CN104278600A - Portable grease lubrication impact packer - Google Patents
Portable grease lubrication impact packer Download PDFInfo
- Publication number
- CN104278600A CN104278600A CN201310293442.5A CN201310293442A CN104278600A CN 104278600 A CN104278600 A CN 104278600A CN 201310293442 A CN201310293442 A CN 201310293442A CN 104278600 A CN104278600 A CN 104278600A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- sliding sleeve
- internal combustion
- packer
- gear shaft
- 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
- 239000004519 grease Substances 0.000 title claims abstract description 31
- 238000005461 lubrication Methods 0.000 title claims abstract description 8
- 230000001050 lubricating effect Effects 0.000 claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000013036 cure process Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000004512 die casting Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 238000005056 compaction Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
- E01B27/12—Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast
- E01B27/20—Compacting the material of the track-carrying ballastway, e.g. by vibrating the track, by surface vibrators
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/12—Tamping devices
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to a portable internal combustion impact packer which is used for packing ballast when a railway is repaired. The portable internal combustion impact packer mainly consists of an engine, a speed changing box, an air cylinder, a lower packer body, a packer rod and a handrail, and is characterized in that the engine is installed on the speed changing box, a driving gear shaft and a driven crank gear shaft are installed in the speed changing box, and a crank linkage is installed on the driven crank gear shaft. A unique lubrication grease path is designed inside the driving gear shaft and the driven crank gear shaft. A drive piston which is driven by the crank linkage is installed in the upper part of the air cylinder, an impact piston is installed in the lower part of the air cylinder, and air holes in the middle part and the bottom of the air cylinder are communicated with the atmosphere. The lower packer body is installed on the lower part of the air cylinder, the packer rod is installed in the lower packer body, the packer rod is prevented by a locking steel ball and a slide sleeve from sliding out of the lower packer body, the handrail is installed on the packer body through a shock absorber. The portable internal compaction impact packer has advantages that both the impact power and main performance are equivalent to that of Vecoplan portable internal combustion impact packer, the weight is 9kg lighter than that of the Vecoplan portable internal combustion impact packer, and the lubricating system is obviously optimized.
Description
Technical field:
What the present invention relates to is the Portable internal combustion impact tamping pickaxe of making ballast aggregate in railway maintenance firm by ramming.
Background technology:
Often need in railway maintenance to make ballast aggregate firm by ramming.Make ballast aggregate at present firm by ramming to commonly use and large-scalely make train, light hydraulic tamping machine and portable internal combustion tamping pickaxe firm by ramming.Use large-scale train and the light hydraulic tamping machine of making firm by ramming to need to stop train operation, upper and lower road is also inconvenient, and particularly high-speed railway is all closed-loop at present, so portable internal combustion tamping pickaxe is used widely.
Portable internal combustion tamping pickaxe mainly contains bias and to impulse formula and impact type two kinds, and the bias formula tamping quality that impulses is poor, and fault rate is high, uses and is subject to a definite limitation.Portable internal combustion impact tamping pickaxe tamping quality is good, and failure rate is low is used widely.
Portable internal combustion impact tamping pickaxe uses widely mainly German Brunswick at present, and the lubrication of German Brunswick tamping pickaxe is grease lubrication, and do not have special lubricating grease oil circuit, therefore the fault rate of bearing, gear is higher.
Germany's Brunswick tamping pickaxe expensive, not in time, use cost is very high for fittings supply, and heavy 24 kilograms (not comprising pick rod), and labour intensity is larger.Therefore, development performance is the same with German Brunswick tamping pickaxe, and the domestic Portable internal combustion impact tamping pickaxe of failure rate is low has great justice meaning.
Summary of the invention:
The object of the invention is, provide a kind of novel portable internal combustion impact tamping pickaxe, its ballistic work is the same with German Brunswick tamping pickaxe with main performance, but lightweight, energy consumption is low, price is low, lubricating system is reliable, use cost is low, the life-span is longer.
Technical scheme of the present invention is:
This Portable internal combustion impact tamping pickaxe, forms primarily of motor, gearbox, cylinder, lower pick body, pick rod and handrail.
