EP1020207A1 - Appareil pour lancer des ballons - Google Patents

Appareil pour lancer des ballons Download PDF

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Publication number
EP1020207A1
EP1020207A1 EP00100649A EP00100649A EP1020207A1 EP 1020207 A1 EP1020207 A1 EP 1020207A1 EP 00100649 A EP00100649 A EP 00100649A EP 00100649 A EP00100649 A EP 00100649A EP 1020207 A1 EP1020207 A1 EP 1020207A1
Authority
EP
European Patent Office
Prior art keywords
ball
piston
lever
cylinder
pressure
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.)
Withdrawn
Application number
EP00100649A
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German (de)
English (en)
Inventor
Karl Hugo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1020207A1 publication Critical patent/EP1020207A1/fr
Withdrawn legal-status Critical Current

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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
    • A63B69/40—Stationarily-arranged devices for projecting balls or other bodies
    • A63B69/409—Stationarily-arranged devices for projecting balls or other bodies with pneumatic ball- or body-propelling means
    • 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
    • A63B69/002—Training appliances or apparatus for special sports for football

Definitions

  • the present invention relates to a ball shooting device, which in particular as an automatic penalty training device for soccer goalkeepers can be used.
  • a ball shooting device for soccer balls is e.g. from DE-A-3404126 known. It has a swing arm and a shooting ramp for the ball to be shot.
  • the drive of the striking arm includes a double-acting pneumatic cylinder with a fixed piston rod Ten bar is connected. The straight rack movement is over three gears converted into a rotary motion.
  • a fall arrester holds the striking arm until the pressure in the cylinder is approximately 3 to 4 bar. First then the fall arrester releases and the striking arm moves towards the ball accelerates. The accelerated beater arm always describes that same circular path in the same plane.
  • the firing ramp i.e. by changing the point of impact of the Beating arms on the ball, different shooting situations are said to be adjustable his.
  • a ball shooting device for soccer, volleyball, basketball, handball balls is also described in the German utility model DE 296 20 484 U1. It also has a pivotable about a horizontal axis Impact arm as an impact element.
  • the striker arm actuator includes a coil spring and a double-acting pneumatic cylinder, which is connected to a refillable compressed air tank.
  • the Pneumatic cylinder and the coil spring are connected in series and in the Connected to the latter near the pivot axis of the striking arm.
  • the Triggering takes place by electromagnetic release of a catch hook, the Holds the striking arm until the shot is released.
  • the accelerated blow arm always describes the same circular path in the same plane.
  • the on The shot energy transferred to the ball can be controlled by the pressure in the pneumatic cylinder to be influenced.
  • the ball to be shot lies on a guide element located on top of the ball shooting device and both horizontally, as well as vertically adjustable. The shot direction in both vertical, as well as in the horizontal direction through the point of impact of the impact element
  • the ball shooting devices are for a systematic penalty keeper training from DE 34 04 126 and DE 296 20 484 U1 relatively bad Suitable because: (1) the ball is in an unrealistic position for the goalkeeper the ball shooting device lies; (2) Angular shots can be set relatively imprecisely are; (3) the goalkeeper can follow exactly in which shooting position before the shot the ball is moved so that it follows the trajectory of the ball in the can calculate in advance, and (4) the shot strength can only be set imprecisely.
  • Another ball shooting device for soccer balls is from DE-A-2525974 known.
  • This device has a push device with a through a Pneumatic cylinder linearly accelerated ram.
  • the pusher is pivoted at its rear end about a vertical axis.
  • the swiveling impact device has a height-adjustable device Launch pad for soccer. So that the goalkeeper during penalty practice neither the angle adjustment of the impact device, nor the height adjustment the launcher sees, launcher and pusher are behind hidden in a fringe curtain.
  • this ball shooting device is also relatively unsuitable, there: (1) the ball is not necessarily above the penalty point, and (2) the The goalkeeper has no eye contact with the ball and therefore does not look before the shot can focus on the ball.
  • the object of the present invention is to provide a ball shooting device create the much better for a systematic penalty keeper training suitable is. This object is achieved according to the invention by a device Claim 1 solved.
  • a ball shooting device comprises in a known manner a shock device for transmitting a shock pulse to a ball, and a receiving device which for the ball to be shot Firing position reproducibly determined.
  • the impact device in a horizontal plane by an angle less than 180 ° around the Firing position pivotable, and the ball shooting device additionally includes a screen, which the pivotable impact device in the firing direction hides that only the ball to be shot is visible.
  • angle shots are relatively accurate are adjustable without the goalkeeper being able to see in advance which Towards the ball being shot. It is particularly advantageous that the Goalkeeper always has eye contact with the ball. So he can get full before the shot focus on the ball that is always on the same launch point.
  • the screen is between the receiving device and impact device near the floor interrupted by an opening, which is slightly smaller than a soccer ball. So there is a soccer ball in the Cradle, it obscures the view of the opening in the goalkeeper the screen, so that for the goalkeeper the ball to be shot, not however the impact device is visible through the opening in the screen can hit the ball from a hidden position on the ball. As a result, the goalkeeper learns to concentrate fully on the ball so that he with a real penalty shot, it is less likely that the Penalty takers can be deceived.
  • the pushing device is behind the Screen height adjustable relative to the ball.
  • the Screen height adjustable can e.g. height adjustable be hung on a vertical column.
  • the latter is then advantageous mounted on a carriage, which is in a circular, horizontal Guide rail is movable around the firing position.
  • a sledge then preferably has a gear drive with a circular Rack on.
  • the receiving device forms a Support recess for the ball immediately above the floor, so that it for the Goalkeeper looks like the ball is right on the penalty spot lie on. This creates an extremely realistic training situation.
  • the present invention also proposes a significantly improved one Push device in front.
  • the latter includes a pressure cylinder as the main part a first piston which can be moved in a cylinder chamber.
  • a return device moves the first piston into a firing position in a first direction.
  • a pressure build-up device ensures a controlled pressure build-up in the cylinder chamber.
  • a blocking and triggering device blocked the first piston in a starting position until its targeted release.
  • an impact element After triggering, an impact element finally transmits the acceleration of the first piston as a shock impulse on the ball important feature of the improved impact device, the pressure cylinder a compression piston on the first piston in the cylinder chamber axially opposite. This compression piston then ensures one controlled pressure build-up in the cylinder chamber without the supplied compressor.
  • the triggering device is of this type designed that the first piston always in the same position in the Cylinder chamber blocked.
  • the pressure in the cylinder chamber i.e. the shot strength
  • the pressure in the cylinder chamber is then over the stroke of the compression piston and / or over a Pressure control valve set.
  • the push element advantageously comprises a two-armed lever with a Swivel that defines a horizontal axis of rotation.
  • the lower lever arm has a striking element at its free end.
  • the first piston is by means of a piston rod articulated to the lower lever arm.
  • the Return device includes an axially movable plunger that is connected to the upper Lever arm can be brought into engagement.
  • a process of ram into a first Direction pivots the lever about its horizontal axis of rotation such that the first piston in the pressure cylinder, over the piston rod, into its firing position is proceeded.
  • the return device advantageously has a linear drive on, which is assigned to the plunger such that it is the latter in the first Pushes the direction in front of it, but freely in the opposite direction is retractable.
  • the triggering device has a Snap pin on, which is in a corresponding snap recess in the plunger Blocking of the plunger can be snapped into place.
  • a spring can lock the locking pin be assigned such that they have a spring force in the latching direction on the latter exercises.
  • the triggering device can also have a linear actuator and a have single-armed lever, the lifting drive with the end of the lever arm is articulated, and the locking pin with a connecting part an elongated hole is connected to the one-armed lever.
  • the ball shooting device comprises a vertical support column, and a height-adjustable one on the support column Cassette in which the pushing device is integrated.
  • the shooting process can be triggered remotely. Concentration of the goalkeeper to train for the actual shooting are planned the screen advantageously arranged several lights, the start-up steps of a penalty taker.
  • FIGS. 1 and 2 relate to a ball shooting device according to the invention was developed especially for the penalty kick training of soccer goalkeepers.
  • a shooting apparatus is in a housing 10 12, as well as batteries 14 required for the energy supply.
  • the Gun 12 and batteries 14 are on a base plate 16 mounted, which has a pair of wheels 18.
  • the latter can either be folded up, as indicated in Fig. 1, or easily removable, so that the base plate 16 can be placed directly on the field at the penalty spot.
