12a, the second motor 12b works simultaneously, driving left-hand rotation moving axis 11a and right-hand rotation moving axis 11b rotates, drive lock mouth 15a simultaneously, drill bit on 15b rotates, then cylinder 3e qi of chong channel ascending adversely, promoting left-hand rotation moving axis 11a moves right, cylinder 3f qi of chong channel ascending adversely, promoting right-hand rotation moving axis 11b is moved to the left, to the workpiece direction, move simultaneously, make to lock mouth 15a, drill bit on 15b is near workpiece, so that workpiece is carried out to punch operation.After punching completes, cylinder 3e, cylinder 3f venting, left-hand rotation moving axis 11a and right-hand rotation moving axis 11b set back; At this moment cylinder 3d venting, the push rod of cylinder 3d is retracted, spring 14, due to elastical retraction, makes the ambulatory splint 9 of fulcrum 13 tops near strap 8, so the ambulatory splint 9 at clip groove 10 positions leaves strap 8, clip groove 10 is opened, workpiece is fallen in accumulator tank, then cylinder 3c venting, traversing platen 6 is return original position, so circulate, reach the purpose at automated machining of workpieces two ends.
If the lock mouth 15b on the lock mouth 15a on left-hand rotation moving axis 11a and right-hand rotation moving axis 11b installs different cutters, just can carry out to the workpiece two ends operations such as chamfering, car circle, fluting simultaneously.
Use the present invention, implement automatic feed, blowing, to processes such as the workpiece two ends process simultaneously, accurate positioning, high efficiency, can be punched to workpiece, the operations such as chamfering, car circle, fluting, has wide range of applications, and low cost of manufacture.
The above is explained in detail embodiment of the present invention by reference to the accompanying drawings; but the present invention is not limited to above-mentioned embodiment; to those skilled in the art, can also do under the premise of not departing from the present invention some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
Claims (8)
1. a workpiece two ends synchronous processing device, comprise frame (1), it is characterized in that: on described frame (1), feed arrangement is set, arrange grip device corresponding with described feed arrangement, match perforating device is set with described grip device, described feed arrangement comprises blowing platform (2), described blowing platform (2) one ends arrange cylinder (3a), the other end of blowing platform (2) arranges feeding-passage (5), a side at feeding-passage (5) arranges cylinder (3b), the push rod (6) of described cylinder (3b) is arranged on same axis with feeding-passage (5), described grip device comprises traversing platen (6), described traversing platen (6) is slidably connected on base plate (7), described traversing platen (6) one ends arrange cylinder (3c), the other end arranges strap (8), match ambulatory splint (9) is set with described strap (8), described strap (8) arranges clamping slot (10) with ambulatory splint (9) opposite position, described perforating device comprises can drive the motor (12a) that left-hand rotation moving axis (11a) rotates, can drive the motor (12b) that right-hand rotation moving axis (11b) rotates, one end of described left-hand rotation moving axis (11a) arranges lock mouth (15a), and an end of described right-hand rotation moving axis (11b) arranges lock mouth (15b).
2. workpiece according to claim 1 two ends synchronous processing device, it is characterized in that: the axis of described clamping slot (10) initial position and feeding-passage (5) axis are arranged on same axis.
3. workpiece according to claim 1 two ends synchronous processing device, it is characterized in that: described base plate (7) arranges groove, and described traversing platen (6) is arranged in groove.
4. according to the described workpiece of claim 1 two ends synchronous processing device, it is characterized in that: described base plate arranges slide rail on (7), and described traversing platen (6) is arranged on slide rail.
5. workpiece according to claim 1 two ends synchronous processing device, it is characterized in that: fulcrum (13) is set on described strap (8), and described ambulatory splint (9) is connected with strap (8) by fulcrum (13).
6. workpiece according to claim 5 two ends synchronous processing device, it is characterized in that: on the strap (8) of described fulcrum (13) one sides, cylinder (3d) is set, between described fulcrum (13) and cylinder (3d), spring (14) is set.
7. according to the described workpiece of claim 1 two ends synchronous processing device, it is characterized in that: the axis of the axis of described left-hand rotation moving axis (11a) and right-hand rotation moving axis (11b) is on same straight line.