It is characterized in that: gearbox connects dish by motor motor is housed, gearbox is split type, is made up of left and right two halves, joins together with 5 screws.Left box body outside is provided with two grease adding mouths.In gearbox, driving gear shaft is equipped with on top, by pair bearings of two in gearbox body, there is the lubricating grease oil circuit of particular design the inside of driving gear shaft and driven crank gear axle, communicate with two grease adding mouths of left box body outside respectively, lubricating grease, by oil circuit, spreads all over each position of needs lubrication, to improve the application life of consumable accessory (bearing, gear).The clutch plate screw thread of centrifugal clutch is screwed in the left end of driving gear shaft, and driving gear shaft passes through centrifugal clutch transmission by motor.Bottom in reduction box, is equipped with driven crank gear axle, crank is equipped with connecting rod, and in the endoporus of connecting rod two ends, needle bearing is housed, the right-hand member of driven gear shaft is equipped with bearing and loads bearing support.
Cylinder 4 screws are fixed on the bottom of gearbox, and cylinder is integrated die casting aluminium, and endoporus adopts anodic oxidation cure process.
In cylinder block, under be drilled with two air vents, directly communicate with air, unobstructed with air-flow when ensureing pistons work, reduce the power consumption of motor.
Cylinder internal upper part is equipped with driven plunger, is driven by piston pin by connecting rod, and columned solid impact piston is equipped with in bottom, two pistons is all equipped with a pair reinforced TFE piston ring.
Lower pick body is equipped with in the bottom of cylinder, and lower pick body screw thread is directly connected with cylinder, between lining is housed.
Pick rod is contained in the hexagonal hole of lower pick body by six sides of upper end, and pick rod is pinned by six locking steel balls of lower pick body lower end and the sliding sleeve of outside and prevents from.Sliding sleeve is spacing by upper and lower spacing jump ring, is located by location jump ring.Location jump ring is enclosed within the groove in the outer garden of sliding sleeve, and has a tongue through sliding sleeve, inserts in the hole on lower pick body, makes sliding sleeve be locked in locked position.On lower pick body, the outward flange in hole has skewed slot, and when rotating sliding sleeve along skewed slot direction, the tongue of location jump ring will exit along skewed slot, sliding sleeve move, unclamp locking steel ball.
Motor, gearbox, cylinder and lower pick body join together.Handrail is contained on the bearing on cylinder top by damper and nut.Handrail is also equipped with rubber shock-absorbing grip.
Advantage of the present invention is:
1, its ballistic work is the same with German Brunswick tamping pickaxe with main performance.
2, German 2 kilowatts, Brunswick tamping pickaxe motor, 1.47 kilowatts, tamping pickaxe motor of the present invention, more fuel-efficient.
3, weight ratio Germany Brunswick tamping pickaxe is light 9 kilograms, significantly reduces labor intensity.
4, lubricating system is reliable, can continuous operation, and half a year is non-maintaining.
5, price is 1./2nds of German Brunswick tamping pickaxe
6, accessory domesticizes completely, and use cost Bhide state Brunswick tamping pickaxe is much lower.
The description of the drawings:
Accompanying drawing 1 is longitudinal sectional view of the present invention.
Accompanying drawing 2 is outward appearance right views of the present invention.
Accompanying drawing 3 is sectional views of pick rod of the present invention locking sliding sleeve location jump ring.
Detailed description of the invention:
With reference to accompanying drawing 1,2,3, preferred embodiments of the present invention is described.
Referring to accompanying drawing 1: the present invention primarily of motor 5, motor connect dish 3, left box body 12, right case 28, cylinder 31, lower pick body 35, locking steel ball 39,42, sliding sleeve 38, pick rod 40 and handrail 11 form.
Motor connects dish 3 screw 7 and is fixed on gearbox left box body 12, and motor 5 is fixed on motor with 4 screws and connects on dish 3.(screw 56,57 of accompanying drawing 2 please be see)
Gearbox is Split type structure, is divided into left box body 12 and right case 28, with 5 screw fastenings together.(please refer to the screw 14 of accompanying drawing 1, the screw 58,59,61,62 of accompanying drawing 2)
Referring to accompanying drawing 1: gearbox internal upper part is equipped with driving gear shaft 6, driving gear shaft 6 is supported by bearing 1 and 16.The inside of driving gear shaft 6 is provided with lubricating grease oil circuit 19, and driven crank gear axle 29 inside is provided with lubricating grease oil circuit 26, and supported by semiclosed ball bearing 27 and needle bearing 24, needle bearing 24 is contained in the bearing support of right case 28.The top of the lubricating grease oil circuit 19 of driving gear shaft 6 is equipped with press-fit forced filling oil cup 18 in right case 28 outside.The top of the lubricating grease oil circuit 26 of driven crank gear axle 29 is equipped with press-fit forced filling oil cup 22 in right case 28 outside.
