CN106768739A - A kind of device for accurately measuring for vollyball elasticity - Google Patents
A kind of device for accurately measuring for vollyball elasticity Download PDFInfo
- Publication number
- CN106768739A CN106768739A CN201611052239.9A CN201611052239A CN106768739A CN 106768739 A CN106768739 A CN 106768739A CN 201611052239 A CN201611052239 A CN 201611052239A CN 106768739 A CN106768739 A CN 106768739A
- Authority
- CN
- China
- Prior art keywords
- vollyball
- placing box
- hole
- switch
- electromagnet
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of vollyball measurement apparatus, more particularly to a kind of device for accurately measuring for vollyball elasticity.The technical problem to be solved in the present invention is to provide a kind of quantity that can reduce the unqualified vollyball of quality, reduces economic loss, the device for accurately measuring for vollyball elasticity of personnel's injury that reduction is caused because vollyball quality is unqualified.In order to solve the above-mentioned technical problem, the invention provides the device for accurately measuring that such a is used for vollyball elasticity, include base plate, workbench, placing box, score bucket, first switch, second switch, go out ball bucket, push rod, push pedal, slide rail, sliding block, U-shaped electromagnet etc.；Base plate top left side is welded with workbench, and the mode that bench-top is bolted is connected with placing box.The present invention dishes out by by vollyball, so that vollyball is left a trace on froth bed, judges whether the elastic force that vollyball has is qualified by measuring the height in hole on froth bed.
Description
Technical field
The present invention relates to a kind of vollyball measurement apparatus, more particularly to a kind of device for accurately measuring for vollyball elasticity.
Background technology
One of vollyball, vollyball ball game project, court rectangle, centre are separated with net high, opposing teams (per six people of side)
The side for respectively accounting for court, sportsman with hand, ball, play many times from network by sky.The ball that volleyball movement is used, makes of sheepskin or artificial leather
Shell, rubber does courage, and size is similar with football.
Vollyball is easy to use as a kind of ball instrument be easy to and take exercise, and is not limited by place, therefore demand is larger,
And some businessmans have the large batch of making underproof vollyball of coefficient of elasticity to reap staggering profits, certain journey can be so caused
Economic loss on degree, while easily causing the shortcoming that certain personnel injure using underproof vollyball, therefore needs research and development badly
A kind of quantity that can reduce the unqualified vollyball of quality, reduction economic loss, reduction are caused because vollyball quality is unqualified
The device for accurately measuring for vollyball elasticity of personnel's injury.
The content of the invention
(1) technical problem to be solved
The present invention is large batch of to make the underproof vollyball of coefficient of elasticity in order to overcome some businessmans to reap staggering profits,
Economic loss to a certain extent can be so caused, while easily causing lacking for certain personnel's injury using underproof vollyball
Point, the technical problem to be solved in the present invention be to provide a kind of quantity that can reduce the unqualified vollyball of quality, reduce economic loss,
The device for accurately measuring for vollyball elasticity of personnel's injury that reduction is caused because vollyball quality is unqualified.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides the device for accurately measuring that such a is used for vollyball elasticity,
Include base plate, workbench, placing box, score bucket, first switch, second switch, go out ball bucket, push rod, push pedal, slide rail, sliding block,
U-shaped electromagnet, elastic component, the first electromagnet, fix bar, passage, friction plate, baffle plate, top board and froth bed, base plate top left side
Workbench is welded with, the mode that bench-top is bolted is connected with placing box, and the front side of placing box is by screw
Mode is connected with first switch and second switch, and first switch is located at the left of second switch, and placing box top is connected by bolt
The mode for connecing is connected with goal bucket, first through hole is provided with the right side of placing box, the mode being bolted on the right side of placing box
Ball bucket is connected with out, goes out ball bucket positioned at the right side of first through hole, left upper portion and bottom in placing box are bolted
Mode be connected with slide rail, slidingtype is connected with sliding block, the mode being bolted between the sliding block of upper and lower both sides on slide rail
U-shaped electromagnet is connected with, U-shaped electromagnet middle part is provided with the second through hole, and the left side in placing box is provided with two guide holes, sliding in guide hole
Dynamic formula is connected with push rod, and the left end of push rod is welded with push pedal, and the mode that the right-hand member of push rod is bolted is connected with the first electricity
Magnet, the first electromagnet middle part is provided with third through-hole, and the left side central portion in placing box is welded with fix bar, the left side in placing box
Elastic component is welded with, fix bar passes through elastic component, third through-hole and the second through hole, between the right-hand member of elastic component and U-shaped electromagnet
Connected by way of hook, passage is provided with the right side of placing box, the right-hand member of passage is located in first through hole, the upper end position of passage
In bucket bottom of scoring, the left end of passage is located at the right of U-shaped electromagnet, and the mode that base plate top right side is bolted is connected
There is friction plate, the mode that friction plate right-hand member is bolted is connected with baffle plate, and baffle plate left side is bonded with froth bed, baffle plate top
Top board is connected with by way of welding, the first electromagnet and U-shaped electromagnet have circuit to connect with first switch and second switch
Connect.
Preferably, sponge is also included, friction plate top is connected with sponge by way of bonding.
Preferably, rubber blanket is also included, workbench bottom is bonded with rubber blanket.
Preferably, height of the aperture of first through hole more than passage.
Preferably, the surface of passage is smooth surface.
Preferably, elastic component is spring.
Operation principle：When whether the coefficient of elasticity that vollyball to be tested has qualified, first by firm ready-made vollyball pass through into
Ball bucket is put on the passage in placing box, then presses first switch, the first electromagnet and U-shaped electromagnet is powered, the first electricity
Magnet and U-shaped electromagnet carry opposite electricity, while promoting push pedal to the right, push pedal to move right and drive the first electromagnetism by push rod
Iron moves right, when the first electromagnet moves right when being contacted with U-shaped electromagnet, now the first electromagnet and U-shaped electromagnet
It is attracting.Then pull push pedal to left movement, push pedal makes the first electromagnet and U-shaped electromagnet to left movement to left movement, U-shaped electromagnetism
The second through hole is crossed in fix bar to left movement by Tie Tong, elastic component compression, sliding block on slide rail to left movement, when making push pedal to the left
After moving to appropriate location, second switch, the first electromagnet and the power-off of U-shaped electromagnet, the first electromagnet and U-shaped electromagnet are pressed
It is no longer attracting, now elastic component bounce-back, the U-shaped electromagnet of resilient element urges moves right, and U-shaped electromagnet moves right the row of touching
Ball, by vollyball is by passage, first through hole and goes out the ejection of ball bucket, then certain camber line of being dished out after vollyball ejection is beaten in baffle plate
On the froth bed in left side, froth bed is recessed, get a hole, vollyball falls on friction plate after being contacted with froth bed,
There is certain frictional force on friction plate, vollyball is not always slided on friction plate, vollyball is quickly stopped, such as
This repeats aforesaid operations, and another new vollyball is dished out, and after making vollyball that hole one by one is laid on froth bed, can pass through
Whether the height in hole, so qualified to judge the elastic force that these vollyballs have on test froth bed.
Because also including sponge, friction plate top is connected with sponge by way of bonding, so when vollyball is dished out
Not enough cannot far beat on baffle plate, vollyball can fall the sponge on friction plate, sponge is sunk, now can be by measuring vollyball
Whether the arc length dished out is qualified to judge the elastic force that vollyball has, while sponge is prevented from vollyball slip, can be by vollyball
Stabilization.
Because also including rubber blanket, workbench bottom is bonded with rubber blanket, so work as to need to promote placing box or so to move
Dynamic, rubber blanket is prevented from destroying base plate when workbench is slided, while being made a noise with base plate friction when preventing workbench from sliding.
Because more than the height of passage, vollyball, will not be due to touching when dishing out with placing box in the aperture of first through hole
Touch and cannot eject, so as to influence the measurement of vollyball coefficient of elasticity.
Because the surface of passage is smooth surface, can reduce vollyball when flying out with the friction of passage so that surveying
Amount result is more accurate.
(3) beneficial effect
The present invention dishes out by by vollyball, so that vollyball is left a trace on froth bed, by measuring hole on froth bed
Height it is whether qualified to judge the elastic force that vollyball has, the quantity of the unqualified vollyball of quality is reduced so as to reach, warp is reduced
Ji loss, the effect for reducing the personnel's injury caused because vollyball quality is unqualified.
Brief description of the drawings
Fig. 1 is the first dimensional structure diagram of the invention.
Fig. 2 is the main structure diagram of placing box of the present invention.
Fig. 3 is the left view structural representation of baffle plate of the present invention and froth bed.
Fig. 4 is second dimensional structure diagram of the invention.
Fig. 5 is the third dimensional structure diagram of the invention.
Mark in accompanying drawing for：1- base plates, 2- workbench, 3- placing boxes, 4- is scored and struggles against, and 5- first switches, 6- second is opened
Close, 7- first through hole, 8- goes out ball bucket, 9- push rods, 10- push pedals, 11- guide holes, 12- slide rails, 13- sliding blocks, 14-U type electromagnet,
The through holes of 15- second, 16- elastic components, the electromagnet of 17- first, 18- third through-holes, 19- fix bars, 20- passages, 21- friction plates,
22- baffle plates, 23- top boards, 24- froth beds, 25- sponges, 26- rubber blankets.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1
A kind of device for accurately measuring for vollyball elasticity, as Figure 1-5, includes base plate 1, workbench 2, placing box
3rd, score bucket 4, first switch 5, second switch 6, go out ball bucket 8, push rod 9, push pedal 10, slide rail 12, sliding block 13, U-shaped electromagnet 14,
Elastic component 16, the first electromagnet 17, fix bar 19, passage 20, friction plate 21, baffle plate 22, top board 23 and froth bed 24, base plate 1
Top left side is welded with workbench 2, and the mode that the top of workbench 2 is bolted is connected with placing box 3, before placing box 3
Side is connected with first switch 5 and second switch 6 by way of screw, and first switch 5 is located at the left of second switch 6, places
The mode that the top of case 3 is bolted is connected with goal bucket 4, and the right side of placing box 3 is provided with first through hole 7, the right side of placing box 3
The mode that side is bolted is connected with out ball bucket 8, goes out ball bucket 8 positioned at the right side of first through hole 7, the left side in placing box 3
The mode that upper and lower part is bolted is connected with slide rail 12, and slidingtype is connected with sliding block 13, upper and lower two on slide rail 12
The mode being bolted between the sliding block 13 of side is connected with U-shaped electromagnet 14, and the middle part of U-shaped electromagnet 14 is provided with the second through hole
15, the left side in placing box 3 is provided with two guide holes 11, and the inner sliding type of guide hole 11 is connected with push rod 9, and the left end of push rod 9 is welded with
Push pedal 10, the mode that the right-hand member of push rod 9 is bolted is connected with the first electromagnet 17, and the middle part of the first electromagnet 17 is provided with the
Three through holes 18, the left side central portion in placing box 3 is welded with fix bar 19, and the left side in placing box 3 is welded with elastic component 16, fixed
Bar 19 passes through elastic component 16, the through hole 15 of third through-hole 18 and second, by hanging between the right-hand member of elastic component 16 and U-shaped electromagnet 14
The mode of hook is connected, and the right side of placing box 3 is provided with passage 20, and the right-hand member of passage 20 is located in first through hole 7, the upper end of passage 20
Positioned at 4 bottoms of bucket of scoring, the left end of passage 20 is located at the right of U-shaped electromagnet 14, and the top right side of base plate 1 is bolted
Mode is connected with friction plate 21, and the mode that the right-hand member of friction plate 21 is bolted is connected with baffle plate 22, the left side of baffle plate 22 bonding
Have a froth bed 24, the top of baffle plate 22 is connected with top board 23 by way of welding, the first electromagnet 17 and U-shaped electromagnet 14 with
First switch 5 and second switch 6 have connection.
Sponge 25 is also included, the top of friction plate 21 is connected with sponge 25 by way of bonding.
Rubber blanket 26 is also included, the bottom of workbench 2 is bonded with rubber blanket 26.
Height of the aperture of first through hole 7 more than passage 20.
The surface of passage 20 is smooth surface.
Elastic component 16 is spring.
Operation principle：When whether the coefficient of elasticity that vollyball to be tested has qualified, first by firm ready-made vollyball pass through into
Ball bucket 4 is put on the passage 20 in placing box 3, then presses first switch 5, makes the first electromagnet 17 and U-shaped electromagnet 14 logical
Electricity, the first electromagnet 17 and U-shaped electromagnet 14 carry opposite electricity, while promoting push pedal 10 to the right, push pedal 10 moves right logical
Crossing push rod 9 drives the first electromagnet 17 to move right, when the first electromagnet 17 moves right when being contacted with U-shaped electromagnet 14,
Now the first electromagnet 17 and U-shaped electromagnet 14 are attracting.Then pull push pedal 10 to left movement, push pedal 10 makes first to left movement
, to left movement, U-shaped electromagnet 14 passes through the second through hole 15 in fix bar 19 to left movement for electromagnet 17 and U-shaped electromagnet 14,
Elastic component 16 compresses, and sliding block 13, to left movement, after push pedal 10 is moved to appropriate location to the left, presses second on slide rail 12
Switch 6, the first electromagnet 17 and U-shaped electromagnet 14 are powered off, and the first electromagnet 17 and U-shaped electromagnet 14 are no longer attracting, now bullet
Property part 16 rebounds, and elastic component 16 promotes U-shaped electromagnet 14 to move right, and U-shaped electromagnet 14 moves right and touches vollyball, will arrange
Ball is by passage 20, first through hole 7 and goes out ball bucket 8 and ejects, certain camber line of being dished out after vollyball ejection, then beats left in baffle plate 22
On the froth bed 24 of side, froth bed 24 is recessed, get a hole, vollyball falls in friction after being contacted with froth bed 24
On plate 21, there is certain frictional force on friction plate 21, vollyball is not always slided on friction plate 21, can so make vollyball
Quickly stop, so repeatedly aforesaid operations, another new vollyball is dished out, vollyball is laid one by one on froth bed 24
Whether Kong Hou, can so qualified to judge the elastic force that these vollyballs have by testing the height in hole on froth bed 24.
Because also including sponge 25, the top of friction plate 21 is connected with sponge 25 by way of bonding, so working as vollyball
Not enough cannot far be beaten on baffle plate 22 when dishing out, vollyball can fall the sponge 25 on friction plate 21, sponge 25 is sunk, now can
It is enough whether qualified to judge the elastic force that vollyball has by measuring the arc length that vollyball dishes out, while the row of being prevented from of sponge 25
Ball is slided, can be by vollyball stabilization.
Because also including rubber blanket 26, the bottom of workbench 2 is bonded with rubber blanket 26, so work as to need to promote placing box 3
Move left and right, rubber blanket 26 be prevented from workbench 2 slide when destroy base plate 1, while prevent workbench 2 slide when with base plate 1
Friction makes a noise.
Because the aperture of first through hole 7 more than passage 20 height, vollyball when dishing out, will not due to placing box
3 touch and cannot eject, so as to influence the measurement of vollyball coefficient of elasticity.
Because the surface of passage 20 is smooth surface, can reduce vollyball when flying out with the friction of passage 20 so that
Make measurement result more accurate.
Embodiment described above only expresses the preferred embodiment of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations, improvement can also be made and substituted, these belong to this hair
Bright protection domain.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (6)
1. it is a kind of for vollyball elasticity device for accurately measuring, it is characterised in that include base plate (1), workbench (2), place
Case (3), score bucket (4), first switch (5), second switch (6), go out ball bucket (8), push rod (9), push pedal (10), slide rail (12),
Sliding block (13), U-shaped electromagnet (14), elastic component (16), the first electromagnet (17), fix bar (19), passage (20), friction plate
(21), baffle plate (22), top board (23) and froth bed (24), base plate (1) top left side are welded with workbench (2), workbench (2) top
The mode that portion is bolted is connected with placing box (3), and the front side of placing box (3) is connected with first by way of screw and opened
(5) and second switch (6) are closed, first switch (5) is bolted positioned at the left of second switch (6), placing box (3) top
Mode be connected with goal bucket (4), be provided with first through hole (7) on the right side of placing box (3), the right side of placing box (3) passes through bolt
The mode of connection is connected with out ball bucket (8), goes out ball bucket (8) on the left side in the right side of first through hole (7), placing box (3)
The mode that portion and bottom are bolted is connected with slide rail (12), and slidingtype is connected with sliding block (13) on slide rail (12), on
The mode being bolted between the sliding block (13) of lower both sides is connected with U-shaped electromagnet (14), and U-shaped electromagnet (14) middle part is opened
There is the second through hole (15), the left side in placing box (3) is provided with two guide holes (11), and guide hole (11) inner sliding type is connected with push rod
(9), the left end of push rod (9) is welded with push pedal (10), and the mode that the right-hand member of push rod (9) is bolted is connected with the first electromagnetism
Iron (17), the first electromagnet (17) middle part is provided with third through-hole (18), and the left side central portion in placing box (3) is welded with fix bar
(19), the left side in placing box (3) is welded with elastic component (16), and fix bar (19) is through elastic component (16), third through-hole (18)
With the second through hole (15), the right-hand member of elastic component (16) between U-shaped electromagnet (14) hook by way of be connected, placing box
(3) passage (20) is provided with the right side of, the right-hand member of passage (20) is located in first through hole (7), the upper end of passage (20) is located at scores
Bucket (4) bottom, the left end of passage (20) is located at the right of U-shaped electromagnet (14), and base plate (1) top right side is bolted
Mode is connected with friction plate (21), and the mode that friction plate (21) right-hand member is bolted is connected with baffle plate (22), baffle plate (22)
Left side is bonded with froth bed (24), and baffle plate (22) top is connected with top board (23), the first electromagnet (17) by way of welding
There is connection with first switch (5) and second switch (6) with U-shaped electromagnet (14).
2. it is according to claim 1 it is a kind of for vollyball elasticity device for accurately measuring, it is characterised in that also include sea
Continuous (25), friction plate (21) top is connected with sponge (25) by way of bonding.
3. it is according to claim 1 it is a kind of for vollyball elasticity device for accurately measuring, it is characterised in that also include rubber
Rubber cushion (26), workbench (2) bottom is bonded with rubber blanket (26).
4. it is according to claim 1 it is a kind of for vollyball elasticity device for accurately measuring, it is characterised in that first through hole
(7) height of the aperture more than passage (20).
5. it is according to claim 1 it is a kind of for vollyball elasticity device for accurately measuring, it is characterised in that passage (20)
Surface is smooth surface.