8. according to the described workpiece of claim 1 two ends synchronous processing device, it is characterized in that: can promote the mobile cylinder (3e) of left-hand rotation moving axis (11a) described left-hand rotation moving axis (11a) end setting, described right-hand rotation moving axis (11b) end setting, can promote the mobile cylinder (3f) of right-hand rotation moving axis (11b).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2013103717810A CN103433812A (en) | 2013-08-23 | 2013-08-23 | Device capable of machining two ends of workpiece synchronously |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2013103717810A CN103433812A (en) | 2013-08-23 | 2013-08-23 | Device capable of machining two ends of workpiece synchronously |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103433812A true CN103433812A (en) | 2013-12-11 |
Family
ID=49687576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2013103717810A Pending CN103433812A (en) | 2013-08-23 | 2013-08-23 | Device capable of machining two ends of workpiece synchronously |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103433812A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103692181A (en) * | 2013-12-17 | 2014-04-02 | 苏州博众精工科技有限公司 | Pressure meter seat moving mechanism |
CN104174875A (en) * | 2014-08-22 | 2014-12-03 | 宁波铝宏汽车零部件有限公司 | Gearbox gear shaft chamfering and forming device |
CN104723128A (en) * | 2013-12-23 | 2015-06-24 | 上海国上机电科技有限公司 | Device for machining small plane of left lock-hook of automobile fifth-wheel part |
CN107498070A (en) * | 2017-09-20 | 2017-12-22 | 淄博市技师学院 | A kind of multistation multi-functional mechanical lathe for machining |
CN113000899A (en) * | 2021-03-18 | 2021-06-22 | 郭文 | Spare part drilling equipment is used in new energy automobile production |
CN113000944A (en) * | 2021-03-18 | 2021-06-22 | 汪闰 | Automatic processing equipment for automobile steering rocker arm |
CN113601131A (en) * | 2021-08-09 | 2021-11-05 | 湖北唯思凌科装备制造有限公司 | Assembling device for cradle body and plastic part of spinning frame |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3618633A1 (en) * | 1986-06-03 | 1987-12-10 | Benteler Werke Ag | MULTI-SPINDLE DRILLING HEAD FOR DRILLING GLASS PANELS OR PANELS FROM SIMILAR, BREAK-SENSITIVE MATERIAL |
EP0400284A2 (en) * | 1989-05-30 | 1990-12-05 | The Boeing Company | Automated drilling station |
CN201140286Y (en) * | 2007-12-18 | 2008-10-29 | 庄添财 | Front down pipe boring chamfering machine |
CN201405091Y (en) * | 2009-04-24 | 2010-02-17 | 常州沃伦精密机械制造有限公司 | Two-shaft linkage milling and drilling device |
CN101797655A (en) * | 2010-02-09 | 2010-08-11 | 温岭市精仁机械有限公司 | Two-way digital control perforating machine |
CN202344297U (en) * | 2011-10-25 | 2012-07-25 | 德利赉精密五金制品(深圳)有限公司 | Machining clamp and automatic chamfering machine |
CN202894399U (en) * | 2012-11-02 | 2013-04-24 | 海南丰兴精密产业股份有限公司 | Shaft two-way punching machine |
CN203390660U (en) * | 2013-08-23 | 2014-01-15 | 浙江盛业自动化科技有限公司 | Device for synchronously machining two ends of workpiece |
-
2013
- 2013-08-23 CN CN2013103717810A patent/CN103433812A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3618633A1 (en) * | 1986-06-03 | 1987-12-10 | Benteler Werke Ag | MULTI-SPINDLE DRILLING HEAD FOR DRILLING GLASS PANELS OR PANELS FROM SIMILAR, BREAK-SENSITIVE MATERIAL |
EP0400284A2 (en) * | 1989-05-30 | 1990-12-05 | The Boeing Company | Automated drilling station |
CN201140286Y (en) * | 2007-12-18 | 2008-10-29 | 庄添财 | Front down pipe boring chamfering machine |
CN201405091Y (en) * | 2009-04-24 | 2010-02-17 | 常州沃伦精密机械制造有限公司 | Two-shaft linkage milling and drilling device |
CN101797655A (en) * | 2010-02-09 | 2010-08-11 | 温岭市精仁机械有限公司 | Two-way digital control perforating machine |
CN202344297U (en) * | 2011-10-25 | 2012-07-25 | 德利赉精密五金制品(深圳)有限公司 | Machining clamp and automatic chamfering machine |
