CN208507042U - Kinetic energy potential energy teaching aid - Google Patents
Kinetic energy potential energy teaching aid Download PDFInfo
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- CN208507042U CN208507042U CN201721512737.7U CN201721512737U CN208507042U CN 208507042 U CN208507042 U CN 208507042U CN 201721512737 U CN201721512737 U CN 201721512737U CN 208507042 U CN208507042 U CN 208507042U
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- guide rail
- mounting plate
- wooden
- wooden unit
- kinetic energy
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- 238000005381 potential energy Methods 0.000 title claims abstract description 32
- 239000002023 wood Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000003032 molecular docking Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 210000002706 plastid Anatomy 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of kinetic energy potential energy teaching aids, including track and the wooden vehicle, track includes mounting plate, mounting plate includes smoothly connected horizontal segment and slope surface section, it is fixed at least two guide rails on a mounting board, each guide rail protrudes mounting plate upper surface arrangement, the wooden vehicle is provided on each guide rail, the wooden vehicle includes wooden unit and two groups of the front and back wheel that is mounted on wooden unit, wooden unit is located above guide rail, there are spacing between wooden unit bottom surface and guide rail top surface, and wheel is located at the right and left of guide rail, and wheel is contacted with mounting plate upper surface.To providing a kind of kinetic energy potential energy teaching aid, it is not only simple in structure, more intuitively understands the conversion of kinetic energy potential energy convenient for demonstrating, convenient for student；And the participation of teaching is higher, interest is stronger, is more suitable for the study of low age student；It is also convenient for student simultaneously, autonomous Design and processing are carried out to the wooden vehicle, be conducive to the imagination and creativity that excite student, is conducive to the Science Explorations spirit for exciting student.
Description
Technical field
The utility model belongs to teaching aid technical field, in particular, in particular to a kind of kinetic energy potential energy teaching aid.
Background technique
Currently, the teaching of kinetic energy potential energy is mainly carried out in middle school period, since middle school student itself have certain stock of knowledge,
Therefore in the way of traditional animation demonstration, student can be helped to understand the conversion of kinetic energy potential energy.But as the quality of education is got over
It is more taken seriously, various physical teaching aids, model emerge one after another, wherein kinetic energy potential energy demonstration device is also more and more.Application
Number a kind of " kinetic energy potential energy demonstration device " is disclosed for the utility model patent of CN93209481.3, using combining removable knot
Structure, with multiple quality different plastid, two sliding blocks and a helical spring, the plastid of different quality can be from different height
It falls and hits sliding block, to demonstrate state (quality, speed, the height of the kinetic energy of object, gravitional force and elastic potential energy and object
Degree, deformation quantity equivalent) between relationship.Application No. is the utility model patents of CN201420259210.8 to also disclose one kind
" kinetic energy potential energy conversion demonstration instrument " makes that the structure of demonstrator is simple, makes by setting track, spring, baffle, paintbrush and drawing board
With convenient, interest is strong, the rule of kinetic energy potential energy conversion can be intuitively drilled, and can help to learn directly by student's hands-on
Scientific knowledge therein is grasped in life well, improves the learning interest of student.
As fierceness, the parents further of social competition also focus on further while focusing on child's information technological era
The accumulation of knowledge and the culture of manipulative ability, the implantation of knowledge also become younger further.The demonstrator of existing kinetic energy potential energy, also
It is to rest on the basis of demonstration, there is no participations higher, the stronger teaching aid of interest, to provide the teaching of low age student.
Utility model content
That the technical problem to be solved by the utility model is to provide a kind of participations is higher, interest is stronger, structure is simple
Single kinetic energy potential energy teaching aid.
The technical solution of the utility model is as follows: a kind of kinetic energy potential energy teaching aid, including track and the wooden vehicle, the track
Including mounting plate, the mounting plate includes smoothly connected horizontal segment and slope surface section, and at least two are fixed on the mounting plate
Root guide rail, each guide rail protrude mounting plate upper surface arrangement, the wooden vehicle, the wood are provided on each guide rail
Vehicle includes wooden unit and two groups of the front and back wheel that is mounted on wooden unit, and the wooden unit is located at guide rail top, in wooden unit bottom surface and guide rail
There are spacing between top surface, and the wheel is located at the right and left of guide rail, and wheel is contacted with mounting plate upper surface.
The utility model is by setting track and the wooden vehicle, to provide a kind of kinetic energy potential energy teaching aid, not only structure
Simply, the conversion of kinetic energy potential energy is more intuitively understood convenient for demonstrating, convenient for student；Moreover, the setting of at least two guide rails, it can
Understand and learn to guide student by way of multiple wooden vehicle matches, the participation of teaching is higher, interest is stronger, more
Study suitable for low age student；Also, moving person is used as using the wooden vehicle, not only safety and environmental protection, but also is convenient for student to the wooden vehicle
Autonomous Design and processing are carried out, the sufficient space of student and discretionary power are given, is conducive to the imagination and wound that excite student
Power is made, the Science Explorations spirit for exciting student is conducive to；Moreover the cooperation of guide rail and the wooden vehicle, efficiently avoid the wooden vehicle operation
The offset of track, it is ensured that the running track of each wood vehicle is consistent, avoids the conversion of the bias effect kinetic energy potential energy of running track.
The wooden unit in high 30, wide 45, long 180 rectangular block, positioned at wooden unit front wheel central axis apart from wooden unit
Distance 30≤d1≤50 of front end, positioned at distance 10≤d2≤25 of the central axis apart from wooden unit rear end of the wheel at wooden unit rear portion.
The size of rectangular block is suitable, hand-held suitable for student, can also give student sufficient design space.The position of the two groups of wheels in front and back is set
Meter, especially forward wheel is larger apart from headstock distance, keeps the center of gravity of the wooden vehicle of front-wheel distance closer, efficiently avoids the wooden vehicle
It overturns during slope surface section downlink.
Mounting groove corresponding with two groups of front and back wheel, the installation groove depth 3mm, width are provided in the bottom surface of the wooden unit
2mm；If it is too deep to install groove depth, the wooden appearance of vehicle easily rubs with racing track, influences speed；If it is too shallow to install groove depth,
The fixation for then following closely axis is insufficient, is easy to seriously affect the vehicle competition service life there is a situation where following closely axis to fall off.If installing groove width
Degree is too wide, and wheel can not be fastened by following closely axis, be easy to happen the case where wheel is fallen；If it is too small to install groove width, axis insertion is followed closely
The case where difficulty increases, and is easy to happen the splitting of the wooden vehicle.The wheel diameter is 30mm, and the wheel is mounted on correspondence by following closely axis
Mounting groove at, the guide rail protrudes mounting plate upper surface 10-15mm.Guide rail protrudes the size of mounting plate upper surface and wheel is pacified
Fill the cooperation of size, it is ensured that the spacing between the wooden vehicle bottom surface and guide rail top surface is greater than 10mm, is effectively prevented from the wooden vehicle and connects with guide rail
Touching avoids influencing speed.
It is fixed with clump weight in the wooden vehicle bottom surface, there are spacing between the bottom surface and guide rail top surface of the clump weight.
Clump weight, which is arranged, can be adjusted the weight of the wooden vehicle, be convenient for the comparison religion of different quality wood vehicle kinetic energy potential energy
It learns；After student carries out autonomous Design, processing to the wooden vehicle, it is also convenient for using clump weight that the Mass adjust- ment of each wooden vehicle is consistent.
The clump weight is the lead of thickness 2mm, and clump weight is pasted and fixed on the wooden vehicle bottom surface.Further, the center of gravity of the clump weight with
The line of the wooden car weight heart and the wooden vehicle plane perpendicular, this is it is advantageously ensured that efficient interference of the clump weight to the wooden car weight power.
The mounting plate is spliced by least two sections of plate bodys, and the guide rail, which is also segmented, is fixed on each mounting plate plate body
On, it is shorter than corresponding mounting plate plate body that corresponding mounting plate plate body, the other end are stretched out in wherein one end of each section guide rail, and stretches out
The Slidway lap of corresponding mounting plate plate body is on the mounting plate plate body of docking.In this way be arranged mounting plate, convenient for teaching aid storage and
Transhipment.And guide rail is overlapped with the intensity for being conducive to reinforce track.
End is disposed with device of dispatching a car on the track, and the device of dispatching a car includes shaft and bar, the shaft installation
In orbit end mounting plate downside, be fixed in the shaft with the one-to-one bar of guide rail, open on the track
Have and be located at the middle part of each guide rail upper end with the one-to-one strip-shaped hole of bar, the strip-shaped hole, when shaft rotation bar is upward
When overturning, bar is from strip-shaped hole protruding rail top surface and vertical with guide rail top surface, when shaft rotation bar downwardly turns over, bar
It is lowered to below mounting plate from strip-shaped hole.The arrangement of device of dispatching a car is facilitated ensuring that while being dispatched a car, more convenient to use.
