EP0094267B1 - Ballwurfvorrichtung - Google Patents

Ballwurfvorrichtung Download PDF

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Publication number
EP0094267B1
EP0094267B1 EP83400731A EP83400731A EP0094267B1 EP 0094267 B1 EP0094267 B1 EP 0094267B1 EP 83400731 A EP83400731 A EP 83400731A EP 83400731 A EP83400731 A EP 83400731A EP 0094267 B1 EP0094267 B1 EP 0094267B1
Authority
EP
European Patent Office
Prior art keywords
balls
ball
rollers
head
throwing
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.)
Expired
Application number
EP83400731A
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English (en)
French (fr)
Other versions
EP0094267A1 (de
Inventor
Jean-Paul Ballerin
Alexandre Georgelin
Edmond Ballerin
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.)
Faiveley Enterprises SA
Original Assignee
Faiveley Enterprises SA
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 Faiveley Enterprises SA filed Critical Faiveley Enterprises SA
Priority to AT83400731T priority Critical patent/ATE18636T1/de
Publication of EP0094267A1 publication Critical patent/EP0094267A1/de
Application granted granted Critical
Publication of EP0094267B1 publication Critical patent/EP0094267B1/de
Expired 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
    • A63B69/406—Stationarily-arranged devices for projecting balls or other bodies with rotating discs, wheels or pulleys gripping and propelling the balls or bodies by friction
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B47/00—Devices for handling or treating balls, e.g. for holding or carrying balls
    • A63B47/02—Devices for handling or treating balls, e.g. for holding or carrying balls for picking-up or collecting
    • A63B47/025—Installations continuously collecting balls from the playing areas, e.g. by gravity, with conveyor belts
    • A63B2047/028—Installations continuously collecting balls from the playing areas, e.g. by gravity, with conveyor belts pneumatic ball transport
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/16—Table tennis