CN202894399U (en) * | 2012-11-02 | 2013-04-24 | 海南丰兴精密产业股份有限公司 | Shaft two-way punching machine |
CN203390660U (en) * | 2013-08-23 | 2014-01-15 | 浙江盛业自动化科技有限公司 | Device for synchronously machining two ends of workpiece |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103692181A (en) * | 2013-12-17 | 2014-04-02 | 苏州博众精工科技有限公司 | Pressure meter seat moving mechanism |
CN103692181B (en) * | 2013-12-17 | 2016-04-06 | 苏州博众精工科技有限公司 | A kind of pressure gauge base travel mechanism |
CN104723128A (en) * | 2013-12-23 | 2015-06-24 | 上海国上机电科技有限公司 | Device for machining small plane of left lock-hook of automobile fifth-wheel part |
CN104174875A (en) * | 2014-08-22 | 2014-12-03 | 宁波铝宏汽车零部件有限公司 | Gearbox gear shaft chamfering and forming device |
CN104174875B (en) * | 2014-08-22 | 2016-12-07 | 宁波铝宏汽车零部件有限公司 | Change speed gear box gear axle flat head chamfering shaped device |
CN107498070A (en) * | 2017-09-20 | 2017-12-22 | 淄博市技师学院 | A kind of multistation multi-functional mechanical lathe for machining |
CN107498070B (en) * | 2017-09-20 | 2019-09-13 | 淄博市技师学院 | A kind of multistation multi-functional mechanical lathe for machining |
CN113000899A (en) * | 2021-03-18 | 2021-06-22 | 郭文 | Spare part drilling equipment is used in new energy automobile production |
CN113000944A (en) * | 2021-03-18 | 2021-06-22 | 汪闰 | Automatic processing equipment for automobile steering rocker arm |
CN113601131A (en) * | 2021-08-09 | 2021-11-05 | 湖北唯思凌科装备制造有限公司 | Assembling device for cradle body and plastic part of spinning frame |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103433812A (en) | Device capable of machining two ends of workpiece synchronously | |
CN203726136U (en) | Machine tool capable of automatically grooving, drilling and tapping | |
CN205968189U (en) | Cutting chamfer all -in -one | |
CN103386511B (en) | Automatic burr eliminator | |
CN204657587U (en) | A kind of edge milling machines | |
CN103213440A (en) | Automatic feeding and discharging mechanism of engraving and milling machine and feeding and discharging method | |
CN202963993U (en) | Multifunction numerical control turn-mill combination gear hobbing machine | |
CN106903514A (en) | A kind of process units of embedded air reservoir seal head | |
CN207402111U (en) | Automatic processing turning machine | |
CN105458708A (en) | Cutting and chamfering all-in-one machine for automobile air conditioner pipe components | |
CN104827296A (en) | Full-automatic machining tool punching center hole through saw | |
CN203390660U (en) | Device for synchronously machining two ends of workpiece | |
CN205201010U (en) | Vehicle air conditioner pipe fitting cutting chamfer all -in -one | |
CN204248471U (en) | Possesses the five-axle linked blade machining tool of workpiece automated exchanged cutter | |
CN203236086U (en) | Soldering lug feed device for diamond cutting tool welding machine | |
CN104354029A (en) | Five-axis linkage blade processing machine tool with automatic workpiece clamping function and clamping method of five-axis linkage blade processing machine tool | |
CN204711567U (en) | A kind of novel groove milling combined machine | |
CN206185507U (en) | Multitool lathe of formula of putting under cutter | |
CN104476193A (en) | Novel groove milling compound machine tool | |
WO2019006810A1 (en) | Numerically-controlled piston ring outer circle chamfering machine tool | |
CN203156461U (en) | Numerically-controlled machine tool for shaft sleeve type workpiece two-sided machining | |
CN203917931U (en) | Multifunctional numerical control lathe | |
CN106270688A (en) | A kind of diverter carbon plane automatic slot milling machine | |
CN107262737B (en) | Double-spindle handstand vehicle | |
CN104708526A (en) | Dual-feed oil cylinder for honing machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131211 |