An apparatus for launching balls for sports practice

Details An apparatus for launching balls for sports practice An apparatus for launching balls for sports practice

A - Human Necessities

63

B

A63B 69/40 (2006.01) F16K 31/383 (2006.01) F41B 11/32 (2006.01)

Patent

CA 2552374

An apparatus for launching balls for sports practice. A tank for pressurised gaseous fluid is connected by an exhaust duct to a launch tube dimensioned to correspond to a ball to be launched, and having a ball positioning seat. A rapid opening device effects discharge of fluid from the tank to the launch tube through the exhaust duct, to launch the ball. Throttling means mounted in the exhaust duct determine the transfer of the fluid from the tank to the launch tube. Means for varying the position of the ball seat can be operatively associated to the throttling means to vary the position of the seat corresponding to transfer of fluid from the tank to the launch tube and vice versa, according to a pre-determined relationship. The apparatus provides for repetitive launching and adjustable launch velocities, and is applicable to balls of different weights and diameters of balls.

L'invention concerne un lanceur de balles pour la pratique sportive, qui comprend un réservoir (2) accueillant un fluide gazeux sous pression, relié via un conduit d'échappement (5) à un tube lanceur (3) dont la section correspond sensiblement à celle d'une balle (4) à lancer, et qui comporte un siège (8) de positionnement de balle (4). Un dispositif d'ouverture rapide (6) permet de délivrer sur commande le fluide depuis le réservoir (2) en direction du tube (3) via le conduit d'échappement (5), pourle lancement de la balle (4). Le lanceur (1) comprend aussi un dispositif d'étranglement (37) dans le conduit (5) pour déterminer le transfert de fluide depuis le réservoir (2) vers le tube (3), et un système (43) de variation de position du siège (8) pour la balle (4) à lancer, avec possibilité d'association opérationnelle mutuelle pour varier la position du siège (8) selon la régulation du transfert de fluide depuis le réservoir (2) à destination du tube (3) et vice versa, selon une relation préétablie.

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