When adding lubricating grease, first adding lubricating grease by press-fit forced filling oil cup 18, shunting in chamber 17, a part arrives catch 15 through bearing 16 and terminates.Another part is by lubricating grease oil circuit 19, and a part arrives the flank of tooth of gear shaft 6.Another part enters in chamber 2 and arrives catch 13 through bearing 1, and first time adds lubricating grease and terminates.Add lubricating grease by press-fit forced filling oil cup 22 again, shunt in chamber 23, a part arrives semiclosed ball bearing 27 through needle bearing 24 and terminates.Another part arrives catch 53,21 by lubricating grease oil circuit 26 and needle bearing 25 second time interpolation lubricating grease terminates.
The clutch plate 4 of clutch is screwed in the left end of driving gear shaft 6 with screw thread, driving gear shaft 6 is driven by motor 5.
The crank of driven crank gear axle 29 is equipped with connecting rod 20, and two stomidiums of connecting rod 20 are built with needle bearing 25 and 46.
Aperture anodic oxidation in cylinder 31, in its endoporus, top is equipped with and is driven words plug 52, and it is driven by piston pin 47 by connecting rod 20, and piston pin is by collar 30,50 spacing.Impact piston 32, two pistons that filled circles column is equipped with in bottom are all equipped with reinforced TFE piston ring 48,51 and 33,34.
In cylinder block 31, lower portion is drilled with 2 air vents 45,44.Directly communicate with air.Under have lining 43.The space that the oil storage tank 49 of cylinder 31 inwall and piston 52 is formed is filled with appropriate lubricating grease.Lower pick body 35 screw thread is directly connected with cylinder 29, between lining 43 is housed.
Pick rod 40 is inserted in the hexagonal hole of lower pick body 35 by six sides of upper end, and pick rod 40 is pinned by six locking steel balls 39,42 of lower pick body 35 lower end and the sliding sleeve 38 of outside and prevents from.Sliding sleeve is spacing by steel wire collar 36 and 41, and location jump ring 37 locking slides over locked position.
Referring to accompanying drawing 3: location jump ring 37 is enclosed within the groove of sliding sleeve 38 cylindrical, and there is a tongue 65 through sliding sleeve 38, insert in the hole 67 on lower pick body 35, make sliding sleeve 38 be locked in locked position.On lower pick body 35, the outward flange in hole 67 has skewed slot 66, and when rotating sliding sleeve 38 along skewed slot 66 direction, the tongue 65 of location jump ring 37 will exit along skewed slot 66, sliding sleeve 38 move, unscrew and locking functions to reach.
Referring to accompanying drawing 2: handrail 11 is contained on the bearing on cylinder 31 top by damper 8,60 and nut 10,55,63,64, handrail 11 is also equipped with rubber shock-absorbing grip 9,54.
Portable internal combustion impact tamping pickaxe operating principle of the present invention is:
Motor 5 is driven driven crank gear axle 29 to rotate by driving gear shaft 6, and is moved up and down by connecting rod 20 driven plunger 52 on crank after starting.To when pressing down tamping pickaxe, when driven plunger 52 moves upward, and pick rod 40 is in when making state firm by ramming, impact piston 32 place shown position.At this moment cylinder middle section air vent 45 area is very little, and the vacuum that driven plunger 52 produces picks up impact piston 32 and moves upward together.When driven plunger 52 moves downward, by the air cushion between driven plunger 52 and impact piston 32, impact piston 32 is ejected downwards at a high speed, the afterbody impacting pick rod 40 realizes tamping operation.When upwards mentioning tamping pickaxe, impact piston 32 moves down, and hole 45 area of cylinder middle section becomes large, and the vacuum that driven plunger 52 produces is very little, can not inhale impact piston 32, impacts and automatically stops.