6. it is according to claim 1 it is a kind of for vollyball elasticity device for accurately measuring, it is characterised in that elastic component (16)
It is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052239.9A CN106768739A (en) | 2016-11-24 | 2016-11-24 | A kind of device for accurately measuring for vollyball elasticity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611052239.9A CN106768739A (en) | 2016-11-24 | 2016-11-24 | A kind of device for accurately measuring for vollyball elasticity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106768739A true CN106768739A (en) | 2017-05-31 |
Family
ID=58912407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611052239.9A Pending CN106768739A (en) | 2016-11-24 | 2016-11-24 | A kind of device for accurately measuring for vollyball elasticity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768739A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5575482A (en) * | 1994-12-02 | 1996-11-19 | Butler, Jr.; Bill | Sports ball launcher |
| CN101858819A (en) * | 2010-05-10 | 2010-10-13 | 高铁检测仪器（东莞）有限公司 | Anti-elasticity testing instrument for balls and testing method thereof |
| CN201688958U (en) * | 2010-05-10 | 2010-12-29 | 高铁检测仪器（东莞）有限公司 | Clamping structure for ball resilience tester |
| CN202221365U (en) * | 2011-07-15 | 2012-05-16 | 燕山大学 | Tester for testing elasticity of table tennis balls and table tennis rackets |
| CN203518955U (en) * | 2013-10-10 | 2014-04-02 | 山东工商学院 | Tennis ball pressure resistance deformation laser detection device |
| CN205516369U (en) * | 2016-02-17 | 2016-08-31 | 陈果 | Volleyball smash service technical motion training ware |
-
2016
- 2016-11-24 CN CN201611052239.9A patent/CN106768739A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5575482A (en) * | 1994-12-02 | 1996-11-19 | Butler, Jr.; Bill | Sports ball launcher |
| CN101858819A (en) * | 2010-05-10 | 2010-10-13 | 高铁检测仪器（东莞）有限公司 | Anti-elasticity testing instrument for balls and testing method thereof |
| CN201688958U (en) * | 2010-05-10 | 2010-12-29 | 高铁检测仪器（东莞）有限公司 | Clamping structure for ball resilience tester |
| CN202221365U (en) * | 2011-07-15 | 2012-05-16 | 燕山大学 | Tester for testing elasticity of table tennis balls and table tennis rackets |
| CN203518955U (en) * | 2013-10-10 | 2014-04-02 | 山东工商学院 | Tennis ball pressure resistance deformation laser detection device |
| CN205516369U (en) * | 2016-02-17 | 2016-08-31 | 陈果 | Volleyball smash service technical motion training ware |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207055567U (en) | Cause minitype animal experiment brainpan damage percussion device | |
| CN105842088B (en) | A kind of vertical impact testing machine | |
| CN104307156B (en) | badminton training plate | |
| CN109507044A (en) | A kind of bumper uses the impact test equipment of material | |
| US4067571A (en) | Stance training apparatus | |
| CN106768739A (en) | A kind of device for accurately measuring for vollyball elasticity | |
| CN202620641U (en) | Device for practicing high kick and long kick in tae kwon do | |
| CN105749517A (en) | Table tennis table for teaching and training | |
| CN105719538A (en) | Momentum conservation verification device based on magnetic powder display | |
| CN205612991U (en) | Ping -pong ball drop point accurately practicing and ball collecting net rack | |
| CN107320107A (en) | A kind of healthy sign detection device based on seat trunk bending forwards | |
| CN207149147U (en) | The controllable toy brainpan damage percussion device of dynamics | |
| CN108847093A (en) | A kind of physics teaching inclined throw movements experimental demonstration device | |
| CN105013161A (en) | Volleyball smash training device | |
| CN208481929U (en) | A kind of shuttlecock training auxiliary device | |
| CN206040003U (en) | Projectile motion presentation device | |
| CN207991980U (en) | A kind of hardness test device of badminton racket rod | |
| CN204143552U (en) | A kind of Wrist force measuring machine | |
| CN210963770U (en) | Device for taekwondo leg method technical training | |
| TWI689337B (en) | Pedal platform structure of ski machine | |
| CN202410084U (en) | Golf blow mat | |
| CN102886136A (en) | Golf coach station | |
| CN207964551U (en) | A kind of football water absorption test machine | |
| CN206428401U (en) | Needle for setting up fabrics crochet hook device | |
| CN204121705U (en) | Shuttlecock training board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
|
| WD01 | Invention patent application deemed withdrawn after publication |