CN1431102A - Electric blackboard - Google Patents
Electric blackboard Download PDFInfo
- Publication number
- CN1431102A CN1431102A CN 03112751 CN03112751A CN1431102A CN 1431102 A CN1431102 A CN 1431102A CN 03112751 CN03112751 CN 03112751 CN 03112751 A CN03112751 A CN 03112751A CN 1431102 A CN1431102 A CN 1431102A
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- blackboard
- round brush
- flexible
- flexible blackboard
- driven
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- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 230000005484 gravity Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
An electric blackboard for education purpose is composed of motor, flexible blackboard, drive wheel, driven wheel, tension unit, automatic balancing unit, erasing roller brush, the roller brush for removing dust, frame, external hood and manipulating box. Its advantages are low noise and less environmental pollution.
Description
Technical field
The present invention relates to the driven blackboard in the teaching equipment.
Background technology
At present, each is big, in, the blackboard great majority of primary school's education usefulness are traditional hard blackboards, manually wipe letter written with chalk, the dust full classroom of wafing, cause teachers and students easily to suffer from respiratory disease, diminish the healthy of teachers and students, and waste time and energy, influence teaching efficiency, taken valuable instructional blocks of time, this original teaching aid and modern education cause are incompatible, and do not meet environmental requirement, therefore adopt driven blackboard, automatically wipe, collecting dust is a kind of effective way, and it has not only kept existing educational pattern, makes teachers and students be easy to accept, having solved the collection problem with dust of wiping of letter written with chalk again, is that 97221507.7 Chinese patent is exactly one of way that addresses this problem as the patent No..But existing driven blackboard still exists: 1, the flexible blackboard of circulation rotation is because of the effect sideslip of gravity; 2, the variation flexible blackboard along with temperature has bigger expanding with heat and contract with cold, and the flexible blackboard meeting plastic elongation of tightening for a long time consequently causes operational failure; 3, wipe the word round brush by dust pollution, the basic wiping of blackboard is unclean; Problems such as 4, rotational noise is big, it has seriously hindered the production of driven blackboard and has promoted.
Summary of the invention
Purpose of the present invention is exactly the problem that exists at present driven blackboard, design a kind of new driven blackboard, solve the flexible blackboard sideslip that exists in the existing driven blackboard, the back flexible blackboard rate of tension of expanding with heat and contract with cold and to adjust, wipe problems such as word poor effect, noise are big automatically.
Technical solution of the present invention:
The present invention has solved the sideslip problem of flexible blackboard 12 by the way that increases an autobalance 11 between flexible blackboard 12 and framework 29; By driven pulley 15 is encorbelmented, utilize tensioning support 16 to promote to move with the affixed movably nutted rod 54 of driven pulley 15, solved flexible blackboard 12 causes operational failure because of expanding with heat and contract with cold problem thereby drive way that driven pulley 15 moves; Wipe word round brush 8 and go powder round brush 9 to be abutted against and do the brushing rotation by making, go powder round brush 9 to remove effectively attached to the dust of wiping on the word round brush 8, guarantee to wipe word round brush 8 and do not improved wiping word effect, further improved wiping word effect by making the way of wiping word round brush 8 direction of rotation identical with going powder round brush 9 and flexible blackboard 12 maintenances by the way of dust circulation pickup; Employing makes to wipe between word round brush 8 and the flexible blackboard 12 and keeps certain interval, by cluth roller 41 flexible blackboard 12 is contacted with wiping word round brush 8, and writing is kept; Reduced the noise of whole system by the way that sound-absorption hole and the transmission of employing driving-belt are set at the inwall of handling case lid door 32; In order to increase writing effect, increased a writing backing plate 13 in the inboard of flexible blackboard 12.Details are as follows:
Driven blackboard by outer cover 35, framework 29, flexible blackboard 12, driving wheel 30, driven pulley 15, wipe word round brush 8, go parts such as powder round brush 9, driving-belt wheels 23, cluth roller 41, autobalance 11, writing backing plate 13, motor 1 to form.Flexible blackboard 12, driving wheel 30, driven pulley 15, wipe word round brush 8, go parts such as powder round brush 9, driving-belt wheels 23, cluth roller 41 to be installed in the operation panel, operation panel both can be made left-arranged type, also can make the right side and put formula, operation panel is provided with lid door 32, door lock 33, master cock 31, Isolating Switch 10, ash hole 56, the inwall of handling case lid door 32 has sound-absorption hole and dustproof partition 61, the removal of all dust and collection are all carried out in operation panel, have reduced the pollution to air.Envelope dirt wool top 38 is arranged on the outer cover 35, and a side of framework 29 is provided with magnetic white board hanging scroll 57, and the upper end of framework 29 is provided with installs suspension ring 34.Driving wheel 30 is affixed with framework 29 by bearing 4 and bearing 3, driven pulley 15 is coupling on the bearing 4 in horizontal seat 14, horizontal seat 14 is affixed with nutted rod 54, one end of tensioning support 16 is inserted in the intermediate channel of nutted rod 54 and is affixed with pin 17, the middle part of tensioning support 16 is through on the column 37, but move left and right, one end of tensioning support 16 is provided with spring 20 and is connected with column 37, the upper and lower side of column 37 is fixed on the framework 29, driven pulley 15 is encorbelmented on column 37 by nutted rod 54 and tensioning support 16, under the effect of spring 20, promote nutted rod 54 by tensioning support 16, nutted rod 54 promotes driven pulley 15 and moves, thereby make the flexible blackboard 12 that is socketed on driving wheel 30 and the driven pulley 15 remain certain force of strain, during shrinkage, driven pulley 15 (driven pulley 15 is positioned at the right side of blackboard) automatically left moves, and during heat expansion, driven pulley 15 moves right automatically.Wipe word round brush 8 and go powder round brush 9 to be fixed on the framework 29 for two by three hole bearing vibration damping holders 7, go the powder round brush 9 and the wiping word round brush 8 of both sides to be abutted against, one end of the wiping word round brush 8 in left side is connected with drive 5, the other end of wiping word round brush 8 is connected with brief biography driving wheel 51, goes to the lower end of powder round brush 9 to be connected with large drive wheel 52 and drive 22.Between two wiping word round brush 8 and flexible blackboard 12 surfaces, leave certain clearance, the home record of flexible blackboard 12 has cluth roller 41, and it is corresponding with two wiping word round brush 8, one end and the framework 29 of electromagnet 24 are affixed, the other end is connected with pull bar 58 on the cluth roller 41, one end and the framework 29 of spring 39 are affixed, the other end is connected with pull bar 58 on the cluth roller 41, when electromagnet 24 energisings are closed, cluth roller 41 retracts under the effect of pull bar 58, flexible blackboard 12 breaks away from wiping word round brush 8 by the tension force of self, thereby keeps writing, during electromagnet 24 outages, cluth roller 41 contacts flexible blackboard 12 with wiping word round brush 8, realize wiping the word function, it is identical with the direction of rotation of removing powder round brush 9 and flexible blackboard 12 to wipe word round brush 8, is all clockwise or is all counterclockwise.In order to increase the feel that the teacher writes, increased writing backing plate 13 at the home record of flexible blackboard 12, writing backing plate 13 is affixed by vibration damping connecting rod 19 and framework 29.In order to increase the intensity of flexible blackboard 12, layer increases netted tension and strengthens interlayer within it when making flexible blackboard 12, and in order to guarantee writing effect and visual effect, the surface of flexible blackboard 12 should guarantee certain roughness and be inferior light when making.Autobalance 11 is positioned at middle and upper part, flexible blackboard 12 back side, comprise pinch roller 42, minor axis 43, major axis 44, jump ring 50, guide wheel 49, guide rod 47, transfer bar 48, jump ring groove 45, suspension rod 46, last loose joint pin 59, following loose joint pin 60, transverse slat 58, guide rod 47 and accent bar 48 and guide wheel 49 both can have been made unilateral and also can make symmetrical expression, autobalance 11 is hung middle and upper part at framework 29 by suspension rod 46,2 places suitable for reading, back that pinch roller 42 is clamped flexible blackboard 12, guide wheel 49 stretchers are at the edge of flexible blackboard 12, and be between the anti-bent circle 36, the flexible blackboard 12 that is rotating is because downward displacement takes place in gravitate, the guide wheel 49 of stretcher this moment on flexible blackboard 12 and then moves down simultaneously, 2 pinch rollers 42 be subjected to guide rod 47 to stir with suspension rod 46 be the center of circle, swing to the right gradually, two pinch rollers 42 are in the left side of drawing vertical line with suspension rod 46 downwards gradually this moment, two pinch rollers 42 are clamped and then rotation of flexible blackboard 12, produce a kind of pulling force that makes progress, flexible blackboard 12 runs downwards, its pulling force is also big more, when pulling force during greater than gravity, flexible blackboard 12 begins to do moving upwards, when adjusting to pulling force automatically and equaling gravity, flexible blackboard 12 keeps balance, the work that autobalance so moves in circles, guarantee not sideslip of flexible blackboard 12, and be in the optimum balance state.Be provided with adjuster 18 in the lower end of driven pulley 15, it mainly acts on is the depth of parallelism of regulating driving wheel 30 and driven pulley 15.Motor 1 is affixed by vibration damping holder 55 and framework 29, motor 1 drives drive 2 and rotates, drive 2 is passed to drive 5 by driving-belt with power, drive 5 drives and wipes driving-belt wheels 23 actions that word round brush 8 is coupling, driving-belt wheels 23 rotate by driving drive 26 with the drive 22 that goes powder round brush 9 to be coupling by driving-belt, drive 27 affixed on the drive 26 drives drive 25 rotations that are coupling with driving wheel 30 by driving-belt, driving driving wheel 30 rotates, on the driving-belt that connects drive 27 and drive 25, also be provided with tensioning steamboat 40, with wipe brief biography driving wheel 51 that word round brush 8 is coupling by driving-belt 53 be connected with the large drive wheel 52 that goes powder round brush 9 to be coupling.By a series of driving-belt transmission, reduced mechanicalness noise.
Beneficial effect of the present invention:
Problems such as the present invention has compared with prior art overcome blackboard sideslip that existing driven blackboard exists, expands with heat and contract with cold, wipes the word weak effect, noise is big, it is reasonable to have topology layout, kind of drive economy, and noise is little, cost is low, dependable performance has kept existing teaching custom, can automatic blackboard cleaning, can preserve the part that does not need to wipe examination again, easy to use, sanitation and hygiene, of great advantage to improving efficiency of teaching.
Description of drawings
Fig. 1 is an overall appearance front view of the present invention.
Fig. 2 is a positive facade structural representation of the present invention.
Fig. 3 is a plan structure schematic diagram of the present invention.
Fig. 4 is the structural representation of autobalance 11 of the present invention.
Fig. 5 is the structural representation of driving-belt wheels 23 of the present invention.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
Referring to accompanying drawing, press master cock 31, motor 1 passes to power the wiping word round brush 8 in left side, wipe word round brush 8 and go to the lower end of powder round brush 9 to be connected with driving-belt wheels 23, wiping word round brush 8 for two goes powder round brush 9 to be abutted against with one and does relative brushing rotation, go powder round brush 9 to remove the dust of wiping on the word round brush 8 attached to two effectively, guaranteed that two are wiped the word round brush not by dust circulation pickup, go the other end of powder round brush 9 to be connected with drive 22, it passes to driving wheel 30 with power by drive 26 and drive 27, velocity of rotation is from just being deceleration to end, and for turning clockwise, this transmission is arranged and has been saved a reductor, flexible blackboard 12 is made slow rotation on driving wheel 30 and driven pulley 15, wipe 8 of word round brush for two and make fast rotational, when flexible blackboard 12 is abutted against two wiping word round brush 8, its contact linear velocity direction is opposite, two bristle soft durometer of wiping on the word round brush 8 are that the surface roughness with flexible blackboard 12 is complementary, driven pulley 15 is encorbelmented on column 37, by spring 20 flexible blackboard 12 is tightened, flexible blackboard 12 can freely stretch with temperature Change in this state, adjuster 18 is used for regulating the depth of parallelism of driven pulley 15 and driving wheel 30, in order to improve the intensity of flexible blackboard, portion increases netted tension and strengthens interlayer within it when making flexible blackboard 12, guarantee that flexible blackboard 12 works in elastic range, during flexible blackboard 12 rotation since gravity effect meeting occur or sideslip downward or upward, flexible blackboard 12 is soft thin, sideslip control to this roomy soft thin body of rotation is the difficult problem in this field, the present invention has designed a kind of autobalance 11 and has overcome this difficult problem, autobalance 11 is mainly by pinch roller 42, minor axis 43, major axis 44, jump ring 50, guide wheel 49, guide rod 47, transfer bar 48, jump ring groove 45, suspension rod 46, last loose joint pin 59, following loose joint pin 60, transverse slat 58 compositions such as grade, autobalance 11 is hung middle and upper part at framework 29 by suspension rod 46,2 places suitable for reading, back that pinch roller 42 is clamped flexible blackboard 12, guide wheel 49 stretchers are at the edge of flexible blackboard 12, and be between two anti-bent circles 36, when driving wheel 30 and driven pulley 15 were parallel, the flexible blackboard 12 that is rotating was because downward gradually displacement takes place in the gravity effect, the guide wheel 49 of stretcher on flexible blackboard 12 and then moves down simultaneously, 2 pinch rollers 42 are subjected to stirring of guide rod 47, are the center of circle with suspension rod 46, swing to the right gradually, two pinch rollers 42 are in the left side that suspension rod 46 draws vertical line downwards gradually this moment, two pinch rollers 42 are clamped and then rotation of flexible blackboard 12, produce a kind of pulling force that makes progress, and flexible blackboard 12 runs downwards, its pulling force is also big more, when pulling force during greater than gravity, flexible blackboard 12 begins to do moving upwards, adjusts to pulling force automatically and equals gravity, flexible blackboard 12 keeps balance, the work that autobalance 11 moves in circles has guaranteed not sideslip of flexible blackboard 12, and is in the optimum balance state, flexible blackboard 12 is in the time spent of doing that is not subjected to cluth roller 41, be to leave two slightly to wipe word round brush 8, when cluth roller 41 pushes against flexible blackboard 12 two when wiping word round brush 8 under the effect of spring 39, flexible blackboard 12 lip-deep writings can be wiped word round brush 8 by two and wipe automatically, when needs temporarily keep written contents, can press Isolating Switch 10 startup electromagnet 24 cluth roller 41 is retracted, flexible blackboard 12 leaves two automatically by the tension force of self tightening and wipes word round brush 8, and dust is concentrated from the bottom of dropping on operation panel, periodic cleaning gets final product, one side of framework 29 is provided with magnetic white board hanging scroll 57, is used for installing a magnetic writing blank, and the magnetic writing blank should be done head-on direction rotation around magnetic white board hanging scroll 57, to adjust student's sight line, the magnetic writing blank both can be put projection, again can wall chart or write, increased teaching face, advance when running into to have a power failure, driven blackboard still can be worked as normal blackboard and be used.Motor 1 adopts the low noise motor, flexible blackboard 12 increases the netted interlayer with certain toughness in the layer within it during fabrication, work in elastic range to guarantee flexible blackboard 12, anti-bent circle 36 can bend with general steel wire or iron wire, operation panel is a left-arranged type, and the guide rod 47 in the autobalance 11, accent bar 48, guide wheel 49 are put for a unilateral left side.
Claims (7)
1, a kind of driven blackboard, by motor (1), driving wheel (30), driven pulley (15), wipe word round brush (8), remove powder round brush (9), flexible blackboard (12), framework (29) is formed, motor (1), driving wheel (30), driven pulley (15), wipe word round brush (8), go powder round brush (9) to be installed in the operation panel, operation panel links to each other with framework (29), flexible blackboard (12) is enclosed within on driving wheel (30) and the driven pulley (15), pass through the transmission device driven rotary by motor (1), wiping word round brush (8) contacts with flexible blackboard (12) wipes writing, go powder round brush (9) to contact with wiping word round brush (8), remove the dust of wiping on the word round brush (8), dust falls to the operation panel bottom automatically, it is characterized in that:
A, the autobalance (11) that prevents flexible blackboard (12) sideslip is installed between framework (29) and flexible blackboard (12);
B, driven pulley (15) move left and right under the effect of tensioning support (16) is regulated the distance between driving wheel (30) and driven pulley (15);
Leave the gap between c, wiping word round brush (8) and the flexible blackboard (12), wipe word round brush (8) and realize contacting and separating by cluth roller (41) with flexible blackboard (12);
D, be lined with writing backing plate (13) at the home record of flexible blackboard (12), writing backing plate (13) is affixed by vibration damping connecting rod (19) and framework (29);
E, to wipe word round brush (8) consistent with the direction of rotation of removing powder round brush (9), and identical with the direction of rotation of flexible blackboard (12).
2, driven blackboard according to claim 1, it is characterized in that described autobalance (11) comprises pinch roller (42), minor axis (43), major axis (44), jump ring (50), guide wheel (49), guide rod (47), transfer bar (48), jump ring groove (45), suspension rod (46), last loose joint pin (59), following loose joint pin (60), transverse slat (58), autobalance (11) is hung middle and upper part in framework (29) by suspension rod (46), pinch roller (42) is clamped the place suitable for reading, back of flexible blackboard (12), guide wheel (49) stretcher is at the edge of flexible blackboard (12), and is in and prevents between the Fang Ququan (36) that flexible blackboard (12) curls.
3, driven blackboard according to claim 1, the surface that it is characterized in that described flexible blackboard (12) are coarse inferior light, and internal layer is provided with netted tension and strengthens interlayer.
4, driven blackboard according to claim 1 is characterized in that lid door (32) inwall of described control cabinet has sound-absorption hole and dustproof cut off (61).
5, driven blackboard according to claim 1 is characterized in that the blank hanging scroll (57) that is magnetic on the described framework.
6, driven blackboard according to claim 1 is characterized in that described motor (1) is affixed by vibration damping holder (55) and framework (29).
7, driven blackboard according to claim 1 is characterized in that on described wiping word round brush (8) and the vibration damping holder (7) that goes powder round brush (9) to be installed in to be connected with framework (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112751 CN1197718C (en) | 2003-01-24 | 2003-01-24 | Electric blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03112751 CN1197718C (en) | 2003-01-24 | 2003-01-24 | Electric blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1431102A true CN1431102A (en) | 2003-07-23 |
| CN1197718C CN1197718C (en) | 2005-04-20 |
Family
ID=4790283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03112751 Expired - Fee Related CN1197718C (en) | 2003-01-24 | 2003-01-24 | Electric blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1197718C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427327C (en) * | 2006-05-01 | 2008-10-22 | 陈继勇 | Concentratively controlled multimedia teaching system |
| CN101628518B (en) * | 2009-03-30 | 2011-07-20 | 刘大仁 | Multifunctional synthetic flexible blackboard |
| CN102229301A (en) * | 2011-07-06 | 2011-11-02 | 裴志胜 | Power-driven blackboard |
| CN102616063A (en) * | 2012-03-23 | 2012-08-01 | 曹玉升 | Electric blackboard constituted by group of parallel rectangular battens |
| CN102848816A (en) * | 2012-09-14 | 2013-01-02 | 句容富达教学设备科技有限公司 | Multimedia teaching system |
| CN102874020A (en) * | 2012-09-14 | 2013-01-16 | 句容富达教学设备科技有限公司 | Flexible annular blackboard face structure |
| CN104802571A (en) * | 2015-04-07 | 2015-07-29 | 河南科技大学 | Dust-free blackboard capable of realizing automatic wiping |
| CN106097841A (en) * | 2016-08-22 | 2016-11-09 | 浙江大学 | Object constant speed water outlet experimental provision |
| CN111210697A (en) * | 2020-02-28 | 2020-05-29 | 上海聚侠软件技术有限公司 | Multifunctional learning and displaying device for broadcast television program guide |
-
2003
- 2003-01-24 CN CN 03112751 patent/CN1197718C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427327C (en) * | 2006-05-01 | 2008-10-22 | 陈继勇 | Concentratively controlled multimedia teaching system |
| CN101628518B (en) * | 2009-03-30 | 2011-07-20 | 刘大仁 | Multifunctional synthetic flexible blackboard |
| CN102229301A (en) * | 2011-07-06 | 2011-11-02 | 裴志胜 | Power-driven blackboard |
| CN102229301B (en) * | 2011-07-06 | 2013-03-27 | 裴志胜 | Power-driven blackboard |
| CN102616063A (en) * | 2012-03-23 | 2012-08-01 | 曹玉升 | Electric blackboard constituted by group of parallel rectangular battens |
| CN102616063B (en) * | 2012-03-23 | 2014-08-06 | 商丘师范学院 | Electric blackboard constituted by group of parallel rectangular battens |
| CN102848816A (en) * | 2012-09-14 | 2013-01-02 | 句容富达教学设备科技有限公司 | Multimedia teaching system |
| CN102874020A (en) * | 2012-09-14 | 2013-01-16 | 句容富达教学设备科技有限公司 | Flexible annular blackboard face structure |
| CN104802571A (en) * | 2015-04-07 | 2015-07-29 | 河南科技大学 | Dust-free blackboard capable of realizing automatic wiping |
| CN104802571B (en) * | 2015-04-07 | 2016-08-03 | 河南科技大学 | A kind of dust-free blackboard that can realize automatic erasing |
| CN106097841A (en) * | 2016-08-22 | 2016-11-09 | 浙江大学 | Object constant speed water outlet experimental provision |
| CN111210697A (en) * | 2020-02-28 | 2020-05-29 | 上海聚侠软件技术有限公司 | Multifunctional learning and displaying device for broadcast television program guide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1197718C (en) | 2005-04-20 |
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Owner name: HU'NAN QIU ZEYOU PATENT STRATEGIC PLANNING CO., LT Free format text: FORMER OWNER: QIU ZEYOU Effective date: 20101102 |
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Effective date of registration: 20101109 Address after: 212400 Jiangsu Jurong Economic Development Zone Shishi road fidelity Pioneer Park 03 Patentee after: Jurong Fuda Teaching Equipment Technology Co., Ltd. Address before: 212400 room 3, building 501, Union Village, Jiangsu, Jurong Patentee before: Pei Zhisheng |
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Granted publication date: 20050420 Termination date: 20200124 |
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