The operating principle of lubricating system is:
When driving gear shaft 6 drives driven crank gear axle 29 High Rotation Speed, be stored in the lubricating grease in lubricating grease oil circuit 19,26 and chamber 2,17,23, flow under centrifugal action bearing 1,16, needle bearing 24,25, the flank of tooth of semiclosed ball bearing 27 and driving gear shaft 6, to realize greasing.And by catch 13,15 and 21,53, semiclosed ball bearing 27 forms that two relative airtight lubricating grease store, lubricating place, to avoid lubricating grease loss in use, to realize recycling, once refuels non-maintaining object half a year.
Claims (10)
1. this Portable internal combustion impact tamping pickaxe, forms primarily of motor, gearbox, cylinder, lower pick body, pick rod and handrail.It is characterized in that: gearbox connects dish by motor motor is housed, gearbox is split type, is made up of left and right two halves, joins together with 5 screws.Left box body outside is provided with two grease adding mouths.In gearbox, driving gear shaft is equipped with on top, by pair bearings of two in gearbox body, there is the lubricating grease oil circuit of particular design the inside of driving gear shaft and driven crank gear axle, communicate with two grease adding mouths of left box body outside respectively, lubricating grease, by oil circuit, spreads all over each position of needs lubrication, to improve the application life of consumable accessory (bearing, gear).The clutch plate screw thread of centrifugal clutch is screwed in the left end of driving gear shaft, and driving gear shaft passes through centrifugal clutch transmission by motor.Bottom in reduction box, is equipped with driven crank gear axle, crank is equipped with connecting rod, and in the endoporus of connecting rod two ends, needle bearing is housed, the right-hand member of driven gear shaft is equipped with bearing and loads bearing support.Cylinder 4 screws are fixed on the bottom of gearbox, and cylinder is integrated die casting aluminium, and endoporus adopts anodic oxidation cure process.In cylinder block, under be drilled with two air vents, directly communicate with air, unobstructed with air-flow when ensureing pistons work, reduce the power consumption of motor.Cylinder internal upper part is equipped with driven plunger, is driven by piston pin by connecting rod, and columned solid impact piston is equipped with in bottom, two pistons is all equipped with a pair reinforced TFE piston ring.Lower pick body is equipped with in the bottom of cylinder, lower pick body with lining be housed between cylinder be directly threaded.Pick rod is contained in the hexagonal hole of lower pick body by six sides of upper end, and pick rod is pinned by six locking steel balls of lower pick body lower end and the sliding sleeve of outside and prevents from.Sliding sleeve is spacing by upper and lower spacing jump ring, is located by location jump ring.Location jump ring is enclosed within the groove of sliding sleeve cylindrical, and has a tongue through sliding sleeve, inserts in the hole on lower pick body, makes sliding sleeve be locked in locked position.On lower pick body, the outward flange in hole has skewed slot, and when rotating sliding sleeve along skewed slot direction, the tongue of location jump ring will exit along skewed slot, sliding sleeve move, unclamp locking steel ball.Motor, gearbox, cylinder and lower pick body screw join together.Handrail is contained on the bearing on cylinder top by damper and nut.Handrail is also equipped with rubber shock-absorbing grip.
2. said cylinder in the Portable internal combustion impact tamping pickaxe of claim 1, is integrated die casting aluminium, and endoporus adopts anodic oxidation cure process.
3. said driving gear shaft and driven crank gear axle in the Portable internal combustion impact tamping pickaxe of claim 1, indoor design has lubricating grease oil circuit.
4. said cylinder in the Portable internal combustion impact tamping pickaxe of claim 1, is filled with moderate lubrication fat in cylinder.
5. in the Portable internal combustion impact tamping pickaxe of claim 1, said driven plunger and impact piston all there is a pair reinforced TFE piston ring.
6. said cylinder in the Portable internal combustion impact tamping pickaxe of claim 1, wherein, under be drilled with two air vents, two holes lead directly to air.