It is connected with driving device in the shaft, is equipped with and guide rail infrared meter correspondingly in the track terminal
When device, the switch of the driving device is associated with infrared timer, and when the switch of driving device is opened, the bar is fallen,
The timer starts timing simultaneously, and when the wooden vehicle passes through terminal, the infrared ray of corresponding infrared timer is shielded, the infrared meter
When device stop timing.It is switched and is associated with infrared timer to start infrared timer using driving device, utilize infrared timer
Infrared ray cover to stop infrared timer, keep the metering of the wooden vehicle running time more accurate, convenient for obtaining the different wooden vehicles
Running time, it is more convenient to use convenient for intuitively learning the conversion of kinetic energy potential energy.
It is disposed with speed-reduction slope in the end of the track, the speed-reduction slope is located at after track terminal.Convenient for braking, avoid
The wooden vehicle plunges off the tracks.
The utility model has the advantages that the utility model passes through setting track and the wooden vehicle, so that a kind of kinetic energy potential energy teaching aid is provided,
It is not only simple in structure, more intuitively understands the conversion of kinetic energy potential energy convenient for demonstrating, convenient for student；And the participation of teaching is more
Height, interest are stronger, are more suitable for the study of low age student；It is also convenient for student simultaneously, autonomous Design and processing is carried out to the wooden vehicle,
The sufficient space of student and discretionary power are given, the imagination and creativity that excite student are conducive to, is conducive to excite student
Science Explorations spirit.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the top view of Fig. 1.
The A-A section view that Fig. 3 is Fig. 2 rotates figure.
Fig. 4 is the structural schematic diagram of the wooden vehicle.
Fig. 5 is the structural schematic diagram of wooden unit.
Fig. 6 is the working state schematic representation of bar.
Appended drawing reference: wooden unit 1, mounting groove 1a, wheel 2, guide rail 3, mounting plate 4, frame 5, shaft 6, bar 7, speed-reduction slope
8, strip-shaped hole 9, infrared timer 10.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The instructions such as " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside"
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore should not be understood as limiting the present invention.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
It should be noted that unless otherwise indicated, the dimensional units of patent application document are millimeter (mm).
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the present embodiment includes track and the wooden vehicle, and the track includes peace
Loading board 4, the preferably described mounting plate 4 of the present embodiment are 10 meters long.The mounting plate 4 includes the horizontal segment and slope surface section of smooth connection,
At least two guide rails 3 are fixed on the mounting plate 4, the preferably described guide rail 3 of the present embodiment is arranged side by side with four.Each institute
It states guide rail 3 and protrudes 4 upper surface of mounting plate arrangement, the guide rail 3 protrudes 4 upper surface 10-15mm of mounting plate, and the present embodiment is excellent
The guide rail 3 is selected to protrude 4 upper surface 10mm of mounting plate.The mounting plate 4 is spliced by least two sections of plate bodys, the guide rail 3
Also segmentation is fixed on each 4 plate body of mounting plate, and corresponding 4 plate body of mounting plate, the other end are stretched out in wherein one end of each section guide rail 3
It is shorter than corresponding 4 plate body of mounting plate, and the guide rail 3 for stretching out corresponding 4 plate body of mounting plate is overlapped on 4 plate body of mounting plate of docking
On.Each plate body of the mounting plate 4 can be plank, be also possible to metal plate, can also be plastic plate, without limitation.Peace
Connecting method between each plate body of loading board 4 also without limitation, can be plank end setting docking structure and be directly connected to, can also
To be the clamping of metal plate end, the present embodiment is preferably respectively and fixedly provided with frame 5 in the bottom surface of each plate body, adjacent frame 5 it
Between be fastened by bolts.
The wooden vehicle, the front and back that the wood vehicle includes wooden unit 1 and is mounted on wooden unit 1 are provided on each guide rail 3
Two groups of wheels 2.The wooden unit 1 is located at 3 top of guide rail, and there are spacing between 3 top surface of 1 bottom surface of wooden unit and guide rail.The wheel 2
Positioned at the right and left of guide rail 3, and wheel 2 and 4 upper plate face contact of mounting plate.The preferably described wooden unit 1 of the present embodiment is in height
30, wide 45, long 180 rectangular block.Positioned at the wheel 2 of 1 front of wooden unit distance 30≤d1 of the central axis apart from 1 front end of wooden unit≤
50, positioned at distance 10≤d2≤25 of the central axis apart from 1 rear end of wooden unit of the wheel 2 at 1 rear portion of wooden unit.The preferred d1 of the present embodiment is
45mm, d2 20mm.Mounting groove 1a corresponding with two groups of front and back wheel 2, the mounting groove 1a are provided in the bottom surface of the wooden unit 1
Deep 3mm, width 2mm, 2 diameter of wheel are 30mm, and the wheel 2 is mounted at corresponding mounting groove 1a by following closely axis.
It is fixed with clump weight in the wooden vehicle bottom surface, there are spacing between 3 top surface of bottom surface and guide rail of the clump weight.
The clump weight is the lead of thickness 2mm, and clump weight is pasted and fixed on the wooden vehicle bottom surface, and the center of gravity of the clump weight and the wooden car weight
The line of the heart and the wooden vehicle plane perpendicular.The clump weight is not shown in Figure of description.
End starting point is disposed with device of dispatching a car on the track, and the device of dispatching a car includes shaft 6 and bar 7.It is described
Shaft 6 is mounted on the downside of track upper end mounting plate 4, is fixed in the shaft 6 and the one-to-one bar 7 of guide rail 3.?
It is provided on the track and is located at the middle part of each 3 upper end of guide rail with the one-to-one strip-shaped hole 9 of bar 7, the strip-shaped hole 9,.When
Shaft 6 rotates bar 7 when being flipped up, and bar 7 is from 9 protruding rail of strip-shaped hole, 3 top surface and vertical with 3 top surface of guide rail, when shaft 6
When rotation bar 7 downwardly turns over, bar 7 is lowered to from strip-shaped hole 9 positioned at 4 lower section of mounting plate.The rotation of the shaft 6 can be with
It is manual operation, is also possible to automatically controlled.The present embodiment is preferably connected with automatically controlled driving device in the shaft 6.?
The track terminal is equipped with and the one-to-one infrared timer 10 of guide rail 3.The switch of the driving device and infrared timing
10 electricity association of device.When the switch of driving device is opened, the bar 7 is fallen, while the infrared timer 10 starts timing；
When the wooden vehicle passes through terminal, the infrared ray of corresponding infrared timer 10 is shielded, which stops timing.It is described red
Outer timer 10 includes the light source positioned at 3 lower section of guide rail and the ontology above guide rail, when driving device, which switchs, opens,
Ontology starts timing, and the infrared ray of light source outgoing is received by ontology；When the wooden vehicle is reached home, infrared ray is covered by wooden unit, ontology
It receives signal and stops timing.
It is disposed with speed-reduction slope 8 in the end of the track, the speed-reduction slope 8 is located at after track terminal.
In field research, the utility model can there are many application methods, in order to promote student's Scientific exploration, heuristics
Raw imagination and creativeness, the present embodiment method preferably used below:
Step 1 allows student to complete the configuration design figure of the wooden vehicle on paper, and design drawing is pasted on wooden unit 1；
Step 2 by wooden unit 1 according to design drawing cutting processing, and carries out surface polishing and tints, dries；
Step 3 installs wheel 2 on wooden unit 1, and adds wheel lubricant, reduces friction and the wheel of wheel hub
Friction between wooden unit；
Step 4 weighs to the wooden vehicle, and it is unified by the weight of same group of vehicle to increase clump weight；
The wooden vehicle is placed on track starting point by step 5, is the principle of kinetic energy using potential energy, carries out the unpowered small wooden vehicle
Match.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Claims (8)
1. a kind of kinetic energy potential energy teaching aid, it is characterised in that: including track and the wooden vehicle, the track includes mounting plate, described
Mounting plate includes smoothly connected horizontal segment and slope surface section, and at least two guide rails are fixed on the mounting plate, each described
Guide rail protrudes mounting plate upper surface arrangement, the wooden vehicle is provided on each guide rail, the wood vehicle includes wooden unit and peace
Two groups of front and back wheel on wooden unit, the wooden unit are located above guide rail, between wooden unit bottom surface and guide rail top surface there are
Away from the wheel is located at the right and left of guide rail, and wheel is contacted with mounting plate upper surface.
2. kinetic energy potential energy teaching aid according to claim 1, it is characterised in that: the wooden unit in high 30, it is wide 45, long
180 rectangular block, positioned at distance 30≤d1≤50 of the central axis apart from wooden unit front end of the wheel of wooden unit front, after being located at wooden unit
Distance 10≤d2≤25 of the central axis of the wheel in portion apart from wooden unit rear end, the dimensional units in above-mentioned technical characteristic are millimeter
(mm)。
3. kinetic energy potential energy teaching aid according to claim 1, it is characterised in that: be provided with before in the bottom surface of the wooden unit
The corresponding mounting groove of two groups of wheels afterwards, the installation groove depth 3mm, width 2mm, the wheel diameter are 30mm, and the wheel passes through
Nail axis is mounted at corresponding mounting groove, and the guide rail protrudes mounting plate upper surface 10-15mm.
4. kinetic energy potential energy teaching aid according to claim 1, it is characterised in that: be fixed with counterweight in the wooden vehicle bottom surface
Block, there are spacing between the bottom surface and guide rail top surface of the clump weight.
5. kinetic energy potential energy teaching aid according to claim 1, it is characterised in that: the mounting plate is by least two sections of plate bodys
It is spliced, the guide rail, which is also segmented, to be fixed on each mounting plate plate body, and corresponding peace is stretched out in wherein one end of each section guide rail
Loading board plate body, the other end are shorter than corresponding mounting plate plate body, and stretch out the Slidway lap of corresponding mounting plate plate body in docking
On mounting plate plate body.
6. kinetic energy potential energy teaching aid according to claim 1, it is characterised in that: end, which is disposed with, on the track dispatches a car
Device, the device of dispatching a car include shaft and bar, and the shaft is mounted on the downside of track upper end mounting plate, in the shaft
On be fixed with the one-to-one bar of guide rail, be provided on the track and the one-to-one strip-shaped hole of bar, the bar shaped
Hole is located at the middle part of each guide rail upper end, when shaft rotation bar be flipped up when, bar from strip-shaped hole protruding rail top surface simultaneously
Vertical with guide rail top surface, when shaft rotation bar downwardly turns over, bar is lowered to below mounting plate from strip-shaped hole.
7. kinetic energy potential energy teaching aid according to claim 6, it is characterised in that: be connected with driving dress in the shaft
It sets, is equipped with and guide rail infrared timer correspondingly, the switch of the driving device and infrared meter in the track terminal
When device be associated with, when driving device switch open when, the bar is fallen, while the timer starts timing, when the wooden vehicle pass through
When crossing terminal, the infrared ray of corresponding infrared timer is shielded, which stops timing.
8. kinetic energy potential energy teaching aid according to claim 1, it is characterised in that: be disposed with and subtract in the end of the track
Fast slope, the speed-reduction slope are located at after track terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721512737.7U CN208507042U (en) | 2017-11-13 | 2017-11-13 | Kinetic energy potential energy teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721512737.7U CN208507042U (en) | 2017-11-13 | 2017-11-13 | Kinetic energy potential energy teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208507042U true CN208507042U (en) | 2019-02-15 |
Family
ID=65302263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721512737.7U Active CN208507042U (en) | 2017-11-13 | 2017-11-13 | Kinetic energy potential energy teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208507042U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665622A (en) * | 2017-11-13 | 2018-02-06 | 北京凯斯卡汽车科技有限公司 | kinetic energy potential energy teaching aid |
| CN111482222A (en) * | 2020-04-22 | 2020-08-04 | 林小春 | Quick breaker of lime piece for fitment |
| RU2744314C1 (en) * | 2020-08-28 | 2021-03-05 | Эдуард Павлович Цыганов | Device for studying partially elastic shock interactions in system of three physical bodies |
-
2017
- 2017-11-13 CN CN201721512737.7U patent/CN208507042U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665622A (en) * | 2017-11-13 | 2018-02-06 | 北京凯斯卡汽车科技有限公司 | kinetic energy potential energy teaching aid |
| CN111482222A (en) * | 2020-04-22 | 2020-08-04 | 林小春 | Quick breaker of lime piece for fitment |
| CN111482222B (en) * | 2020-04-22 | 2021-09-24 | 德庆县东航环保材料有限公司 | Quick breaker of lime piece for fitment |
| RU2744314C1 (en) * | 2020-08-28 | 2021-03-05 | Эдуард Павлович Цыганов | Device for studying partially elastic shock interactions in system of three physical bodies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190520 Address after: 100070 Beijing Fengtai Auto Museum East Road, Building 6, Building 1, Unit 11, 1011-C6 (Park) Patentee after: Deng Long Address before: 100070 Beijing Fengtai Auto Museum East Road, Building 6, Building 1, Unit 11, 1011-C6 (Park) Patentee before: Beijing keskar Automobile Technology Co Ltd |
|
| TR01 | Transfer of patent right |