Definitions

  • the present invention relates to a device for throwing balls on a playground and in particular on a ping-pong table.
  • Known ball throwing devices for table tennis include a throwing head disposed at one end of the table, opposite the location of the player.
  • This throwing head successively sends the balls to the table, the player receives them with his racket and returns them to a screen or net for receiving the balls placed above the table, facing the throwing head.
  • This screen or net collects the balls which are then routed again to the launching head.
  • a device for throwing balls on a playing area comprising means such as a blower for continuously conveying balls towards a head.
  • throwing which comprises a pair of rollers driven in rotation capable of successively picking up the balls to project them towards the playing area.
  • the rollers of said pair are separated by a space adapted to the diameter of the balls to allow the balls engaged in this space engaging simultaneously with the two rollers of said pair.
  • a ball supply duct opens out opposite said space, and means are provided for recovering the balls launched by the player and then routing them again towards the launching head, and for individually adjusting the rotation speed of each roller.
  • the aforementioned devices are of great interest since they allow a single player to train without the need for a partner or an instructor and without having to constantly move to pick up the balls.
  • the conditions for launching the balls can be modified by varying the speed of rotation of the rollers of the launching head and by modifying the direction of launching of the balls.
  • the launching head has two rollers arranged one above the other, it is possible, by rotating these rollers at different speeds, to project the ball with "lifted” or “cut” effects "comparable to the case where the ball is thrown from a player's racket.
  • the known devices have a major drawback.
  • the inertia of the rotating rollers of the launching head it is not possible to instantly modify the conditions for launching the balls.
  • players cannot be faced with sudden and varied difficulties, and it is therefore difficult for students to progress as quickly as playing with an instructor or an experienced player.
  • the object of the present invention is to remedy the aforementioned drawback by creating a device which makes it possible to reproduce in a perfect manner, the actual conditions for launching balls, for example tennis, in particular by making it possible to instantly modify the conditions of launch of these balls.
  • this device is characterized in that the launching head comprises two pairs of rotary rollers arranged side by side, each pair of rollers being provided with a bale supply duct, and in that means are designed to convey the bales alternately in one or other of the aforementioned conduits.
  • the balls can be conveyed alternately in one or other of the spaces between each pair of rollers.
  • the launching head is pivotally mounted along a substantially vertical axis and is connected to means allowing the head to continuously scan a determined angular sector.
  • This scanning can be carried out at a more or less rapid speed, this speed and the scanning angle being modifiable according to the level of the player or of the difficulties which it is wished to impose on him.
  • the means for conveying the bales alternately towards one or the other of the conduits emerging opposite the spaces comprised between the rotary rollers comprise a main conduit connected at one of its ends to an air blower, and at its other end to a Y-shaped connection made to the two aforementioned conduits, downstream of this Y-shaped connection being placed opposite of each conduit, a member which can engage alternately in one or the other of the conduits to prevent the passage of bullets.
  • the duration between the positions of engagement and withdrawal of this member can be modified according to the rate of launching of the balls that it is desired to obtain.
  • the device for throwing balls housed in a box 1 placed at one end of a tennis table 2, mainly comprises a throwing head 3, an air blower 4 (see Figure 2) connected to lines 5, 6 for continuously conveying the balls 7 towards the launching head 3, and means for recovering the balls 7 launched by the player and then routing them again to the launching head 3.
  • the launching head 3 comprises two pairs of rollers 8, 9; 10, 11 arranged side by side substantially along two parallel and vertical planes. Each roller is rotated by a motor 12, 13; 14, 15 whose speeds are individually adjustable, for example by means of potentiometers or the like.
  • rollers 8 to 11 and these motors 12 to 15 are carried by a yoke 16 fixed to the end of an arm 17 which is slidably mounted on a column 18.
  • the length of the arm 17 as well as the height of fixing of this arm on the column 18 are adjustable by acting on locking levers as designated by the reference 19.
  • the yoke 16 carrying the rollers 8 to 11 is articulated relative to the arm 17 along a horizontal axis, so that the inclination of the launching head 3 relative to a horizontal plane can be adjusted.
  • the locking lever 20 allows this head to be fixed in the desired angular position.
  • the column 18 is pivotally mounted along a vertical axis XX ′ and it is connected to a connecting rod 21 (see FIGS. 2 and 4) articulated to a disc 22 driven in rotation by a motor 23. This arrangement allows the head 3 to continuously scan a determined angular sector (see Figure 4).
  • This angular sector a can be modified by adjusting the position of the articulation point 21 a of the connecting rod 21 on the disc 22.
  • the scanning speed of the launching head 3 can be modified by adjusting the speed of rotation of the motor 23.
  • rollers 8 to 11 of each pair are separated by a space 24, 25 adapted to the diameter of the balls 7, to allow the ball engaged in this space 24 or 25 to be engaged simultaneously with the two rollers of each pair, as shown in Figure 6.
  • a pipe 26, 27 for supplying the bales 7 opens opposite each of the spaces 24, 25.
  • each roller 8 to 11 has two lateral flanges such as 8a, 8b made of flexible material defining on the periphery of each roller a U-shaped groove adapted to the diameter of the balls 7.
  • rollers 8 to 11 comprise a tread 28 made of rubber or any other elastic material having a relatively high coefficient of friction with the balls 7.
  • the height of the spaces such as 24 comprised between the treads 28 of two adjacent rollers 8, 9 or 10, 11 is slightly less than the diameter of the bales 7, which results in a slight crushing of the bands during the passage of the bales.
  • bearing 28 which is favorable to the adhesion between the latter and the balls and increases the efficiency of the projection of these balls.
  • the conduits 26, 27 which bring these balls 7 alternately either between the rollers 8, 9, or between the rollers 10, 11 communicate with a main pipe 29 which is connected to a flexible pipe 6 which is itself connected to a vertical pipe 5 by means of a transverse pipe 30 made of transparent material (see FIG. 2).
  • the air blower 4 is connected to the pipe vertical 5 by an elbow 31 provided with an adjustable vent 32.
  • adjustable vents 33 are provided in the elbow 34 which connects the pipe 5 and the transparent pipe 30.
  • the inside diameter d of the bale conveying lines 7 towards the launching head 3 is greater than the diameter of the bales, so that the latter are propelled by blowing and not by piston effect.
  • the diameter of the conduits 26, 27 adjacent to the rollers 8 to 11 is at their free end substantially equal to the diameter of the balls 7 to increase the efficiency of their expulsion from these conduits 26, 27.
  • the means for conveying the bales 7 alternately towards one or the other of the conduits 26, 27 which open opposite the spaces 24, 25 comprised between the rollers 8, 9; 10, 11 comprise a Y connector 35 communicating with the flexible pipe 29 and with the conduits 26, 27. Downstream of this Y connector is disposed opposite each conduit 26, 27, a finger 36, 37 biased by an electromagnet 38, 39.
  • Each finger 36, 37 is movable between a position in which its end projects slightly inside the conduit 26 as indicated on the left part of FIG. 7 and in FIG. 8 or inside the conduit 27 and a position as shown on the right side of figure 7.
  • Electromagnets 38, 39 are connected to means not shown but conventional for controlling the reciprocating movement of the fingers 36, 37 so as to allow successive passage at a frequency, for example between one and three bullets per second in the conduits 26, 27.
  • the Y-connector 35 has at its entrance a point 40 which prevents a ball 7a (shown in dotted lines) from occupying a stable position at the entrance of the Y-connector capable of blocking the routing of the balls, so that this ball 7a is obliged to engage either in the conduit 26 or in the conduit 27.
  • the distance H between the fingers 36, 37 and the tip 40 of the Y connector is determined so that each branch of the Y connector cannot contain any ball capable of hindering the passage of a ball in the other branch of this Y-connector.
  • the means for collecting the balls 7 returned by the player comprise a net 41 stretched over the table 2 and in front of the throwing head 3.
  • This net 41 is hooked to the end of two rods 42 fixed on the upper part 1a of the box 1.
  • This net 41 includes a central window 43 (see FIG. 3) arranged opposite the launching head 3.
  • a chute 45 of cross section in an arc of a circle to collect the balls 7.
  • This chute 45 has two slopes inclined towards its middle. The lowest point of this chute 45 corresponding to its middle, includes a bale 46 for collecting bales 7 which is connected by a flexible pipe 47 to the elbow 31 which connects the air blower 4 to the vertical pipe 5.
  • FIG. 9 represents the electrical control panel 48 for controlling the device according to the invention.
  • This table 48 has four rotary knobs 49, 50, 51, 52 associated with potentiometers for individually adjusting the rotational speed of the motors 12 to 15 which drive the rollers 8 to 11. This speed can thus be adjusted to a value between 100 and around 7,000 rpm.
  • a button 52a makes it possible to adjust the duration between the positions of engagement and withdrawal of the fingers 36, 37 solicited by the electromagnets 38, 39.
  • Another button 53 makes it possible to adjust the rate of delivery of the balls alternately to the conduits 26, 27.
  • the button 54 makes it possible to adjust the speed of rotation of the motor 23 which controls the sweeping of the launching head 3.
  • the switches 55a and 55b control the reversal of the direction of rotation of two of the four drive motors of the rollers 8 to 11, which makes it possible to obtain the projection of the balls 7 with reinforced effects.
  • Switches 56, 57 and 58 are respectively intended for starting the electrical supply of the switchboard 48, for starting the sweeping, and for starting the electrical supply for the control circuit of the electromagnets 38, 39.
  • the parallelepipedic box 1 containing the entire device according to the invention comprises (see FIG. 2) two parts Ib, Ic articulated together by means of hinges 59. These two parts Ib, Ic can be folded one on the other, as shown in Figure 10.
  • the box 1 thus folded has a very small overall height which facilitates storage and transport of the device. The displacement of this box 1 can be facilitated by providing its base with rollers 60.
  • the position of the launching head 3 is adjusted by acting on the levers 19 and 20.
  • the various switches of the electrical control panel 48 are placed in the operating position and a few balls 7 are introduced into the routing circuit of the latter towards the launching head. As soon as a ball 7 arrives in the elbow 31, it is propelled into the lines 5, 30 and 6 by means of the air blower 4.
  • the intensity of the blowing can be adjusted by adjusting the opening of the vents 32, 33.
  • the transparent pipe 30 located at the top of the box 1 makes it possible to check the passage of the balls 7. The balls follow one after the other, nothing existing on their trajectory that could hinder their passage.
  • the balls 7 then penetrate into the branches of the Y connector 35.
  • the balls are successively conveyed either to the conduit 26 or to conduit 27.
  • the balls are thus expelled from the launch head at a rate of between one and three balls per second approximately, alternately between one or the other pair of rollers 8, 9; 10, 11.
  • the playing conditions can be modified instantly, as in the case of a real game where the player is in the presence of an opponent who naturally seeks to put him in trouble.
  • the scanning speed of the throwing head 3 can be continuously modified, so that the balls 7 are projected in variable directions, which makes it possible to restore the conditions of a real game and this makes the game particularly attractive.
  • FIG. 11 shows an alternative embodiment of the means of propulsion and launching of the balls 7.
  • the main pipe 5 connected to the blower 4 is subdivided according to a Y-connector 65 into two horizontal pipes 5a, 5b which each open out opposite a launching head comprising the rollers 8, 9; 10, 11.
  • Each horizontal pipe 5a, 5b comprises a vent 61 whose dimensions are less than the diameter of a ball 7.
  • a roller 62 (see also FIG. 12) is arranged which is partially engaged inside the pipe 5a, 5b. This roller 62, when it is stopped, blocks the balls 7 and propels them one after the other when it is rotated.
  • the roller 62 is advantageously made of elastic material, such as rubber and defines inside the pipe 5a, 5b a passage section whose surface is slightly smaller than the section of a bale 7.
  • the launching heads are each mounted on a vertical support 63, 64 allowing the launching heads to be adjusted to different heights.
  • a plate 61 whose inclination b relative to the horizontal can be adjusted at will, as well as its inclination relative to the vertical.
  • This plate 61 thus cuts the trajectory of the balls 7 and deflects the latter, ie worm; the top (lifted effect) either down (cut effect), either to the right or to the left.
  • This plate 61 also makes it possible to modify the conditions for projecting the balls 7, thus imposing on the player additional difficulties liable to prove his skill.
  • a lamp 62 (see FIG. 2) which lights up as soon as a ball is to be thrown. The player is thus warned of the throwing of a ball, as in the case of a real game.
  • the operation of the device can be fully automatic, according to a program predetermined using preprogrammed punched cards or tapes.
  • a program predetermined using preprogrammed punched cards or tapes can be designed to design different operating programs imposing increasing difficulties on players adapted to their level of qualification.
  • the device according to the invention can also be applied to other ball games than table tennis such as the game of tennis on court.

Claims (17)

  1. Vorrichtung zum Werfen von Bällen auf ein Spielfeld (2), mit Mitteln (4, 5, 6) zur kontinuierlichen Beförderung der Bälle (7) zu einem Wurfkopf (3), der wenigstens ein Paar von Drehantriebsrolle umfasst, welche die Bälle (7) nacheinander entnehmen kann, um sie auf das Spielfeld zu werfen, in welchem die Rollen dieses Paares durch einen Raum (24, 25) voneinander getrennt sind, der an den Durchmesser der Bälle (7) angepasst ist, damit die in diesen Raum eingetretenen Bälle gleichzeitig von den beiden Rollen dieses Paares erfasst werden können, eine 8allzuführungs-leitung (26, 27) gegenüber diesem Räume (24, 25) mündet und mit Mitteln (41, 45) zum Einfangen der von dem Spieler gespielten Gälle und erneuten Gefördern derselben zu dem Wurfkopf (3), und Mittel (49, 52) die vorgesehen sind, um die Rotationsgeschwindigkeit jeder Rolle individuell einzustellen, dadurch gekennzeichnet, dass der Wurfkopf (3) zwei Paare von drehbaren Rollen (8, g; 10, 11) umfasst, die nebeneinander angeordnet sind, dass jedes Paar von Rollen mit einem Ballzuführungsleitung (26, 27) vorgesehen ist und dass Mittel (36, 37, 38, 39) vorgesehen sind, um die Bälle abwechselnd in die eine oder andere der genannten Leitungen zu befördern.
  2. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Wurfkopf (3) schwenkbar um eine im wesentlichen senkrechte Achse gelagert und mit Mitteln (21, 22, 23) verbunden ist, die eine kontinuierliche Schwenkbewegung des Wurfkopfes (3) über einen bestinunten Winkelsektor (a) ermöglichen.
  3. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß Mittel (21 a) vorgesehen sind, um den Winkelsektor (a) zu verändern, über den der Wurfkopf (3) verschwenkt wird.
  4. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Rollen jedes Paares (8, 9; 10, 11) in Betriebsstellung ungefähr in einer senkrechten Ebene angeordnet sind und zwei Seitenflansche (8a, 8b) aufweisen, die mit der Rol.loberfläche der Rollen eine im wesentlichen Ü-förmige Rinne bilden, die an den Durchmesser der Bälle (7) angepaßt ist.
  5. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Rollen (8, 9, 10, 11) ein Abrollband (28) aus elastischem Material aufweisen, das einen hohen Reibungskoeffizient gegenüber den Bällen (7) besitzt.
  6. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Höhe des Raumes (24, 25) zwischen der Abrolloberfläche der übereinander angeordneten Rollen etwas geringer als der Durchmesser der Bälle ist.
  7. 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Mittel zur abwechselnden Beförderung der Bälle in die eine oder andere der Leitungen (26, 27; 5a, 5b) eine Hauptleitung (5) unfassen, die an ihrem einen Ende an ein Luftgebläse (4) und an ihrem anderen Ende an ein Y-Verbindungsstück (35, 65), angeschlossen ist, welches mit den beiden Leitungen (26, 27) verbunden ist, und dass in Bewegungsrichtung hinter dem Y-Anschlussstück gegenuber jeder Leitung (26, 27; 5a, 5b), ein Organ (36, 37, 62) angeordnet ist, dass abwechselnd in die eine oder andere der Leitungen (26, 27) eingreifen kann, um den Durchgang der Bälle (7) zu verhindern.
  8. 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Leitungen (5a, 5b), die jeweils mit einem der Wurfköpfe verbunden sind aufweisen jeweils einen Luftauslass (61), der durch die Bälle (7) verschlossen werden kann, und dass in ßewegungsrichtung vor jedem Wurfkopf eine Rolle (62) aus elastischem Material vorgesehen ist, die in den Innenraum der Leitung (5a, 5b) hineinragt und die ßälle (7) sperren kann, wenn sie angehalten ist, und sie zu dem Wurfkopf worschieben kann, wenn sie in Drehung versetzt ist.
  9. 9.Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass das gennante Organ ein Finger (36, 37) ist, der durch einen Elektromagneten (38, 39) beaufschlagt wird, wobei das Ende dieses Fingers in den Innenraum der Leitungen (26, 27) hineinragen kann.
  10. 10: Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß der Abstand H zwischen den Organen oder Fingern (36, 37) und dem Einlaß (40) des Y-Anschluß-teils (35) derart bestimmt ist, daß jeder Schenkel des Y-Anschlußteils (35) keinen Ball (7) enthalten kann, der den Durchgang eines Balles in dem anderen Schenkel des Anschlußteils (35) behindern könnte.
  11. 11. Vorrichtung nach einem der Ansprüche 1 bis 10, für das Werfen von Bällen (7) auf eine Tischtennisplatte (2), wobei diese Vorrichtung dazu bestimmt ist, gegenüber einem der Enden des Tisches dem Spieler gegenüber angeordnet zu werden, dadurch gekennzeichnet, daß die Mittel zum Aufsammeln der von dem Spieler gespielten Bälle ein Netz (41) umfassen, welches über dem Tisch (2) vor den Wurfkopf (3) und dem Spieler gegenüber gespannt ist, wobei dieses Netz ein mittiges Fenster (43) aufweist, welches dem Wurfkopf (3) gegenüber angeordnet ist, daß unter dem unteren Rand (44) des Netzes (41) sich eine Rinne (45) für das Aufsammeln von Bällen erstreckt, die zwei Neigungen aufweist, welche zur Mitte der Rinne hinführen, und daß der tiefste Punkt dieser Rinne (45) ein Ablaufloch (46) zum Aufsammeln der Bälle aufweist, das über ein Rohr (47) mit der Hauptleitung (5) verbunden ist, welche an das Gebläse (4) zum Herausschleudern der Bälle angeschlossen ist.
  12. 12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der Querschnitt der Rinne (45) kretsbogenförmig ist.
  13. 13. Vorrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß der Wurfkopf (3) an ein elektrisches Steuerfeld (48) angeschlossen ist, das vier Knöpfe (49, 50, 51, 52) zum Einstellen der Rotationsgeschwindigkeit der Rollen (8, 9, 10, 11), einen Knopf (52a) zum Einstellen der Dauer zwischen den Stellungen des Hineinragens und des Zurückziehens des Organes (36, 37) für die abwechselnde Zuführung der Bälle zu der einen oder anderen Leitung (26, 27) und einen Knopf (54) zur Einstellung der Schwenkgeschwindigkeit des Wurfkopfes (3) aufweist.
  14. 14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß sie Knöpfe (55a, 55b) zum Ümkehren der Drehrichtung der vier Rollen (8, 9, 10, 11) umfaßt.
  15. 15. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß gegenüber dem Wurfkopf (3) eine Platte (61) angeordnet ist, die Mitteln zur Einstellung ihrer Neigung (b) gegenüber einer waagerechten und/oder senkrechten Ebene zugeordnet ist, wobei diese Platte die Bahn der Bälle (7) schneidet, um diese umzulenken.
  16. 16. Vorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die gesamte Vorrichtung in einem quaderförmigen Gehäuse (1) untergebracht ist, die zwei aneinander angelenkte Teile (1 b, 1 c) umfaßt, die aufeinandergeklappt werden können.
  17. 17. Vorrichtung nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass die mit Rollen (8, 9; 10, 11) versehenen Wurfköpfe auf Trägern angeordnet sind, welche die Einstellung der Höhe jedes Wurfkopfes zulassen.
EP83400731A 1982-05-12 1983-04-13 Ballwurfvorrichtung Expired EP0094267B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400731T ATE18636T1 (de) 1982-05-12 1983-04-13 Ballwurfvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8208237A FR2526667A1 (fr) 1982-05-12 1982-05-12 Dispositif pour lancer des balles
FR8208237 1982-05-12

Publications (2)

Publication Number Publication Date
EP0094267A1 EP0094267A1 (de) 1983-11-16
EP0094267B1 true EP0094267B1 (de) 1986-03-19

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EP83400731A Expired EP0094267B1 (de) 1982-05-12 1983-04-13 Ballwurfvorrichtung

Country Status (6)

Country Link
US (1) US4559918A (de)
EP (1) EP0094267B1 (de)
JP (1) JPS58206774A (de)
AT (1) ATE18636T1 (de)
DE (2) DE94267T1 (de)
FR (1) FR2526667A1 (de)

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Also Published As

Publication number Publication date
EP0094267A1 (de) 1983-11-16
FR2526667B1 (de) 1984-12-21
DE94267T1 (de) 1984-03-01
FR2526667A1 (fr) 1983-11-18
JPS58206774A (ja) 1983-12-02
US4559918A (en) 1985-12-24
ATE18636T1 (de) 1986-04-15
DE3362579D1 (en) 1986-04-24

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