7. said pick rod in the Portable internal combustion impact tamping pickaxe of claim 1, pinned by six locking steel balls of lower pick body lower end and the sliding sleeve of outside and prevent from, sliding sleeve is spacing by upper and lower spacing jump ring, located by location jump ring, location jump ring is enclosed within the groove in the outer garden of sliding sleeve, and have a tongue through sliding sleeve, insert in the hole on lower pick body, sliding sleeve is made to be locked in locked position, on lower pick body, the outward flange in hole has skewed slot, and when rotating sliding sleeve along skewed slot direction, the tongue of location jump ring will exit along skewed slot, sliding sleeve moves, unclamps locking steel ball.
8. gearbox said in the Portable internal combustion impact tamping pickaxe of claim 1, left box body outside is provided with two grease adding mouths.
9. in the Portable internal combustion impact tamping pickaxe of claim 1, said impact piston is solid cylinder.
10. said lower pick body in the Portable internal combustion impact tamping pickaxe of claim 1, and is equipped with lining and is directly threaded between cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310293442.5A CN104278600A (en) | 2013-07-07 | 2013-07-07 | Portable grease lubrication impact packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310293442.5A CN104278600A (en) | 2013-07-07 | 2013-07-07 | Portable grease lubrication impact packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104278600A true CN104278600A (en) | 2015-01-14 |
Family
ID=52253909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310293442.5A Pending CN104278600A (en) | 2013-07-07 | 2013-07-07 | Portable grease lubrication impact packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104278600A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400621A (en) * | 2016-11-26 | 2017-02-15 | 蓬莱奥斯勃机械有限公司 | Hand-held shock impact internal combustion tamping pickaxe |
| CN109404514A (en) * | 2017-08-14 | 2019-03-01 | 苏州宝时得电动工具有限公司 | Support construction, transmission mechanism and the electric tool of eccentric wheel |
| CN113123788A (en) * | 2019-12-31 | 2021-07-16 | 宁波赛洛新风动工具有限公司 | A kind of breaker |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107743A (en) * | 1986-11-08 | 1988-05-18 | 盖凌祥 | Torsional impact vibration electric tamping machine |
| US5133263A (en) * | 1990-04-20 | 1992-07-28 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. | Ballast tamping assembly |
| CN2908598Y (en) * | 2006-06-28 | 2007-06-06 | 林凤君 | Internal combustion portable shock tamping pick |
| CN201109893Y (en) * | 2007-10-31 | 2008-09-03 | 张忠海 | Node type post spring vibrator |
| CN201704587U (en) * | 2010-05-10 | 2011-01-12 | 苏恩远 | Portable internal combustion impact tamping pickaxe |
| CN201817753U (en) * | 2010-09-16 | 2011-05-04 | 苏恩远 | Internal-combustion air-cushion impact-type tamping pick |
-
2013
- 2013-07-07 CN CN201310293442.5A patent/CN104278600A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107743A (en) * | 1986-11-08 | 1988-05-18 | 盖凌祥 | Torsional impact vibration electric tamping machine |
| US5133263A (en) * | 1990-04-20 | 1992-07-28 | Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. | Ballast tamping assembly |
| CN2908598Y (en) * | 2006-06-28 | 2007-06-06 | 林凤君 | Internal combustion portable shock tamping pick |
| CN201109893Y (en) * | 2007-10-31 | 2008-09-03 | 张忠海 | Node type post spring vibrator |
| CN201704587U (en) * | 2010-05-10 | 2011-01-12 | 苏恩远 | Portable internal combustion impact tamping pickaxe |
| CN201817753U (en) * | 2010-09-16 | 2011-05-04 | 苏恩远 | Internal-combustion air-cushion impact-type tamping pick |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400621A (en) * | 2016-11-26 | 2017-02-15 | 蓬莱奥斯勃机械有限公司 | Hand-held shock impact internal combustion tamping pickaxe |
| CN106400621B (en) * | 2016-11-26 | 2018-09-28 | 蓬莱奥斯勃机械有限公司 | Hand-held jerk tamping pick |
| CN109404514A (en) * | 2017-08-14 | 2019-03-01 | 苏州宝时得电动工具有限公司 | Support construction, transmission mechanism and the electric tool of eccentric wheel |
| CN113123788A (en) * | 2019-12-31 | 2021-07-16 | 宁波赛洛新风动工具有限公司 | A kind of breaker |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |