WO1997017112A1 - An apparatus for teaching the serve in tennis - Google Patents
An apparatus for teaching the serve in tennis Download PDFInfo
- Publication number
- WO1997017112A1 WO1997017112A1 PCT/SK1995/000006 SK9500006W WO9717112A1 WO 1997017112 A1 WO1997017112 A1 WO 1997017112A1 SK 9500006 W SK9500006 W SK 9500006W WO 9717112 A1 WO9717112 A1 WO 9717112A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ball
- indicator
- feed opening
- attached
- delivery arm
- Prior art date
Links
- 238000011156 evaluation Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B69/00—Training appliances or apparatus for special sports
- A63B69/38—Training appliances or apparatus for special sports for tennis
- A63B69/385—Training appliances or apparatus for special sports for tennis for practising the serve
Definitions
- the invention relates to an apparatus for teaching the serve in tennis It enables the teaching, practicing and training of the serve in tennis in an optimal way for vanous levels of the abilities, technical and physical maturates, as well as age differentials of the student
- the coach and graphical form namely without the influence of human factor of the student obtain an immediate about the course of practice in an optical and measured quantities, which insures the unified method of the measurement, observation and evaluation of the obtained results
- the performance level of the serve also enables the long term evaluation of training, as well as the objective comparison of efficiency of a single participant in regards to the total results as well as the single technical components of the serve It deals with the mechanical - electronic apparatus, which consists of the base plate, which is movable in any direction by casters
- On the baseplate there are a hydraulic pump with an oil tank, the feed cable container, the main pole and its hydraulic system, the supporting poles, the ladder and service platform under which is placed the distribution box
- Mounted on the movable hydrauhc pole are the balance weight, the delivery
- the apparatus for teaching the serve eliminates the above stated deficiencies The essence rests in combining the mechanical exercise system, which enables the whole teaching of the flat serve in five training stages In each training session the coach and student are immediately informed of the results
- the apparatus for teaching the serve consists of the baseplate where there are a main pole and its hydraulic system, which is connected with the hydraulic tubes to the hydraulic pump with the oil tank and supporting poles with the ladder, where the service platform with the distribution box is mounted At the same level opposite the distribution box is a computer with a control panel and display screen At the top of the movable hydraulic pole attached in a horizontal plane is the delivery arm held by the supporting plate On the opposite side there is a counter-balance, a ball container in which is mounted the electromotor with the rotor The delivery arm ends with a ball feed opening where are fastened the ball suspender, radar, ball target and ball target indicator Also attached on the delivery arm are the indicator bar and deflector bar The indicator bar is attached at the bottom of the supporting plate, where the ball toss indicator and ball hitting indicator are
- the apparatus enables us to teach the ball toss, motion of the playing arm, the optimal hitting time of the playing arm, combining the optimal tossing time with the optimal hitting time, and transition from the Serve Tutor to an unaided serve
- the information is rendered immediately, namely in practicing ball toss accuracy, practicing and perfecting the motion of the playing arm - the time of the hitting phase and ball speed after the serve, in practicing the optimal hitting time of the playing arm - the time of the hitting phase and ball speed after the serve, in practicing combining the optimal tossing time with the optimal hitting time - the serve executed by the student only, the serve executed with assistance of the Serve Tutor and ball speed after the serve
- figure 1 the assembly drawing of the Serve Tutor illustrates the apparatus for teaching the serve
- figure 2 illustrates a concrete example of the apparatus submitted in three dimensional drawing from the upper cross view
- figure 3 shows the electronic evaluation system from the cross vertical view
- the Serve Tutor is shown in an example in figures 2, and 3
- the apparatus consists of the base plate 1, which has casters a on the bottom side of each corner, which allows free movement of the apparatus in a horizontal plane
- the superstructure which is presented by the main pole and its hydraulic system 2, which is reinforced by supporting poles 3
- the mam pole and its hydraulic system 2 enables the height adjustment of the ball target 14, and is made from two cylindrical poles, of which the outer is stationary and the inner is movable in a vertical plane with the assistance of the hydraulic pump 6, which is mounted with the oil tank 7 on the base plate 1 They are connected by the hydraulic tubes 8
- On top of the inner movable pole are mounted by the connecting flange the electromotor 9, rotor 10, the balance weight 29, the ball container H, and delivery arm 2 which ends with ball feed opening 13 and in ball feed opening 1J3 space is ball target indicator 17, the ball target 14 and radar 16 Under the ball feed opening 13 hanging from a rope 30 is the ball suspender 15_ on which the ball 31 is put.
- the deflector bar 23 On the delivery arm 12 above the ball feed opening 13 is the deflector bar 23, where the deflector plates 22 are placed, opposite to them are the ball toss indicator 20 and ball hitting indicator 21 on the indicator bar lj ) , which is attached on the bottom side of the supporting plate 18 of the delivery arm 12.
- the electric distribution box 24 Under the service platform 5 is the electric distribution box 24, which is fixed to it, and access to this platform 5 is enabled by the ladder 4.
- the electric supply cable and its distributor presents the feed cable 25, which goes to the distribution box 24 and its surplus is stored in the cable container 24a.
- the electronic computing control and evaluation system is made by the computer 26, the control panel 27 and display screen
- the service platform 5 is accessible by the ladder _4, and serves as a place from which the ball container H is filled.
- the ball container H is of square shape which narrows conically to the size of the rotor £, which distributes the balls into the delivery arm 12 by the rotor 1_0, which is turned by the electromotor 9.
- the electromotor 9 is located in a box, which is attached to the connecting flange on the movable hydraulic pole.
- the delivery arm 12 slopes moderately towards the ball feed opening 13, where the ball is delivered itself by its own weight to the ball feed opening 13, where is caught.
- the ball feed opening 13 is equipped with an electromagnetic device which releases the ball, which then passes through the ball target 14.
- the photoelectric switches which are a function of the ball target indicator 1_7, which indicates the accuracy of the ball toss Near the ball target 14 is located the radar 16, which measures the speed of the ball right after it has been hit.
- the ball suspender 15 Under the ball target J_4 is located the ball suspender 15, where the ball 3_1 is put on, and the rope 30 which suspends the ball 31 and puts it into the optimal position for the student.
- the indicator bar 19 and deflector bar 23 are attached to the delivery arm 2 at the practice area.
- the ball toss indicator 20 is placed on the indicator bar 19, which records height of the student's tossing arm at the moment of the ball release and the ball hitting indicator 21, which records the end of the student's hit.
- Opposite to the deflector bar 23 are the deflector plates 22 for the ball toss indicator 20 and 2J_as well as the deflector plates 22 are movable along side of the bars 19 and 23, and they are adjustable according to the needs of the student
- the electric distribution system presents the feed cable 25, who's surplus is stored in the cable container 24a and distribution box 24, where the controllers, circuit breakers, control relays, distribution network for the various devices, and connection of the computer control with the evaluation system which is formed by the computer 26, which co-ordinates all electric and electronic functions and evaluates the course of practice numerically and graphically The results are shown on the display screen 28, whereby the whole process of the practice is managed by the control panel 27
- the apparatus for teaching the serve is equally applicable for the single-part and series production, and it can be used anywhere where the practice and training of the serve in tennis takes place, especially where there are demands for high technical performance and fast learning
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Tools (AREA)
Abstract
The apparatus for teaching the serve in tennis consists of the base plate (1), where is placed the main pole and its hydraulic system (2), which is reinforced by the supporting poles (3) and hydraulic pump (6) with the oil tank (7) and the cable container (24a), where is stored a surplus of the feed cable (25), which feeds the distribution box (24) and the electromotor (9); to the supporting poles (3) is mounted the service plaform (5), and horizontal ribs (4a) form the accessible ladder (4) to the service platform (5); on top of the inner movable pole of the main pole and its hydraulic system (2) are attached to the connecting flange: the electromotor (9) with the rotor (10), the balance weight (29), the ball container (11), and delivery arm (12), which ends with the ball feed opening (13); and in a space of the ball feed opening (13) is located the ball target (14), where is situated the ball target indicator (17) and radar (16); under the ball feed opening (13) hanging from the rope (30) is the ball suspender (15) for the ball (31), whereby on the delivery arm (12) above the ball feed opening (13) is attached the deflector bar (23), where are located the deflector plates (22) and parallel on the opposite side is the indicator bar (19), where are located the movable ball toss indicator (20) and ball hitting indicator (21), and the indicator bar (19) is attached on the bottom side of the supporting plate (18) of the delivery arm (12); the electronic evaluation system and computer control are mounted between supporting poles (3), which form the computer (26), the control panel (27) and display screen (28).
Description
AN APPARATUS FOR TEACHING THE SERVE IN TENNIS "
Technical sphere
The invention relates to an apparatus for teaching the serve in tennis It enables the teaching, practicing and training of the serve in tennis in an optimal way for vanous levels of the abilities, technical and physical maturates, as well as age differentials of the student The coach and graphical form, namely without the influence of human factor of the student obtain an immediate about the course of practice in an optical and measured quantities, which insures the unified method of the measurement, observation and evaluation of the obtained results The performance level of the serve also enables the long term evaluation of training, as well as the objective comparison of efficiency of a single participant in regards to the total results as well as the single technical components of the serve It deals with the mechanical - electronic apparatus, which consists of the base plate, which is movable in any direction by casters On the baseplate there are a hydraulic pump with an oil tank, the feed cable container, the main pole and its hydraulic system, the supporting poles, the ladder and service platform under which is placed the distribution box Mounted on the movable hydrauhc pole are the balance weight, the delivery arm with the ball container, the delivery arm with the ball feed opening, the ball suspender, the ball target, the radar, the ball target indicator, the deflector bar, the indicator bar, where are situated the ball toss indicator, the ball hitting indicator and deflector plates
Till now known state of the technique
Many training aids that have been used for teaching the serve in tennis until now, have mainly been dependent on a single-purpose evaluation done visually by the coach Current practice methods which have been used with or without technical aids involve several attempts, where the student executes the ball toss to a certain height in a certain direction according to his own estimate The attempts are only approximate and unrepeated, so that in this practice step, the student does not know whether the executed attempts are correct Technical aids that have been available for practice of the serve have not facilitated
correct, immediate short and long-term evaluation, independent of humane factor
Substance o the invention
According to the innovation, the apparatus for teaching the serve eliminates the above stated deficiencies The essence rests in combining the mechanical exercise system, which enables the whole teaching of the flat serve in five training stages In each training session the coach and student are immediately informed of the results The apparatus for teaching the serve consists of the baseplate where there are a main pole and its hydraulic system, which is connected with the hydraulic tubes to the hydraulic pump with the oil tank and supporting poles with the ladder, where the service platform with the distribution box is mounted At the same level opposite the distribution box is a computer with a control panel and display screen At the top of the movable hydraulic pole attached in a horizontal plane is the delivery arm held by the supporting plate On the opposite side there is a counter-balance, a ball container in which is mounted the electromotor with the rotor The delivery arm ends with a ball feed opening where are fastened the ball suspender, radar, ball target and ball target indicator Also attached on the delivery arm are the indicator bar and deflector bar The indicator bar is attached at the bottom of the supporting plate, where the ball toss indicator and ball hitting indicator are located At the end of the delivery arm is the deflector bar, where the deflector plates are located The electric feed cable is connected to the distribution box from which the electric and electronic devices of the apparatus are fed
According to the innovation, the apparatus enables us to teach the ball toss, motion of the playing arm, the optimal hitting time of the playing arm, combining the optimal tossing time with the optimal hitting time, and transition from the Serve Tutor to an unaided serve In each training stage the information is rendered immediately, namely in practicing ball toss accuracy, practicing and perfecting the motion of the playing arm - the time of the hitting phase and ball speed after the serve, in practicing the optimal hitting time of the playing arm - the time of the hitting phase and ball speed after the serve, in practicing combining the optimal tossing time with the optimal hitting time - the serve
executed by the student only, the serve executed with assistance of the Serve Tutor and ball speed after the serve
After each practice or training the statistical data about efficiency of the training process are available, which enables a comparison with previous results as well as a mutual comparison of students The systematic usage of this apparatus reinforces student's self-confidence and speeds up growth, the apparatus is available for teaching beginners as well as advanced players The training process runs accurately according to the predetermined program as well as the individual needs of the student
Survey of figures on dravings
The innovation is made clear by the drawings in figure 1 , the assembly drawing of the Serve Tutor illustrates the apparatus for teaching the serve, figure 2 illustrates a concrete example of the apparatus submitted in three dimensional drawing from the upper cross view, figure 3 shows the electronic evaluation system from the cross vertical view
Example for realization of the invention
The Serve Tutor is shown in an example in figures 2, and 3 The apparatus consists of the base plate 1, which has casters a on the bottom side of each corner, which allows free movement of the apparatus in a horizontal plane On top of the base plate 1 the superstructure, which is presented by the main pole and its hydraulic system 2, which is reinforced by supporting poles 3 The mam pole and its hydraulic system 2 enables the height adjustment of the ball target 14, and is made from two cylindrical poles, of which the outer is stationary and the inner is movable in a vertical plane with the assistance of the hydraulic pump 6, which is mounted with the oil tank 7 on the base plate 1 They are connected by the hydraulic tubes 8 On top of the inner movable pole are mounted by the connecting flange the electromotor 9, rotor 10, the balance weight 29, the ball container H, and delivery arm 2 which ends with ball feed opening 13 and in ball feed opening 1J3 space is ball target indicator 17, the ball target 14 and radar 16 Under the ball feed opening 13 hanging from a rope 30
is the ball suspender 15_ on which the ball 31 is put. On the delivery arm 12 above the ball feed opening 13 is the deflector bar 23, where the deflector plates 22 are placed, opposite to them are the ball toss indicator 20 and ball hitting indicator 21 on the indicator bar lj), which is attached on the bottom side of the supporting plate 18 of the delivery arm 12. Under the service platform 5 is the electric distribution box 24, which is fixed to it, and access to this platform 5 is enabled by the ladder 4. The electric supply cable and its distributor presents the feed cable 25, which goes to the distribution box 24 and its surplus is stored in the cable container 24a.The electronic computing control and evaluation system is made by the computer 26, the control panel 27 and display screen
28. Manipulation and service of the apparatus according to innovation runs by the required training program, and also according to the student's needs. The service platform 5 is accessible by the ladder _4, and serves as a place from which the ball container H is filled. The ball container H is of square shape which narrows conically to the size of the rotor £, which distributes the balls into the delivery arm 12 by the rotor 1_0, which is turned by the electromotor 9. The electromotor 9 is located in a box, which is attached to the connecting flange on the movable hydraulic pole. The delivery arm 12 slopes moderately towards the ball feed opening 13, where the ball is delivered itself by its own weight to the ball feed opening 13, where is caught. The ball feed opening 13 is equipped with an electromagnetic device which releases the ball, which then passes through the ball target 14. In the ball target 14 are located the photoelectric switches, which are a function of the ball target indicator 1_7, which indicates the accuracy of the ball toss Near the ball target 14 is located the radar 16, which measures the speed of the ball right after it has been hit. Under the ball target J_4 is located the ball suspender 15, where the ball 3_1 is put on, and the rope 30 which suspends the ball 31 and puts it into the optimal position for the student. The indicator bar 19 and deflector bar 23 are attached to the delivery arm 2 at the practice area. The ball toss indicator 20 is placed on the indicator bar 19, which records height of the student's tossing arm at the moment of the ball release and the ball hitting indicator 21, which records the end of the student's hit. Opposite to the deflector bar 23 are the deflector plates 22 for the ball toss indicator 20 and 2J_as well as the deflector plates 22 are
movable along side of the bars 19 and 23, and they are adjustable according to the needs of the student
The electric distribution system presents the feed cable 25, who's surplus is stored in the cable container 24a and distribution box 24, where the controllers, circuit breakers, control relays, distribution network for the various devices, and connection of the computer control with the evaluation system which is formed by the computer 26, which co-ordinates all electric and electronic functions and evaluates the course of practice numerically and graphically The results are shown on the display screen 28, whereby the whole process of the practice is managed by the control panel 27
Possibility of industrial utilization
The apparatus for teaching the serve is equally applicable for the single-part and series production, and it can be used anywhere where the practice and training of the serve in tennis takes place, especially where there are demands for high technical performance and fast learning
List of the relative symbols on figures 1.2 and 3.
1 - base plare
1 a - carters
2 - hydraulic system
3 - supporting pole
4 - accessible pole 4a - horizontal ribs
5 - service platform
6 - hydraulic pump
7 - oil tank
8 - hydraulic tubes
9 - electromotor 10 - rotor
11 - ball container
12 - delivery arm
13 - ball feed opening
14 - ball target
15 - ball suspender
16 - radar 17 - target indicator
18 - supporting platte
19 - indicator ball
20 - movable ball toss indicator
21 - hitting indicator
22 - deflector plates
23 - deflector bar
24 - distribution box 24a - cable container
25 - feed cable
26 - computer
27 - control panel
28 - display screen
29 - balance weight
30 - hanging from a rope 31 - ball
Claims
1. The apparatus for teaching the serve in tennis charaktensed in that consists of a base plate IM, the main pole and its hydraulic system 121, which is reinforced by the supporting pole /3/, and hydraulic pump Id/ which the oil tank
111, and the cable container /24a/ where the surplus of the feed cable /25/ is stored, which feeds the distribution box /24/, and electromotor /9/, on the supporting poles 131 is attached the service platform 151, and horizontal ribs /4a/ form the accessible ladder IAI to the service platform 151, the hydraulic tubes 18/ are connected to the main pole and its hydraulic system 121 and hydraulic pump
161, the main pole and its hydraulic system 111 are attached to the connecting flange the electromotor 191 which the rotor /10/, the balance weight /29/, the ball container /11/, and delivery arm /12/, which ends with the ball feed opening /13/, in the space of the ball feed opening /13/ is the ball target /14/, and the ball target indicator /17/ and radar /16/, under the ball feed opening /13/ hanging from a rope /30/ is the ball suspender /15/ for the ball /31/, whereby the delivery arm /12/, above the ball feed opening /13/, is the deflector bar /23/, where the deflector plates /22/ are located and on the opposite side is the indicator bar /19/, where the movable ball toss indicator /20/ and ball hitting indicator /21/ are located, at which the indicator bar /19/ is attached on the bottom side of the supporting plate /18/ of the delivery arm /12/, and the electronic evaluation system and computer control are mounted between the supporting poles 131 formed by the computer /26/, the control panel /27/ and display screen /28/
2. The apparatus according to point 1 is characteπsed in the manner that on the base plate IM are attached the caters /1a/
3. The apparatus according to point 1 is characterised so that the electronic computer system formed by the computer /26/, the control panel /27/ and display screen /28/ is placed out of the exercise apparatus
4. The apparatus according to point 1 is characterised so that on the ball feed opening /13/ is put on the conical sleeve which prepares the ball /31/
5. The apparatus according to point 1 is characterised so that the electronic system formed by the computer /26/, control panel /27/ and display screen /28/ create one unit
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SK1995/000006 WO1997017112A1 (en) | 1995-11-08 | 1995-11-08 | An apparatus for teaching the serve in tennis |
| AU39446/95A AU3944695A (en) | 1995-11-08 | 1995-11-08 | An apparatus for teaching the serve in tennis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/SK1995/000006 WO1997017112A1 (en) | 1995-11-08 | 1995-11-08 | An apparatus for teaching the serve in tennis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997017112A1 true WO1997017112A1 (en) | 1997-05-15 |
Family
ID=20435941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/SK1995/000006 WO1997017112A1 (en) | 1995-11-08 | 1995-11-08 | An apparatus for teaching the serve in tennis |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU3944695A (en) |
| WO (1) | WO1997017112A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7722485B2 (en) | 2006-10-18 | 2010-05-25 | Ramesh Balasubramanyan | Tennis serve ball machine cum training device |
| US20120004055A1 (en) * | 2007-06-27 | 2012-01-05 | Ramesh Balasubramanyan | Sensor based tennis serve training apparatus |
| CN111632360A (en) * | 2020-06-12 | 2020-09-08 | 雷林泉 | Device based on serve simulation training and steerable speed of serving |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3940132A (en) * | 1974-06-13 | 1976-02-24 | Lopatto Iii John S | Tennis service instructional device |
| FR2289214A1 (en) * | 1974-10-29 | 1976-05-28 | Motion Unlimited Inc | BALL HIT TRAINER |
| NL7905283A (en) * | 1979-07-06 | 1981-01-08 | Theodorus Leus | Tennis service training appts. - has telescopic pillar carrying flexible ball suspension via longer rigid vertical rod rotatable about horizontal axis |
| DE3805309C1 (en) * | 1988-02-20 | 1989-08-24 | Franz-Josef 4791 Lichtenau De Damann | Method and apparatus for practising tennis serves |
-
1995
- 1995-11-08 WO PCT/SK1995/000006 patent/WO1997017112A1/en active Application Filing
- 1995-11-08 AU AU39446/95A patent/AU3944695A/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3940132A (en) * | 1974-06-13 | 1976-02-24 | Lopatto Iii John S | Tennis service instructional device |
| FR2289214A1 (en) * | 1974-10-29 | 1976-05-28 | Motion Unlimited Inc | BALL HIT TRAINER |
| NL7905283A (en) * | 1979-07-06 | 1981-01-08 | Theodorus Leus | Tennis service training appts. - has telescopic pillar carrying flexible ball suspension via longer rigid vertical rod rotatable about horizontal axis |
| DE3805309C1 (en) * | 1988-02-20 | 1989-08-24 | Franz-Josef 4791 Lichtenau De Damann | Method and apparatus for practising tennis serves |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7722485B2 (en) | 2006-10-18 | 2010-05-25 | Ramesh Balasubramanyan | Tennis serve ball machine cum training device |
| US20120004055A1 (en) * | 2007-06-27 | 2012-01-05 | Ramesh Balasubramanyan | Sensor based tennis serve training apparatus |
| US8262517B2 (en) * | 2007-06-27 | 2012-09-11 | Ramesh Balasubramanyan | Sensor based tennis serve training apparatus |
| CN111632360A (en) * | 2020-06-12 | 2020-09-08 | 雷林泉 | Device based on serve simulation training and steerable speed of serving |
| CN111632360B (en) * | 2020-06-12 | 2021-12-07 | 台州玖屹科技有限公司 | Device based on serve simulation training and steerable speed of serving |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3944695A (en) | 1997-05-29 |
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