  • the side of the housing 10 which is aligned with the gate is in the follow referred to as the front and is in Fig. 1 and 2 with the reference numeral 22 provided.
  • This front 22 forms a front of the shooting apparatus 12 Viewing panel, which only through the floor through an opening 20, the is slightly smaller than a football 24, is interrupted.
  • a ball receiving device 26 is arranged, the task of which is for the Football 24 reproducibly set a launch position.
  • This shooting position of the football 24 e.g. by a receiving trough 28 is formed in a launching plate 29, which, according to the folding of the wheels 18, is immediately above the ground.
  • the soccer ball 22 in this recess 28 it conceals a goalkeeper in the gate the view of the opening 20 in the front 22, so that for the goalkeeper the ball to be shot, but not the shooting apparatus 12 is visible.
  • the goalkeeper's perspective it looks like the ball is 24 rest directly on the penalty spot, because the over the penalty point arranged launching plate 29 is largely covered by the turf.
  • a ball feed device 30 is arranged above the receiving device 26, which take a variety of balls and the latter individually into the Can initiate recording device 26.
  • the ball feeder 30 (which is shown very schematically) one at the Front 22 arranged vertical shaft 32, which at its lower End is closed by a motorized flap 34, and one over the Housing 10 helically arranged inclined path 35.
  • the Flap 34 When opening the Flap 34, the latter directs the lowest ball from the shaft 32 into the receiving device 26, this ball centered in the receiving trough 28 becomes.
  • a motorized finger 36 in the shaft 32 holds the following ball until the flap 34 closes the shaft 32 again. After that there the finger 36 clears the subsequent ball so that all of the balls in the ball feeder 30 move one position.
  • the mechanical structure of the gun 12 is now based on the 3 and 8 described in more detail.
  • the core of the gun 12 is one Impact device 40, which is shown in section in FIG. 3.
  • This pusher 40 comprises a cassette 42 which is adjustable in height on a vertical column 44 is led.
  • Fig. 3 one can see e.g. two vertical guide rods 46, 48 the column 44, which with corresponding guide bushes (not shown) in of the cartridge 42 work together to guide the cartridge 42 vertically to ensure along the column 44.
  • a linear actuator 50 that is upside down the column 44 is mounted and connected to the cassette 42 via a rod 52 enables the cassette 42 to be adjusted continuously.
  • the column 44 itself is mounted on a guide carriage 54 which is on a circular, horizontal guide rail 56 around the firing position P is movable. 8 shows the circular, horizontal guide rail 56, and also a circular rack 58, both of which the base plate 16 are attached.
  • the rack 58 is part of a gear drive of the guide carriage 54.
  • This gear drive includes on the Guide carriage 54 an electric motor 60 which via a belt transmission 62nd drives a gear that engages the rack 58 and the guide carriage 54 moves in its guide rail 56. It should be noted that the guide carriage 54 in the guide rail 56 at an angle of can be moved at least 37 ° around the firing position P, so that the impact device 40 from the penalty point the full width of the goal (7.3 m) can cover.
  • the swivel joint 72 defines a horizontal axis of rotation for the lever 70, the latter having a lower lever arm 74 below the pivot 72 and has an upper lever arm 76 above the pivot 72.
  • the lower Lever arm 74 has at its free end a striking element 78, which when pivoting the lever 70 in the direction of arrow 80 through the opening 20 hits the ball 24 (see also Fig. 1).
  • To the impact element 78 remains to note that it is advantageously interchangeable, so that striking elements different materials, with different shapes and weights can be used.
  • the free end of the upper lever arm 74 is over a spring 82 is connected to the cassette 42. This spring 82 transfers to the Lever 70 has a relatively weak spring moment in the direction of arrows 80 hydraulic stop cylinder 83 forms a buffer for the upper lever arm 76 on the cassette 42 in the direction of arrows 80.
  • the pressure cylinder 64 has a first piston 84, which has a Piston rod 86 and a pivot 88 connected to the lower lever arm 74 is. Note that the distance between swivel 72 and swivel 88 makes up about a third of the length of the lower lever arm 74.
  • On second piston 90 is located at the opposite end of cylinder 64. This second piston 90, hereinafter also compression cylinder 90 is called via an electric linear drive 92 in the pressure cylinder 64 adjustable. Both pistons 84 and 90 seal a cylinder chamber in cylinder 64 94 axially.
  • the return device 66 for the lever 70 has a plunger 96 which is axially displaceably mounted in a horizontal bore in the cassette, its front end being engageable with the upper lever arm 76.
  • the contact surface for the tappet on the upper lever arm 76 is advantageously by a rotatable support, e.g. a ball bearing 97 is formed.
  • the plunger 96 can be displaced in the direction of arrows 98 by means of a linear drive 100.
  • the linear drive 100 has a head 102, which in the direction of the Arrows 98 pushes the plunger 96 in front of it, this head 102 in the opposite direction However, the direction is freely retractable as it is with the rear End of the plunger 96 is not mechanically connected.
  • FIG. 10 to 12 The structure of the blocking and triggering device 68 is shown in FIG. 10 to 12 described in more detail.
  • the front end of the Ram 96 which is slidably mounted in a bore of the cassette 42, in Cross section shown.
  • a screw 104 secures the plunger 96 against rotation by engaging in a guide channel in the plunger 96.
  • the plunger On the opposite On the side, the plunger has an indentation recess 106 for a locking pin 108 on. 8, the locking pin 108 is in the locked state in the Plunger recess 106 shown.
  • This locking pin 108 is in one Bushing 110, which is firmly inserted into the cassette 42, is guided axially.
  • the reference number 112 is a Stroke drive, which is connected to the cassette 42 by means of a swivel joint 113 is attached.
  • a lifting rod 114 of the lifting drive 112 has one end Lever 116 articulated.
  • the second end of the lever 116 is in one Swivel 118 mounted on the cassette 42.
  • a connecting part 120 connects here the pin 108 with the lever 116.
  • the connecting part 120 which is firmly connected to the pin 108, an elongated hole 122 through which a Bolt 124 of the lever 116 is performed with lateral play.
  • the pressure cylinder 64 is shown enlarged. You can see that the cylinder chamber 94 formed between the two pistons 84 and 90 is connected to a valve group 132 by means of a line 130.
  • This group of fittings includes e.g. a manometer 134, a pressure sensor 136 and an electromagnetically actuated switching valve 138. The pressure sensor and the switching valve 138 are connected to a control unit 140.
  • linear drives 50, 92 and 100 e.g. Spindle gear or electrohydraulic Lift cylinders can be, preferably with an operating voltage of 24V operate.
  • FIG. 4 the gun 12 is in a rest position.
  • the upper lever arm 76 abuts the hydraulic stop cylinder 83 and will held in place by a slight bias of the spring 82.
  • the Blocking and triggering device 68 is in that shown in FIG. 10 Condition, i.e. the lifting rod 114 is retracted and the locking pin 108 is by the spring integrated in the bushing 110 against the surface of the ram 96 pressed, which is completely inserted into the cassette 42.
  • Both pistons 84 and 90 are in an end position at their respective ends of the impression cylinder 64.
  • the cylinder chamber 94 which has its maximum volume, stands over line 130 and switching valve 138 (both in FIG. 9 shown) in connection with the atmosphere.
  • the shooting apparatus 12 is in an intermediate position.
  • the linear drive 100 is actuated so that the latter pushes the plunger 96 in the direction of arrow 98 moves.
  • the end position of the plunger 96 results from Locking the locking pin 108 into the locking recess 106 in the plunger 96, wherein the latching movement is generated by the spring integrated in the bushing 110 becomes.
  • the connecting part 120 moves relative to the bolt 124 Lever 116 until the rear end of the elongated hole 122 abuts the pin 124.
  • the corresponding end position of the blocking and releasing device 68 is shown in FIG. 11 shown.
  • the plunger 96 is supported in its movement in the direction of the Arrows 98 on the ball bearing 97 on the upper lever arm 76 and gives the lever 70 with minimal friction losses in the direction of arrow 80 'around Swivel joint 88.
  • the lower lever arm 74 presses during this pivoting movement via the piston rod 86, the first piston 84 into that shown in FIG. 5 End position, shortly before the pipe 130 flows into the cylinder chamber 94.
  • This position of the pressure cylinder 64 is also shown in FIG. 9. Note that the pressure cylinder 64 behind the first piston 84 vents 142 which has the space behind the piston 84 immediately connect with the atmosphere.
  • the switching valve 138 is already in front closed when the linear drives 100 are actuated, the piston 84 builds when moving into its position shown in Fig. 5 already a slight Overpressure in the cylinder chamber 94.
  • Fig. 6 the gun 12 is in a ready-to-fire position. To achieve this position ready to fire, from the intermediate position 5, the following two steps are taken. First, the linear actuator 92 was actuated to blow the air over the compression piston 90 in the cylinder chamber 94 with the switching valve 138 closed compress. Second, the linear actuator 100 was actuated around the head 102 to return to its starting position in the direction of arrows 98 '. The The position of the blocking and releasing device 68 remains the same as in FIG. 11. The gun 12 is now ready to fire. It should be noted that none Shot can be triggered as long as the head 102 is not in its initial position is to be reduced. This is a security against an unwanted Triggering the gun 12.
  • the shooting apparatus 12 is in the end position after the launch of the Balls shown. 12 shows the blocking and triggering device 68 shortly after the triggering process of the launch.
  • the Lift drive 112 actuated so that its lifting rod 114 is extended.
  • the Lever 116 is pivoted about bearing 118 in the direction of arrow 118 ', the locking pin 108 via the connector 120 through the Bolt 124 on the lever 116 out of the locking recess 106 of the plunger 96 is pulled and releases the latter.
  • the lever 70 is no longer through the plunger 96 blocked and can in the direction of arrow 80 around the pivot bearing 88 pan.
  • the hydraulic stop cylinder 83 forms a buffer for the upper lever arm 76, which the accelerated lever 70th stops in its pivoting movement before the piston 84 at the bottom of the Printing cylinder 94 strikes.
  • the accelerated by the upper lever arm 76 Ram 96 is advantageously provided by an air cushion 144 and possibly an additional one Damper element between its rear end and the head 102 of the Linear drive 100 braked before it hits this head 102.
  • the shooting apparatus is returned to the 4 brought to rest.
  • the switching valve 138 is opened and the compression piston 90 in its rear end position in the pressure cylinder 64 method.
  • the lifting rod 114 is in the blocking and triggering device 68 retracted.
  • the acceleration of the lever 70, and thus the size of the shock pulse which is transferred to the ball is determined by the pressure in the cylinder chamber 94 set.
  • This pressure setting takes place e.g. via a stroke control of the linear drive 92, or also by a stroke control of the linear drive in a closed control loop, in the latter case the stroke of the linear drive 92 is both the controlled variable and the manipulated variable.
  • the pressure in the However, cylinder chamber 94 can also be closed directly Control loop to be regulated.
  • the pressure ( controlled variable) in the Cylinder chamber 94 detected by pressure sensor 136.
  • the stroke of the linear drive 92 forms the pressure control circuit Manipulated variable, i.e.
  • the linear drive has a second embodiment of such a pressure control circuit 92 a constant stroke, i.e. the compression piston 90 is in Move direction of the piston 84 to an end position and generates one maximum pressure in the cylinder chamber 94. This pressure is then a in the pressure control valve (not shown) provided for the valve group 132 reduced until the desired pressure in the cylinder chamber 94 is reached.
  • the second cylinder 90 can be dispensed with.
  • the compression work will then solely by the piston 84 when returning the lever 70 through the Return device 66 provided.
  • the length of the pressure cylinder 64 shortened and its diameter increased accordingly, so that Compression ratio and the maximum volume of the cylinder chamber 94 stay at least the same.
  • the embodiment described with reference to the figures has additional Compression piston 90 greater operational safety because of Pressure in the cylinder chamber 94 is generated shortly before firing can.
  • the time in which the ball shooting device is in tension Condition is reduced to a minimum, which of course increases the risk of an accident also reduced by undesired triggering of the ball shooting device.
  • the ball shooting device for the penalty kick training of soccer goalkeepers used, it is set up so that the launching position of the Balls is located exactly above the penalty point and the central axis of the Machine is aligned with the center of the gate. Then the Wheels 18 folded up, and balls filled into the ball feed device 30. The The machine is then operated as follows. First, the lever 70 through the Return device 66 pushed back into its extended position. Subsequently a ball is passed through the ball feeder 30 into the ball receiving device 26 initiated. This ball 24 now obscures the view of the goalkeeper Opening 20 and thus on the lever 70.
  • the horizontal launch angle of the ball 24, by moving the guide carriage 54 in the Guide rail 56, and the vertical launch angle, by moving the Cassette 42 along column 44, can be set without the goalkeeper can perceive these movements.
  • the pressure build-up in the pressure cylinder 64 takes place shortly before triggering the launch via the compression piston 90.
  • the shot strength is adjusted as described above by limiting the pressure in the cylinder chamber 94.
  • the process these individual steps are advantageously controlled by a computer.
  • a sequence of shots, with the firing angles and the shot strengths of the individual shots, either pre-programmed or through a random generator can be generated.
  • the top light 150 shows the goalkeeper indicates that the machine is ready to fire, i.e. that the cylinder chamber 94 under There is pressure and the gun is e.g. via a remote control (not shown) can be released to shoot the ball.
  • the gun 12 drives the head 102 only now in its end position shown in FIG. 6).
  • the lower Lights 152 light up successively from top to bottom and simulate the Start of a penalty taker. The shot is taken immediately after it lights up of the bottom of the lights 152 triggered. These lights 152 are said to Goalkeepers help to concentrate fully on shooting the ball.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP00100649A 1999-01-14 2000-01-13 Appareil pour lancer des ballons Withdrawn EP1020207A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU90339 1999-01-14
LU90339 1999-01-14

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EP1020207A1 true EP1020207A1 (fr) 2000-07-19

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EP00100649A Withdrawn EP1020207A1 (fr) 1999-01-14 2000-01-13 Appareil pour lancer des ballons

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503393A (en) * 1981-10-05 1985-03-05 Exxon Production Research Co. Method and apparatus for detecting flaws in the threaded end of an elongate member using electromagnetic excitation and an automated scanning sensor
CN108371804A (zh) * 2018-03-31 2018-08-07 平湖市酷风文体用品有限公司 一种网球发球机中发球通道的上下调节机构
CN110302518A (zh) * 2019-06-14 2019-10-08 成都陆道原乡智能科技有限公司 自动足球发球机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041251A5 (fr) * 1969-04-24 1971-01-29 James Bernard
US4122822A (en) * 1975-12-11 1978-10-31 Kurt Scheiwiller Spring type apparatus for the projecting of footballs and the like
US4365612A (en) * 1979-05-07 1982-12-28 Acec Device for propelling an inflated ball by means of an elastic impact
GB2118443A (en) * 1982-04-08 1983-11-02 Sumsk Kh Polt I Ball throwing machine
EP0520929A1 (fr) * 1991-06-24 1992-12-30 Jean-Pierre Magnone Appareil électromécanique d'entraînement pour lancer des ballons, notamment de football
WO1995032033A1 (fr) * 1994-05-25 1995-11-30 Beat Jaeger Machine d'ejection de ballons programmable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2041251A5 (fr) * 1969-04-24 1971-01-29 James Bernard
US4122822A (en) * 1975-12-11 1978-10-31 Kurt Scheiwiller Spring type apparatus for the projecting of footballs and the like
US4365612A (en) * 1979-05-07 1982-12-28 Acec Device for propelling an inflated ball by means of an elastic impact
GB2118443A (en) * 1982-04-08 1983-11-02 Sumsk Kh Polt I Ball throwing machine
EP0520929A1 (fr) * 1991-06-24 1992-12-30 Jean-Pierre Magnone Appareil électromécanique d'entraînement pour lancer des ballons, notamment de football
WO1995032033A1 (fr) * 1994-05-25 1995-11-30 Beat Jaeger Machine d'ejection de ballons programmable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503393A (en) * 1981-10-05 1985-03-05 Exxon Production Research Co. Method and apparatus for detecting flaws in the threaded end of an elongate member using electromagnetic excitation and an automated scanning sensor
CN108371804A (zh) * 2018-03-31 2018-08-07 平湖市酷风文体用品有限公司 一种网球发球机中发球通道的上下调节机构
CN110302518A (zh) * 2019-06-14 2019-10-08 成都陆道原乡智能科技有限公司 自动足球发球机

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